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Port Moresby W.O. Weather Records (PP000092035)

Record envelope, standing records and threshold days for Port Moresby W.O. (PP000092035), Papua New Guinea, with 56 years of record.

Key Facts for Port Moresby W.O.

  • Port Moresby W.O. (PP000092035) is a weather station in Papua New Guinea at -9.38 latitude and 147.22 longitude, 48 m (157 ft) above sea level.
  • The station reports from 1970 to 2025, 56 years of record.
  • 1,464 records set at Port Moresby W.O. still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Port Moresby W.O. set a daily record precipitation of 11.9 mm (0.5 in) on 2 August 2025.

About the Station

  • Location: Papua New Guinea, -9.38 latitude, 147.22 longitude.
  • Elevation: 48 m (157 ft).
  • Period of record: 1970 to 2025, 56 years.
  • Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Port Moresby W.O., with 2026 drawn through them The band shows the record high and record low for each calendar day at Port Moresby W.O.. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. 10152025303540 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Port Moresby W.O.. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Port Moresby W.O., with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan37.2 C (99.0 F)18.8 C (65.8 F)n/an/a
Feb35.5 C (95.9 F)20.0 C (68.0 F)n/an/a
Mar35.1 C (95.2 F)18.4 C (65.1 F)n/an/a
Apr34.0 C (93.2 F)19.3 C (66.7 F)n/an/a
May35.2 C (95.4 F)17.5 C (63.5 F)n/an/a
Jun34.5 C (94.1 F)17.0 C (62.6 F)n/an/a
Jul34.2 C (93.6 F)16.7 C (62.1 F)n/an/a
Aug33.7 C (92.7 F)14.6 C (58.3 F)n/an/a
Sep34.0 C (93.2 F)14.8 C (58.6 F)n/an/a
Oct36.6 C (97.9 F)17.5 C (63.5 F)n/an/a
Nov35.7 C (96.3 F)18.5 C (65.3 F)n/an/a
Dec38.4 C (101.1 F)19.4 C (66.9 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Port Moresby W.O. by the year they were set 1,464 records at Port Moresby W.O. still stand. 1998 holds the most, with 120. 0501001501970: 361971: 311972: 821973: 301974: 351975: 231976: 591977: 411978: 451979: 261980: 421981: 791982: 651983: 591984: 401985: 451986: 371987: 651988: 431989: 201990: 441991: 481992: 271993: 341994: 351995: 341996: 201997: 461998: 1201999: 212000: 302001: 302002: 452003: 27197019741978198219861990199419982002
1,464 records at Port Moresby W.O. still stand. 1998 holds the most, with 120.
Standing records at Port Moresby W.O. by the year they were set
Year setStanding records
197036
197131
197282
197330
197435
197523
197659
197741
197845
197926
198042
198179
198265
198359
198440
198545
198637
198765
198843
198920
199044
199148
199227
199334
199435
199534
199620
199746
1998120
199921
200030
200130
200245
200327

All-Time Record Progression

1 new records
When Port Moresby W.O. set new all-time records 1 all-time records were set at Port Moresby W.O. between 25 December 2002 and 25 December 2002. Each dot is a new record. Record high maximum temperature25 December 2002: Record high maximum temperature 38.4 C (101.1 F)
1 all-time records were set at Port Moresby W.O. between 25 December 2002 and 25 December 2002. Each dot is a new record.
When Port Moresby W.O. set new all-time records
DateKindDetail
2002-12-25Record high maximum temperatureRecord high maximum temperature 38.4 C (101.1 F)

Wettest Day of Each Month

May: 305.0 mm (12.0 in)
Record daily precipitation for each month at Port Moresby W.O. The wettest day on record for each calendar month at Port Moresby W.O.. The most was 305.0 mm (12.0 in) on 11 May 1994. 0100200300400 Jan: 135.9 mm (5.4 in), 14 January 2013 Jan Feb: 159.0 mm (6.3 in), 18 February 2003 Feb Mar: 186.0 mm (7.3 in), 7 March 1985 Mar Apr: 147.0 mm (5.8 in), 1 April 1986 Apr May: 305.0 mm (12.0 in), 11 May 1994 May Jun: 169.9 mm (6.7 in), 13 June 2011 Jun Jul: 100.0 mm (3.9 in), 28 July 1996 Jul Aug: 192.0 mm (7.6 in), 12 August 2019 Aug Sep: 39.0 mm (1.5 in), 9 September 1975 Sep Oct: 109.0 mm (4.3 in), 29 October 1989 Oct Nov: 163.1 mm (6.4 in), 13 November 2007 Nov Dec: 304.0 mm (12.0 in), 10 December 2024 Dec
The wettest day on record for each calendar month at Port Moresby W.O.. The most was 305.0 mm (12.0 in) on 11 May 1994.
Record daily precipitation for each month at Port Moresby W.O.
MonthRecord daily precipitation (mm)Date
Jan135.9 mm (5.4 in)14 January 2013
Feb159.0 mm (6.3 in)18 February 2003
Mar186.0 mm (7.3 in)7 March 1985
Apr147.0 mm (5.8 in)1 April 1986
May305.0 mm (12.0 in)11 May 1994
Jun169.9 mm (6.7 in)13 June 2011
Jul100.0 mm (3.9 in)28 July 1996
Aug192.0 mm (7.6 in)12 August 2019
Sep39.0 mm (1.5 in)9 September 1975
Oct109.0 mm (4.3 in)29 October 1989
Nov163.1 mm (6.4 in)13 November 2007
Dec304.0 mm (12.0 in)10 December 2024

Period of Record Coverage

1970 to 2003
Days with data per year at Port Moresby W.O. 34 years of record at Port Moresby W.O., 1970 to 2003. 1 years have data for under 90 percent of days and are left out of rankings: 2003. 1970: 365 of 365 days1971: 365 of 365 days1972: 366 of 366 days1973: 365 of 365 days1974: 365 of 365 days1975: 364 of 365 days1976: 364 of 366 days1977: 364 of 365 days1978: 365 of 365 days1979: 365 of 365 days1980: 366 of 366 days1981: 365 of 365 days1982: 364 of 365 days1983: 365 of 365 days1984: 365 of 366 days1985: 365 of 365 days1986: 365 of 365 days1987: 365 of 365 days1988: 335 of 366 days1989: 365 of 365 days1990: 364 of 365 days1991: 365 of 365 days1992: 366 of 366 days1993: 364 of 365 days1994: 364 of 365 days1995: 364 of 365 days1996: 366 of 366 days1997: 365 of 365 days1998: 365 of 365 days1999: 365 of 365 days2000: 366 of 366 days2001: 363 of 365 days2002: 361 of 365 days2003: 212 of 365 days1970197519801985199019952000
34 years of record at Port Moresby W.O., 1970 to 2003. 1 years have data for under 90 percent of days and are left out of rankings: 2003.
Days with data per year at Port Moresby W.O.
YearDays with dataShare of yearComplete
1970365100%Yes
1971365100%Yes
1972366100%Yes
1973365100%Yes
1974365100%Yes
1975364100%Yes
197636499%Yes
1977364100%Yes
1978365100%Yes
1979365100%Yes
1980366100%Yes
1981365100%Yes
1982364100%Yes
1983365100%Yes
1984365100%Yes
1985365100%Yes
1986365100%Yes
1987365100%Yes
198833592%Yes
1989365100%Yes
1990364100%Yes
1991365100%Yes
1992366100%Yes
1993364100%Yes
1994364100%Yes
1995364100%Yes
1996366100%Yes
1997365100%Yes
1998365100%Yes
1999365100%Yes
2000366100%Yes
200136399%Yes
200236199%Yes
200321258%No

Latest Records

20
Latest records at Port Moresby W.O.
DateStationRecordValueBeat old record byOld record stoodSignificance
2 August 2025Port Moresby W.O., PGdaily rain11.9 mm (0.5 in)3.9 mm (0.15 in)35 years16 of 100 (Routine)
7 April 2025Port Moresby W.O., PGdaily rain38.1 mm (1.5 in)17.1 mm (0.7 in)28 years22 of 100 (Routine)
4 April 2025Port Moresby W.O., PGdaily rain77.0 mm (3.0 in)53.0 mm (2.1 in)48 years48 of 100 (Notable)
10 December 2024Port Moresby W.O., PGmonthly rain304.0 mm (12.0 in)161.0 mm (6.3 in)27 years63 of 100 (Major)
8 December 2024Port Moresby W.O., PGdaily rain (Tie)15.0 mm (0.6 in)tie48 years4 of 100 (Routine)
17 September 2024Port Moresby W.O., PGdaily rain5.1 mm (0.20 in)1.1 mm (0.04 in)54 years20 of 100 (Routine)
13 August 2024Port Moresby W.O., PGdaily rain23.9 mm (0.9 in)14.9 mm (0.6 in)32 years20 of 100 (Routine)
29 June 2024Port Moresby W.O., PGdaily rain96.0 mm (3.8 in)67.0 mm (2.6 in)23 years48 of 100 (Notable)
13 January 2024Port Moresby W.O., PGdaily rain45.0 mm (1.8 in)13.0 mm (0.5 in)17 years17 of 100 (Routine)
30 May 2023Port Moresby W.O., PGdaily rain67.1 mm (2.6 in)17.1 mm (0.7 in)22 years17 of 100 (Routine)
27 May 2023Port Moresby W.O., PGdaily rain35.1 mm (1.4 in)27.1 mm (1.1 in)26 years23 of 100 (Routine)
22 December 2022Port Moresby W.O., PGdaily rain39.9 mm (1.6 in)10.9 mm (0.4 in)48 years25 of 100 (Routine)
8 December 2022Port Moresby W.O., PGdaily rain (Tie)15.0 mm (0.6 in)tie45 years4 of 100 (Routine)
6 September 2022Port Moresby W.O., PGdaily rain7.1 mm (0.28 in)2.1 mm (0.08 in)29 years16 of 100 (Routine)
22 August 2022Port Moresby W.O., PGdaily rain11.9 mm (0.5 in)10.9 mm (0.4 in)52 years20 of 100 (Routine)
14 August 2022Port Moresby W.O., PGdaily rain35.1 mm (1.4 in)29.1 mm (1.1 in)28 years27 of 100 (Routine)
8 January 2022Port Moresby W.O., PGdaily rain55.9 mm (2.2 in)13.9 mm (0.5 in)43 years24 of 100 (Routine)
12 October 2021Port Moresby W.O., PGdaily rain22.1 mm (0.9 in)14.1 mm (0.6 in)20 years20 of 100 (Routine)
11 October 2021Port Moresby W.O., PGdaily rain22.1 mm (0.9 in)4.1 mm (0.16 in)51 years20 of 100 (Routine)
3 October 2021Port Moresby W.O., PGdaily rain32.0 mm (1.3 in)9.9 mm (0.39 in)12 years14 of 100 (Routine)

Climate Trend

32 complete years, 1970 to 2002
Annual mean temperature at Port Moresby W.O. as warming stripes, 1970 to 2002 One stripe for each of 32 complete years at Port Moresby W.O., 1970 to 2002. Blue stripes are years cooler than the station's own mean of 27.2 C (80.9 F); red stripes are warmer. The coolest year was 1972, at 26.1 C (79.0 F), and the warmest was 1998, at 28.3 C (82.9 F). The strongest colour marks a difference of 1.2 C (2.2 F). 1970: 26.8 C, -0.3 C from the station mean1971: 26.8 C, -0.4 C from the station mean1972: 26.1 C, -1.0 C from the station mean1973: 27.4 C, +0.2 C from the station mean1974: 26.9 C, -0.3 C from the station mean1975: 27.0 C, -0.2 C from the station mean1976: 26.4 C, -0.7 C from the station mean1977: 26.9 C, -0.3 C from the station mean1978: 27.3 C, +0.1 C from the station mean1979: 26.9 C, -0.2 C from the station mean1980: 27.3 C, +0.2 C from the station mean1981: 27.6 C, +0.4 C from the station mean1982: 26.7 C, -0.5 C from the station mean1983: 27.9 C, +0.7 C from the station mean1984: 27.2 C, +0.1 C from the station mean1985: 27.1 C, -0.1 C from the station mean1986: 27.3 C, +0.1 C from the station mean1987: 27.5 C, +0.3 C from the station mean1989: 27.2 C, 0.0 C from the station mean1990: 27.1 C, -0.1 C from the station mean1991: 26.9 C, -0.2 C from the station mean1992: 27.3 C, +0.2 C from the station mean1993: 27.0 C, -0.1 C from the station mean1994: 27.0 C, -0.1 C from the station mean1995: 27.5 C, +0.3 C from the station mean1996: 27.3 C, +0.2 C from the station mean1997: 26.7 C, -0.5 C from the station mean1998: 28.3 C, +1.1 C from the station mean1999: 27.4 C, +0.3 C from the station mean2000: 27.4 C, +0.3 C from the station mean2001: 27.5 C, +0.3 C from the station mean2002: 27.4 C, +0.3 C from the station mean1970197519801985199019952000
One stripe for each of 32 complete years at Port Moresby W.O., 1970 to 2002. Blue stripes are years cooler than the station's own mean of 27.2 C (80.9 F); red stripes are warmer. The coolest year was 1972, at 26.1 C (79.0 F), and the warmest was 1998, at 28.3 C (82.9 F). The strongest colour marks a difference of 1.2 C (2.2 F).
Annual mean temperature at Port Moresby W.O. as warming stripes, 1970 to 2002
YearAnnual mean temperatureDifference from the station mean
197026.8 C-0.32 C
197126.8 C-0.38 C
197226.1 C-1.04 C
197327.4 C+0.22 C
197426.9 C-0.25 C
197527.0 C-0.20 C
197626.4 C-0.74 C
197726.9 C-0.27 C
197827.3 C+0.11 C
197926.9 C-0.24 C
198027.3 C+0.18 C
198127.6 C+0.43 C
198226.7 C-0.50 C
198327.9 C+0.74 C
198427.2 C+0.06 C
198527.1 C-0.10 C
198627.3 C+0.15 C
198727.5 C+0.31 C
198927.2 C+0.03 C
199027.1 C-0.10 C
199126.9 C-0.21 C
199227.3 C+0.19 C
199327.0 C-0.14 C
199427.0 C-0.12 C
199527.5 C+0.31 C
199627.3 C+0.17 C
199726.7 C-0.49 C
199828.3 C+1.14 C
199927.4 C+0.27 C
200027.4 C+0.27 C
200127.5 C+0.33 C
200227.4 C+0.28 C

The annual mean temperature here has risen by 0.2 C (0.1 to 0.3) per decade over 1970 to 2002. In Fahrenheit: 0.4 F (0.1 to 0.6) per decade. The slope is a straight line fitted to 32 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Port Moresby W.O.
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.2 C (0.1 to 0.3) per decade0.4 F (0.1 to 0.6) per decade1970 to 200232Rise
Mean daily maximum0.14 C (0.00 to 0.29) per decade0.26 F (0.00 to 0.52) per decade1970 to 200232Not clearly different from zero
Mean daily minimum0.3 C (0.1 to 0.4) per decade0.5 F (0.2 to 0.8) per decade1970 to 200232Rise

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1970 to 2025
Yearly extremes at Port Moresby W.O.: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)38.4 C (101.1 F)200235.1 C (95.2 F)34
Coldest night (TNn)14.6 C (58.3 F)199018.3 C (64.9 F)34
Wettest day (Rx1day)305.0 mm (12.0 in)199493.0 mm (3.7 in)56
Wettest five days (Rx5day)388.0 mm (15.3 in)1994140.0 mm (5.5 in)55
Longest dry spell (CDD)94 days198723 days56

Hottest day (TXx)

Hottest day (TXx) at Port Moresby W.O. by year The hottest day of the year at Port Moresby W.O., 1970 to 2025. The record is 38.4 C (101.1 F) in 2002, marked on the chart; the median year is 35.1 C (95.2 F). 3234363840197019801990200020102020Record: 38.4 C (101.1 F) in 2002
The hottest day of the year at Port Moresby W.O., 1970 to 2025. The record is 38.4 C (101.1 F) in 2002, marked on the chart; the median year is 35.1 C (95.2 F).
Hottest day (TXx) at Port Moresby W.O. by year
YearHottest day (TXx)
197033.4 C (92.1 F)
197135.1 C (95.2 F)
197234.3 C (93.7 F)
197335.4 C (95.7 F)
197435.1 C (95.2 F)
197534.4 C (93.9 F)
197634.4 C (93.9 F)
197734.5 C (94.1 F)
197835.3 C (95.5 F)
197934.5 C (94.1 F)
198036.6 C (97.9 F)
198135.5 C (95.9 F)
198235.7 C (96.3 F)
198337.2 C (99.0 F)
198434.6 C (94.3 F)
198533.7 C (92.7 F)
198636.2 C (97.2 F)
198736.6 C (97.9 F)
198835.5 C (95.9 F)
198934.4 C (93.9 F)
199035.6 C (96.1 F)
199135.6 C (96.1 F)
199234.8 C (94.6 F)
199335.0 C (95.0 F)
199435.2 C (95.4 F)
199535.0 C (95.0 F)
199635.1 C (95.2 F)
199735.5 C (95.9 F)
199836.0 C (96.8 F)
199934.7 C (94.5 F)
200035.4 C (95.7 F)
200135.0 C (95.0 F)
200238.4 C (101.1 F)
200334.8 C (94.6 F)
2004n/a
2005n/a
2006n/a
2007n/a
2008n/a
2009n/a
2010n/a
2011n/a
2012n/a
2013n/a
2014n/a
2015n/a
2016n/a
2017n/a
2018n/a
2019n/a
2020n/a
2021n/a
2022n/a
2023n/a
2024n/a
2025n/a

Coldest night (TNn)

Coldest night (TNn) at Port Moresby W.O. by year The coldest night of the year at Port Moresby W.O., 1970 to 2025. The record is 14.6 C (58.3 F) in 1990, marked on the chart; the median year is 18.3 C (64.9 F). 1416182022197019801990200020102020Record: 14.6 C (58.3 F) in 1990
The coldest night of the year at Port Moresby W.O., 1970 to 2025. The record is 14.6 C (58.3 F) in 1990, marked on the chart; the median year is 18.3 C (64.9 F).
Coldest night (TNn) at Port Moresby W.O. by year
YearColdest night (TNn)
197017.6 C (63.7 F)
197118.5 C (65.3 F)
197214.8 C (58.6 F)
197318.2 C (64.8 F)
197416.6 C (61.9 F)
197519.7 C (67.5 F)
197616.5 C (61.7 F)
197718.5 C (65.3 F)
197817.8 C (64.0 F)
197918.0 C (64.4 F)
198018.2 C (64.8 F)
198117.1 C (62.8 F)
198217.0 C (62.6 F)
198321.0 C (69.8 F)
198418.8 C (65.8 F)
198518.1 C (64.6 F)
198617.6 C (63.7 F)
198717.4 C (63.3 F)
198819.5 C (67.1 F)
198920.3 C (68.5 F)
199014.6 C (58.3 F)
199118.4 C (65.1 F)
199218.7 C (65.7 F)
199317.5 C (63.5 F)
199417.5 C (63.5 F)
199518.9 C (66.0 F)
199619.0 C (66.2 F)
199716.8 C (62.2 F)
199821.6 C (70.9 F)
199919.4 C (66.9 F)
200019.0 C (66.2 F)
200118.8 C (65.8 F)
200218.3 C (64.9 F)
200319.1 C (66.4 F)
2004n/a
2005n/a
2006n/a
2007n/a
2008n/a
2009n/a
2010n/a
2011n/a
2012n/a
2013n/a
2014n/a
2015n/a
2016n/a
2017n/a
2018n/a
2019n/a
2020n/a
2021n/a
2022n/a
2023n/a
2024n/a
2025n/a

Wettest day (Rx1day)

Wettest day (Rx1day) at Port Moresby W.O. by year The wettest day of the year at Port Moresby W.O., 1970 to 2025. The record is 305.0 mm (12.0 in) in 1994, marked on the chart; the median year is 93.0 mm (3.7 in). 0100200300400197019801990200020102020Record: 305.0 mm (12.0 in) in 1994
The wettest day of the year at Port Moresby W.O., 1970 to 2025. The record is 305.0 mm (12.0 in) in 1994, marked on the chart; the median year is 93.0 mm (3.7 in).
Wettest day (Rx1day) at Port Moresby W.O. by year
YearWettest day (Rx1day)
1970103.0 mm (4.1 in)
197174.0 mm (2.9 in)
197274.0 mm (2.9 in)
1973138.0 mm (5.4 in)
197480.0 mm (3.1 in)
1975108.0 mm (4.3 in)
1976104.0 mm (4.1 in)
197780.0 mm (3.1 in)
197859.0 mm (2.3 in)
197979.0 mm (3.1 in)
198079.0 mm (3.1 in)
198166.0 mm (2.6 in)
1982113.0 mm (4.4 in)
198341.0 mm (1.6 in)
198478.0 mm (3.1 in)
1985186.0 mm (7.3 in)
1986147.0 mm (5.8 in)
1987140.0 mm (5.5 in)
198876.0 mm (3.0 in)
1989109.0 mm (4.3 in)
199098.0 mm (3.9 in)
199189.0 mm (3.5 in)
199285.0 mm (3.3 in)
199372.0 mm (2.8 in)
1994305.0 mm (12.0 in)
1995128.0 mm (5.0 in)
1996143.0 mm (5.6 in)
199772.0 mm (2.8 in)
199871.0 mm (2.8 in)
199994.0 mm (3.7 in)
2000155.0 mm (6.1 in)
200199.0 mm (3.9 in)
2002116.0 mm (4.6 in)
2003159.0 mm (6.3 in)
200469.1 mm (2.7 in)
200562.0 mm (2.4 in)
200690.2 mm (3.6 in)
2007163.1 mm (6.4 in)
200870.1 mm (2.8 in)
200978.0 mm (3.1 in)
201066.0 mm (2.6 in)
2011169.9 mm (6.7 in)
201250.0 mm (2.0 in)
2013135.9 mm (5.4 in)
201453.1 mm (2.1 in)
201572.9 mm (2.9 in)
201665.0 mm (2.6 in)
201791.9 mm (3.6 in)
201899.1 mm (3.9 in)
2019192.0 mm (7.6 in)
202099.1 mm (3.9 in)
2021105.9 mm (4.2 in)
202255.9 mm (2.2 in)
2023145.0 mm (5.7 in)
2024304.0 mm (12.0 in)
202595.0 mm (3.7 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Port Moresby W.O. by year The wettest five days of the year at Port Moresby W.O., 1970 to 2025. The record is 388.0 mm (15.3 in) in 1994, marked on the chart; the median year is 140.0 mm (5.5 in). 0100200300400197019801990200020102020Record: 388.0 mm (15.3 in) in 1994
The wettest five days of the year at Port Moresby W.O., 1970 to 2025. The record is 388.0 mm (15.3 in) in 1994, marked on the chart; the median year is 140.0 mm (5.5 in).
Wettest five days (Rx5day) at Port Moresby W.O. by year
YearWettest five days (Rx5day)
1970173.0 mm (6.8 in)
197194.0 mm (3.7 in)
1972113.0 mm (4.4 in)
1973183.0 mm (7.2 in)
1974146.0 mm (5.7 in)
1975218.0 mm (8.6 in)
1976135.0 mm (5.3 in)
1977133.0 mm (5.2 in)
1978109.0 mm (4.3 in)
1979167.0 mm (6.6 in)
1980144.0 mm (5.7 in)
1981129.0 mm (5.1 in)
1982164.0 mm (6.5 in)
198371.0 mm (2.8 in)
1984152.0 mm (6.0 in)
1985336.0 mm (13.2 in)
1986176.0 mm (6.9 in)
1987198.0 mm (7.8 in)
1988157.0 mm (6.2 in)
1989126.0 mm (5.0 in)
1990217.0 mm (8.5 in)
1991147.0 mm (5.8 in)
199299.0 mm (3.9 in)
1993107.0 mm (4.2 in)
1994388.0 mm (15.3 in)
1995152.0 mm (6.0 in)
1996208.0 mm (8.2 in)
1997123.0 mm (4.8 in)
1998147.0 mm (5.8 in)
1999104.0 mm (4.1 in)
2000175.0 mm (6.9 in)
2001164.0 mm (6.5 in)
2002140.0 mm (5.5 in)
2003193.0 mm (7.6 in)
200435.0 mm (1.4 in)
2005113.9 mm (4.5 in)
2006108.2 mm (4.3 in)
2007269.2 mm (10.6 in)
2008151.1 mm (5.9 in)
2009125.0 mm (4.9 in)
2010101.8 mm (4.0 in)
2011240.8 mm (9.5 in)
201297.5 mm (3.8 in)
2013242.1 mm (9.5 in)
201467.1 mm (2.6 in)
201562.3 mm (2.5 in)
2016n/a
2017148.8 mm (5.9 in)
2018212.0 mm (8.3 in)
2019119.2 mm (4.7 in)
202028.4 mm (1.1 in)
202157.7 mm (2.3 in)
202280.0 mm (3.1 in)
2023118.2 mm (4.7 in)
202491.3 mm (3.6 in)
2025115.4 mm (4.5 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Port Moresby W.O. by year The longest dry spell of the year at Port Moresby W.O., 1970 to 2025. The record is 94 days in 1987, marked on the chart; the median year is 23 days. 0255075100197019801990200020102020Record: 94 days in 1987
The longest dry spell of the year at Port Moresby W.O., 1970 to 2025. The record is 94 days in 1987, marked on the chart; the median year is 23 days.
Longest dry spell (CDD) at Port Moresby W.O. by year
YearLongest dry spell (CDD)
197025 days
197127 days
197266 days
197337 days
197440 days
197528 days
197656 days
197723 days
197835 days
197939 days
198050 days
198127 days
198265 days
198334 days
198447 days
198523 days
198636 days
198794 days
198821 days
198917 days
199032 days
199129 days
199237 days
199350 days
199476 days
199525 days
199620 days
199786 days
199853 days
199929 days
200023 days
200156 days
200244 days
200317 days
20043 days
20053 days
20064 days
20073 days
20083 days
20094 days
20103 days
20113 days
20123 days
20132 days
20144 days
20154 days
20162 days
20172 days
20183 days
20194 days
20202 days
20213 days
20224 days
20232 days
20243 days
20252 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Rainfall Return Levels

33 years, 1970 to 2002

A day with at least 92.0 mm (3.6 in) of rain is expected about once in 2 years. A day with at least 297.2 mm (11.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Port Moresby W.O.: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years92.0 mm (3.6 in)
5 years127.7 mm (5.0 in)
10 years157.6 mm (6.2 in)
25 years204.3 mm (8.0 in)
50 years246.9 mm (9.7 in)Longer than the 33 years of record
100 years297.2 mm (11.7 in)Longer than the 33 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 33 years of values from 1970 to 2002.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 305.0 mm (12.0 in) in 1994; 186.0 mm (7.3 in) in 1985; 155.0 mm (6.1 in) in 2000.

Download the Data

  • Data for Port Moresby W.O. standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Port Moresby W.O. threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2025-12-31).