Built 2026-10-14 (14 October 2026)

Norah Head Lighthouse Weather Records (ASN00061273)

Record envelope, standing records and threshold days for Norah Head Lighthouse (ASN00061273), Australia, with 37 years of record.

Key Facts for Norah Head Lighthouse

  • Norah Head Lighthouse (ASN00061273) is a weather station in Australia at -33.28 latitude and 151.58 longitude, 27 m (89 ft) above sea level.
  • The station reports from 1969 to 2005, 37 years of record.
  • 1,464 records set at Norah Head Lighthouse still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Norah Head Lighthouse set a daily record precipitation of 86.4 mm (3.4 in) on 17 May 2005.

About the Station

  • Location: Australia, -33.28 latitude, 151.58 longitude.
  • Elevation: 27 m (89 ft).
  • Period of record: 1969 to 2005, 37 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 Norah Head Lighthouse, with 2026 drawn through them The band shows the record high and record low for each calendar day at Norah Head Lighthouse. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. 01020304050 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Norah Head Lighthouse. 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 Norah Head Lighthouse, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan38.3 C (100.9 F)11.0 C (51.8 F)n/an/a
Feb39.1 C (102.4 F)11.6 C (52.9 F)n/an/a
Mar37.3 C (99.1 F)11.1 C (52.0 F)n/an/a
Apr35.6 C (96.1 F)8.5 C (47.3 F)n/an/a
May29.0 C (84.2 F)5.4 C (41.7 F)n/an/a
Jun25.4 C (77.7 F)3.6 C (38.5 F)n/an/a
Jul26.0 C (78.8 F)3.4 C (38.1 F)n/an/a
Aug30.1 C (86.2 F)4.0 C (39.2 F)n/an/a
Sep34.8 C (94.6 F)5.5 C (41.9 F)n/an/a
Oct36.5 C (97.7 F)6.6 C (43.9 F)n/an/a
Nov38.6 C (101.5 F)9.0 C (48.2 F)n/an/a
Dec40.2 C (104.4 F)8.4 C (47.1 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Norah Head Lighthouse by the year they were set 1,464 records at Norah Head Lighthouse still stand. 1995 holds the most, with 65. 0204060801969: 271970: 451971: 351972: 471973: 421974: 361975: 551976: 371977: 371978: 371979: 171980: 561981: 321982: 351983: 491984: 531985: 391986: 501987: 521988: 361989: 391990: 411991: 401992: 251993: 431994: 481995: 651996: 601997: 381998: 501999: 372000: 342001: 342002: 332003: 352004: 25196919731977198119851989199319972001
1,464 records at Norah Head Lighthouse still stand. 1995 holds the most, with 65.
Standing records at Norah Head Lighthouse by the year they were set
Year setStanding records
196927
197045
197135
197247
197342
197436
197555
197637
197737
197837
197917
198056
198132
198235
198349
198453
198539
198650
198752
198836
198939
199041
199140
199225
199343
199448
199565
199660
199738
199850
199937
200034
200134
200233
200335
200425

Wettest Day of Each Month

Feb: 246.0 mm (9.7 in)
Record daily precipitation for each month at Norah Head Lighthouse The wettest day on record for each calendar month at Norah Head Lighthouse. The most was 246.0 mm (9.7 in) on 3 February 1990. 0100200300 Jan: 235.2 mm (9.3 in), 29 January 1978 Jan Feb: 246.0 mm (9.7 in), 3 February 1990 Feb Mar: 148.1 mm (5.8 in), 4 March 1977 Mar Apr: 105.0 mm (4.1 in), 2 April 1999 Apr May: 149.1 mm (5.9 in), 18 May 1974 May Jun: 151.0 mm (5.9 in), 2 June 1978 Jun Jul: 118.3 mm (4.7 in), 5 July 1997 Jul Aug: 113.0 mm (4.4 in), 31 August 1996 Aug Sep: 134.0 mm (5.3 in), 20 September 1982 Sep Oct: 112.0 mm (4.4 in), 14 October 1985 Oct Nov: 168.0 mm (6.6 in), 11 November 1989 Nov Dec: 122.6 mm (4.8 in), 17 December 1983 Dec
The wettest day on record for each calendar month at Norah Head Lighthouse. The most was 246.0 mm (9.7 in) on 3 February 1990.
Record daily precipitation for each month at Norah Head Lighthouse
MonthRecord daily precipitation (mm)Date
Jan235.2 mm (9.3 in)29 January 1978
Feb246.0 mm (9.7 in)3 February 1990
Mar148.1 mm (5.8 in)4 March 1977
Apr105.0 mm (4.1 in)2 April 1999
May149.1 mm (5.9 in)18 May 1974
Jun151.0 mm (5.9 in)2 June 1978
Jul118.3 mm (4.7 in)5 July 1997
Aug113.0 mm (4.4 in)31 August 1996
Sep134.0 mm (5.3 in)20 September 1982
Oct112.0 mm (4.4 in)14 October 1985
Nov168.0 mm (6.6 in)11 November 1989
Dec122.6 mm (4.8 in)17 December 1983

Period of Record Coverage

1969 to 2004
Days with data per year at Norah Head Lighthouse 36 years of record at Norah Head Lighthouse, 1969 to 2004. 5 years have data for under 90 percent of days and are left out of rankings: 1969, 1972, 1979, 2003, 2004. 1969: 174 of 365 days1970: 365 of 365 days1971: 362 of 365 days1972: 307 of 366 days1973: 365 of 365 days1974: 363 of 365 days1975: 365 of 365 days1976: 365 of 366 days1977: 362 of 365 days1978: 360 of 365 days1979: 238 of 365 days1980: 364 of 366 days1981: 365 of 365 days1982: 364 of 365 days1983: 363 of 365 days1984: 366 of 366 days1985: 363 of 365 days1986: 364 of 365 days1987: 361 of 365 days1988: 362 of 366 days1989: 337 of 365 days1990: 363 of 365 days1991: 362 of 365 days1992: 366 of 366 days1993: 363 of 365 days1994: 365 of 365 days1995: 357 of 365 days1996: 364 of 366 days1997: 365 of 365 days1998: 365 of 365 days1999: 330 of 365 days2000: 336 of 366 days2001: 347 of 365 days2002: 345 of 365 days2003: 309 of 365 days2004: 222 of 366 days1970197519801985199019952000
36 years of record at Norah Head Lighthouse, 1969 to 2004. 5 years have data for under 90 percent of days and are left out of rankings: 1969, 1972, 1979, 2003, 2004.
Days with data per year at Norah Head Lighthouse
YearDays with dataShare of yearComplete
196917448%No
1970365100%Yes
197136299%Yes
197230784%No
1973365100%Yes
197436399%Yes
1975365100%Yes
1976365100%Yes
197736299%Yes
197836099%Yes
197923865%No
198036499%Yes
1981365100%Yes
1982364100%Yes
198336399%Yes
1984366100%Yes
198536399%Yes
1986364100%Yes
198736199%Yes
198836299%Yes
198933792%Yes
199036399%Yes
199136299%Yes
1992366100%Yes
199336399%Yes
1994365100%Yes
199535798%Yes
199636499%Yes
1997365100%Yes
1998365100%Yes
199933090%Yes
200033692%Yes
200134795%Yes
200234595%Yes
200330985%No
200422261%No

Latest Records

20
Latest records at Norah Head Lighthouse
DateStationRecordValueBeat old record byOld record stoodSignificance
17 May 2005Norah Head Lighthouse, AUdaily rain86.4 mm (3.4 in)43.8 mm (1.7 in)7 years32 of 100 (Routine)
18 October 2004Norah Head Lighthouse, AUdaily rain48.6 mm (1.9 in)35.0 mm (1.4 in)23 years41 of 100 (Notable)
17 October 2004Norah Head Lighthouse, AUdaily low max (Tie)16.7 C (62.1 F)tie22 years2 of 100 (Routine)
2 October 2004Norah Head Lighthouse, AUdaily rain77.6 mm (3.1 in)53.4 mm (2.1 in)29 years51 of 100 (Notable)
1 October 2004Norah Head Lighthouse, AUdaily low max17.0 C (62.6 F)0.2 C (0.4 F)35 years13 of 100 (Routine)
29 September 2004Norah Head Lighthouse, AUdaily high max30.2 C (86.4 F)0.3 C (0.5 F)6 years4 of 100 (Routine)
28 August 2004Norah Head Lighthouse, AUdaily high min15.0 C (59.0 F)0.5 C (0.9 F)6 years6 of 100 (Routine)
22 August 2004Norah Head Lighthouse, AUdaily high max26.5 C (79.7 F)3.9 C (7.0 F)4 years18 of 100 (Routine)
19 August 2004Norah Head Lighthouse, AUdaily rain37.6 mm (1.5 in)22.4 mm (0.9 in)17 years23 of 100 (Routine)
11 August 2004Norah Head Lighthouse, AUdaily low min (Tie)6.3 C (43.3 F)tie19 years2 of 100 (Routine)
20 July 2004Norah Head Lighthouse, AUdaily rain21.4 mm (0.8 in)13.0 mm (0.5 in)10 years16 of 100 (Routine)
19 July 2004Norah Head Lighthouse, AUdaily low max12.9 C (55.2 F)1.5 C (2.7 F)33 years18 of 100 (Routine)
18 July 2004Norah Head Lighthouse, AUdaily rain9.8 mm (0.39 in)6.4 mm (0.25 in)23 years14 of 100 (Routine)
11 July 2004Norah Head Lighthouse, AUdaily high min (Tie)12.9 C (55.2 F)tie3 years0 of 100 (Routine)
4 July 2004Norah Head Lighthouse, AUdaily high max25.7 C (78.3 F)2.3 C (4.1 F)12 years15 of 100 (Routine)
30 June 2004Norah Head Lighthouse, AUdaily high max22.2 C (72.0 F)1.2 C (2.2 F)30 years17 of 100 (Routine)
20 June 2004Norah Head Lighthouse, AUdaily low min6.8 C (44.2 F)0.7 C (1.3 F)22 years12 of 100 (Routine)
14 June 2004Norah Head Lighthouse, AUdaily high max24.3 C (75.7 F)3.3 C (5.9 F)15 years21 of 100 (Routine)
14 June 2004Norah Head Lighthouse, AUdaily high min13.5 C (56.3 F)0.3 C (0.5 F)24 years11 of 100 (Routine)
13 June 2004Norah Head Lighthouse, AUdaily high max23.0 C (73.4 F)0.3 C (0.5 F)1 year4 of 100 (Routine)

Climate Trend

31 complete years, 1970 to 2003
Annual mean temperature at Norah Head Lighthouse as warming stripes, 1970 to 2003 One stripe for each of 31 complete years at Norah Head Lighthouse, 1970 to 2003. Blue stripes are years cooler than the station's own mean of 18.1 C (64.6 F); red stripes are warmer. The coolest year was 1992, at 17.4 C (63.4 F), and the warmest was 1980, at 18.9 C (66.1 F). The strongest colour marks a difference of 0.9 C (1.6 F). 1970: 17.9 C, -0.3 C from the station mean1971: 17.8 C, -0.3 C from the station mean1973: 18.8 C, +0.6 C from the station mean1974: 17.9 C, -0.2 C from the station mean1975: 18.4 C, +0.3 C from the station mean1976: 18.1 C, 0.0 C from the station mean1977: 18.4 C, +0.2 C from the station mean1978: 17.9 C, -0.2 C from the station mean1980: 18.9 C, +0.8 C from the station mean1981: 18.4 C, +0.3 C from the station mean1982: 18.0 C, -0.1 C from the station mean1983: 18.0 C, -0.1 C from the station mean1984: 17.6 C, -0.6 C from the station mean1985: 17.7 C, -0.4 C from the station mean1986: 17.7 C, -0.5 C from the station mean1987: 17.9 C, -0.2 C from the station mean1988: 18.4 C, +0.3 C from the station mean1990: 18.0 C, -0.2 C from the station mean1991: 18.4 C, +0.2 C from the station mean1992: 17.4 C, -0.7 C from the station mean1993: 17.8 C, -0.4 C from the station mean1994: 18.0 C, -0.1 C from the station mean1995: 17.7 C, -0.5 C from the station mean1996: 17.8 C, -0.4 C from the station mean1997: 18.3 C, +0.2 C from the station mean1998: 18.8 C, +0.6 C from the station mean1999: 18.5 C, +0.3 C from the station mean2000: 18.3 C, +0.2 C from the station mean2001: 18.7 C, +0.6 C from the station mean2002: 18.5 C, +0.3 C from the station mean2003: 18.2 C, +0.1 C from the station mean1970197519801985199019952000
One stripe for each of 31 complete years at Norah Head Lighthouse, 1970 to 2003. Blue stripes are years cooler than the station's own mean of 18.1 C (64.6 F); red stripes are warmer. The coolest year was 1992, at 17.4 C (63.4 F), and the warmest was 1980, at 18.9 C (66.1 F). The strongest colour marks a difference of 0.9 C (1.6 F).
Annual mean temperature at Norah Head Lighthouse as warming stripes, 1970 to 2003
YearAnnual mean temperatureDifference from the station mean
197017.9 C-0.25 C
197117.8 C-0.31 C
197318.8 C+0.65 C
197417.9 C-0.20 C
197518.4 C+0.30 C
197618.1 C0.00 C
197718.4 C+0.22 C
197817.9 C-0.21 C
198018.9 C+0.81 C
198118.4 C+0.26 C
198218.0 C-0.14 C
198318.0 C-0.09 C
198417.6 C-0.57 C
198517.7 C-0.40 C
198617.7 C-0.46 C
198717.9 C-0.20 C
198818.4 C+0.29 C
199018.0 C-0.18 C
199118.4 C+0.24 C
199217.4 C-0.70 C
199317.8 C-0.37 C
199418.0 C-0.12 C
199517.7 C-0.45 C
199617.8 C-0.35 C
199718.3 C+0.19 C
199818.8 C+0.65 C
199918.5 C+0.33 C
200018.3 C+0.20 C
200118.7 C+0.59 C
200218.5 C+0.33 C
200318.2 C+0.07 C

The fitted trend in annual mean temperature here over 1970 to 2003 is 0.04 C (-0.10 to 0.19) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.2 to 0.3) per decade. The slope is a straight line fitted to 31 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Norah Head Lighthouse
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.04 C (-0.10 to 0.19) per decade0.1 F (-0.2 to 0.3) per decade1970 to 200331Not clearly different from zero
Mean daily maximum0.1 C (-0.1 to 0.3) per decade0.2 F (-0.1 to 0.5) per decade1970 to 200331Not clearly different from zero
Mean daily minimum-0.01 C (-0.16 to 0.14) per decade-0.02 F (-0.29 to 0.26) per decade1970 to 200331Not clearly different from zero

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

1969 to 2005
Yearly extremes at Norah Head Lighthouse: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)40.2 C (104.4 F)199436.8 C (98.3 F)36
Coldest night (TNn)3.4 C (38.1 F)19865.3 C (41.5 F)36
Wettest day (Rx1day)246.0 mm (9.7 in)199094.8 mm (3.7 in)37
Wettest five days (Rx5day)476.4 mm (18.8 in)1990153.4 mm (6.0 in)37
Longest dry spell (CDD)44 days199522 days37

Hottest day (TXx)

Hottest day (TXx) at Norah Head Lighthouse by year The hottest day of the year at Norah Head Lighthouse, 1969 to 2005. The record is 40.2 C (104.4 F) in 1994, marked on the chart; the median year is 36.8 C (98.3 F). 3234363840421970198019902000Record: 40.2 C (104.4 F) in 1994
The hottest day of the year at Norah Head Lighthouse, 1969 to 2005. The record is 40.2 C (104.4 F) in 1994, marked on the chart; the median year is 36.8 C (98.3 F).
Hottest day (TXx) at Norah Head Lighthouse by year
YearHottest day (TXx)
196932.8 C (91.0 F)
197035.6 C (96.1 F)
197133.4 C (92.1 F)
197235.3 C (95.5 F)
197335.6 C (96.1 F)
197437.5 C (99.5 F)
197536.8 C (98.2 F)
197637.5 C (99.5 F)
197738.7 C (101.7 F)
197834.6 C (94.3 F)
197939.0 C (102.2 F)
198036.9 C (98.4 F)
198138.4 C (101.1 F)
198236.8 C (98.2 F)
198339.2 C (102.6 F)
198434.4 C (93.9 F)
198537.6 C (99.7 F)
198635.7 C (96.3 F)
198737.2 C (99.0 F)
198835.2 C (95.4 F)
198934.8 C (94.6 F)
199036.8 C (98.2 F)
199137.4 C (99.3 F)
199235.2 C (95.4 F)
199335.7 C (96.3 F)
199440.2 C (104.4 F)
199538.6 C (101.5 F)
199636.5 C (97.7 F)
199737.7 C (99.9 F)
199836.8 C (98.2 F)
199933.0 C (91.4 F)
200038.4 C (101.1 F)
200139.2 C (102.6 F)
200238.6 C (101.5 F)
200337.0 C (98.6 F)
200439.1 C (102.4 F)
2005n/a

Coldest night (TNn)

Coldest night (TNn) at Norah Head Lighthouse by year The coldest night of the year at Norah Head Lighthouse, 1969 to 2005. The record is 3.4 C (38.1 F) in 1986, marked on the chart; the median year is 5.3 C (41.5 F). 345671970198019902000Record: 3.4 C (38.1 F) in 1986
The coldest night of the year at Norah Head Lighthouse, 1969 to 2005. The record is 3.4 C (38.1 F) in 1986, marked on the chart; the median year is 5.3 C (41.5 F).
Coldest night (TNn) at Norah Head Lighthouse by year
YearColdest night (TNn)
19695.0 C (41.0 F)
19705.6 C (42.1 F)
19713.9 C (39.0 F)
19725.0 C (41.0 F)
19736.8 C (44.2 F)
19745.6 C (42.1 F)
19754.2 C (39.6 F)
19765.6 C (42.1 F)
19776.0 C (42.8 F)
19783.6 C (38.5 F)
19796.2 C (43.2 F)
19806.3 C (43.3 F)
19815.6 C (42.1 F)
19826.0 C (42.8 F)
19833.6 C (38.5 F)
19844.4 C (39.9 F)
19854.0 C (39.2 F)
19863.4 C (38.1 F)
19875.4 C (41.7 F)
19886.0 C (42.8 F)
19894.6 C (40.3 F)
19905.0 C (41.0 F)
19915.5 C (41.9 F)
19925.2 C (41.4 F)
19935.3 C (41.5 F)
19945.4 C (41.7 F)
19954.9 C (40.8 F)
19964.0 C (39.2 F)
19976.2 C (43.2 F)
19984.6 C (40.3 F)
19994.8 C (40.6 F)
20005.7 C (42.3 F)
20016.2 C (43.2 F)
20025.3 C (41.5 F)
20034.5 C (40.1 F)
20046.3 C (43.3 F)
2005n/a

Wettest day (Rx1day)

Wettest day (Rx1day) at Norah Head Lighthouse by year The wettest day of the year at Norah Head Lighthouse, 1969 to 2005. The record is 246.0 mm (9.7 in) in 1990, marked on the chart; the median year is 94.8 mm (3.7 in). 01002003001970198019902000Record: 246.0 mm (9.7 in) in 1990
The wettest day of the year at Norah Head Lighthouse, 1969 to 2005. The record is 246.0 mm (9.7 in) in 1990, marked on the chart; the median year is 94.8 mm (3.7 in).
Wettest day (Rx1day) at Norah Head Lighthouse by year
YearWettest day (Rx1day)
196970.4 mm (2.8 in)
1970127.0 mm (5.0 in)
197169.1 mm (2.7 in)
197255.6 mm (2.2 in)
197359.9 mm (2.4 in)
1974149.1 mm (5.9 in)
1975121.2 mm (4.8 in)
197681.6 mm (3.2 in)
1977148.1 mm (5.8 in)
1978235.2 mm (9.3 in)
197969.2 mm (2.7 in)
198061.6 mm (2.4 in)
1981158.6 mm (6.2 in)
1982134.0 mm (5.3 in)
1983122.6 mm (4.8 in)
198492.2 mm (3.6 in)
1985112.0 mm (4.4 in)
198694.8 mm (3.7 in)
198792.0 mm (3.6 in)
198895.8 mm (3.8 in)
1989168.0 mm (6.6 in)
1990246.0 mm (9.7 in)
199168.0 mm (2.7 in)
1992116.0 mm (4.6 in)
199340.2 mm (1.6 in)
199457.4 mm (2.3 in)
199553.8 mm (2.1 in)
1996113.0 mm (4.4 in)
1997124.4 mm (4.9 in)
1998103.4 mm (4.1 in)
1999105.0 mm (4.1 in)
200071.6 mm (2.8 in)
200169.2 mm (2.7 in)
200271.4 mm (2.8 in)
2003125.0 mm (4.9 in)
200477.6 mm (3.1 in)
200586.4 mm (3.4 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Norah Head Lighthouse by year The wettest five days of the year at Norah Head Lighthouse, 1969 to 2005. The record is 476.4 mm (18.8 in) in 1990, marked on the chart; the median year is 153.4 mm (6.0 in). 01002003004005001970198019902000Record: 476.4 mm (18.8 in) in 1990
The wettest five days of the year at Norah Head Lighthouse, 1969 to 2005. The record is 476.4 mm (18.8 in) in 1990, marked on the chart; the median year is 153.4 mm (6.0 in).
Wettest five days (Rx5day) at Norah Head Lighthouse by year
YearWettest five days (Rx5day)
1969122.8 mm (4.8 in)
1970153.4 mm (6.0 in)
1971119.4 mm (4.7 in)
1972127.7 mm (5.0 in)
1973124.4 mm (4.9 in)
1974182.1 mm (7.2 in)
1975183.2 mm (7.2 in)
1976203.0 mm (8.0 in)
1977270.2 mm (10.6 in)
1978264.4 mm (10.4 in)
1979176.4 mm (6.9 in)
198077.6 mm (3.1 in)
1981290.2 mm (11.4 in)
1982236.0 mm (9.3 in)
1983153.2 mm (6.0 in)
1984183.8 mm (7.2 in)
1985138.8 mm (5.5 in)
1986179.6 mm (7.1 in)
1987113.2 mm (4.5 in)
1988262.1 mm (10.3 in)
1989206.2 mm (8.1 in)
1990476.4 mm (18.8 in)
1991127.4 mm (5.0 in)
1992179.1 mm (7.1 in)
199382.2 mm (3.2 in)
1994147.6 mm (5.8 in)
1995114.8 mm (4.5 in)
1996152.2 mm (6.0 in)
1997238.5 mm (9.4 in)
1998196.6 mm (7.7 in)
1999282.8 mm (11.1 in)
2000133.8 mm (5.3 in)
2001128.6 mm (5.1 in)
2002182.4 mm (7.2 in)
2003137.2 mm (5.4 in)
2004112.2 mm (4.4 in)
2005119.2 mm (4.7 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Norah Head Lighthouse by year The longest dry spell of the year at Norah Head Lighthouse, 1969 to 2005. The record is 44 days in 1995, marked on the chart; the median year is 22 days. 10203040501970198019902000Record: 44 days in 1995
The longest dry spell of the year at Norah Head Lighthouse, 1969 to 2005. The record is 44 days in 1995, marked on the chart; the median year is 22 days.
Longest dry spell (CDD) at Norah Head Lighthouse by year
YearLongest dry spell (CDD)
196922 days
197038 days
197118 days
197232 days
197317 days
197420 days
197541 days
197618 days
197731 days
197822 days
197922 days
198031 days
198126 days
198225 days
198316 days
198417 days
198529 days
198625 days
198722 days
198838 days
198934 days
199021 days
199117 days
199217 days
199321 days
199425 days
199544 days
199621 days
199718 days
199813 days
199916 days
200022 days
200136 days
200241 days
200329 days
200422 days
200523 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 2003

A day with at least 97.9 mm (3.9 in) of rain is expected about once in 2 years. A day with at least 270.5 mm (10.6 in) of rain is expected about once in 100 years.

Rainfall return levels at Norah Head Lighthouse: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years97.9 mm (3.9 in)
5 years140.1 mm (5.5 in)
10 years169.5 mm (6.7 in)
25 years208.6 mm (8.2 in)
50 years239.0 mm (9.4 in)Longer than the 33 years of record
100 years270.5 mm (10.6 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 2003.

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: 246.0 mm (9.7 in) in 1990; 235.2 mm (9.3 in) in 1978; 168.0 mm (6.6 in) in 1989.

Download the Data

  • Data for Norah Head Lighthouse standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Norah Head Lighthouse 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-13).