Daily records
Page built 2026-10-16
Data as of 2025-12-31
Search
Built 2026-10-16 (16 October 2026)

Hamina Onkamaa Weather Records (FIE00143176)

Record envelope, standing records and threshold days for Hamina Onkamaa (FIE00143176), Finland, with 40 years of record.

Key Facts for Hamina Onkamaa

  • Hamina Onkamaa (FIE00143176) is a weather station in Finland at 60.65 latitude and 27.42 longitude, 35 m (115 ft) above sea level.
  • The station reports from 1969 to 2008, 40 years of record.
  • 0 records set at Hamina Onkamaa still stand.
  • Records are tracked for prcp: an element needs 30 years of data to be eligible.
  • Hamina Onkamaa set a daily record precipitation of 24.9 mm (1.0 in) on 24 November 2008.

About the Station

  • Location: Finland, 60.65 latitude, 27.42 longitude.
  • Elevation: 35 m (115 ft).
  • Period of record: 1969 to 2008, 40 years.
  • Eligible elements: prcp.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Hamina Onkamaa, with 2026 drawn through them The band shows the record high and record low for each calendar day at Hamina Onkamaa. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. 000111 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Hamina Onkamaa. 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 Hamina Onkamaa, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jann/an/an/an/a
Febn/an/an/an/a
Marn/an/an/an/a
Aprn/an/an/an/a
Mayn/an/an/an/a
Junn/an/an/an/a
Juln/an/an/an/a
Augn/an/an/an/a
Sepn/an/an/an/a
Octn/an/an/an/a
Novn/an/an/an/a
Decn/an/an/an/a

Which Years Hold Standing Records

0 standing records
Standing records at Hamina Onkamaa by the year they were set 0 records at Hamina Onkamaa still stand. 00000000000
0 records at Hamina Onkamaa still stand.
Standing records at Hamina Onkamaa by the year they were set
Year setStanding records

Wettest Day of Each Month

Aug: 80.2 mm (3.2 in)
Record daily precipitation for each month at Hamina Onkamaa The wettest day on record for each calendar month at Hamina Onkamaa. The most was 80.2 mm (3.2 in) on 9 August 1991. 0255075100 Jan: 33.3 mm (1.3 in), 13 January 1994 Jan Feb: 36.9 mm (1.5 in), 16 February 1999 Feb Mar: 25.2 mm (1.0 in), 21 March 1974 Mar Apr: 22.0 mm (0.9 in), 2 April 1985 Apr May: 29.2 mm (1.1 in), 26 May 2007 May Jun: 33.6 mm (1.3 in), 24 June 2004 Jun Jul: 38.9 mm (1.5 in), 1 July 1996 Jul Aug: 80.2 mm (3.2 in), 9 August 1991 Aug Sep: 72.7 mm (2.9 in), 12 September 1988 Sep Oct: 34.8 mm (1.4 in), 27 October 2006 Oct Nov: 32.7 mm (1.3 in), 18 November 1980 Nov Dec: 40.2 mm (1.6 in), 19 December 1993 Dec
The wettest day on record for each calendar month at Hamina Onkamaa. The most was 80.2 mm (3.2 in) on 9 August 1991.
Record daily precipitation for each month at Hamina Onkamaa
MonthRecord daily precipitation (mm)Date
Jan33.3 mm (1.3 in)13 January 1994
Feb36.9 mm (1.5 in)16 February 1999
Mar25.2 mm (1.0 in)21 March 1974
Apr22.0 mm (0.9 in)2 April 1985
May29.2 mm (1.1 in)26 May 2007
Jun33.6 mm (1.3 in)24 June 2004
Jul38.9 mm (1.5 in)1 July 1996
Aug80.2 mm (3.2 in)9 August 1991
Sep72.7 mm (2.9 in)12 September 1988
Oct34.8 mm (1.4 in)27 October 2006
Nov32.7 mm (1.3 in)18 November 1980
Dec40.2 mm (1.6 in)19 December 1993

Latest Records

20
Latest records at Hamina Onkamaa
DateStationRecordValueBeat old record byOld record stoodSignificance
24 November 2008Hamina Onkamaa, FIdaily rain24.9 mm (1.0 in)6.3 mm (0.25 in)22 years20 of 100 (Routine)
11 November 2008Hamina Onkamaa, FIdaily rain15.6 mm (0.6 in)0.7 mm (0.03 in)22 years11 of 100 (Routine)
26 October 2008Hamina Onkamaa, FIdaily rain18.8 mm (0.7 in)3.9 mm (0.15 in)28 years18 of 100 (Routine)
16 October 2008Hamina Onkamaa, FIdaily rain21.3 mm (0.8 in)11.1 mm (0.4 in)27 years20 of 100 (Routine)
2 October 2008Hamina Onkamaa, FIdaily rain31.1 mm (1.2 in)13.2 mm (0.5 in)35 years34 of 100 (Routine)
3 July 2008Hamina Onkamaa, FIdaily rain16.2 mm (0.6 in)2.6 mm (0.10 in)31 years16 of 100 (Routine)
23 June 2008Hamina Onkamaa, FIdaily rain27.8 mm (1.1 in)13.9 mm (0.5 in)10 years29 of 100 (Routine)
11 June 2008Hamina Onkamaa, FIdaily rain16.6 mm (0.7 in)3.6 mm (0.14 in)25 years16 of 100 (Routine)
7 April 2008Hamina Onkamaa, FIdaily rain11.2 mm (0.4 in)1.0 mm (0.04 in)31 years15 of 100 (Routine)
26 March 2008Hamina Onkamaa, FIdaily rain12.0 mm (0.5 in)0.5 mm (0.02 in)23 years11 of 100 (Routine)
25 March 2008Hamina Onkamaa, FIdaily rain16.7 mm (0.7 in)0.5 mm (0.02 in)4 years6 of 100 (Routine)
28 February 2008Hamina Onkamaa, FIdaily rain8.3 mm (0.33 in)1.1 mm (0.04 in)8 years8 of 100 (Routine)
24 February 2008Hamina Onkamaa, FIdaily rain9.9 mm (0.39 in)1.6 mm (0.06 in)10 years10 of 100 (Routine)
21 January 2008Hamina Onkamaa, FIdaily rain12.9 mm (0.5 in)0.4 mm (0.02 in)2 years4 of 100 (Routine)
19 January 2008Hamina Onkamaa, FIdaily rain23.5 mm (0.9 in)12.5 mm (0.5 in)20 years20 of 100 (Routine)
18 September 2007Hamina Onkamaa, FIdaily rain39.1 mm (1.5 in)18.5 mm (0.7 in)28 years36 of 100 (Notable)
22 August 2007Hamina Onkamaa, FIdaily rain11.7 mm (0.5 in)1.8 mm (0.07 in)8 years7 of 100 (Routine)
30 July 2007Hamina Onkamaa, FIdaily rain31.7 mm (1.2 in)12.4 mm (0.5 in)24 years28 of 100 (Routine)
14 July 2007Hamina Onkamaa, FIdaily rain31.1 mm (1.2 in)5.9 mm (0.23 in)16 years16 of 100 (Routine)
14 June 2007Hamina Onkamaa, FIdaily rain26.8 mm (1.1 in)3.6 mm (0.14 in)4 years9 of 100 (Routine)

Extremes by Year

1969 to 2008
Yearly extremes at Hamina Onkamaa: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)80.2 mm (3.2 in)199132.0 mm (1.3 in)39
Wettest five days (Rx5day)100.6 mm (4.0 in)200459.3 mm (2.3 in)39
Longest dry spell (CDD)46 days199224 days39

Wettest day (Rx1day)

Wettest day (Rx1day) at Hamina Onkamaa by year The wettest day of the year at Hamina Onkamaa, 1969 to 2008. The record is 80.2 mm (3.2 in) in 1991, marked on the chart; the median year is 32.0 mm (1.3 in). 204060801001970198019902000Record: 80.2 mm (3.2 in) in 1991
The wettest day of the year at Hamina Onkamaa, 1969 to 2008. The record is 80.2 mm (3.2 in) in 1991, marked on the chart; the median year is 32.0 mm (1.3 in).
Wettest day (Rx1day) at Hamina Onkamaa by year
YearWettest day (Rx1day)
196928.5 mm (1.1 in)
197032.5 mm (1.3 in)
197129.4 mm (1.2 in)
197236.0 mm (1.4 in)
197328.0 mm (1.1 in)
197426.5 mm (1.0 in)
197628.5 mm (1.1 in)
197728.5 mm (1.1 in)
197820.8 mm (0.8 in)
197932.0 mm (1.3 in)
198032.7 mm (1.3 in)
198127.3 mm (1.1 in)
198228.1 mm (1.1 in)
198342.7 mm (1.7 in)
198430.1 mm (1.2 in)
198529.4 mm (1.2 in)
198634.8 mm (1.4 in)
198722.8 mm (0.9 in)
198872.7 mm (2.9 in)
198928.6 mm (1.1 in)
199031.2 mm (1.2 in)
199180.2 mm (3.2 in)
199239.0 mm (1.5 in)
199340.2 mm (1.6 in)
199433.3 mm (1.3 in)
199526.5 mm (1.0 in)
199638.9 mm (1.5 in)
199731.7 mm (1.2 in)
199834.6 mm (1.4 in)
199936.9 mm (1.5 in)
200035.8 mm (1.4 in)
200132.7 mm (1.3 in)
200225.4 mm (1.0 in)
200326.1 mm (1.0 in)
200444.0 mm (1.7 in)
200539.1 mm (1.5 in)
200634.8 mm (1.4 in)
200739.1 mm (1.5 in)
200831.1 mm (1.2 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Hamina Onkamaa by year The wettest five days of the year at Hamina Onkamaa, 1969 to 2008. The record is 100.6 mm (4.0 in) in 2004, marked on the chart; the median year is 59.3 mm (2.3 in). 4060801001201970198019902000Record: 100.6 mm (4.0 in) in 2004
The wettest five days of the year at Hamina Onkamaa, 1969 to 2008. The record is 100.6 mm (4.0 in) in 2004, marked on the chart; the median year is 59.3 mm (2.3 in).
Wettest five days (Rx5day) at Hamina Onkamaa by year
YearWettest five days (Rx5day)
196957.6 mm (2.3 in)
197065.1 mm (2.6 in)
197154.1 mm (2.1 in)
197258.3 mm (2.3 in)
197359.3 mm (2.3 in)
197460.9 mm (2.4 in)
197655.5 mm (2.2 in)
197762.8 mm (2.5 in)
197844.5 mm (1.8 in)
197975.4 mm (3.0 in)
198090.1 mm (3.5 in)
198152.0 mm (2.0 in)
198283.4 mm (3.3 in)
198376.3 mm (3.0 in)
198459.9 mm (2.4 in)
198576.6 mm (3.0 in)
198659.4 mm (2.3 in)
198757.0 mm (2.2 in)
198882.8 mm (3.3 in)
198951.1 mm (2.0 in)
199045.9 mm (1.8 in)
1991100.4 mm (4.0 in)
199254.5 mm (2.1 in)
199343.0 mm (1.7 in)
199454.7 mm (2.2 in)
199548.2 mm (1.9 in)
199668.4 mm (2.7 in)
199745.8 mm (1.8 in)
199860.9 mm (2.4 in)
199957.2 mm (2.3 in)
200057.6 mm (2.3 in)
200166.6 mm (2.6 in)
200252.1 mm (2.1 in)
200361.2 mm (2.4 in)
2004100.6 mm (4.0 in)
200557.7 mm (2.3 in)
200686.7 mm (3.4 in)
200762.2 mm (2.4 in)
200856.9 mm (2.2 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Hamina Onkamaa by year The longest dry spell of the year at Hamina Onkamaa, 1969 to 2008. The record is 46 days in 1992, marked on the chart; the median year is 24 days. 10203040501970198019902000Record: 46 days in 1992
The longest dry spell of the year at Hamina Onkamaa, 1969 to 2008. The record is 46 days in 1992, marked on the chart; the median year is 24 days.
Longest dry spell (CDD) at Hamina Onkamaa by year
YearLongest dry spell (CDD)
196940 days
197034 days
197142 days
197228 days
197315 days
197424 days
197620 days
197715 days
197830 days
197918 days
198023 days
198119 days
198227 days
198328 days
198431 days
198514 days
198636 days
198726 days
198822 days
198917 days
199015 days
199120 days
199246 days
199335 days
199435 days
199524 days
199646 days
199732 days
199820 days
199933 days
200026 days
200122 days
200237 days
200324 days
200415 days
200524 days
200624 days
200719 days
200823 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

39 years, 1969 to 2008

A day with at least 31.4 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 78.5 mm (3.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Hamina Onkamaa: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years31.4 mm (1.2 in)
5 years39.0 mm (1.5 in)
10 years45.6 mm (1.8 in)
25 years56.3 mm (2.2 in)
50 years66.3 mm (2.6 in)Longer than the 39 years of record
100 years78.5 mm (3.1 in)Longer than the 39 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, 39 years of values from 1969 to 2008.

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: 80.2 mm (3.2 in) in 1991; 72.7 mm (2.9 in) in 1988; 44.0 mm (1.7 in) in 2004.

Download the Data

  • Data for Hamina Onkamaa standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Hamina Onkamaa 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).