Helsinki-Malmin Lentoasema Weather Records (FIE00142241)
Record envelope, standing records and threshold days for Helsinki-Malmin Lentoasema (FIE00142241), Finland, with 68 years of record.
Key Facts for Helsinki-Malmin Lentoasema
- Helsinki-Malmin Lentoasema (FIE00142241) is a weather station in Finland at 60.25 latitude and 25.05 longitude, 15 m (49 ft) above sea level.
- The station reports from 1959 to 2026, 68 years of record.
- 1,464 records set at Helsinki-Malmin Lentoasema still stand.
- Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
- Helsinki-Malmin Lentoasema set a daily record high maximum temperature of 15.7 C (60.3 F) on 15 April 2026.
About the Station
- Location: Finland, 60.25 latitude, 25.05 longitude.
- Elevation: 15 m (49 ft).
- Period of record: 1959 to 2026, 68 years.
- Eligible elements: tmax, tmin, prcp.
Daily Record Envelope and 2026
6 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 8.3 C (46.9 F) | -35.3 C (-31.5 F) | 0.4 C (32.7 F) | -26.0 C (-14.8 F) |
| Feb | 10.0 C (50.0 F) | -33.2 C (-27.8 F) | 3.8 C (38.8 F) | -25.8 C (-14.4 F) |
| Mar | 14.5 C (58.1 F) | -27.7 C (-17.9 F) | 11.1 C (52.0 F) | -6.5 C (20.3 F) |
| Apr | 22.7 C (72.9 F) | -17.5 C (0.5 F) | 16.0 C (60.8 F) | -5.7 C (21.7 F) |
| May | 28.3 C (82.9 F) | -6.3 C (20.7 F) | 23.8 C (74.8 F) | -1.7 C (28.9 F) |
| Jun | 31.5 C (88.7 F) | -0.6 C (30.9 F) | 27.1 C (80.8 F) | 3.8 C (38.8 F) |
| Jul | 33.2 C (91.8 F) | 4.2 C (39.6 F) | 28.6 C (83.5 F) | 8.9 C (48.0 F) |
| Aug | 31.2 C (88.2 F) | -0.9 C (30.4 F) | 24.4 C (75.9 F) | 6.8 C (44.2 F) |
| Sep | 26.8 C (80.2 F) | -8.0 C (17.6 F) | n/a | n/a |
| Oct | 19.8 C (67.6 F) | -15.3 C (4.5 F) | n/a | n/a |
| Nov | 14.1 C (57.4 F) | -21.7 C (-7.1 F) | n/a | n/a |
| Dec | 8.5 C (47.3 F) | -33.5 C (-28.3 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1959 | 25 |
| 1960 | 13 |
| 1961 | 25 |
| 1962 | 35 |
| 1963 | 34 |
| 1964 | 13 |
| 1965 | 46 |
| 1966 | 43 |
| 1967 | 31 |
| 1968 | 35 |
| 1969 | 24 |
| 1970 | 17 |
| 1971 | 16 |
| 1972 | 28 |
| 1973 | 43 |
| 1974 | 12 |
| 1975 | 26 |
| 1976 | 23 |
| 1977 | 37 |
| 1978 | 38 |
| 1979 | 23 |
| 1980 | 22 |
| 1981 | 22 |
| 1982 | 15 |
| 1983 | 15 |
| 1984 | 15 |
| 1985 | 29 |
| 1986 | 21 |
| 1987 | 39 |
| 1988 | 29 |
| 1989 | 30 |
| 1990 | 34 |
| 1991 | 15 |
| 1992 | 26 |
| 1998 | 7 |
| 1999 | 18 |
| 2000 | 35 |
| 2001 | 19 |
| 2002 | 42 |
| 2003 | 29 |
| 2004 | 12 |
| 2005 | 14 |
| 2006 | 3 |
| 2017 | 11 |
| 2018 | 44 |
| 2019 | 37 |
| 2020 | 69 |
| 2021 | 36 |
| 2022 | 38 |
| 2023 | 32 |
| 2024 | 53 |
| 2025 | 55 |
| 2026 | 11 |
All-Time Record Progression
2 new records| Date | Kind | Detail |
|---|---|---|
| 2018-07-29 | Record high minimum temperature | Record high minimum temperature 22.5 C (72.5 F) |
| 2019-07-28 | Record high maximum temperature | Record high maximum temperature 33.2 C (91.8 F) |
Wettest Day of Each Month
Jul: 70.5 mm (2.8 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 20.8 mm (0.8 in) | 13 January 1983 |
| Feb | 18.4 mm (0.7 in) | 13 February 1971 |
| Mar | 16.3 mm (0.6 in) | 21 March 1974 |
| Apr | 34.0 mm (1.3 in) | 11 April 1982 |
| May | 28.2 mm (1.1 in) | 21 May 1972 |
| Jun | 55.4 mm (2.2 in) | 15 June 1961 |
| Jul | 70.5 mm (2.8 in) | 25 July 1960 |
| Aug | 54.7 mm (2.2 in) | 30 August 1960 |
| Sep | 56.2 mm (2.2 in) | 12 September 1962 |
| Oct | 44.8 mm (1.8 in) | 14 October 1992 |
| Nov | 38.0 mm (1.5 in) | 30 November 1961 |
| Dec | 28.7 mm (1.1 in) | 5 December 1967 |
Period of Record Coverage
1959 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1959 | 365 | 100% | Yes |
| 1960 | 366 | 100% | Yes |
| 1961 | 365 | 100% | Yes |
| 1962 | 365 | 100% | Yes |
| 1963 | 365 | 100% | Yes |
| 1964 | 366 | 100% | Yes |
| 1965 | 365 | 100% | Yes |
| 1966 | 365 | 100% | Yes |
| 1967 | 365 | 100% | Yes |
| 1968 | 366 | 100% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 365 | 100% | Yes |
| 1972 | 366 | 100% | Yes |
| 1973 | 365 | 100% | Yes |
| 1974 | 365 | 100% | Yes |
| 1975 | 365 | 100% | Yes |
| 1976 | 366 | 100% | Yes |
| 1977 | 365 | 100% | Yes |
| 1978 | 364 | 100% | Yes |
| 1979 | 365 | 100% | Yes |
| 1980 | 366 | 100% | Yes |
| 1981 | 365 | 100% | Yes |
| 1982 | 365 | 100% | Yes |
| 1983 | 365 | 100% | Yes |
| 1984 | 366 | 100% | Yes |
| 1985 | 364 | 100% | Yes |
| 1986 | 365 | 100% | Yes |
| 1987 | 365 | 100% | Yes |
| 1988 | 366 | 100% | Yes |
| 1989 | 365 | 100% | Yes |
| 1990 | 365 | 100% | Yes |
| 1991 | 365 | 100% | Yes |
| 1992 | 366 | 100% | Yes |
| 1998 | 63 | 17% | No |
| 1999 | 244 | 67% | No |
| 2000 | 355 | 97% | Yes |
| 2001 | 360 | 99% | Yes |
| 2002 | 353 | 97% | Yes |
| 2003 | 327 | 90% | No |
| 2004 | 353 | 96% | Yes |
| 2005 | 348 | 95% | Yes |
| 2006 | 111 | 30% | No |
| 2017 | 298 | 82% | No |
| 2018 | 365 | 100% | Yes |
| 2019 | 365 | 100% | Yes |
| 2020 | 366 | 100% | Yes |
| 2021 | 365 | 100% | Yes |
| 2022 | 365 | 100% | Yes |
| 2023 | 365 | 100% | Yes |
| 2024 | 366 | 100% | Yes |
| 2025 | 335 | 92% | Yes |
| 2026 | 243 | 67% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 15 April 2026 | Helsinki-Malmin Lentoasema, FI | daily high max | 15.7 C (60.3 F) | 0.6 C (1.1 F) | 21 years | 13 of 100 (Routine) |
| 6 April 2026 | Helsinki-Malmin Lentoasema, FI | daily high min | 2.1 C (35.8 F) | 0.1 C (0.2 F) | 52 years | 21 of 100 (Routine) |
| 3 April 2026 | Helsinki-Malmin Lentoasema, FI | daily high min | 3.6 C (38.5 F) | 0.1 C (0.2 F) | 35 years | 16 of 100 (Routine) |
| 31 March 2026 | Helsinki-Malmin Lentoasema, FI | daily high max | 11.1 C (52.0 F) | 0.6 C (1.1 F) | 0 years | 7 of 100 (Routine) |
| 26 March 2026 | Helsinki-Malmin Lentoasema, FI | daily high min | 3.9 C (39.0 F) | 0.9 C (1.6 F) | 44 years | 20 of 100 (Routine) |
| 25 March 2026 | Helsinki-Malmin Lentoasema, FI | daily high max | 10.8 C (51.4 F) | 1.3 C (2.3 F) | 20 years | 15 of 100 (Routine) |
| 25 March 2026 | Helsinki-Malmin Lentoasema, FI | daily high min | 3.6 C (38.5 F) | 0.5 C (0.9 F) | 5 years | 7 of 100 (Routine) |
| 15 March 2026 | Helsinki-Malmin Lentoasema, FI | monthly high min (Tie) | 4.8 C (40.6 F) | tie | 0 years | 4 of 100 (Routine) |
| 14 March 2026 | Helsinki-Malmin Lentoasema, FI | monthly high min | 4.8 C (40.6 F) | 0.7 C (1.3 F) | 0 years | 17 of 100 (Routine) |
| 7 March 2026 | Helsinki-Malmin Lentoasema, FI | daily high max | 8.2 C (46.8 F) | 1.3 C (2.3 F) | 59 years | 26 of 100 (Routine) |
| 5 March 2026 | Helsinki-Malmin Lentoasema, FI | daily high max | 7.1 C (44.8 F) | 0.3 C (0.5 F) | 0 years | 6 of 100 (Routine) |
| 4 March 2026 | Helsinki-Malmin Lentoasema, FI | daily high max (Tie) | 5.5 C (41.9 F) | tie | 0 years | 1 of 100 (Routine) |
| 25 December 2025 | Helsinki-Malmin Lentoasema, FI | daily high max | 6.7 C (44.1 F) | 1.3 C (2.3 F) | 51 years | 23 of 100 (Routine) |
| 21 December 2025 | Helsinki-Malmin Lentoasema, FI | daily high max | 6.6 C (43.9 F) | 2.1 C (3.8 F) | 51 years | 25 of 100 (Routine) |
| 20 December 2025 | Helsinki-Malmin Lentoasema, FI | daily high min | 5.9 C (42.6 F) | 2.0 C (3.6 F) | 4 years | 9 of 100 (Routine) |
| 20 December 2025 | Helsinki-Malmin Lentoasema, FI | daily high max | 7.5 C (45.5 F) | 0.7 C (1.3 F) | 4 years | 8 of 100 (Routine) |
| 19 December 2025 | Helsinki-Malmin Lentoasema, FI | daily high min | 4.9 C (40.8 F) | 2.5 C (4.5 F) | 36 years | 19 of 100 (Routine) |
| 19 December 2025 | Helsinki-Malmin Lentoasema, FI | daily high max | 6.5 C (43.7 F) | 0.3 C (0.5 F) | 4 years | 7 of 100 (Routine) |
| 18 December 2025 | Helsinki-Malmin Lentoasema, FI | daily high max | 7.3 C (45.1 F) | 0.3 C (0.5 F) | 6 years | 7 of 100 (Routine) |
| 17 December 2025 | Helsinki-Malmin Lentoasema, FI | daily high min | 5.4 C (41.7 F) | 2.5 C (4.5 F) | 32 years | 18 of 100 (Routine) |
Climate Trend
46 complete years, 1959 to 2024| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1959 | 5.3 C | +0.29 C |
| 1960 | 4.1 C | -0.87 C |
| 1961 | 5.8 C | +0.82 C |
| 1962 | 3.7 C | -1.30 C |
| 1963 | 3.6 C | -1.38 C |
| 1964 | 4.4 C | -0.53 C |
| 1965 | 3.9 C | -1.03 C |
| 1966 | 3.2 C | -1.77 C |
| 1967 | 4.5 C | -0.43 C |
| 1968 | 4.0 C | -1.01 C |
| 1969 | 3.3 C | -1.63 C |
| 1970 | 3.6 C | -1.34 C |
| 1971 | 4.6 C | -0.35 C |
| 1972 | 5.5 C | +0.51 C |
| 1973 | 4.7 C | -0.23 C |
| 1974 | 6.0 C | +1.08 C |
| 1975 | 6.3 C | +1.34 C |
| 1976 | 3.3 C | -1.68 C |
| 1977 | 4.0 C | -0.98 C |
| 1978 | 3.1 C | -1.84 C |
| 1979 | 4.2 C | -0.79 C |
| 1980 | 3.9 C | -1.11 C |
| 1981 | 4.4 C | -0.58 C |
| 1982 | 4.9 C | -0.03 C |
| 1983 | 5.5 C | +0.51 C |
| 1984 | 5.4 C | +0.41 C |
| 1985 | 2.7 C | -2.28 C |
| 1986 | 4.2 C | -0.78 C |
| 1987 | 2.7 C | -2.23 C |
| 1988 | 5.2 C | +0.22 C |
| 1989 | 6.6 C | +1.67 C |
| 1990 | 6.2 C | +1.21 C |
| 1991 | 5.8 C | +0.83 C |
| 1992 | 6.0 C | +1.06 C |
| 2000 | 6.6 C | +1.65 C |
| 2001 | 5.2 C | +0.24 C |
| 2002 | 5.2 C | +0.25 C |
| 2004 | 5.3 C | +0.32 C |
| 2005 | 5.7 C | +0.75 C |
| 2018 | 6.2 C | +1.27 C |
| 2019 | 6.5 C | +1.55 C |
| 2020 | 7.8 C | +2.84 C |
| 2021 | 5.8 C | +0.80 C |
| 2022 | 6.3 C | +1.35 C |
| 2023 | 6.1 C | +1.13 C |
| 2024 | 7.0 C | +2.02 C |
The annual mean temperature here has risen by 0.4 C (0.3 to 0.6) per decade over 1959 to 2024. In Fahrenheit: 0.7 F (0.5 to 1.0) per decade. The slope is a straight line fitted to 46 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.4 C (0.3 to 0.6) per decade | 0.7 F (0.5 to 1.0) per decade | 1959 to 2024 | 46 | Rise |
| Mean daily maximum | 0.4 C (0.3 to 0.6) per decade | 0.7 F (0.5 to 1.0) per decade | 1959 to 2024 | 46 | Rise |
| Mean daily minimum | 0.4 C (0.2 to 0.6) per decade | 0.7 F (0.4 to 1.0) per decade | 1959 to 2024 | 46 | Rise |
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
1959 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 33.2 C (91.8 F) | 2019 | 28.2 C (82.8 F) | 53 |
| Coldest night (TNn) | -35.3 C (-31.5 F) | 1987 | -26.0 C (-14.8 F) | 53 |
| Wettest day (Rx1day) | 70.5 mm (2.8 in) | 1960 | 33.1 mm (1.3 in) | 34 |
| Wettest five days (Rx5day) | 93.0 mm (3.7 in) | 1986 | 61.8 mm (2.4 in) | 34 |
| Longest dry spell (CDD) | 38 days | 1972 | 22 days | 34 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1959 | 28.2 C (82.8 F) |
| 1960 | 28.3 C (82.9 F) |
| 1961 | 27.1 C (80.8 F) |
| 1962 | 22.9 C (73.2 F) |
| 1963 | 27.9 C (82.2 F) |
| 1964 | 28.7 C (83.7 F) |
| 1965 | 27.6 C (81.7 F) |
| 1966 | 27.9 C (82.2 F) |
| 1967 | 27.5 C (81.5 F) |
| 1968 | 27.7 C (81.9 F) |
| 1969 | 27.4 C (81.3 F) |
| 1970 | 27.7 C (81.9 F) |
| 1971 | 28.0 C (82.4 F) |
| 1972 | 31.5 C (88.7 F) |
| 1973 | 31.2 C (88.2 F) |
| 1974 | 25.2 C (77.4 F) |
| 1975 | 31.2 C (88.2 F) |
| 1976 | 26.3 C (79.3 F) |
| 1977 | 29.0 C (84.2 F) |
| 1978 | 27.2 C (81.0 F) |
| 1979 | 27.5 C (81.5 F) |
| 1980 | 28.9 C (84.0 F) |
| 1981 | 26.4 C (79.5 F) |
| 1982 | 27.6 C (81.7 F) |
| 1983 | 31.2 C (88.2 F) |
| 1984 | 26.5 C (79.7 F) |
| 1985 | 27.1 C (80.8 F) |
| 1986 | 28.8 C (83.8 F) |
| 1987 | 26.0 C (78.8 F) |
| 1988 | 29.6 C (85.3 F) |
| 1989 | 28.4 C (83.1 F) |
| 1990 | 25.2 C (77.4 F) |
| 1991 | 29.2 C (84.6 F) |
| 1992 | 30.3 C (86.5 F) |
| 1998 | 6.9 C (44.4 F) |
| 1999 | 28.5 C (83.3 F) |
| 2000 | 28.2 C (82.8 F) |
| 2001 | 27.9 C (82.2 F) |
| 2002 | 28.5 C (83.3 F) |
| 2003 | 30.1 C (86.2 F) |
| 2004 | 28.9 C (84.0 F) |
| 2005 | 29.4 C (84.9 F) |
| 2006 | 10.5 C (50.9 F) |
| 2017 | 25.2 C (77.4 F) |
| 2018 | 30.7 C (87.3 F) |
| 2019 | 33.2 C (91.8 F) |
| 2020 | 29.8 C (85.6 F) |
| 2021 | 31.8 C (89.2 F) |
| 2022 | 31.1 C (88.0 F) |
| 2023 | 29.1 C (84.4 F) |
| 2024 | 28.1 C (82.6 F) |
| 2025 | 29.7 C (85.5 F) |
| 2026 | 28.6 C (83.5 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1959 | -27.3 C (-17.1 F) |
| 1960 | -27.5 C (-17.5 F) |
| 1961 | -27.6 C (-17.7 F) |
| 1962 | -25.7 C (-14.3 F) |
| 1963 | -30.2 C (-22.4 F) |
| 1964 | -28.0 C (-18.4 F) |
| 1965 | -28.8 C (-19.8 F) |
| 1966 | -33.1 C (-27.6 F) |
| 1967 | -33.8 C (-28.8 F) |
| 1968 | -32.7 C (-26.9 F) |
| 1969 | -28.6 C (-19.5 F) |
| 1970 | -31.0 C (-23.8 F) |
| 1971 | -23.6 C (-10.5 F) |
| 1972 | -23.9 C (-11.0 F) |
| 1973 | -28.3 C (-18.9 F) |
| 1974 | -15.5 C (4.1 F) |
| 1975 | -23.8 C (-10.8 F) |
| 1976 | -26.7 C (-16.1 F) |
| 1977 | -29.3 C (-20.7 F) |
| 1978 | -33.5 C (-28.3 F) |
| 1979 | -33.2 C (-27.8 F) |
| 1980 | -30.1 C (-22.2 F) |
| 1981 | -25.6 C (-14.1 F) |
| 1982 | -32.1 C (-25.8 F) |
| 1983 | -21.7 C (-7.1 F) |
| 1984 | -21.4 C (-6.5 F) |
| 1985 | -30.8 C (-23.4 F) |
| 1986 | -28.0 C (-18.4 F) |
| 1987 | -35.3 C (-31.5 F) |
| 1988 | -21.8 C (-7.2 F) |
| 1989 | -25.2 C (-13.4 F) |
| 1990 | -19.6 C (-3.3 F) |
| 1991 | -26.4 C (-15.5 F) |
| 1992 | -21.6 C (-6.9 F) |
| 1998 | -17.5 C (0.5 F) |
| 1999 | -29.6 C (-21.3 F) |
| 2000 | -21.6 C (-6.9 F) |
| 2001 | -25.4 C (-13.7 F) |
| 2002 | -25.6 C (-14.1 F) |
| 2003 | -31.0 C (-23.8 F) |
| 2004 | -22.8 C (-9.0 F) |
| 2005 | -22.3 C (-8.1 F) |
| 2006 | -26.4 C (-15.5 F) |
| 2017 | -8.3 C (17.1 F) |
| 2018 | -23.6 C (-10.5 F) |
| 2019 | -25.7 C (-14.3 F) |
| 2020 | -13.1 C (8.4 F) |
| 2021 | -25.0 C (-13.0 F) |
| 2022 | -22.9 C (-9.2 F) |
| 2023 | -19.6 C (-3.3 F) |
| 2024 | -27.6 C (-17.7 F) |
| 2025 | -18.8 C (-1.8 F) |
| 2026 | -26.0 C (-14.8 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1959 | 34.9 mm (1.4 in) |
| 1960 | 70.5 mm (2.8 in) |
| 1961 | 55.4 mm (2.2 in) |
| 1962 | 56.2 mm (2.2 in) |
| 1963 | 40.8 mm (1.6 in) |
| 1964 | 26.8 mm (1.1 in) |
| 1965 | 26.5 mm (1.0 in) |
| 1966 | 27.4 mm (1.1 in) |
| 1967 | 28.7 mm (1.1 in) |
| 1968 | 21.3 mm (0.8 in) |
| 1969 | 22.6 mm (0.9 in) |
| 1970 | 37.5 mm (1.5 in) |
| 1971 | 20.6 mm (0.8 in) |
| 1972 | 42.2 mm (1.7 in) |
| 1973 | 28.4 mm (1.1 in) |
| 1974 | 27.7 mm (1.1 in) |
| 1975 | 17.1 mm (0.7 in) |
| 1976 | 37.5 mm (1.5 in) |
| 1977 | 22.7 mm (0.9 in) |
| 1978 | 41.2 mm (1.6 in) |
| 1979 | 32.1 mm (1.3 in) |
| 1980 | 27.9 mm (1.1 in) |
| 1981 | 30.2 mm (1.2 in) |
| 1982 | 34.0 mm (1.3 in) |
| 1983 | 35.3 mm (1.4 in) |
| 1984 | 36.6 mm (1.4 in) |
| 1985 | 28.5 mm (1.1 in) |
| 1986 | 41.8 mm (1.6 in) |
| 1987 | 36.6 mm (1.4 in) |
| 1988 | 30.8 mm (1.2 in) |
| 1989 | 28.0 mm (1.1 in) |
| 1990 | 39.2 mm (1.5 in) |
| 1991 | 37.7 mm (1.5 in) |
| 1992 | 44.8 mm (1.8 in) |
| 1998 | n/a |
| 1999 | n/a |
| 2000 | n/a |
| 2001 | n/a |
| 2002 | n/a |
| 2003 | n/a |
| 2004 | n/a |
| 2005 | n/a |
| 2006 | n/a |
| 2017 | n/a |
| 2018 | n/a |
| 2019 | n/a |
| 2020 | n/a |
| 2021 | n/a |
| 2022 | n/a |
| 2023 | n/a |
| 2024 | n/a |
| 2025 | n/a |
| 2026 | n/a |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1959 | 80.2 mm (3.2 in) |
| 1960 | 79.5 mm (3.1 in) |
| 1961 | 66.5 mm (2.6 in) |
| 1962 | 70.3 mm (2.8 in) |
| 1963 | 77.7 mm (3.1 in) |
| 1964 | 43.4 mm (1.7 in) |
| 1965 | 61.4 mm (2.4 in) |
| 1966 | 40.3 mm (1.6 in) |
| 1967 | 67.3 mm (2.6 in) |
| 1968 | 54.6 mm (2.1 in) |
| 1969 | 41.2 mm (1.6 in) |
| 1970 | 80.8 mm (3.2 in) |
| 1971 | 50.2 mm (2.0 in) |
| 1972 | 70.3 mm (2.8 in) |
| 1973 | 42.4 mm (1.7 in) |
| 1974 | 77.1 mm (3.0 in) |
| 1975 | 27.1 mm (1.1 in) |
| 1976 | 56.8 mm (2.2 in) |
| 1977 | 44.7 mm (1.8 in) |
| 1978 | 64.0 mm (2.5 in) |
| 1979 | 58.6 mm (2.3 in) |
| 1980 | 50.2 mm (2.0 in) |
| 1981 | 66.8 mm (2.6 in) |
| 1982 | 70.2 mm (2.8 in) |
| 1983 | 80.5 mm (3.2 in) |
| 1984 | 65.8 mm (2.6 in) |
| 1985 | 49.9 mm (2.0 in) |
| 1986 | 93.0 mm (3.7 in) |
| 1987 | 50.7 mm (2.0 in) |
| 1988 | 62.2 mm (2.4 in) |
| 1989 | 46.8 mm (1.8 in) |
| 1990 | 59.1 mm (2.3 in) |
| 1991 | 54.8 mm (2.2 in) |
| 1992 | 86.8 mm (3.4 in) |
| 1998 | n/a |
| 1999 | n/a |
| 2000 | n/a |
| 2001 | n/a |
| 2002 | n/a |
| 2003 | n/a |
| 2004 | n/a |
| 2005 | n/a |
| 2006 | n/a |
| 2017 | n/a |
| 2018 | n/a |
| 2019 | n/a |
| 2020 | n/a |
| 2021 | n/a |
| 2022 | n/a |
| 2023 | n/a |
| 2024 | n/a |
| 2025 | n/a |
| 2026 | n/a |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1959 | 23 days |
| 1960 | 32 days |
| 1961 | 23 days |
| 1962 | 14 days |
| 1963 | 22 days |
| 1964 | 37 days |
| 1965 | 17 days |
| 1966 | 19 days |
| 1967 | 16 days |
| 1968 | 20 days |
| 1969 | 31 days |
| 1970 | 19 days |
| 1971 | 18 days |
| 1972 | 38 days |
| 1973 | 23 days |
| 1974 | 25 days |
| 1975 | 26 days |
| 1976 | 26 days |
| 1977 | 14 days |
| 1978 | 23 days |
| 1979 | 19 days |
| 1980 | 24 days |
| 1981 | 19 days |
| 1982 | 20 days |
| 1983 | 34 days |
| 1984 | 22 days |
| 1985 | 13 days |
| 1986 | 24 days |
| 1987 | 27 days |
| 1988 | 17 days |
| 1989 | 17 days |
| 1990 | 21 days |
| 1991 | 20 days |
| 1992 | 32 days |
| 1998 | n/a |
| 1999 | n/a |
| 2000 | n/a |
| 2001 | n/a |
| 2002 | n/a |
| 2003 | n/a |
| 2004 | n/a |
| 2005 | n/a |
| 2006 | n/a |
| 2017 | n/a |
| 2018 | n/a |
| 2019 | n/a |
| 2020 | n/a |
| 2021 | n/a |
| 2022 | n/a |
| 2023 | n/a |
| 2024 | n/a |
| 2025 | n/a |
| 2026 | n/a |
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.
Frost Dates and Growing Season
46 years with a frostAcross 46 years with a frost, the median last spring frost at Helsinki-Malmin Lentoasema falls on 17 May and the median first autumn frost on 20 September, which leaves a median of 126 days between them.
Fitted over all years, the growing season changes by +3.1 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1975 to 2024) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 17 May | n/a | 13 May | n/a | -1.8 days per decade |
| First autumn frost | 20 September | n/a | 20 September | n/a | +1.2 days per decade |
| Growing days | 126 days | n/a | 128 days | n/a | +3.1 days per decade |
A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.
Rainfall Return Levels
34 years, 1959 to 1992A day with at least 32.3 mm (1.3 in) of rain is expected about once in 2 years. A day with at least 70.7 mm (2.8 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 32.3 mm (1.3 in) | |
| 5 years | 41.9 mm (1.6 in) | |
| 10 years | 48.5 mm (1.9 in) | |
| 25 years | 57.2 mm (2.3 in) | |
| 50 years | 63.9 mm (2.5 in) | Longer than the 34 years of record |
| 100 years | 70.7 mm (2.8 in) | Longer than the 34 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, 34 years of values from 1959 to 1992.
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: 70.5 mm (2.8 in) in 1960; 56.2 mm (2.2 in) in 1962; 55.4 mm (2.2 in) in 1961.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of Helsinki-Malmin Lentoasema, at 2000. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 2000 ran 0.1 C (0.2 F) lower than in the years before (possible change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 2000 | -0.1 | -0.2 | possible | 5 |
Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.
Download the Data
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 (2026-10-12).