Helsinki weather records
Record high and low temperatures for Helsinki, by month, by season, and all-time, with the dates they occurred, across 1980–2026 of daily climate history. Its hottest day on record reached 32°C on 2019-07-28; its coldest fell to -36°C on 1987-01-09.
Records by month
The warmest (▲) and coldest (▼) both the daytime high and the overnight low have ever been in each calendar month, so each column shows its record high and its record low. Tap a month for its full averages and typical range.
| Month | Daytime high | Overnight low |
|---|---|---|
| January | 8°C2020-01-15
-33°C1987-01-09
|
5°C2020-01-15
-36°C1987-01-09
|
| February | 8°C1990-02-23
-21°C2001-02-04
|
4°C2020-02-18
-29°C2007-02-07
|
| March | 15°C2007-03-27
-15°C1987-03-01
|
4°C1990-03-19
-24°C1981-03-07
|
| April | 21°C1986-04-28
-3°C1998-04-02
|
10°C1989-04-27
-10°C2012-04-01
|
| May | 27°C1993-05-20
4°C1981-05-01
|
15°C2024-05-30
-4°C1999-05-03
|
| June | 30°C2021-06-22
8°C1982-06-16
|
20°C2021-06-22
2°C2009-06-07
|
| July | 32°C2019-07-28
13°C1985-07-02
|
22°C2018-07-29
5°C2009-07-06
|
| August | 30°C2010-08-08
11°C1981-08-25
|
21°C2023-08-07
3°C2007-08-31
|
| September | 25°C2024-09-04
4°C1986-09-27
|
17°C2025-09-11
-4°C1986-09-28
|
| October | 17°C1984-10-03
-5°C1992-10-30
|
13°C1999-10-03
-13°C1992-10-31
|
| November | 13°C2022-11-12
-14°C2010-11-29
|
10°C2025-11-05
-19°C1988-11-21
|
| December | 10°C2015-12-20
-22°C2002-12-31
|
7°C2006-12-06
-27°C1995-12-25
|
Records by season
The warmest (▲) and coldest (▼) both the daytime high and the overnight low have reached in each meteorological season (Northern Hemisphere, each a three-month span).
| Season | Daytime high | Overnight low |
|---|---|---|
| Winter (Dec–Feb) | 10°C2015-12-20
-33°C1987-01-09
|
7°C2006-12-06
-36°C1987-01-09
|
| Spring (Mar–May) | 27°C1993-05-20
-15°C1987-03-01
|
15°C2024-05-30
-24°C1981-03-07
|
| Summer (Jun–Aug) | 32°C2019-07-28
8°C1982-06-16
|
22°C2018-07-29
2°C2009-06-07
|
| Autumn (Sep–Nov) | 25°C2024-09-04
-14°C2010-11-29
|
17°C2025-09-11
-19°C1988-11-21
|
All-time records
The most extreme value Helsinki has recorded for each metric across its entire history.
High
Low
Feels-like
Humidity
Wind
Gust
Precip
For rainfall, the “driest” figure is the longest run of consecutive days without measurable rain, dated to when that dry spell began.