Helsinki, Uusimaa, Finland weather records
Record high and low temperatures for Helsinki, Uusimaa, Finland, by month, by season, and all-time, with the dates they occurred, across 1981–2026 of daily climate history. Its hottest day on record reached 28°C on 2019-07-28; its coldest fell to -29°C on 1987-01-11.
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 | 7°C2007-01-10
-27°C1987-01-10
|
4°C2020-01-16
-29°C1987-01-11
|
| February | 6°C1990-02-21
-20°C1985-02-10
|
4°C2020-02-17
-27°C2011-02-18
|
| March | 9°C2007-03-26
-14°C1987-03-01
|
4°C1990-03-22
-19°C1987-03-05
|
| April | 17°C1998-04-29
-6°C2003-04-01
|
8°C1989-04-28
-9°C2003-04-02
|
| May | 22°C2024-05-30
3°C1981-05-01
|
17°C2024-05-31
-2°C1999-05-03
|
| June | 26°C2022-06-27
7°C1982-06-09
|
20°C2021-06-22
4°C1982-06-10
|
| July | 28°C2019-07-28
13°C1982-07-01
|
23°C2021-07-15
9°C1992-07-05
|
| August | 26°C2010-08-08
11°C1981-08-31
|
22°C2018-08-02
8°C1984-08-26
|
| September | 23°C2024-09-05
6°C1986-09-27
|
18°C2024-09-05
2°C1986-09-28
|
| October | 16°C1999-10-03
-3°C1992-10-30
|
13°C2020-10-05
-5°C1992-10-31
|
| November | 12°C2020-11-03
-9°C2010-11-29
|
10°C2025-11-05
-10°C1990-11-22
|
| December | 8°C2011-12-26
-18°C2002-12-31
|
7°C2015-12-06
-22°C2002-12-31
|
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) | 8°C2011-12-26
-27°C1987-01-10
|
7°C2015-12-06
-29°C1987-01-11
|
| Spring (Mar–May) | 22°C2024-05-30
-14°C1987-03-01
|
17°C2024-05-31
-19°C1987-03-05
|
| Summer (Jun–Aug) | 28°C2019-07-28
7°C1982-06-09
|
23°C2021-07-15
4°C1982-06-10
|
| Autumn (Sep–Nov) | 23°C2024-09-05
-9°C2010-11-29
|
18°C2024-09-05
-10°C1990-11-22
|
All-time records
The most extreme value Helsinki has recorded for each metric across its entire history.
High
Low
Feels-like
Humidity
Wind
Precip
For rainfall, the “driest” figure is the longest run of consecutive days without measurable rain, dated to when that dry spell began.