Temperature
Cold by day, freezing at night.
Not the best time: Cold weather and some snow or mixed precipitation are the main limitations.
Cold by day, freezing at night.
Some snow or mixed precipitation is possible this month.
Wintry precipitation and cloud limit sunshine.
Humidity is rarely noticeable in the cool air.
In January, afternoons feel about 16° and nights feel near 14°.
Overcast skies this month.
Breezy January days can feel brisker in open spots.
January late afternoons are around 25°F, and early evening stays near 25°F.
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% |
|---|---|---|---|---|---|---|
| Jan | 28 | 20 | 2.0 | 12 | 1.3 | 90 |
| Feb | 28 | 19 | 1.7 | 10 | 2.6 | 88 |
| Mar | 35 | 23 | 1.4 | 8 | 4.2 | 81 |
| Apr | 47 | 33 | 1.5 | 8 | 6.0 | 73 |
| May | 58 | 42 | 1.8 | 9 | 8.9 | 68 |
| Jun | 66 | 51 | 2.9 | 11 | 9.9 | 70 |
| Jul | 71 | 57 | 3.3 | 13 | 8.9 | 75 |
| Aug | 69 | 55 | 3.1 | 13 | 7.2 | 79 |
| Sep | 60 | 47 | 2.3 | 10 | 4.5 | 84 |
| Oct | 48 | 39 | 2.4 | 12 | 2.9 | 87 |
| Nov | 39 | 33 | 2.3 | 12 | 1.2 | 91 |
| Dec | 33 | 26 | 2.3 | 12 | 0.9 | 90 |
Similar climates
Want a side-by-side climate view? Compare Helsinki with Warsaw.
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jun 1, 2026
Data & methodology