Helsinki Climate by Month
Helsinki, Uusimaa, Finland
Mild summers and freezing winters, with rain spread through the year.
Mild summers and freezing winters, with rain spread through the year: that's Helsinki's climate in short. Afternoon highs range from 29°F (-1°C) in February to 71°F (21°C) in July, and February nights average 20°F (-7°C). It gets 25 in (630 mm) of rain a year, spread across the months. The air is humid, averaging 78% relative humidity.
- Warmest month
- 71°F(21°C)
- Average high, July
- Coldest nights
- 20°F(-7°C)
- Average low, February
- Rain per year
- 25 in(630 mm)
- No clear rainy season
- Humidity
- 78%
- Sunniest: June
Best and worst months in Helsinki
Best for weatherJuly is the best time for weather in Helsinki: highs near 71°F (21°C) and about 2.4 in (62 mm) of rain a month.
Least pleasantJanuary and February are the least pleasant; February is the coldest, with highs of only 29°F (-1°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in July.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Helsinki weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 30°F(-1°C) | 22°F(-6°C) | 1.8 in(45 mm) | 84% | 0.3 |
| FebFebruary | 29°F(-1°C) | 20°F(-7°C) | 1.5 in(37 mm) | 89% | 0.9 |
| MarMarch | 35°F(2°C) | 24°F(-4°C) | 1.4 in(36 mm) | 72% | 2.2 |
| AprApril | 46°F(8°C) | 33°F(1°C) | 1.3 in(34 mm) | 73% | 3.6 |
| MayMay | 58°F(14°C) | 43°F(6°C) | 1.4 in(35 mm) | 64% | 5.3 |
| JunJune | 66°F(19°C) | 52°F(11°C) | 2.4 in(61 mm) | 71% | 5.7 |
| JulJulyBest | 71°F(21°C) | 57°F(14°C) | 2.4 in(62 mm) | 74% | 5.5 |
| AugAugust | 68°F(20°C) | 55°F(13°C) | 2.7 in(68 mm) | 75% | 4.3 |
| SepSeptember | 59°F(15°C) | 48°F(9°C) | 2.2 in(55 mm) | 79% | 2.5 |
| OctOctober | 48°F(9°C) | 39°F(4°C) | 3.0 in(75 mm) | 83% | 1.0 |
| NovNovember | 40°F(4°C) | 32°F(0°C) | 2.6 in(65 mm) | 84% | 0.3 |
| DecDecember | 34°F(1°C) | 26°F(-3°C) | 2.2 in(57 mm) | 89% | 0.1 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
Places with a similar climate
All 20 places like Helsinki →- 🇫🇮KotkaKymenlaakso, Finland · Pop. 50k97%matchSame summer highsSame winter lowsHelsinki vs Kotka →
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