Helsinki weather by month
Helsinki has mild summers, cold winters and moderate rain. The most pleasant months are June to August.
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Month by month
Average daytime high, night low, rain or snow, how the air feels and how strong the sun is, 1991–2020. Best months are highlighted.
| Month | High | Low | Rain | Air | Sun |
|---|---|---|---|---|---|
| January | 30°F -1°C | 22°F -6°C | 1.8 in 45 mm | Dry | Weak sun |
| February | 29°F -1°C | 20°F -7°C | 1.5 in 37 mm | Dry | Weak sun |
| March | 35°F 2°C | 24°F -4°C | 1.4 in 36 mm | Dry | Moderate sun |
| April | 46°F 8°C | 33°F 1°C | 1.3 in 34 mm | Dry | Moderate sun |
| May | 58°F 14°C | 43°F 6°C | 1.4 in 35 mm | Dry | Sunny |
| June | 66°F 19°C | 52°F 11°C | 2.4 in 61 mm | Comfortable | Strong sun |
| July | 71°F 21°C | 57°F 14°C | 2.4 in 62 mm | Comfortable | Strong sun |
| August | 68°F 20°C | 55°F 13°C | 2.7 in 68 mm | Comfortable | Sunny |
| September | 59°F 15°C | 48°F 9°C | 2.2 in 55 mm | Comfortable | Moderate sun |
| October | 48°F 9°C | 39°F 4°C | 3.0 in 75 mm | Dry | Weak sun |
| November | 40°F 4°C | 32°F 0°C | 2.6 in 65 mm | Dry | Weak sun |
| December | 34°F 1°C | 26°F -3°C | 2.2 in 57 mm | Dry | Weak sun |
Cities with a climate like Helsinki
Whole-year match out of 100, one city per country, seasons lined up across the equator.