Helsinki (Vantaa) weather by month & the best time to visit
Finland · city break · continental climate
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The best time to visit Helsinki (Vantaa) is July — its sunniest month (Sunshine Score 75/100), with August and June close behind. Helsinki (Vantaa) averages about 1,584 hours of sunshine a year. Daytime highs around 22°C / 72°F and roughly 71 mm of rain in July.
When is the best time to visit Helsinki (Vantaa)?
For sunshine, the best time to visit Helsinki (Vantaa) is July, then August and June. The dullest month is January (0/100, 56 mm of rain). The full month-by-month picture is in the table below.
How sunny is Helsinki (Vantaa)?
Helsinki (Vantaa) isn't a sunny place by world standards: about 1,584 hours of sunshine a year. 75 Sunshine Score points separate July (75) from January (0), so the month you pick matters. It ranks #13 of 20 destinations in Finland for annual sunshine, below the national median of 1,638 hours. The year's 732 mm of rain spreads fairly evenly across the months, with no pronounced dry season.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 0 | -4° / 25°F | -8° / 18°F | 56 mm | 0 | 0° / 32°F |
| February | 0 | -3° / 27°F | -9° / 16°F | 45 mm | 0 | 0° / 32°F |
| March | 0 | 1° / 34°F | -6° / 21°F | 43 mm | 1 | 1° / 34°F |
| April | 0 | 8° / 46°F | 0° / 32°F | 44 mm | 2 | 3° / 37°F |
| May | 45 | 15° / 59°F | 5° / 41°F | 53 mm | 3 | 11° / 52°F |
| June | 68 | 19° / 66°F | 10° / 50°F | 75 mm | 4 | 18° / 64°F |
| July | 75 | 22° / 72°F | 13° / 55°F | 71 mm | 4 | 19° / 66°F |
| August | 75 | 20° / 68°F | 12° / 54°F | 70 mm | 3 | 20° / 68°F |
| September | 45 | 15° / 59°F | 8° / 46°F | 61 mm | 2 | 18° / 64°F |
| October | 0 | 8° / 46°F | 3° / 37°F | 77 mm | 1 | 12° / 54°F |
| November | 0 | 3° / 37°F | -1° / 30°F | 70 mm | 0 | 6° / 43°F |
| December | 0 | -1° / 30°F | -5° / 23°F | 67 mm | 0 | 3° / 37°F |
Sea temperature in Helsinki (Vantaa) by month
The sea off Helsinki (Vantaa) is warmest in August at around 20°C / 68°F, and coolest in January at 0°C / 32°F. It never reaches comfortable swimming temperatures (21°C+). Month-by-month sea-surface temperatures are in the Sea column of the table above.
Nearest destinations
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Head-to-head
How Helsinki (Vantaa) compares month by month: Helsinki (Vantaa) vs St. Petersburg · Helsinki (Vantaa) vs Riga · Helsinki (Vantaa) vs Tallinn · all comparisons
Helsinki (Vantaa): questions and answers
What kind of destination is Helsinki (Vantaa)?
Helsinki (Vantaa) is a city break in Finland with a continental climate — the sea reaches 20°C at its warmest.
How many hours of sunshine does Helsinki (Vantaa) get a year?
Helsinki (Vantaa) gets about 1,584 hours of sunshine a year, at its best around July.
When is the best time to visit Helsinki (Vantaa)?
The sunniest time to visit Helsinki (Vantaa) is July, when the Sunshine Score peaks at 75/100 (with August and June close behind). Expect daytime highs around 22°C / 72°F.
What is the least sunny month in Helsinki (Vantaa)?
January is the least sunny month in Helsinki (Vantaa), scoring 0/100 with about 56 mm of rain.
What is the sea temperature in Helsinki (Vantaa)?
The sea in Helsinki (Vantaa) ranges from about 0°C (January) to 20°C (August). Month-by-month sea temperatures are on this page.
How strong is the sun in Helsinki (Vantaa)?
The typical midday UV index in Helsinki (Vantaa) peaks around 4 (moderate) in June, easing to about 0 (low) in January. Month-by-month midday UV values are in the UV column of the table on this page.
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