When to go
The Best Time to Visit Helsinki
Month-by-month climate data for Helsinki, Finland — daily highs and lows, rain days, and an honest verdict for every month of the year.
June–August, December. Endless summer evenings or proper snow-globe winters with Christmas markets — skip the brown shoulder seasons.
Warmest in Helsinki: Jul (21°C / 70°F) · Coolest: Jan (0°C / 32°F) · Wettest: Jan (~16 rain days)
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)
Helsinki climate, month by month
January
0° / -5°C
~16 rain days
Tough
February
0° / -5°C
~12 rain days
Tough
March
2° / -4°C
~10 rain days
Tough
April
7° / 0°C
~10 rain days
Fair
May
13° / 6°C
~9 rain days
Good
June
20° / 12°C
~9 rain days
Excellent
July
21° / 14°C
~14 rain days
Good
August
20° / 14°C
~14 rain days
Good
September
16° / 10°C
~10 rain days
Good
October
10° / 6°C
~14 rain days
Fair
November
5° / 1°C
~14 rain days
Tough
December
0° / -4°C
~14 rain days
Tough
Plan around it
Dates locked in? Start from the Helsinki travel guide or jump straight to a 3-day, 5-day or 7-day itinerary.