Weather in Helsinki in May
May in Helsinki is cool outdoor weather: usable if you dress for it, not a beach brief.
In Finland, this is how Helsinki actually wears May, not how a country centroid would. Compared with July and February, May sits in the middle of Helsinki's year.
Pack for Helsinki in May, not for a brochure that was photographed in another season.
- Average temp
- 10°C
6–15°C
- Rainfall
- 41 mm
Not much rain
- Sunshine
- 8.8 h
hours per day
What to expect
Daytime
Cool days in Helsinki: a jumper you can take off, a shell in the bag. Walking is fine. Lingering outside without a layer is optimism.
Mornings and evenings are colder than the postcard. Pack for both, especially if you leave the built-up centre.
Rain
Mixed skies in Helsinki in May. Dry days and wet days share the month. Outdoor plans need a backup, not a cancellation policy.
Pack a shell you will actually carry. The monthly table is the place for totals. This is the feel: usable, interrupted.
Evening
Evenings are cooler. A layer helps after sunset.
What to pack
Sun protection
A layer for cooler evenings
Where to stay in Helsinki
Dates are a starting point for May.
Travel guides for Helsinki
What to read before you book.
Average weather in Helsinki
TemperatureRainfall
Similar weather in May
Other destinations whose May averages sit close to this one.
Check another month
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FAQs about Helsinki
Climate averages for Helsinki, 1991–2020.
The best time to visit Helsinki is between May and October, the most comfortable stretch of the year on these averages.
July is the hottest month, with an average around 18°C.
August is the wettest month, with about 84 mm of rain.
No. These are 1991–2020 climate normals from Meteostat, not a live forecast. Actual weather in any given week can differ.
