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Photo by Ввласенко, CC BY-SA 3.0, via Wikimedia Commons.
Helsinki in May
sweet spot · the best month to go · the driest month of the year
The year in Helsinki
Tap a month for its page
- JanJHelsinki in January: avoid
- FebFHelsinki in February: avoid
- MarMHelsinki in March: avoid
- AprAHelsinki in April: ok
- MayMHelsinki in May: sweet spot
- JunJHelsinki in June: sweet spot, busy
- JulJHelsinki in July: sweet spot, busy
- AugAHelsinki in August: sweet spot, busy
- SepSHelsinki in September: ok
- OctOHelsinki in October: avoid
- NovNHelsinki in November: avoid
- DecDHelsinki in December: avoid
- Sweet spot
- Good
- OK
- Avoid
- Busy
Plan this trip
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Flights
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Where to stay
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Luxury
Things to do
Car hire
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Travel insurance
Check whether your bank card or home insurance already covers this trip.
If the trip needs a visa, the travel agent or visa centre usually sells the cover it asks for.
Mobile data (eSIM)
Your own plan's EU roaming may already cover this.
Renting a pocket Wi-Fi is the other common way to stay connected.
These are sites people in book with. Each opens in a new tab, on the site's own pages.
The numbers
| Daily high | 14°C |
|---|---|
| Nightly low | 6°C |
| Feels like, afternoon | 11°C |
| Rainy days, 1 mm or more | 6 · 47 mm |
| Humidity | 69% |
| Sunshine | 12.8 h/day |
| Daylight | 17.2 h/day |
| Crowds | 85 / 100, higher is quieter |
Ten-year averages for this calendar month. A rainy day is one with at least 1 mm of rain, as a weather station counts it. The model these figures come from drizzles more than a rain gauge, the more so the warmer the month, so its days count from 2 mm, rising to 5 mm in the hottest.
Weather read at the centre, 16 km from the airport (HEL): ten years of ERA5 and ERA5-Land reanalysis, through Open-Meteo's open data.
How busy it gets
Public holidays in May
Holidays crowd a place out and push fares up around them; they count toward the crowd score above.
Helsinki in pictures
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Diego Delso, CC BY-SA 3.0, via Wikimedia Commons
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Óðinn, CC BY-SA 2.5 ca, via Wikimedia Commons
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Óðinn, CC BY-SA 2.5 ca, via Wikimedia Commons
What to pack
- Warm layers for the evenings, which drop to about 6°C.
- A packable rain jacket for the 6 or so rainy days.
- Sun protection: about 13 hours of sunshine a day.
Each line is a threshold over the ten-year figures above, not advice from anywhere else.
Before you go
| Cost of living | expensive — prices run about 85% of the United States' (World Bank, 2025) |
|---|---|
| Currency | Euro |
| Languages | Finnish, Swedish |
| Plugs | Type C and F, 230 V |
| Driving | On the right |
| Calling code | +358 |
| Travel advice | No advice against travel — UK Foreign Office, updated 2026-08-11 Exercise normal security precautions — Global Affairs Canada, updated 2026-09-24 Level 1: Exercise Normal Precautions — US State Department, updated 2026-03-13 |
| Health | UK Foreign Office health advice |
Facts from Wikidata (CC0), the UK Foreign Office (Open Government Licence) and the World Bank, refreshed 2026-10-08. The advisory is written for British travellers; entry rules depend on your passport.Travel advice for American readers is the US State Department's (public domain), and for Canadian readers Global Affairs Canada's (Open Government Licence - Canada), each in its own words and written for its own citizens; entry rules depend on your passport.
On arrival in Helsinki: the apps, paying, getting around, tipping and the emergency numbers.
May elsewhere
In May from
The other months at Helsinki
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