Finland
Finland in May
Where it is warm, dry and good for swimming in Finland in May — compared across the country’s main destinations.
Quick answers
- Where is it warmest in Finland in May?
- Mäntsälä is the warmest of the 16 destinations compared, with highs of 16°C (61°F) in May; Ivalo is the coolest at 9°C (48°F).
- Can you swim in the sea in Finland in May?
- Hardly: even the warmest water, at Raseborg (6°C (43°F)), stays below 21 °C.
Warmest
16°
Mäntsälä
Coolest
9°
Ivalo
Driest
27 mm
Houtskär
Warmest sea
6°
Raseborg
Across Finland, May highs run from 9°C (48°F) (Ivalo) to 16°C (61°F) (Mäntsälä). On average it is 7.5 °C (13 °F) warmer than April. Most destinations stay largely dry. Best bets this month: Helsinki, Vantaa, and Mäntsälä.
Best places in Finland in May
-2_(s%C3%A4%C3%A4t%C3%B6).jpg.avif)
48 
Helsinki
Uusimaa · Finland
14° / 6° 32 mm May
55
Vantaa
Uusimaa · Finland
15° / 5° 34 mm May
56
Mäntsälä
Uusimaa · Finland
16° / 4° 34 mm May
53
Nokia
Pirkanmaa · Finland
16° / 4° 36 mm May
49
Raseborg
Uusimaa · Finland
14° / 5° 33 mm May
40
Kristinestad
Ostrobothnia · Finland
12° / 4° 29 mm May
Weather in May by city
| Place | Day | Night | Rain | Sea | Score |
|---|---|---|---|---|---|
| Mäntsälä | 16° | 4° | 34 mm | — | 56 |
| Vantaa | 15° | 5° | 34 mm | — | 55 |
| Nokia | 16° | 4° | 36 mm | — | 53 |
| East Helsinki | 14° | 5° | 33 mm | 6° | 52 |
| Raseborg | 14° | 5° | 33 mm | 6° | 49 |
| Suomenniemi | 15° | 4° | 32 mm | — | 49 |
| Helsinki | 14° | 6° | 32 mm | 6° | 48 |
| Punkaharju | 14° | 4° | 31 mm | — | 48 |
| Katajanokka | 14° | 6° | 32 mm | 6° | 48 |
| Velkua | 12° | 5° | 30 mm | 6° | 44 |
| Korpo | 12° | 5° | 29 mm | 6° | 42 |
| Iniö | 11° | 5° | 28 mm | 6° | 41 |
| Kristinestad | 12° | 4° | 29 mm | — | 40 |
| Houtskär | 11° | 5° | 27 mm | 6° | 39 |
| Levi | 9° | 0° | 31 mm | — | 25 |
| Ivalo | 9° | 0° | 31 mm | — | 17 |
Festivals in Finland in May
- World Village Festival Annual festival in Helsinki, Finland
- Åcon Annual science fiction convention in Mariehamn, Åland, Finland
Frequently asked questions
What is the weather like in Finland in May?
Average daytime highs range from 9° in Ivalo to 16° in Mäntsälä.
Can you swim in Finland in May?
The sea is cool: the warmest water is around Raseborg at about 6°.