Helsinki
May
Weather in Helsinki for May 2025
Your guide to Helsinki weather in May - trends and predictions
In general, the average temperature in Helsinki at the beginning of May is 8.1 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 15.4 °C by the end of May.
Helsinki in May brings notable rainfall, with an average of 17 rainy days and a total precipitation of 58.2 mm.
Temperatures
Rain 🌧️
14
Dry days
17
Rainy days
0
Snow days
13°/6°
Temperatures
18 km/h
Avg max wind
68 %
Avg humidity
Helsinki in May average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  9° | 2  8° | 3  8° | 4 9° | |||
| 5  7° | 6  8° | 7 8° | 8 9° | 9 10° | 10 12° | 11  15° |
| 12 15° | 13  15° | 14 16° | 15 15° | 16 15° | 17 14° | 18 15° |
| 19 15° | 20 15° | 21 14° | 22 14° | 23 16° | 24 17° | 25 16° |
| 26 14° | 27 15° | 28 15° | 29 16° | 30 16° | 31 16° |
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Temperatures trend during May in Helsinki
See the weather trend as well as the moving average line
May weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 May | Patchy rain possible | 9° /1° | 0.5 mm | 3 | |
| 2 May | Overcast | 8° /2° | 4.9 mm | 3 | |
| 3 May | Partly cloudy | 8° /2° | 0.4 mm | 2 | |
| 4 May | Patchy rain possible | 9° /2° | 0.6 mm | 2 | |
| 5 May | Heavy rain at times | 7° /1° | 1.9 mm | 2 | |
| 6 May | Moderate or heavy rain shower | 8° /1° | 3 mm | 3 | |
| 7 May | Heavy rain at times | 8° /1° | 1.3 mm | 2 | |
| 8 May | Moderate rain at times | 9° /1° | 0.8 mm | 3 | |
| 9 May | Patchy rain possible | 10° /1° | 0.4 mm | 3 | |
| 10 May | Overcast | 12° /4° | 2.2 mm | 3 | |
| 11 May | Sunny | 15° /6° | 1.4 mm | 4 | |
| 12 May | Partly cloudy | 15° /6° | 0.3 mm | 4 | |
| 13 May | Cloudy | 15° /6° | 0.3 mm | 4 | |
| 14 May | Patchy rain possible | 16° /7° | 0 mm | 4 | |
| 15 May | Sunny | 15° /7° | 0.7 mm | 4 | |
| 16 May | Sunny | 15° /7° | 2.1 mm | 4 | |
| 17 May | Overcast | 14° /6° | 2.2 mm | 4 | |
| 18 May | Moderate or heavy rain shower | 15° /6° | 2.8 mm | 4 | |
| 19 May | Sunny | 15° /7° | 2.5 mm | 4 | |
| 20 May | Cloudy | 15° /7° | 1.4 mm | 4 | |
| 21 May | Moderate or heavy rain shower | 14° /6° | 4.3 mm | 4 | |
| 22 May | Overcast | 14° /6° | 0.1 mm | 4 | |
| 23 May | Patchy rain possible | 16° /7° | 0.3 mm | 4 | |
| 24 May | Sunny | 17° /8° | 0 mm | 5 | |
| 25 May | Partly cloudy | 16° /9° | 2.3 mm | 4 | |
| 26 May | Moderate or heavy rain shower | 14° /7° | 10.5 mm | 3 | |
| 27 May | Moderate or heavy rain shower | 15° /6° | 3.9 mm | 4 | |
| 28 May | Overcast | 15° /7° | 2.2 mm | 4 | |
| 29 May | Sunny | 16° /7° | 0.7 mm | 4 | |
| 30 May | Sunny | 16° /7° | 0.8 mm | 4 | |
| 31 May | Overcast | 16° /8° | 3.6 mm | 4 | |
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Important Notice
Our weather forecast for Helsinki in May is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Helsinki forecast closer to your planned date for the most up-to-date weather information.
Helsinki in May - FAQ
What are the expected maximum and minimum temperatures in Helsinki during May?
During May, expect a variety of temperatures with highs around 13° and lows near 6°, suitable for diverse activities and preferences.
How much rainfall should be expected in Helsinki during May?
Moderate rainfall is anticipated in Helsinki during May, with a total of 58.2 mm spread over approximately 17 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Helsinki during May?
The average wind speed in Helsinki during May is 18 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Helsinki
Explore the daily rainfall trends and prepare for Helsinkis May weather 💧
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