Mariehamn
May
Weather in Mariehamn for May 2026
Your guide to Mariehamn weather in May - trends and predictions
In general, the average temperature in Mariehamn at the beginning of May is 5.6 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 10.4 °C by the end of May.
With an average of 4 rainy days, Mariehamn experiences minimal rainfall in May.
Temperatures
Rain 🌧️
27
Dry days
4
Rainy days
0
Snow days
8°/6°
Temperatures
25 km/h
Avg max wind
79 %
Avg humidity
Mariehamn Weather May
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Temperatures trend during May in Mariehamn
See the weather trend as well as the moving average line
May weather in Mariehamn day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 May |  Patchy rain possible | 5° /3° | 1.4 mm | 2 | |
| 2 May | Patchy rain possible | 7° /3° | 2.4 mm | 2 | |
| 3 May |  Overcast | 6° /4° | 0 mm | 2 | |
| 4 May | Patchy rain possible | 6° /2° | 0.1 mm | 2 | |
| 5 May | Patchy rain possible | 6° /2° | 0.3 mm | 2 | |
| 6 May | Overcast | 5° /2° | 0.1 mm | 2 | |
| 7 May |  Partly cloudy | 4° /2° | 0 mm | 2 | |
| 8 May | Partly cloudy | 5° /3° | 0 mm | 2 | |
| 9 May | Partly cloudy | 6° /3° | 0.5 mm | 3 | |
| 10 May | Overcast | 7° /4° | 0.5 mm | 2 | |
| 11 May |  Sunny | 7° /4° | 0 mm | 3 | |
| 12 May | Sunny | 8° /5° | 0 mm | 3 | |
| 13 May | Sunny | 9° /6° | 0 mm | 3 | |
| 14 May | Sunny | 9° /5° | 1 mm | 3 | |
| 15 May | Partly cloudy | 9° /6° | 0.1 mm | 3 | |
| 16 May |  Heavy rain at times | 9° /6° | 1.3 mm | 2 | |
| 17 May | Heavy rain at times | 9° /6° | 2.5 mm | 2 | |
| 18 May | Sunny | 10° /6° | 0 mm | 4 | |
| 19 May | Sunny | 10° /7° | 0 mm | 4 | |
| 20 May | Sunny | 10° /7° | 0 mm | 3 | |
| 21 May | Sunny | 9° /7° | 0.9 mm | 3 | |
| 22 May | Overcast | 10° /8° | 0 mm | 3 | |
| 23 May |  Moderate rain at times | 10° /8° | 0.4 mm | 3 | |
| 24 May | Sunny | 10° /8° | 0.2 mm | 3 | |
| 25 May | Overcast | 10° /8° | 0.1 mm | 3 | |
| 26 May | Patchy rain possible | 10° /8° | 0.5 mm | 3 | |
| 27 May | Partly cloudy | 10° /8° | 0 mm | 3 | |
| 28 May | Patchy rain possible | 10° /9° | 1.4 mm | 3 | |
| 29 May | Overcast | 10° /7° | 0.9 mm | 3 | |
| 30 May | Sunny | 11° /8° | 2.4 mm | 3 | |
| 31 May | Partly cloudy | 12° /8° | 0.4 mm | 3 | |
| Next | |||||
Important Notice
Our weather forecast for Mariehamn 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 Mariehamn forecast closer to your planned date for the most up-to-date weather information.
Change Month
Mariehamn in May - FAQ
What are the expected maximum and minimum temperatures in Mariehamn during May?
During May, expect a variety of temperatures with highs around 8° and lows near 6°, suitable for diverse activities and preferences.
How much rainfall should be expected in Mariehamn during May?
Expect minimal rainfall in Mariehamn during May, with a total of 12.9 mm over approximately 4 days. This minimal precipitation is unlikely to significantly impact plans.
Will it snow in Mariehamn in May 2026?
Mariehamn typically sees 0.02 cm of snowfall during May.
What are the typical wind conditions in Mariehamn during May?
The average wind speed in Mariehamn during May is 25 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Mariehamn
Explore the daily rainfall trends and prepare for Mariehamns May weather 💧
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