Mariehamn in May
6.0out of 10
Possible, with caveats
Cool: highs only around 8°C. Some rain: about 7 rainy days.
8°CAvg high
6°CAvg low
7Rainy days (33 mm)
16:50 hDaylight
05:11Sunrise · 22:02 Sunset
Why this score
- Cool: highs only around 8°C
- Some rain: about 7 rainy days
What to wear and pack
- A warm jacket
- Comfortable walking shoes
How reliable is the forecast?
Rainfall in May is fairly consistent from year to year (2.9 days). Averages cover 30 years (1991–2020). Individual days can differ a lot.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | 1°C | -1°C | 43 mm | 11 | – | – | 4.2 |
| February | 0°C | -2°C | 29 mm | 8 | – | – | 4.2 |
| March | 1°C | -1°C | 28 mm | 7 | – | – | 4.5 |
| April | 4°C | 2°C | 29 mm | 7 | – | – | 5.2 |
| May | 8°C | 6°C | 33 mm | 7 | – | – | 6.0 |
| June | 13°C | 11°C | 48 mm | 8 | – | – | 6.6 |
| July | 17°C | 15°C | 48 mm | 8 | – | – | 7.3 |
| August | 18°C | 16°C | 55 mm | 10 | – | – | 7.0 |
| September | 14°C | 12°C | 54 mm | 9 | – | – | 6.6 |
| October | 9°C | 8°C | 62 mm | 12 | – | – | 5.5 |
| November | 6°C | 4°C | 60 mm | 13 | – | – | 4.8 |
| December | 3°C | 1°C | 56 mm | 13 | – | – | 4.2 |
Frequently asked questions
How hot is Mariehamn in May?
Daytime highs average 8°C and nights about 6°C.
When is the best time to visit Mariehamn?
The best months are July, August.