Mariehamn weather in April
Temperature, sea and sunshine in April: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in April
Poor
Best time to visit: June – August
What is the weather like in Mariehamn in April?
In April, Mariehamn is cold: daytime highs average 5 °C, and nights cool down to about 2 °C. The sea averages 2.7 °C – swimming is only for the hardy. The sun shines for around 8 hours a day. Rain falls on about 7 days, adding up to 27 mm. All in all, April is not an ideal month for a holiday in Mariehamn.
April compared
How the weather changes from March to May. Tap a month to open it.
More details for April
- Daylight
- 14 h 29 min06:26 – 20:55
- UV index
- 3 · moderateclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 23 km/haverage daily peakAll months
- Cloud cover
- 58 %on averageAll months
- Hot days
- 0 days30 °C or more
- Snow days
- 1 day1 cm or more of fresh snowAll months
- Time zone
- UTC+3Europe/Mariehamn
How the score comes together
- Temperatureweight 50 %0 %
- Sunshineweight 20 %78 %
- Few rainy daysweight 30 %79 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in April
- Sunscreen
- Warm jacket
Mariehamn in April: quick answers
Is Mariehamn hot in April?
No. In April, Mariehamn is cold: daytime highs average 5 °C and nights drop to about 2 °C.
Can you swim in Mariehamn in April?
Only if you don't mind cold water: in April the sea averages just 2.7 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Mariehamn in April?
Rain falls on about 7 days, adding up to 27 mm.
Mariehamn month by month
The whole year in MariehamnAll destinations: Åland IslandsWhere to go in AprilSea temperature in April
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences