Mariehamn weather
At 11:45 PM local time it was cloudy and 8°C (46°F). Light rain for 2 of the next 24 hours (under 1 mm/h, 0.5 mm total) — cloudy, but fine to be out. Best months for weather: Jun–Aug. Below: today's sky, the hour-by-hour rain chance and the 16-day forecast for Mariehamn, Mariehamn, Aland Islands.
Current conditions
- Clouds
- 100%
- Chance of rain
- 0%
- Rain
- 0.0 mm/h
Hourly Forecast
Light rain for 2 of the next 24 hours (under 1 mm/h, 0.5 mm total) — cloudy, but fine to be out
Daily Forecast
Best Time to Visit
Peak season Jun–AugOff season Oct–Apr
About Mariehamn weather
Is it raining in Mariehamn right now?
No. It’s cloudy and 8° right now. Light rain for 2 of the next 24 hours (under 1 mm/h, 0.5 mm total) — cloudy, but fine to be out.
What’s the weather like in Mariehamn this week?
Over the next 7 days, expect highs of 7–10° and lows of 4–7°. Rain is likely on 2 of 7 days (Sunday, Monday). The driest day looks like Saturday.
Has it been raining in Mariehamn lately?
In the past 7 days, Mariehamn had 2 rainy days and 7.0 mm of rain in total.
What should I pack for Mariehamn?
For the coming week, bring an umbrella or rain jacket and a warm layer for the evenings.
Mariehamn weather by month
When is the best time to visit Mariehamn?
Based on weather alone, the best time to visit Mariehamn is Jun–Aug, according to NASA's 2001–2025 climate averages. Oct–Apr tends to be the least pleasant. Average highs run from 0°C (32°F) in February to 19°C (65°F) in July.
What is the rainiest month in Mariehamn?
October is the wettest month, with about 70 mm (2.8 in) of rain on average. April is the driest, with about 36 mm (1.4 in).
What is the hottest month in Mariehamn?
July is the warmest, with average highs of 19°C (65°F) and lows of 16°C (60°F). February is the coolest, with highs of 0°C (32°F) and lows of -2°C (28°F).
Does Mariehamn have a rainy season?
Not a strong one. No month averages more than 150 mm of rain; the wettest is October at about 70 mm (2.8 in).
How warm is the sea in Mariehamn?
The sea is warmest in August at about 18°C (65°F) and coolest in February at about 1°C (33°F). It stays cool all year.
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis), sea temperature from Open-Meteo Marine, forecast and current conditions from Open-Meteo. Page updated . How we rate months