Which is the hottest month in Mariehamn?

The hottest time of year in Mariehamn is normally July. Expect maximum daytime temperatures to reach 19°C.

Which month has the most rain in Mariehamn?

In terms of rainfall, August is usually the wettest month in Mariehamn with 64mm on average. There are normally 14 days in August with some rain.

When is it sunniest in Mariehamn?

The sunniest time of year in Mariehamn is normally June with bright sunshine on average for 47% of daylight hours; that's 9 hours of sunshine per day.

When is the sea warmest in Mariehamn?

The sea is usually at its warmest in Mariehamn in August when the water temperature reaches 17°C.

Best time to visit Mariehamn

Q: When is the best time to visit Mariehamn?

The best time to visit Mariehamn is July based on the following average weather conditions. Maximum daytime temperature = 22 - 30°C. Daily hours of sunshine = 10 hours or more.

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Mariehamn by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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Destination

When is the best time to visit Mariehamn?

The best time to visit Mariehamn is July based on the following average weather conditions.

Maximum daytime temperature = 72 - 86°F [remove]
Daily hours of sunshine = 10 hours or more [remove]

Change the criteria to reflect your weather preferences.

0
Jan
0
Feb
0
Mar
1
Apr
2
May
3
Jun
3.5
Jul
2
Aug
0.5
Sep
0
Oct
0
Nov
0
Dec

Change criteria

Max Day Temperature (°F)

30
Jan
28
Feb
34
Mar
43
Apr
54
May
63
Jun
66
Jul
64
Aug
57
Sep
48
Oct
41
Nov
34
Dec

Hours of Sunshine (daily)

1
Jan
1
Feb
3
Mar
5
Apr
8
May
9
Jun
8
Jul
6
Aug
4
Sep
2
Oct
1
Nov
1
Dec

Best time to visit

Destination

Daytime temperature

Sunshine hours

Sea temperature

Monthly rainfall

Days with some rain

Heat & humidity

The weather guide for Finland (Mariehamn) shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by meteoblue. Find out more about our data sources.

Metric (°C) | Imperial (°F)