Weather in Mariehamn in March 2025
Average weather
Average temperature in Mariehamn in March
Going from a maximum of +6°C during the day to a minimum of -5°C during the night, the temperature in March averages around +1°C.
The average maximum temperature goes down 45% by the end of the month, compared with the beginning of the month, from +4°C to -1°C.
Is Mariehamn warm or cold in March?
Mariehamn is typically cool in March.
Maximum temperatures go up compared to the previous month from -1°C to +1°C. The minimum temperature also goes up from -4°C to -3°C.
Pack a sweater and a jacket as there will be cooler temperatures.
March is one of the coolest months in Mariehamn, here is the comparison with other months:
Climate in Mariehamn in March
| February | March | April | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| -1°C | +1°C | +5°C | ||||
| Min. temperature | ||||||
| -23°C | -18°C | -8°C | ||||
| Max. temperature | ||||||
| +10°C | +15°C | +15°C | ||||
| Rainfall | ||||||
| 7 mm | 7 mm | 21 mm | ||||
| Wind | ||||||
| 6 m/s | 6 m/s | 5 m/s | ||||
| Humidity | ||||||
| 84% | 84% | 84% | ||||
| Air pressure | ||||||
| 1011 HPa | 1011 HPa | 1013 HPa | ||||
| Sunny days | ||||||
| 2 | 5 | 7 | ||||
| Cloudy days | ||||||
| 14 | 14 | 11 | ||||
| Rainy days | ||||||
| 2 | 3 | 7 | ||||
| Snowy days | ||||||
| 10 | 10 | 4 | ||||
March weather is still as ok as in February. It’s getting warmer as March arrives. The average maximum temperature goes up from -1°C to +1°C during the day. The rainfall amount in March stays the same as in the previous month with a 7 mm of total precipitation. Humidity levels don’t change as the month goes on, averaging around 84%. The average wind speed doesn’t change much during March, staying around 6 m/s. The good news is there are likely to be more sunny days in March, from 2 to 5.
April brings much the same weather, it remains ok.
Wind
The average wind speed is 4 m/s getting up to 8 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Mariehamn is gradually increasing during March, going from 4 m/s to 5 m/s over the course of the month.
Rain
Snow
March is one of the snowiest months in Mariehamn.
Here’s how March is compared with other months in the amount of snow, total mm:
How was the weather last March in Mariehamn?
Climate Change over Years
The climate in Mariehamn in March has not changed much over the last 43 years.
The average temperature was the lowest in 1987 (+5°C) and the highest in 2020 (+11°C). The driest year was 2018 with only 269 mm of rainfall, and the wettest year was 2020 with 612 mm.
FAQ
Is March a good time to visit Mariehamn?
Can you sunbathe in Mariehamn in March?
Is Mariehamn rainy in March?
Is it sunny in Mariehamn in March?
Monthly weather in Mariehamn
Source of the data
For this page, we’ve looked at the typical weather in Mariehamn, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.