The highest day temperature in March 2025 was 49°F. The lowest night temperature was 20°F. The average values for day and night temperatures during March were 37.7°F и 31.5°F respectivly.

The average sea surface temperature in March 2025 for Porvoo was 30.8°F. The maximum and minimum values were 28.6°F and 32.8°F respectively.

Most of the days in March are gloomy but you can also expect sunny days.

Precipitation total in March for Porvoo is 1.3 in. It makes march the least rainy month of the year.

The average wind speed in March is 11.7 mph.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Porvoo in March is 4.6 hours.