The highest day temperature in January 2025 was 39°F. The lowest night temperature was 18°F. The average values for day and night temperatures during January were 31.6°F и 30.6°F respectivly.

The average sea surface temperature in January 2025 for Porvoo was 31.0°F. The maximum and minimum values were 29.8°F and 32.6°F respectively.

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

Precipitation total in January for Porvoo is 2.1 in. It makes january one of the most rainy months of the year.

The average wind speed in January is 13.4 mph. It makes January one of the most windy months of the year for Porvoo.

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 January is 1.6 hours.