The highest day temperature in January 2025 was 52°F. The lowest night temperature was 29°F. The average values for day and night temperatures during January were 40.8°F и 35.9°F respectivly.

The average sea surface temperature in January 2025 for Groningen was 37.5°F. The maximum and minimum values were 34.6°F and 40.0°F respectively.

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

Precipitation total in January for Groningen is 1.9 in.

The average wind speed in January is 12.9 mph. It makes January the most windy month of the year for Groningen.

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 Groningen in January is 2.8 hours.