The highest day temperature in January 2025 was 45°F. The lowest night temperature was 28°F. The average values for day and night temperatures during January were 37.8°F и 35.3°F respectivly.

The average sea surface temperature in January 2025 for Gdynia was 38.4°F. The maximum and minimum values were 36.6°F and 41.0°F respectively.

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

Precipitation total in January for Gdynia is 1.6 in. It makes january one of the most rainy months of the year.

The average wind speed in January is 13.3 mph. It makes January one of the most windy months of the year for Gdynia.

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 Gdynia in January is 2.4 hours.