The highest day temperature in August 2025 was 85°F. The lowest night temperature was 53°F. The average values for day and night temperatures during August were 70.0°F и 60.5°F respectivly.

The average sea surface temperature in August 2025 for Gdynia was 68.6°F. The maximum and minimum values were 65.6°F and 71.8°F respectively.

You can expect various weather conditions during August. Be ready for sunny, cloudy or even gloomy days.

Precipitation total in August for Gdynia is 2.3 in. It makes august one of the most rainy months of the year.

The average wind speed in August is 9.3 mph. It makes August one of the most windless 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 August is 9.2 hours.