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Gdynia Weather by Month
Average temperatures, rainfall and humidity for Gdynia, Poland, month by month, built from OpenWeather's historical records. Use it to see what a typical Gdynia month looks like before you travel — then check the live Gdynia forecast for the days ahead.
Warmest month
August
24°C average high
Coolest month
January
-2°C average low
Wettest month
November
51 mm of rain
Driest month
April
24 mm of rain
Average temperature and rainfall in Gdynia by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 3°C | -2°C | -17°C / 16°C | 35 mm | 88% | 19 km/h |
| February | 4°C | -1°C | -21°C / 16°C | 25 mm | 84% | 17 km/h |
| March | 8°C | 1°C | -17°C / 22°C | 28 mm | 77% | 16 km/h |
| April | 12°C | 4°C | -6°C / 27°C | 24 mm | 71% | 16 km/h |
| May | 17°C | 8°C | -3°C / 29°C | 36 mm | 70% | 15 km/h |
| June | 22°C | 12°C | 3°C / 37°C | 36 mm | 72% | 14 km/h |
| July | 23°C | 14°C | 7°C / 35°C | 36 mm | 76% | 14 km/h |
| August | 24°C | 14°C | 7°C / 34°C | 37 mm | 74% | 13 km/h |
| September | 19°C | 11°C | 1°C / 32°C | 30 mm | 78% | 14 km/h |
| October | 13°C | 7°C | -4°C / 25°C | 45 mm | 84% | 17 km/h |
| November | 7°C | 3°C | -6°C / 16°C | 51 mm | 89% | 15 km/h |
| December | 4°C | 0°C | -15°C / 14°C | 45 mm | 89% | 18 km/h |
Best time to visit Gdynia
The most comfortable time to visit Gdynia is generally June to August, balancing mild daytime temperatures against the driest stretch of the year. The city has strongly marked seasons and rainfall is spread evenly across the months, totalling about 427 mm a year.
Travellers who prefer heat should aim for August, when highs average 24°C. November is the month to avoid if rain would spoil your plans — it averages 51 mm, roughly 2× the rainfall of April.
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Gdynia forecast for what is happening now.