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Thessaloníki Weather by Month
Average temperatures, rainfall and humidity for Thessaloníki, Greece, month by month, built from OpenWeather’s historical records. Use it to see what a typical Thessaloníki month looks like before you travel — then check the live Thessaloníki forecast for the days ahead.
Warmest month
July
33°C average high
Coolest month
January
3°C average low
Wettest month
September
67 mm of rain
Driest month
July
13 mm of rain
Average temperature and rainfall in Thessaloníki 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 | 10°C | 3°C | -12°C / 21°C | 28 mm | 72% | 11 km/h |
| February | 13°C | 6°C | -8°C / 23°C | 28 mm | 70% | 10 km/h |
| March | 16°C | 7°C | -4°C / 25°C | 40 mm | 68% | 11 km/h |
| April | 20°C | 10°C | 1°C / 31°C | 41 mm | 64% | 11 km/h |
| May | 25°C | 15°C | 6°C / 34°C | 25 mm | 61% | 11 km/h |
| June | 30°C | 20°C | 12°C / 39°C | 31 mm | 57% | 10 km/h |
| July | 33°C | 23°C | 17°C / 40°C | 13 mm | 52% | 11 km/h |
| August | 33°C | 23°C | 2°C / 41°C | 24 mm | 53% | 10 km/h |
| September | 28°C | 19°C | 10°C / 37°C | 67 mm | 59% | 10 km/h |
| October | 22°C | 13°C | 3°C / 30°C | 30 mm | 67% | 9 km/h |
| November | 17°C | 10°C | -5°C / 26°C | 44 mm | 72% | 9 km/h |
| December | 12°C | 5°C | -8°C / 20°C | 32 mm | 72% | 10 km/h |
Best time to visit Thessaloníki
The most comfortable time to visit Thessaloníki is generally April to May and October, balancing mild daytime temperatures against the driest stretch of the year. The city has strongly marked seasons and rain concentrates around September, totalling about 403 mm a year.
Travellers who prefer heat should aim for July, when highs average 33°C. September is the month to avoid if rain would spoil your plans — it averages 67 mm, roughly 5× the rainfall of the driest month (July).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Thessaloníki forecast for what is happening now.