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Castelnau-le-Lez Weather by Month
Average temperatures, rainfall and humidity for Castelnau-le-Lez, France, month by month, built from OpenWeather's historical records. Use it to see what a typical Castelnau-le-Lez month looks like before you travel — then check the live Castelnau-le-Lez forecast for the days ahead.
Warmest month
July
32°C average high
Coolest month
January
3°C average low
Wettest month
April
90 mm of rain
Driest month
July
21 mm of rain
Average temperature and rainfall in Castelnau-le-Lez 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 | 11°C | 3°C | -4°C / 21°C | 51 mm | 72% | 14 km/h |
| February | 13°C | 4°C | -6°C / 23°C | 56 mm | 72% | 14 km/h |
| March | 16°C | 6°C | -2°C / 25°C | 63 mm | 67% | 15 km/h |
| April | 19°C | 9°C | 0°C / 29°C | 90 mm | 64% | 14 km/h |
| May | 23°C | 12°C | 6°C / 34°C | 35 mm | 63% | 14 km/h |
| June | 29°C | 17°C | 10°C / 42°C | 35 mm | 58% | 13 km/h |
| July | 32°C | 20°C | 13°C / 42°C | 21 mm | 53% | 14 km/h |
| August | 31°C | 19°C | 11°C / 40°C | 28 mm | 56% | 13 km/h |
| September | 26°C | 15°C | 8°C / 35°C | 57 mm | 63% | 12 km/h |
| October | 21°C | 12°C | -1°C / 31°C | 72 mm | 73% | 13 km/h |
| November | 15°C | 7°C | -2°C / 24°C | 87 mm | 75% | 14 km/h |
| December | 12°C | 4°C | -5°C / 20°C | 48 mm | 77% | 12 km/h |
Best time to visit Castelnau-le-Lez
The most comfortable time to visit Castelnau-le-Lez is generally May and September to October, balancing mild daytime temperatures against the driest stretch of the year. The city has strongly marked seasons and rain concentrates around April, totalling about 643 mm a year.
Travellers who prefer heat should aim for July, when highs average 32°C. April is the month to avoid if rain would spoil your plans — it averages 90 mm, roughly 4× the rainfall of July.
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Castelnau-le-Lez forecast for what is happening now.