Climate Insights for Castellane

The climate in Castellane is temperate. The average annual temperature is 12°C and approximately 976mm of precipitation falls per year. Castellane receives a notable amount of rainfall throughout the year, including during its driest month. Castellane is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, June. The coldest months are January, December, February, when temperatures can drop to 0°C. Light snow can occur between January and December.

Temperatures in Castellane vary considerably across the year, with a 27°C difference between the coldest and warmest months. The warmest month is July, when average highs reach 27°C and the mean temperature sits around 21°C. The coldest month is January, when overnight lows fall to 0°C and the daily average is 4°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs. The sharpest temperature change occurs between October and November, with a 5°C shift in average temperatures.

Castellane is a moderately rainy area, receiving approximately 976mm of precipitation annually, which averages out to around 81mm per month. The wettest month is October, averaging 133mm of rainfall. November and May also tend to see above-average precipitation. The driest month is July, with just 32mm. That's 101mm less than October, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall. Light snowfall can occur between January and December, totalling around 41cm annually. February is the snowiest month with approximately 13cm.

Castellane is mildly breezy, with an average annual wind speed of 13km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is March, averaging 16km/h, though still comfortable for most outdoor activities. The calmest conditions occur in December, with average winds dropping to 12km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 4km/h between the calmest and windiest months.

It is currently spring in Castellane, which began on March 20, 2026. Castellane is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in July at around 27°C, while the coldest stretch bottoms out in January near 0°C. Summer is next, beginning on June 21, 2026 — 88 days from now.

The best time to visit Castellane is during June, July, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 19°C with modest rainfall averaging 63mm per month. By contrast, January can be quite cold with temperatures dropping to 0°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

The table below shows monthly climate averages for Castellane based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.