Roussillon en Isere Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Roussillon en Isere.
Climate overview of Roussillon en Isere
The climate in Roussillon en Isere, Rhône-Alps, France, is marked by large temperature swings across the seasons, ranging from 28°C (82°F) in July to 8°C (46°F) in January.
With around 1043 mm (41 in) of annual rain/snowfall, Roussillon en Isere has a notably wet climate. However, this rain/snowfall is not evenly distributed — the city has warm summers and cold winters. The wettest month is October. July is the sunniest month, averaging 9.2 hours of sunshine per day.
Roussillon en Isere Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Roussillon en Isere - and find the best time to visit.
Monthly Temperature in Roussillon en Isere
In Roussillon en Isere, temperatures differ significantly between summer and winter months. Average daytime temperatures reach a comfortable 28°C (82°F) in July. In January, the coolest month of the year, temperatures drop to a chilly 8°C (46°F).
At night, temperatures range from around 16°C (61°F) in July to 0°C (32°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Roussillon en Isere
Roussillon en Isere experiences significant rain/snowfall throughout the year, averaging 1043 mm (41 in) of precipitation annually. Roussillon en Isere experiences moderate seasonal variation in rainfall, with monthly averages ranging from 110 mm (4.3 in) in October, the wettest month, and 65 mm (2.6 in) in March, the driest month. For more details, please visit our Roussillon en Isere Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Roussillon en Isere
Roussillon en Isere can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 9.2 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 2.5 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Humidity in Roussillon en Isere by Month
The relative humidity is high throughout the year in Roussillon en Isere.
The city experiences its highest humidity in December, reaching 82%. In July, the humidity drops to its lowest level at 67%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Roussillon en Isere
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May, June, July and August
- Warmest weather: July and August
- Most sunshine: July
- Fewest rainy days: July, August and September
- Seasonal pattern: Warm summers and cold winters
Frequently asked questions about the climate in Roussillon en Isere
What is the best time to visit Roussillon en Isere?
May, June, July and August typically offer the most optimal weather in Roussillon en Isere. In contrast, January, February, November and December tend to have less optimal conditions. Roussillon en Isere has warm summers and cold winters.
What temperatures can I expect in Roussillon en Isere?
Daytime highs range from 8°C (46°F) in January to 28°C (82°F) in July. Nighttime lows range from 0°C (32°F) to 16°C (61°F). Temperatures vary considerably through the year.
How much rain does Roussillon en Isere get?
Annual rainfall is around 1043 mm (41 in). October is the wettest month with 110 mm (4.3 in), while March is the driest with 65 mm (2.6 in).
How sunny is Roussillon en Isere?
Roussillon en Isere receives around 2,028 hours of sunshine per year. July is the sunniest month with 277 hours, while December is the cloudiest with just 74 hours. Overall, Roussillon en Isere enjoys abundant sunshine.
Roussillon en Isere 3-Day Forecast
Roussillon en Isere 3-Day Forecast
Roussillon en Isere on the map
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