Grigny Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Grigny.
Climate overview of Grigny
Grigny, Ile de France, France, sees big temperature differences between seasons, with July peaking at 26°C (79°F) and January dropping to 8°C (46°F).
Annual rain/snowfall is moderate at around 740 mm (29 in), with December being the wettest month. The city also has warm summers and cold winters. The sunniest month is July, with 7.5 hours of sunshine per day on average.
Grigny Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Grigny - and find the best time to visit.
Monthly Temperature in Grigny
Visitors to Grigny can expect significant temperature changes throughout the year. Average daytime temperatures reach a comfortable 26°C (79°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 15°C (59°F) in July to 2°C (36°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Grigny
Generally, Grigny experiences moderate precipitation patterns, averaging 740 mm (29 in) yearly. Despite minor fluctuations, Grigny enjoys fairly consistent precipitation throughout the year. In December, you can expect around 74 mm (2.9 in) of precipitation, while in September, Grigny receives about 54 mm (2.1 in). For more details, please visit our Grigny 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 Grigny
Grigny can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 7.5 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 1.9 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Grigny by Month
The relative humidity is high throughout the year in Grigny.
The city experiences its highest humidity in November, reaching 84%. In April, the humidity drops to its lowest level at 69%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Grigny
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, August and September
- Warmest weather: July and August
- Most sunshine: July and August
- Fewer rainy days: June, July, August, September and October
- Seasonal pattern: Warm summers and cold winters
Frequently asked questions about the climate in Grigny
What is the best time to visit Grigny?
May, June, July, August and September typically offer the most optimal weather in Grigny. In contrast, January, February and December tend to have less optimal conditions. Grigny has warm summers and cold winters.
What temperatures can I expect in Grigny?
Daytime highs range from 8°C (46°F) in January to 26°C (79°F) in July. Nighttime lows range from 2°C (36°F) to 15°C (59°F). Temperatures vary considerably through the year.
How much rain does Grigny get?
Annual rainfall is around 740 mm (29 in). December is the wettest month with 74 mm (2.9 in), while September is the driest with 54 mm (2.1 in).
How sunny is Grigny?
Grigny receives around 1,725 hours of sunshine per year. July is the sunniest month with 224 hours, while December is the cloudiest with just 58 hours.
Grigny 3-Day Forecast
Grigny 3-Day Forecast
Grigny on the map
Grigny is highlighted - select any city to see its climate.
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