Saint-Gratien Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Saint-Gratien.
Climate overview of Saint-Gratien
The climate in Saint-Gratien, Ile de France, France, is marked by large temperature swings across the seasons, ranging from 26°C (79°F) in July to 8°C (46°F) in January.
Saint-Gratien sees a moderate amount of rain/snowfall, totalling around 744 mm (29 in) per year. It experiences warm summers and cold winters, creating some seasonal variation. July is the sunniest month, averaging 7.5 hours of sunshine per day.
Saint-Gratien Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Saint-Gratien - and find the best time to visit.
Monthly Temperature in Saint-Gratien
In Saint-Gratien, temperatures differ significantly between summer and winter months. Average maximum daytime temperatures range from a comfortable 26°C (79°F) in July, the warmest time of the year, to a chilly 8°C (46°F) during cooler months like January.
At night, you can expect temperatures ranging from 14°C (57°F) in July to around 2°C (36°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Saint-Gratien
On average, Saint-Gratien receives a reasonable amount of rain/snowfall, with an annual precipitation of 744 mm (29 in). Year-round, Saint-Gratien has a balanced climate with minimal variation in precipitation. The difference between the wettest month, December, with 76 mm (3 in), and the driest month, September, with 51 mm (2 in), is minimal. For more details, please visit our Saint-Gratien 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 Saint-Gratien
Seasonal changes in sunshine hours are quite dramatic in Saint-Gratien. While July receives considerable daily sunshine with up to 7.5 hours, December marks the darkest time of the year, where sunshine is scarce 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 Saint-Gratien by Month
The relative humidity is high throughout the year in Saint-Gratien.
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
Wind Speed in Saint-Gratien
The mean wind speed over the year ranges from 3 m/s (6 knots) in May, June, July, August, September, October and November to 4 m/s (8 knots) in January, February, March, April and December. What does this mean?
The mean monthly wind speed over the year (meters per second)
Best Time to Visit Saint-Gratien
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
- Seasonal pattern: Warm summers and cold winters
Frequently asked questions about the climate in Saint-Gratien
What is the best time to visit Saint-Gratien?
May, June, July, August and September typically offer the most optimal weather in Saint-Gratien. In contrast, January, February and December tend to have less optimal conditions. Saint-Gratien has warm summers and cold winters.
What temperatures can I expect in Saint-Gratien?
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 14°C (57°F). Temperatures vary considerably through the year.
How much rain does Saint-Gratien get?
Annual rainfall is around 744 mm (29 in). December is the wettest month with 76 mm (3 in), while September is the driest with 51 mm (2 in).
How sunny is Saint-Gratien?
Saint-Gratien 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.
Saint-Gratien 3-Day Forecast
Saint-Gratien 3-Day Forecast
Saint-Gratien on the map
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