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Guilliers Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Guilliers.
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Climate overview of Guilliers
Temperatures in Guilliers, Brittany, France, vary greatly throughout the year. August is the hottest month at 24°C (75°F), while January is the coldest at 10°C (50°F).
Guilliers sees a moderate amount of rain/snowfall, totalling around 756 mm (30 in) per year. It experiences warm summers and cold winters, creating some seasonal variation. The sunniest month is June, with 7.2 hours of sunshine per day on average.
Guilliers Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Guilliers - and find the best time to visit.
Monthly Temperature in Guilliers
The climate in Guilliers is known for significant temperature differences throughout the year, making the weather dynamic. Average maximum daytime temperatures range from a comfortable 24°C (75°F) in August, the warmest time of the year, to a chilly 10°C (50°F) during cooler months like January.
At night, you can expect temperatures ranging from 13°C (55°F) in August to around 3°C (37°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Guilliers
Generally, Guilliers receives mid-range precipitation levels, with 756 mm (30 in) annually. Year-round, Guilliers 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, July, with 48 mm (1.9 in), is minimal. For more details, please visit our Guilliers 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 Guilliers
Seasonal changes in sunshine hours are quite dramatic in Guilliers. While June receives considerable daily sunshine with up to 7.2 hours, December marks the darkest time of the year, where sunshine is scarce with only 2.3 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Data from: Rennes, France (54 KM, 33 Miles).
Daily hours of sunshine
Data from: Rennes, France (54 KM, 33 Miles).
Humidity in Guilliers by Month
The city experiences its highest humidity in January, reaching 87%. In June, the humidity drops to its lowest level at 75%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Data from: Rennes, France (54 KM, 33 Miles).
Best Time to Visit Guilliers
For comfortable weather, consider visiting Guilliers in June, July, August and September. Conditions are usually least favourable in January and December.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
Jan
cold
Feb
mixed
Mar
mixed
Apr
good
May
very good
Jun
excellent
Jul
excellent
Aug
excellent
Sep
excellent
Oct
good
Nov
mixed
Dec
cold
- Best overall: June, July, August and September
- Warmest weather: July and August
- Most sunshine: June and July
- Fewest rainy days: June, July, August and September
- Seasonal pattern: Warm summers and cold winters
Frequently asked questions about the climate in Guilliers
What is the best time to visit Guilliers?
June, July, August and September typically offer the most optimal weather in Guilliers. In contrast, January and December tend to have less optimal conditions. Guilliers has warm summers and cold winters.
What temperatures can I expect in Guilliers?
Daytime highs range from 10°C (50°F) in January to 24°C (75°F) in August. Nighttime lows range from 3°C (37°F) to 13°C (55°F). Temperatures vary considerably through the year.
How much rain does Guilliers get?
Annual rainfall is around 756 mm (30 in). December is the wettest month with 76 mm (3 in), while July is the driest with 48 mm (1.9 in).
How sunny is Guilliers?
Guilliers receives around 1,724 hours of sunshine per year. June is the sunniest month with 217 hours, while December is the cloudiest with just 68 hours.
Guilliers 3-Day Forecast
Guilliers on the map
Guilliers is highlighted - select any city to see its climate.
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