Bois-Guillaume Weather & Climate: Best Time to Visit

Average temperatures, rainfall, sunshine and the best time to visit Bois-Guillaume.

Current conditions Bois-Guillaume –  

Climate overview of Bois-Guillaume

Bois-Guillaume, Upper Normandy, France, experiences significant temperature variation throughout the year. Summers bring daytime highs of 24°C (75°F) in August, while winters cool to 8°C (46°F) in January.

Annual rain/snowfall is moderate at around 826 mm (33 in), with December being the wettest month. The city also has warm summers and cold winters. The sunniest month is June, with 6.8 hours of sunshine per day on average.

Bois-Guillaume Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Bois-Guillaume - and find the best time to visit.

Monthly Temperature in Bois-Guillaume

Depending on the time of the year, temperatures range from comfortable to chilly in Bois-Guillaume. Average daytime temperatures reach a comfortable 24°C (75°F) in August. In January, the coolest month of the year, temperatures drop to a chilly 8°C (46°F).

At night, temperatures range from around 14°C (57°F) in August to 2°C (36°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Rainfall in Bois-Guillaume

Generally, Bois-Guillaume has a moderate amount of precipitation, averaging 826 mm (33 in) of rain/snowfall annually. Despite minor fluctuations, Bois-Guillaume enjoys fairly consistent precipitation throughout the year. In December, you can expect around 85 mm (3.3 in) of precipitation, while in September, Bois-Guillaume receives about 57 mm (2.2 in). For more details, please visit our Bois-Guillaume Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

Sunshine Hours in Bois-Guillaume

Bois-Guillaume can be enjoyed more throughout the sunniest month of June under a blue sky, with approximately 6.8 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 1.7 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Data from: Rouen, France (3 KM, 2 Miles).

Daily hours of sunshine

Data from: Rouen, France (3 KM, 2 Miles).

Humidity in Bois-Guillaume by Month

Best Time to Visit Bois-Guillaume

The most comfortable overall weather for exploring Bois-Guillaume is usually found in June, July, August and September. Conditions are generally least comfortable in January, February and December.

Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.

  • Best overall: June, July, August and September
  • Warmest weather: July and August
  • Most sunshine: June, July and August
  • Fewest rainy days: June, July, August and September
  • Seasonal pattern: Warm summers and cold winters

Frequently asked questions about the climate in Bois-Guillaume

What is the best time to visit Bois-Guillaume?

June, July, August and September typically offer the most optimal weather in Bois-Guillaume. In contrast, January, February and December tend to have less optimal conditions. Bois-Guillaume has warm summers and cold winters.

What temperatures can I expect in Bois-Guillaume?

Daytime highs range from 8°C (46°F) in January to 24°C (75°F) in August. Nighttime lows range from 2°C (36°F) to 14°C (57°F). Temperatures vary considerably through the year.

How much rain does Bois-Guillaume get?

Annual rainfall is around 826 mm (33 in). December is the wettest month with 85 mm (3.3 in), while September is the driest with 57 mm (2.2 in).

How sunny is Bois-Guillaume?

Bois-Guillaume receives around 1,573 hours of sunshine per year. June is the sunniest month with 205 hours, while December is the cloudiest with just 51 hours.

Bois-Guillaume 3-Day Forecast

Bois-Guillaume on the map

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