Lillebonne Weather & Climate: Best Time to Visit

Average temperatures, rainfall, sunshine and the best time to visit Lillebonne.

Current conditions Lillebonne –  

Climate overview of Lillebonne

Temperatures in Lillebonne, Upper Normandy, France, vary greatly throughout the year. August is the hottest month at 23°C (73°F), while January is the coldest at 9°C (48°F).

Annual rain/snowfall is moderate at around 915 mm (36 in), with December being the wettest month. The city also has warm summers and cold winters. Sunshine peaks in July, when the city sees around 8.0 hours of sunshine per day.

Lillebonne Weather by Month

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

Monthly Temperature in Lillebonne

The climate in Lillebonne is known for significant temperature differences throughout the year, making the weather dynamic. Average daytime temperatures reach a comfortable 23°C (73°F) in August. In January, the coolest month of the year, temperatures drop to a chilly 9°C (48°F).

At night, temperatures range from around 14°C (57°F) in August to 3°C (37°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Rainfall in Lillebonne

Generally, Lillebonne receives mid-range precipitation levels, with 915 mm (36 in) annually. Despite minor fluctuations, Lillebonne enjoys fairly consistent precipitation throughout the year. In December, you can expect around 97 mm (3.8 in) of precipitation, while in July, Lillebonne receives about 68 mm (2.7 in). For more details, please visit our Lillebonne Precipitation page.

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

Sunshine Hours in Lillebonne

Lillebonne can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 8.0 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 2.0 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Data from: Le Havre, France (30 KM, 19 Miles).

Daily hours of sunshine

Data from: Le Havre, France (30 KM, 19 Miles).

Humidity in Lillebonne by Month

Best Time to Visit Lillebonne

For comfortable weather, consider visiting Lillebonne in June, July, August and September. Conditions are usually least favourable 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 and July
  • Fewest rainy days: June, July, August and September
  • Seasonal pattern: Warm summers and cold winters

Frequently asked questions about the climate in Lillebonne

What is the best time to visit Lillebonne?

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

What temperatures can I expect in Lillebonne?

Daytime highs range from 9°C (48°F) in January to 23°C (73°F) in August. Nighttime lows range from 3°C (37°F) to 14°C (57°F). Temperatures vary considerably through the year.

How much rain does Lillebonne get?

Annual rainfall is around 915 mm (36 in). December is the wettest month with 97 mm (3.8 in), while July is the driest with 68 mm (2.7 in).

How sunny is Lillebonne?

Lillebonne receives around 1,807 hours of sunshine per year. July is the sunniest month with 240 hours, while December is the cloudiest with just 59 hours.

Lillebonne 3-Day Forecast

Lillebonne on the map

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