What’s the climate like in Boulogne-sur-Mer?
The current climate of Boulogne-sur-Mer features average monthly temperatures ranging from highs of 21°C during the day to lows of 8°C. The average yearly temperature is around 15°C. At night, temperatures in the colder months average around 4°C and in the warmer months around 16°C.
The highest temperature recorded in Boulogne-sur-Mer in recent years was 40°C in July 2022. The lowest daytime temperature recorded was -3°C in February 2018.
On average, Boulogne-sur-Mer gets 771 mm of precipitation each year. Of this, about 4,8 cm is snowfall. For comparison, London gets 701 mm of precipitation each year.
Curious about the climate in other parts of France? Check out the weather and climate in places like Paris, Côte d'Azur, or have a look at other destinations in France.
Best time to visit Boulogne-sur-Mer?
The best time to visit Boulogne-sur-Mer for sunny weather is June through September. During this period, you'll have good temperatures and not too much rain, making it a great time to visit Boulogne-sur-Mer. In the other months of the year, there's too much rain or the temperature isn't ideal for a visit if you want sunny and pleasant weather.
Climate Table of Boulogne-sur-Mer
The climate table of Boulogne-sur-Mer shows the average temperatures, precipitation, snow, and UV index per month. The table gives an overview of the average day and night temperatures in degrees Celsius, the total amount of precipitation in millimetres, the total snowfall in centimetres, and the UV index for each month. Precipitation is always measured as water, even if it's snow or hail.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
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| Temp. max (°C) | 8 | 9 | 11 | 13 | 16 | 20 | 21 | 21 | 20 | 16 | 12 | 10 |
| Temp. min (°C) | 4 | 5 | 6 | 8 | 10 | 14 | 16 | 16 | 14 | 12 | 8 | 6 |
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| Precipitation (mm) | 87 | 65 | 40 | 30 | 41 | 35 | 42 | 73 | 61 | 99 | 112 | 86 |
| Snow (cm) | 0,5 | 2,1 | 0,9 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1,3 |
| UV Index | 2 | 3 | 5 | 6 | 7 | 7 | 7 | 7 | 6 | 4 | 2 | 1 |
Click on the month name to see more weather details, like daily averages, temperatures, and precipitation for the past years in that month.
- Average yearly temperature: 15°C
- Highest temperature: 21°C in July and August
- Lowest temperature: 8°C in January
- Precipitation*: 771 mm per year, averaging 64 mm per month
- Snowfall: 4,8 cm per year
- Driest months: 30 mm in April, 35 mm in June and 40 mm in March
- Wettest months: 112 mm in November, 99 mm in October and 87 mm in January
*Precipitation is measured as a combination of rain, snow, and hail
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Table of Contents
Average Temperature per Month in Boulogne-sur-Mer
This graph shows the average maximum temperatures per month in Boulogne-sur-Mer, France. The temperatures are shown in degrees Celsius and the average is calculated based on the recorded temperatures per month from past years.
Average Precipitation per Month in Boulogne-sur-Mer
This graph shows how much precipitation Boulogne-sur-Mer, France, gets on average per month. Precipitation is always measured as water, even if it's snow or hail. This makes it easy to compare how much has fallen, regardless of the form of precipitation. The amount of precipitation is measured in millimetres and the average is calculated based on the recorded precipitation per month from past years.
Average Snowfall per Month in Boulogne-sur-Mer
This graph shows how much snow Boulogne-sur-Mer, France, gets on average per month. The amount of snowfall is measured in centimetres and the average is calculated based on the recorded snowfall per month from past years.
Average UV Index per Month in Boulogne-sur-Mer
This graph shows the average UV index per month in Boulogne-sur-Mer, France. The UV index indicates the intensity of ultraviolet radiation and ranges from 0 to a maximum of 11.
Yearly Temperature in Boulogne-sur-Mer
This graph shows the average yearly temperature in Boulogne-sur-Mer, France. The yearly temperature, expressed in degrees Celsius, is the average of all twelve monthly temperatures summed up for that year.
Total Yearly Precipitation in Boulogne-sur-Mer
This chart shows the total yearly precipitation in Boulogne-sur-Mer, France, over the past few years. The total yearly precipitation, measured in millimetres, is the sum of all the rain that fell in the twelve months of that year.
Total Yearly Snowfall in Boulogne-sur-Mer
This chart shows the total yearly snowfall in Boulogne-sur-Mer, France, over the past few years. The total yearly snowfall, measured in centimetres, is the sum of all the snow that fell in the twelve months of that year.
Weather experiences in Boulogne-sur-Mer
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Average Weather in Boulogne-sur-Mer by Month
Click on a month below to see detailed weather info for Boulogne-sur-Mer. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
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