Average weather for Boulogne-sur-Mer in August
It's pleasantly warm in August in Boulogne-sur-Mer with an average temperature of 21°C. Temperatures this month range from a low of 20°C to a high of 23°C. At night, you can expect temperatures between 15°C and 17°C.
Start of August
The month of August starts in Boulogne-sur-Mer with warm temps, averaging around 22°C during the day and nights around 17°C. A few showers might pop up early in the month, but overall, it’ll stay mostly sunny and dry.
Mid August
By mid-August, daytime temps drop to around 21°C, with nights around 17°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too. A shirt, maybe a light sweater, and thin pants will do.
End of August
By the end of August, the average daytime temperature in Boulogne-sur-Mer is around 22°C, while nighttime temps are about 16°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days.
In August, there is an average of 73 mm of precipitation, spread over 10 days. The wind speed is around 4 Bft, mostly coming from the South.
Boulogne-sur-Mer in August |
New York | ||
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21°C | 30°C | |
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23°C | 31°C | |
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20°C | -5°C | |
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73 mm | 79 mm | |
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10 days | 13 days |
UV index
The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is August a good time to visit Boulogne-sur-Mer?
Looking for great weather? August is a good time to be in Boulogne-sur-Mer. The temperatures are nice, and there’s not too much rain.
Temperature records
With 33°C in 2020, Boulogne-sur-Mer reached the highest temperature in August over the past 10 years. The lowest daytime temperature in this month was 16°C in 2014. The extreme nighttime temperatures ranged from a lowest recorded value of 10°C to a highest value of 26°C.
Check out the climate of Boulogne-sur-Mer for all months and discover the best travel time
Curious about the weather in other parts of France? Check out the climate and weather for spots like Paris, Côte d'Azur, Bretagne, or explore other destinations in France.
Daily Temperature in August in Boulogne-sur-Mer
This chart shows the average daily high and low temperatures in August for Boulogne-sur-Mer, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in August in Boulogne-sur-Mer
The chart below shows the average daily precipitation in August for Boulogne-sur-Mer, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for August, you can expect about 10 days of precipitation in Boulogne-sur-Mer.
Daily UV index in August in Boulogne-sur-Mer
This chart shows the average daily UV index in August in Boulogne-sur-Mer, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in August in Boulogne-sur-Mer over the years
This chart shows the average temperature in August in Boulogne-sur-Mer, measured in degrees Celsius, over the past few years.
Total precipitation in August in Boulogne-sur-Mer over the years
This chart shows the average precipitation in August in Boulogne-sur-Mer, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in August for Boulogne-sur-Mer
Click on any day in August to get detailed info about the usual weather on that day in Boulogne-sur-Mer. Check out the historical temperatures and precipitation over the past 10 years on this day.































Weather experiences in August 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.
Or check out the climate of Boulogne-sur-Mer for all months at once