August weather forecastVannes, France
August
Weather in August
August, the last month of the summer in Vannes, is another pleasant month, with an average temperature fluctuating between 15°C (59°F) and 21.2°C (70.2°F).Temperature
Vannes commences August with an average high-temperature of a still pleasant 21.2°C (70.2°F), maintaining a close resemblance to the previous month. Nighttime temperatures in Vannes, France, consistently average a refreshing 15°C (59°F) during August.Humidity
The months with the lowest humidity in Vannes are August and September, with an average relative humidity of 78%.Rainfall
In Vannes, during August, the rain falls for 13 days and regularly aggregates up to 36mm (1.42") of precipitation. Throughout the year, in Vannes, there are 169.8 rainfall days, and 593mm (23.35") of precipitation is accumulated.Snowfall
In Vannes, France, snow does not fall in January, March, May through November.Sea temperature
July and August, with an average sea temperature of 18°C (64.4°F), are months with the warmest seawater.Note: For most, swimming in 18°C (64.4°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).
Daylight
The average length of the day in August is 14h and 14min.On the first day of the month, sunrise is at 06:49 and sunset at 21:45. On the last day of August, sunrise is at 07:28 and sunset at 20:53 CEST.
Sunshine
In August, the average sunshine in Vannes is 8.7h.UV index
June through August, with an average maximum UV index of 5, are months with the highest UV index in Vannes. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: A maximum high daily UV index of 5 during August translates into the following directions:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Vannes, France
- Average high temperature in August: 21.2°C
The warmest month (with the highest average high temperature) is July (21.3°C).
The month with the lowest average high temperature is January (9.3°C).
- Average low temperature in August: 15°C
The month with the highest average low temperature is August (15°C).
The coldest month (with the lowest average low temperature) is February (5.3°C).
Average pressure in August
Vannes, France
- Average pressure in August: 1017.4mbar
The month with the highest atmospheric pressure is December (1018.6mbar).
The month with the lowest atmospheric pressure is November (1013mbar).
Average wind speed in August
Vannes, France
- Average wind speed in August: 15.5km/h
The windiest month (with the highest average wind speed) is December (22.9km/h).
The calmest month (with the lowest average wind speed) is August (15.5km/h).
Average humidity in August
Vannes, France
- Average humidity in August: 78%
The months with the highest relative humidity are January and December (83%).
The months with the lowest relative humidity are August and September (78%).
Average rainfall in August
Vannes, France
- Average rainfall in August: 36mm
The wettest month (with the highest rainfall) is November (81mm).
The driest month (with the least rainfall) is September (24mm).
Average rainfall days in August
Vannes, France
- Average rainfall days in August: 13 days
The month with the highest number of rainy days is January (17.7 days).
The month with the least rainy days is September (10 days).
Average snowfall in August
Vannes, France
- Average snowfall in August: 0mm
The months with the highest snowfall are February, April and December (1mm).
The months with the least snowfall are January, March, May, June, July, August, September, October and November (0mm).
Average snowfall days in August
Vannes, France
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (0.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in August
Vannes, France
- Average sea temperature in August: 18°C
The best months for swimming (with the highest average sea temperature) are July and August (18°C).
The coldest months (with the lowest average sea temperature) are February and March (10°C).
Average daylight in August /
Average sunshine in August
Vannes, France
- Average daylight in August: 14h and 12min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in August: 8h and 42min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in August
Vannes, France
- Average sunshine days in August: 15 days
The month with the most sunshine days is September (18.1 days).
The month with the least sunshine days is November (10.4 days).
Average UV index in August
Vannes, France
- Average UV index in August: 5
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, April, November and December (UV index 3).
Average cloud cover in August
Vannes, France
- Average cloud cover in August: 35
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is September (Cloud cover 33).
Average visibility in August
Vannes, France
- Average visibility in August: 10km
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is January (9km).
