August weather forecastBrest, France

August

Weather in August

August, the last month of the summer in Brest, is another pleasant month, with an average temperature varying between 13.2°C (55.8°F) and 20.8°C (69.4°F).

Temperature

The highest temperatures are recorded in August, with averages reaching a high of 20.8°C (69.4°F) and a low of 13.2°C (55.8°F).

Humidity

In Brest, the average relative humidity in August is 83%.

Rainfall

In Brest, in August, during 9.6 rainfall days, 67mm (2.64") of precipitation is typically accumulated. In Brest, during the entire year, the rain falls for 159 days and collects up to 1210mm (47.64") of precipitation.

Snowfall

In Brest, snow does not fall in June through October.

Sea temperature

August is the month with the warmest seawater, with an average sea temperature of 16.9°C (62.4°F).
Note: For the majority, swimming in 16.9°C (62.4°F) does not offer a pleasant experience. Below 21°C (69.8°F), the difficulty in controlling breathing escalates.

Daylight

In August, the average length of the day is 14h and 17min.
On the first day of the month, sunrise is at 06:53 and sunset at 21:54. On the last day of August, sunrise is at 07:34 and sunset at 21:01 CEST.

Sunshine

In Brest, the average sunshine in August is 5.6h.

UV index

The average daily maximum UV index in August in Brest is 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the average person.
Note: The UV index of 6 during August leads to these advisories:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. During bright days, sunglasses that offer UVA and UVB defense are recommended.

Updated: Feb 8, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

With average high temperatures of 20.8°C (69.4°F) and lows of 13.2°C (55.8°F), August is the warmest month.

In Brest, in August, the average high-temperature is 20.8°C (69.4°F), and the average low-temperature is 13.2°C (55.8°F).

The average relative humidity in August in Brest, France, is 83%.

In Brest, during August, the rain falls for 9.6 days and regularly aggregates up to 67mm (2.64") of precipitation.

June through October are months without snowfall.

With an average sea temperature of 16.9°C (62.4°F), August is the month with the warmest seawater in Brest.

In Brest, the average seawater temperature in August is 16.9°C (62.4°F). For swimming, a surface water temperature of 16.9°C (62.4°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

In August, the average day length in Brest is 14h and 17min.

In August, on the first day of the month, sunrise is at 06:53 and sunset at 21:54. On the last day of the month, in Brest, France, sunrise is at 07:34 and sunset at 21:01 CEST.

In August, the average sunshine duration in Brest, France, is 5.6h.

In August, the average daily maximum UV index in Brest is 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J August S O N D

Jul

August

Sep

Average high temperature

20.7°C

20.8°C

19.1°C

Average low temperature

Average humidity

Average rainfall

Average rainfall days

10.4

9.6

10.1

Average snowfall days

Average sea temperature

Average daylight

Average sunshine

Average UV index

Average temperature in August
Brest, France

Average high temperature in August: 20.8°C

The warmest month (with the highest average high temperature) is August (20.8°C).
The month with the lowest average high temperature is January (9.3°C).

Average low temperature in August: 13.2°C

The months with the highest average low temperature are July and August (13.2°C).
The coldest month (with the lowest average low temperature) is February (4.1°C).

Average humidity in August
Brest, France

Average humidity in August: 83%

The months with the highest relative humidity are January, October and December (86%).
The months with the lowest relative humidity are April and May (81%).

Average rainfall in August
Brest, France

Average rainfall in August: 66.8mm

The wettest month (with the highest rainfall) is December (147.8mm).
The driest month (with the least rainfall) is June (59.8mm).

Average rainfall days in August
Brest, France

Average rainfall days in August: 9.6 days

The month with the highest number of rainy days is January (17.7 days).
The month with the least rainy days is June (8.6 days).

Average snowfall days in August
Brest, France

Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (2.5 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

Average sea temperature in August
Brest, France

Average sea temperature in August: 16.9°C

The best month for swimming (with the highest average sea temperature) is August (16.9°C).
The coldest month (with the lowest average sea temperature) is March (10.2°C).

Average daylight in August /
Average sunshine in August
Brest, France

Average daylight in August: 14h and 18min

The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).

Average sunshine in August: 5h and 36min

The month with the most sunshine is June (Average sunshine: 6h and 24min).
The month with the least sunshine is January (Average sunshine: 2h and 0min).

Average UV index in August
Brest, France

Average UV index in August: 6

The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, November and December (UV index 1).