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Rennes in August: Weather, Average temperature and Climate

Planning a trip and want to know what the weather in Rennes in August will be like? Take a look at our weather guide for Rennes, based on historical data.
Check flight prices to Rennes on Avionero:
August

Weather in Rennes in August 2024

Good Weather
Warm
☁️
Cloudy
Planning a trip to Rennes in August? You are in luck! The weather is generally good, with an average maximum temperature of +73°F and approximately 8 sunny days. Just be prepared for some rain, as there are usually around 5 rainy days and 42 mm of precipitation. Expect good weather and pack accordingly to enjoy the outdoors. Search flights in one click on Avionero.
Good to know:
  • August is usually the hottest month of the year in Rennes;

Average weather

☀️
+73°F
Avg. max. temperature
+43°F
Min.
+100°F
Max.
42 mm
Total precipitation
74%
Avg. humidity
2 m/s
Avg. wind
8 ☀️
Sunny Days
18 ⛅️
Cloudy
5 🌦
Rainy
Our opinion: Rennes has good weather in August.

Average temperature in Rennes in August

Here are the expected maximum, average and minimum temperatures in Rennes for August based on the historical data.
Last Year
Historical Data

Going from a maximum of +97°F during the day to a minimum of +48°F during the night, the temperature in August averages around +81°F.

The average maximum temperature goes up 7% by the end of the month, compared with the beginning of the month, from +79°F to +82°F.

Is Rennes warm or cold in August?

Rennes is typically warm in August.

Maximum temperatures go down compared to the previous month from +73°F to +73°F. The minimum temperature also goes down from +57°F to +55°F.

It’s generally warm, but pack a long-sleeve shirt for evenings.

August is the hottest month in Rennes, here is the comparison with other months:

Climate in Rennes in August

Rennes weather looks like this, on average, in August and the surrounding months.
JulyAugustSeptember
Avg. temperature
+73°F+73°F+70°F
Min. temperature
+45°F+43°F+37°F
Max. temperature
+104°F+100°F+93°F
Rainfall
48 mm42 mm44 mm
Wind
2 m/s2 m/s2 m/s
Humidity
72%74%76%
Air pressure
1016 HPa1015 HPa1016 HPa
Sunny days
989
Cloudy days
171816
Rainy days
555
Snowy days
000

August weather is still as good as in July. The temperature levels stay the same in the area of +73°F for average maximum temperature during the day. As August arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 48 mm to 42 mm. Humidity rises from 72% to 74%. The average wind speed doesn’t change much during August, staying around 2 m/s. The days becoming less sunny, going from 9 sunny days in July to 8 in August.

September brings much the same weather, it remains good.

Wind

Wind speed in Rennes in August based on historical data.
Last Year
Historical Data

The average wind speed is 3 m/s getting up to 4 m/s which is a light breeze; barely moving the tree leaves.

The average wind speed in Rennes is gradually increasing during August, going from 2 m/s to 3 m/s over the course of the month.

Rain

Amount of rainfall in mm during August in Rennes based on historical data.
Last Year
Historical Data
Typically, there is a 32% chance of rain on an average day in August, with total rainfall of approximately 46 mm. The maximum amount of rainfall per day is around 23 mm, which is considered light rain. August is a pretty wet month with over 10 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of wellies.
Here’s how August is compared with other months in the amount of precipitation, total mm:
Rennes wettest month is May, where a typical day has a 26% chance of precipitation and 67 mm of rainfall per day. August, on the other hand, is the driest month with a mere 16% chance of precipitation and 42 mm of rainfall per day.

How was the weather last August in Rennes?

This is the weather in Rennes in August 2023:
1 August
☀️
+79°F
2 August
☀️
+89°F
3 August
☀️
+90°F
4 August
☁️
+78°F
5 August
☀️
+76°F
6 August
☀️
+79°F
7 August
☀️
+83°F
8 August
☀️
+86°F
9 August
☀️
+88°F
10 August
☀️
+94°F
11 August
☀️
+94°F
12 August
☀️
+95°F
13 August
☀️
+97°F
14 August
🌧️
+71°F
15 August
☁️
+78°F
16 August
🌧️
+79°F
17 August
🌧️
+75°F
18 August
☁️
+77°F
19 August
🌧️
+71°F
20 August
☀️
+77°F
21 August
☁️
+68°F
22 August
☁️
+77°F
23 August
☁️
+77°F
24 August
☀️
+85°F
25 August
☁️
+76°F
26 August
☀️
+75°F
27 August
☀️
+80°F
28 August
☀️
+80°F
29 August
☀️
+85°F
30 August
☀️
+85°F
31 August
☀️
+83°F
In August 2023 Rennes had 20 sunny days, 7 cloudy days, and 4 rainy days. The average maximum temperature was +81°F, with an absolute maximum of +97°F and a minimum of +68°F. The average humidity was 67%, with a maximum of 99% and a minimum of 14%. The average wind speed was 3 m/s, with a maximum of 8 m/s and a minimum of 0 m/s.
Are you planning a trip in August?

Climate Change Over the Years

This is how Rennes climate has changed over the last 43 years.

The climate in Rennes in August has not changed that much over the last 43 years.

The average temperature was the lowest in 1986 (+69°F) and the highest in 2003 (+84°F). The driest year was 1990 with only 5 mm of rainfall, and the wettest year was 2011 with 104 mm.

FAQ

Frequently asked questions about the weather in Rennes in August:

Is August a good time to visit Rennes?

August is a really good time to go to Rennes. The weather is nice so plan your packing around outdoor activities and exploring. Check out other good time to visit Rennes.

Can you sunbathe in Rennes in August?

August is warm in Rennes. You may enjoy some beach or pool time in the day, but pack something a tad warmer for the evening.

Is Rennes rainy in August?

Rennes is usually dry in August. Plan your packing around outdoor activities and exploring.

Is it sunny in Rennes in August?

Usually, it’s not very sunny in Rennes in August, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.

Other cities in France

Check out the weather for other cities in France.

Monthly weather in Rennes

Source of the data

For this page, we’ve looked at the typical weather in Rennes, based on historical hourly weather data from January 1, 1979, to December 31, 2022.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.