Weather in Rennes in May 2025
Average weather
Average temperature in Rennes in May
The expected average maximum temperature in May is +19°C with a maximum of +25°C and a minimum of +5°C.
The average maximum temperature goes up 40% by the end of the month, compared with the beginning of the month, from +16°C to +24°C.
Is Rennes warm or cold in May?
Rennes is typically mild in May.
Maximum temperatures go up compared to the previous month from +15°C to +18°C. The minimum temperature also goes up from +6°C to +9°C.
Pack a light jacket as it will be warm in the day and cool in the evenings.
Take a look at how May is compared to other months in Rennes:
Climate in Rennes in May
| April | May | June | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +15°C | +18°C | +21°C | ||||
| Min. temperature | ||||||
| -2°C | -1°C | +3°C | ||||
| Max. temperature | ||||||
| +27°C | +30°C | +38°C | ||||
| Rainfall | ||||||
| 52 mm | 67 mm | 55 mm | ||||
| Wind | ||||||
| 3 m/s | 3 m/s | 2 m/s | ||||
| Humidity | ||||||
| 75% | 74% | 74% | ||||
| Air pressure | ||||||
| 1014 HPa | 1015 HPa | 1016 HPa | ||||
| Sunny days | ||||||
| 6 | 6 | 7 | ||||
| Cloudy days | ||||||
| 7 | 7 | 7 | ||||
| Rainy days | ||||||
| 16 | 16 | 15 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
May often has better weather than April. It’s getting warmer as May arrives. The average maximum temperature goes up from +15°C to +18°C during the day. Prepare for more rain. Average rainfall goes from 52 mm to 67 mm. It feels drier, as humidity decreases from 75% to 74%. The average wind speed doesn’t change much during May, staying around 3 m/s. The amount of sunny days stay about the same, averaging 6 sunny days during the month.
June brings much the same weather, it remains good.
Wind
The average wind speed is 3 m/s getting up to 5 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Rennes is gradually increasing during May, going from 3 m/s to 4 m/s over the course of the month.
Rain
How was the weather last May in Rennes?
Climate Change over Years
The climate in Rennes in May has not changed much over the last 43 years.
The average temperature was the lowest in 1986 (+14°C) and the highest in 2022 (+18°C). The driest year was 1996 with only 390 mm of rainfall, and the wettest year was 2000 with 878 mm.
FAQ
Is May a good time to visit Rennes?
Can you sunbathe in Rennes in May?
Is Rennes rainy in May?
Is it sunny in Rennes in May?
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, 2023.
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.