May weather forecast and climate
Rennes, France

Weather in May

May, the last month of the spring, in Rennes, is a comfortable month, with average temperature ranging between max 17.4°C (63.3°F) and min 8°C (46.4°F).

Temperature

In May, the average high-temperature is practically the same as in April - an enjoyable 17.4°C (63.3°F). In May, in Rennes, the average low-temperature is 8°C (46.4°F).

Humidity

In Rennes, the average relative humidity in May is 83%.

Rainfall

In Rennes, during 15.3 rainfall days, 30mm (1.18") of precipitation is typically accumulated. In Rennes, during the entire year, the rain falls for 150.1 days and collects up to 330mm (12.99") of precipitation.

Snowfall

In Rennes snow does not fall through October.

Daylight

The average length of the day in May is 15.2h.

Sunshine

In Rennes, the average sunshine is 8.1h.

UV index

The average daily maximum UV index in Rennes is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from the exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 4 interpret into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
[Resources]

FAQ

What is the average humidity in May in Rennes?

The average relative humidity in May in Rennes, France, is 83%.

How much does it rain in Rennes in May?

In Rennes, during May, the rain falls for 15.3 days and regularly aggregates up to 30mm (1.18") of precipitation.

When it does not snow in Rennes?

In Rennes snow does not fall in May through October.

Does it snow in Rennes in May?

In May, in Rennes, France, it doesn't snow. April is the latest month when it typically snows.

What is the average length of the day in May in Rennes?

In May, the average length of the day in Rennes, France, is 15.2h.

How many hours of sunshine does Rennes have in May?

In Rennes, the average sunshine in May is 8.1h.

What is the UV index intensity in May in Rennes?

The average daily maximum UV index in May in Rennes, France, is 4. A UV Index estimate of 3 to 5 represents a moderate vulnerability from unsafe exposure to the Sun's UV rays.

Average temperature in May
Rennes, France

Average temperature in May - Rennes, France
  • Average high temperature in May: 17.4°C

The warmest month (with the highest average high temperature) is August (23.1°C).
The month with the lowest average high temperature is January (8.4°C).

  • Average low temperature in May: 8°C

The month with the highest average low temperature is July (12.8°C).
The coldest month (with the lowest average low temperature) is February (2.3°C).

[Resources]

Average pressure in May
Rennes, France

Average pressure in May - Rennes, France
  • Average pressure in May: 1017.3mbar

The month with the highest atmospheric pressure is December (1018.4mbar).
The month with the lowest atmospheric pressure is November (1012.9mbar).

[Resources]

Average wind speed in May
Rennes, France

Average wind speed in May - Rennes, France
  • Average wind speed in May: 13.2km/h

The windiest month (with the highest average wind speed) is February (17.6km/h).
The calmest month (with the lowest average wind speed) is August (11.7km/h).

[Resources]

Average humidity in May
Rennes, France

Average humidity in May - Rennes, France
  • Average humidity in May: 83%

The month with the highest relative humidity is December (88%).
Months with the lowest relative humidity are July, August and September (78%).

[Resources]

Average rainfall in May
Rennes, France

Average rainfall in May - Rennes, France
  • Average rainfall in May: 30mm

The wettest month (with the highest rainfall) is June (39mm).
The driest month (with the least rainfall) is September (12mm).

[Resources]

Average rainfall days in May
Rennes, France

Average rainfall days in May - Rennes, France
  • Average rainfall days in May: 15.3 days

The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is September (8.4 days).

[Resources]

Average snowfall in May
Rennes, France

Average snowfall in May - Rennes, France
  • Average snowfall in May: 0mm

Months with the highest snowfall are February, March, April and December (2mm).
Months with the least snowfall are May, June, July, August, September and October (0mm).

[Resources]

Average snowfall days in May
Rennes, France

Average snowfall days in May - Rennes, France
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is February (0.8 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

[Resources]

Average daylight in May /
Average sunshine in May
Rennes, France

Average daylight in May / Average sunshine in May - Rennes, France
  • Average daylight in May: 15.2h

The month with the longest days is June (Average daylight: 16h).
The month with the shortest days is December (Average daylight: 8.5h).

  • Average sunshine in May: 8.1h

The month with the most sunshine is July (Average sunshine: 9.7h).
The month with the least sunshine is January (Average sunshine: 4.2h).

[Resources]

Average sunshine days in May
Rennes, France

Average sunshine days in May - Rennes, France
  • Average sunshine days in May: 12.1 days

The month with the most sunshine days is September (18.5 days).
The month with the least sunshine days is May (12.1 days).

[Resources]

Average UV index in May
Rennes, France

Average UV index in May - Rennes, France
  • Average UV index in May: 4

Months with the highest UV index are June, July and August (UV index 5).
Months with the lowest UV index are January, February, November and December (UV index 2).

[Resources]

Average cloud cover in May
Rennes, France

Average cloud cover in May - Rennes, France
  • Average cloud cover in May: 48

The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is September (Cloud cover 41).

[Resources]

Average visibility in May
Rennes, France

Average visibility in May - Rennes, France
  • Average visibility in May: 8km

Months with the highest visibility are January, February, March, April, June, July, October, November and December (9km).
Months with the lowest visibility are May, August and September (8km).

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location