May weather forecastRiaillé, France
May
Weather in May
The last month of the spring, May, is a refreshing month in Riaillé, France, with an average temperature varying between 18.3°C (64.9°F) and 8.9°C (48°F).Temperature
May brings an average high-temperature of an enjoyable 18.3°C (64.9°F), nearly identical to the preceding month. In Riaillé, an average temperature of 8.9°C (48°F) is noted during May nights.Humidity
In May, the average relative humidity is 81%.Rainfall
In Riaillé, during May, the rain falls for 13.8 days and regularly aggregates up to 32mm (1.26") of precipitation. In Riaillé, during the entire year, the rain falls for 158.5 days and collects up to 472mm (18.58") of precipitation.Snowfall
March, May through October and December are months without snowfall in Riaillé.Daylight
In May, the average length of the day in Riaillé is 15h and 8min.On the first day of the month, sunrise is at 06:47 and sunset at 21:17. On the last day of May, sunrise is at 06:12 and sunset at 21:53 CEST.
Sunshine
In Riaillé, the average sunshine in May is 8.7h.UV index
In May, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: In May, the UV index of 4 transforms into the following advice:
Take precautions - Protection against sunburn is recommended. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Riaillé, France
- Average high temperature in May: 18.3°C
The warmest month (with the highest average high temperature) is August (24.3°C).
The month with the lowest average high temperature is January (8.9°C).
- Average low temperature in May: 8.9°C
The months with the highest average low temperature are July and August (14°C).
The coldest month (with the lowest average low temperature) is February (2.9°C).
Average pressure in May
Riaillé, France
- Average pressure in May: 1017.2mbar
The month with the highest atmospheric pressure is December (1019.2mbar).
The month with the lowest atmospheric pressure is November (1013.5mbar).
Average wind speed in May
Riaillé, France
- Average wind speed in May: 13.6km/h
The windiest month (with the highest average wind speed) is February (18km/h).
The calmest month (with the lowest average wind speed) is August (11.8km/h).
Average humidity in May
Riaillé, France
- Average humidity in May: 81%
The months with the highest relative humidity are January and December (86%).
The months with the lowest relative humidity are August and September (74%).
Average rainfall in May
Riaillé, France
- Average rainfall in May: 32mm
The wettest month (with the highest rainfall) is December (66mm).
The driest month (with the least rainfall) is September (21mm).
Average rainfall days in May
Riaillé, France
- Average rainfall days in May: 13.8 days
The month with the highest number of rainy days is January (16.3 days).
The month with the least rainy days is September (8.2 days).
Average snowfall in May
Riaillé, France
- Average snowfall in May: 0mm
The month with the highest snowfall is January (2mm).
The months with the least snowfall are March, May, June, July, August, September, October and December (0mm).
Average snowfall days in May
Riaillé, France
- Average snowfall days in May: 0 days
The months with the highest number of snowfall days are January and February (0.5 days).
The months with the least snowfall days are March, May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Riaillé, France
- Average daylight in May: 15h and 6min
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 May: 8h and 42min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in May
Riaillé, France
- Average sunshine days in May: 15.3 days
The month with the most sunshine days is September (20.2 days).
The month with the least sunshine days is November (11.6 days).
Average UV index in May
Riaillé, France
- Average UV index in May: 4
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, November and December (UV index 2).
Average cloud cover in May
Riaillé, France
- Average cloud cover in May: 43
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is September (Cloud cover 34).
Average visibility in May
Riaillé, France
- Average visibility in May: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
