May weather forecastVannes, France
May
Weather in May
The last month of the spring, May, is an enjoyable month in Vannes, France, with an average temperature varying between 16.3°C (61.3°F) and 10.2°C (50.4°F).Temperature
Vannes, France, indicates an average high-temperature of a still refreshing 16.3°C (61.3°F) in May, showing minor variation from April's 13.8°C (56.8°F). Vannes records an average low of 10.2°C (50.4°F) throughout the nights in May.Humidity
The average relative humidity in May in Vannes is 80%.Rainfall
In Vannes, France, in May, during 14.1 rainfall days, 36mm (1.42") of precipitation is typically accumulated. Throughout the year, there are 169.8 rainfall days, and 593mm (23.35") of precipitation is accumulated.Snowfall
In Vannes, snow does not fall in January, March, May through November.Sea temperature
In Vannes, in May, the average water temperature is 13°C (55.4°F).Note: It is advised against swimming in 13°C (55.4°F) when it drops below 10°C (50°F). Such temperatures can cause extreme cold shock, leading to hyperventilation.
Daylight
In Vannes, the average length of the day in May is 15h and 9min.On the first day of May in Vannes, sunrise is at 06:52 and sunset at 21:23. On the last day of the month, sunrise is at 06:17 and sunset at 22:00 CEST.
Sunshine
The average sunshine in May is 9.1h.UV index
In May, the average daily maximum UV index in Vannes is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index of 4 in May interprets into the following recommendations:
Be vigilant - A duty to shield skin and eyes from injury exists. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Vannes, France
- Average high temperature in May: 16.3°C
The warmest month (with the highest average high temperature) is July (21.3°C).
The month with the lowest average high temperature is January (9.3°C).
- Average low temperature in May: 10.2°C
The month with the highest average low temperature is August (15°C).
The coldest month (with the lowest average low temperature) is February (5.3°C).
Average pressure in May
Vannes, France
- Average pressure in May: 1017.4mbar
The month with the highest atmospheric pressure is December (1018.6mbar).
The month with the lowest atmospheric pressure is November (1013mbar).
Average wind speed in May
Vannes, France
- Average wind speed in May: 16.7km/h
The windiest month (with the highest average wind speed) is December (22.9km/h).
The calmest month (with the lowest average wind speed) is August (15.5km/h).
Average humidity in May
Vannes, France
- Average humidity in May: 80%
The months with the highest relative humidity are January and December (83%).
The months with the lowest relative humidity are August and September (78%).
Average rainfall in May
Vannes, France
- Average rainfall in May: 36mm
The wettest month (with the highest rainfall) is November (81mm).
The driest month (with the least rainfall) is September (24mm).
Average rainfall days in May
Vannes, France
- Average rainfall days in May: 14.1 days
The month with the highest number of rainy days is January (17.7 days).
The month with the least rainy days is September (10 days).
Average snowfall in May
Vannes, France
- Average snowfall in May: 0mm
The months with the highest snowfall are February, April and December (1mm).
The months with the least snowfall are January, March, May, June, July, August, September, October and November (0mm).
Average snowfall days in May
Vannes, France
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (0.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in May
Vannes, France
- Average sea temperature in May: 13°C
The best months for swimming (with the highest average sea temperature) are July and August (18°C).
The coldest months (with the lowest average sea temperature) are February and March (10°C).
Average daylight in May /
Average sunshine in May
Vannes, France
- Average daylight in May: 15h and 12min
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: 9h and 6min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in May
Vannes, France
- Average sunshine days in May: 14.3 days
The month with the most sunshine days is September (18.1 days).
The month with the least sunshine days is November (10.4 days).
Average UV index in May
Vannes, 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, March, April, November and December (UV index 3).
Average cloud cover in May
Vannes, France
- Average cloud cover in May: 40
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is September (Cloud cover 33).
Average visibility in May
Vannes, France
- Average visibility in May: 10km
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is January (9km).
