Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
May
Weather in May
Temperature
Challans marks the onset of May with an average high-temperature of a comfortable 16.8°C (62.2°F), subtly divergent from April's 14.3°C (57.7°F). During the nights in May, Challans experiences a consistent average temperature of 11.4°C (52.5°F).Humidity
In May, the average relative humidity in Challans is 79%.Rainfall
In Challans, during May, the rain falls for 13.9 days and regularly aggregates up to 39mm (1.54") of precipitation. Throughout the year, in Challans, there are 176.3 rainfall days, and 575mm (22.64") of precipitation is accumulated.Snowfall
January through November are months without snowfall in Challans.Daylight
The average length of the day in May in Challans is 15h and 4min.On the first day of the month, sunrise is at 06:51 and sunset at 21:17. On the last day of May, sunrise is at 06:17 and sunset at 21:53 CEST.
Sunshine
The average sunshine in May in Challans is 9.3h.UV index
The months with the highest UV index are May through September, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The daily maximum UV index of 5 in May interprets into the following advice:
Heed the precautions - Suggestions to avoid sunburn are made. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures in Challans?
What is the average humidity in May in Challans?
How many days does it rain in May in Challans?
When it does not snow in Challans?
What is the average length of the day in May in Challans?
When are sunrise and sunset in May in Challans?
How long on average sun shines in May in Challans?
What are the months with the highest UV index in Challans?
How high is the UV index in May in Challans?
Average temperature in May
Challans, France
- Average high temperature in May: 16.8°C
The warmest month (with the highest average high temperature) is July (22.2°C).
The months with the lowest average high temperature are January and February (9.9°C).
- Average low temperature in May: 11.4°C
The month with the highest average low temperature is August (16.8°C).
The coldest month (with the lowest average low temperature) is February (5.8°C).
Average pressure in May
Challans, France
- Average pressure in May: 1017.2mbar
The month with the highest atmospheric pressure is December (1019.6mbar).
The month with the lowest atmospheric pressure is November (1013.8mbar).
Average wind speed in May
Challans, France
- Average wind speed in May: 18.1km/h
The windiest month (with the highest average wind speed) is December (24.2km/h).
The calmest month (with the lowest average wind speed) is August (15.8km/h).
Average humidity in May
Challans, France
- Average humidity in May: 79%
The months with the highest relative humidity are January and December (81%).
The month with the lowest relative humidity is September (73%).
Average rainfall in May
Challans, France
- Average rainfall in May: 39mm
The wettest month (with the highest rainfall) is November (83mm).
The driest month (with the least rainfall) is September (29mm).
Average rainfall days in May
Challans, France
- Average rainfall days in May: 13.9 days
The month with the highest number of rainy days is January (19.3 days).
The month with the least rainy days is September (10.4 days).
Average snowfall in May
Challans, France
- Average snowfall in May: 0mm
The month with the highest snowfall is December (1mm).
The months with the least snowfall are January, February, March, April, May, June, July, August, September, October and November (0mm).
Average snowfall days in May
Challans, France
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight in May /
Average sunshine in May
Challans, France
- Average daylight in May: 15h and 1min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in May: 9h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The months with the least sunshine are January and December (Average sunshine: 4h and 36min).
Average sunshine days in May
Challans, France
- Average sunshine days in May: 13.8 days
The month with the most sunshine days is September (17.7 days).
The month with the least sunshine days is January (9.2 days).
Average UV index in May
Challans, France
- Average UV index in May: 5
The months with the highest UV index are May, June, July, August and September (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
Challans, France
- Average cloud cover in May: 39
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is September (Cloud cover 31).
Average visibility in May
Challans, 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).
