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
Weather in May
Temperature
May's arrival registers an average high-temperature of a still mild 15.5°C (59.9°F), closely aligning with the temperature of the previous month. During May, the average low-temperature in Grande-Synthe is a frosty 9.6°C (49.3°F).Humidity
In Grande-Synthe, the average relative humidity in May is 77%.Rainfall
In May, in Grande-Synthe, the rain falls for 14.3 days. Throughout May, 29mm (1.14") of precipitation is accumulated. In Grande-Synthe, during the entire year, the rain falls for 185 days and collects up to 507mm (19.96") of precipitation.Snowfall
April through October are months without snowfall in Grande-Synthe, France.Daylight
In May, the average length of the day is 15h and 34min.On the first day of the month, sunrise is at 06:22 and sunset at 21:12. On the last day of May, sunrise is at 05:41 and sunset at 21:55 CEST.
Sunshine
The average sunshine in May in Grande-Synthe, France, is 8.8h.UV index
The average daily maximum UV index in May in Grande-Synthe is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index, 4 in May, converts into the following recommendations:
Be vigilant - Suggestions to stave off sun damage are provided. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May in Grande-Synthe?
What is the average humidity in May in Grande-Synthe?
How many days does it rain in May in Grande-Synthe?
When it does not snow in Grande-Synthe?
How many hours of daylight does Grande-Synthe have in May?
When are sunrise and sunset in May in Grande-Synthe?
How many hours of sunshine does Grande-Synthe have in May?
How high is the UV index in May in Grande-Synthe?
Average temperature in May
Grande-Synthe, France
- Average high temperature in May: 15.5°C
The warmest month (with the highest average high temperature) is August (21°C).
The month with the lowest average high temperature is January (6.8°C).
- Average low temperature in May: 9.6°C
The month with the highest average low temperature is August (15.4°C).
The coldest month (with the lowest average low temperature) is January (3.6°C).
Average pressure in May
Grande-Synthe, France
- Average pressure in May: 1016.8mbar
The month with the highest atmospheric pressure is September (1017.4mbar).
The month with the lowest atmospheric pressure is November (1011.6mbar).
Average wind speed in May
Grande-Synthe, France
- Average wind speed in May: 17.1km/h
The windiest month (with the highest average wind speed) is December (24km/h).
The calmest month (with the lowest average wind speed) is July (16.6km/h).
Average humidity in May
Grande-Synthe, France
- Average humidity in May: 77%
The months with the highest relative humidity are January and December (83%).
The month with the lowest relative humidity is August (75%).
Average rainfall in May
Grande-Synthe, France
- Average rainfall in May: 29mm
The wettest month (with the highest rainfall) is December (59mm).
The driest month (with the least rainfall) is April (22mm).
Average rainfall days in May
Grande-Synthe, France
- Average rainfall days in May: 14.3 days
The month with the highest number of rainy days is November (18.3 days).
The month with the least rainy days is April (11.6 days).
Average snowfall in May
Grande-Synthe, France
- Average snowfall in May: 0mm
The month with the highest snowfall is January (28mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in May
Grande-Synthe, France
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (2.9 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Grande-Synthe, France
- Average daylight in May: 15h and 4min
The month with the longest days is June (Average daylight: 16h and 30min).
The month with the shortest days is December (Average daylight: 8h and 0min).
- Average sunshine in May: 8h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in May
Grande-Synthe, France
- Average sunshine days in May: 14.4 days
The month with the most sunshine days is April (16.5 days).
The month with the least sunshine days is November (9.1 days).
Average UV index in May
Grande-Synthe, 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
Grande-Synthe, France
- Average cloud cover in May: 42
The month with the most cloud cover is December (Cloud cover 60).
The month with the least cloud cover is April (Cloud cover 38).
Average visibility in May
Grande-Synthe, France
- Average visibility in May: 10km
The months with the highest visibility are March, April, May, June, July, August, September and October (10km).
The months with the lowest visibility are January, February, November and December (9km).
Grande-Synthe, France
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