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
Boulogne-sur-Mer's weather in May indicates an average high-temperature of a mild 13.9°C (57°F), nearly consistent with the 11.9°C (53.4°F) of April. Boulogne-sur-Mer maintains a minor drop in temperature during May nights, with averages of 9.8°C (49.6°F).Humidity
The average relative humidity in May is 82%.Rainfall
April and May are months with the least rain in Boulogne-sur-Mer when the rain falls for 12.6 days and typically aggregates up to 19mm (0.75") of rain.Snowfall
In Boulogne-sur-Mer, snow does not fall in April through October.Daylight
In Boulogne-sur-Mer, France, the average length of the day in May is 15h and 32min.On the first day of May in Boulogne-sur-Mer, sunrise is at 06:26 and sunset at 21:14. On the last day of the month, sunrise is at 05:46 and sunset at 21:56 CEST.
Sunshine
The average sunshine in May is 9h.UV index
In Boulogne-sur-Mer, the average daily maximum UV index in May is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: In May, an average UV index of 4 transforms into the following instructions:
Exercise caution. Those with pale skin may experience burns in less than half an hour. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Enhance your sun protection with tightly woven, yet airy clothing.
Frequently asked questions
What is the average May temperature in Boulogne-sur-Mer?
What is the average humidity in May in Boulogne-sur-Mer?
What is the driest month in Boulogne-sur-Mer?
How many days does it rain in May in Boulogne-sur-Mer?
When it does not snow in Boulogne-sur-Mer?
What is the average length of the day in May in Boulogne-sur-Mer?
What time are sunrise and sunset in May in Boulogne-sur-Mer?
How long on average sun shines in May in Boulogne-sur-Mer?
What is the UV index reading in May in Boulogne-sur-Mer?
Average temperature in May
Boulogne-sur-Mer, France
- Average high temperature in May: 13.9°C
The warmest month (with the highest average high temperature) is August (19.6°C).
The month with the lowest average high temperature is January (7°C).
- Average low temperature in May: 9.8°C
The month with the highest average low temperature is August (15.7°C).
The coldest month (with the lowest average low temperature) is January (4.1°C).
Average pressure in May
Boulogne-sur-Mer, France
- Average pressure in May: 1016.9mbar
The month with the highest atmospheric pressure is September (1017.5mbar).
The month with the lowest atmospheric pressure is November (1011.6mbar).
Average wind speed in May
Boulogne-sur-Mer, France
- Average wind speed in May: 18.8km/h
The windiest month (with the highest average wind speed) is December (27.4km/h).
The calmest month (with the lowest average wind speed) is July (18.1km/h).
Average humidity in May
Boulogne-sur-Mer, France
- Average humidity in May: 82%
The months with the highest relative humidity are January, June and December (83%).
The months with the lowest relative humidity are August and September (79%).
Average rainfall in May
Boulogne-sur-Mer, France
- Average rainfall in May: 19mm
The wettest month (with the highest rainfall) is December (54mm).
The driest months (with the least rainfall) are April and May (19mm).
Average rainfall days in May
Boulogne-sur-Mer, France
- Average rainfall days in May: 12.6 days
The month with the highest number of rainy days is November (17.9 days).
The month with the least rainy days is April (11.5 days).
Average snowfall in May
Boulogne-sur-Mer, France
- Average snowfall in May: 0mm
The month with the highest snowfall is January (21mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in May
Boulogne-sur-Mer, France
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (2.5 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
Boulogne-sur-Mer, France
- Average daylight in May: 15h and 3min
The month with the longest days is June (Average daylight: 16h and 24min).
The month with the shortest days is December (Average daylight: 8h and 6min).
- Average sunshine in May: 9h and 0min
The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is November (Average sunshine: 4h and 12min).
Average sunshine days in May
Boulogne-sur-Mer, France
- Average sunshine days in May: 14.8 days
The month with the most sunshine days is April (15.4 days).
The month with the least sunshine days is November (9.2 days).
Average UV index in May
Boulogne-sur-Mer, 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 and November (UV index 2).
Average cloud cover in May
Boulogne-sur-Mer, France
- Average cloud cover in May: 41
The month with the most cloud cover is November (Cloud cover 59).
The months with the least cloud cover are April and August (Cloud cover 38).
Average visibility in May
Boulogne-sur-Mer, 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).
Boulogne-sur-Mer, France
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