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 sea temperature 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
As April transitions into May, Calais records an average high-temperature of a mild 13.8°C (56.8°F), showing a gentle shift from the preceding month. Calais's nighttime average temperature in May drops marginally from the daytime highs, settling at a fresh 10.2°C (50.4°F).Humidity
The average relative humidity in May in Calais is 81%.Rainfall
In Calais, in May, it is raining for 12.7 days, with typically 25mm (0.98") of accumulated precipitation. In Calais, during the entire year, the rain falls for 178.1 days and collects up to 461mm (18.15") of precipitation.Snowfall
In Calais, snow does not fall in April through October.Sea temperature
In Calais, in May, the average water temperature is 11.8°C (53.2°F).Note: Danger awaits those who swim in 11.8°C (53.2°F) without protection. Falling below 10°C (50°F) means intense cold shock and hyperventilation.
Daylight
In Calais, France, the average length of the day in May is 15h and 34min.On the first day of the month, sunrise is at 06:24 and sunset at 21:14. On the last day of May, sunrise is at 05:43 and sunset at 21:56 CEST.
Sunshine
The average sunshine in May is 8.8h.UV index
In May, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for average individuals.Note: A maximum high daily UV index of 4 during May translates into the following directions:
Undertake precautions - Obligation exists to protect against skin and eye damage. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Frequently asked questions
What are the temperatures in Calais in May?
What is the average humidity in May in Calais?
How many days does it rain in May in Calais?
When it does not snow in Calais?
What is the sea water temperature in May in Calais?
How many hours of daylight does Calais have in May?
What time are sunrise and sunset in May in Calais?
How many hours of sunshine does Calais have in May?
How high is the UV index in May in Calais?
Average temperature in May
Calais, France
- Average high temperature in May: 13.8°C
The warmest month (with the highest average high temperature) is August (19.7°C).
The month with the lowest average high temperature is February (7.1°C).
- Average low temperature in May: 10.2°C
The month with the highest average low temperature is August (15.9°C).
The coldest months (with the lowest average low temperature) are January and February (4.5°C).
Average pressure in May
Calais, France
- Average pressure in May: 1016.9mbar
The month with the highest atmospheric pressure is September (1017.4mbar).
The month with the lowest atmospheric pressure is November (1011.5mbar).
Average wind speed in May
Calais, France
- Average wind speed in May: 19.5km/h
The windiest month (with the highest average wind speed) is December (28.2km/h).
The calmest month (with the lowest average wind speed) is July (19km/h).
Average humidity in May
Calais, France
- Average humidity in May: 81%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is September (78%).
Average rainfall in May
Calais, France
- Average rainfall in May: 25mm
The wettest month (with the highest rainfall) is October (55mm).
The driest month (with the least rainfall) is April (19mm).
Average rainfall days in May
Calais, France
- Average rainfall days in May: 12.7 days
The month with the highest number of rainy days is November (19.5 days).
The month with the least rainy days is April (12.2 days).
Average snowfall in May
Calais, France
- Average snowfall in May: 0mm
The month with the highest snowfall is January (19mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in May
Calais, France
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (2.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in May
Calais, France
- Average sea temperature in May: 11.8°C
The best months for swimming (with the highest average sea temperature) are August and September (17.8°C).
The coldest month (with the lowest average sea temperature) is March (7.7°C).
Average daylight in May /
Average sunshine in May
Calais, 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 48min).
The month with the least sunshine is November (Average sunshine: 4h and 6min).
Average sunshine days in May
Calais, France
- Average sunshine days in May: 14.7 days
The month with the most sunshine days is April (15.7 days).
The month with the least sunshine days is November (8.8 days).
Average UV index in May
Calais, 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 and February (UV index 2).
Average cloud cover in May
Calais, France
- Average cloud cover in May: 42
The months with the most cloud cover are November and December (Cloud cover 59).
The months with the least cloud cover are April and August (Cloud cover 39).
Average visibility in May
Calais, France
- Average visibility in May: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Calais, France
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