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
May
Weather in May
Temperature
The weather during May records an average high-temperature of a mild 13.3°C (55.9°F), closely mirroring the preceding month. In Portbail, a slight decrease from the daytime peak is noted during the month of May, with an average low-temperature of 11°C (51.8°F).Humidity
In Portbail, the average relative humidity in May is 82%.Rainfall
In Portbail, France, in May, during 12.2 rainfall days, 26mm (1.02") of precipitation is typically accumulated. In Portbail, during the entire year, the rain falls for 189 days and collects up to 538mm (21.18") of precipitation.Snowfall
April through October are months without snowfall.Sea temperature
In May, the average sea temperature in Portbail is 12.2°C (54°F).Note: Swimming in 12.2°C (54°F) poses a severe threat. Even short exposure to 13°C (55.4°F) is chilling, and going below 10°C (50°F) can cause breathing irregularities and intense cold shock, based on one's stamina.
Daylight
In Portbail, the average length of the day in May is 15h and 21min.On the first day of the month, sunrise is at 06:43 and sunset at 21:23. On the last day of May, in Portbail, France, sunrise is at 06:05 and sunset at 22:03 CEST.
Sunshine
In Portbail, the average sunshine in May is 9.3h.UV index
In May, the average daily maximum UV index in Portbail is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: The average daily UV index of 4 in May transforms into the following instructions:
Guard yourself - Precautionary measures against sun damage are advocated. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May in Portbail?
What is the average humidity in May in Portbail?
How many days does it rain in May in Portbail?
When it does not snow in Portbail?
How cold is the water in May in Portbail?
What is the average length of the day in May in Portbail?
When is the sunrise / sunset in May in Portbail?
How many hours of sunshine does Portbail have in May?
What is the UV index reading in May in Portbail?
Average temperature in May
Portbail, France
- Average high temperature in May: 13.3°C
The warmest month (with the highest average high temperature) is August (18.2°C).
The month with the lowest average high temperature is February (9°C).
- Average low temperature in May: 11°C
The month with the highest average low temperature is August (16.3°C).
The coldest month (with the lowest average low temperature) is February (6.8°C).
Average pressure in May
Portbail, France
- Average pressure in May: 1017.3mbar
The month with the highest atmospheric pressure is September (1018mbar).
The month with the lowest atmospheric pressure is November (1011.8mbar).
Average wind speed in May
Portbail, France
- Average wind speed in May: 22km/h
The windiest month (with the highest average wind speed) is December (34km/h).
The calmest month (with the lowest average wind speed) is July (20.4km/h).
Average humidity in May
Portbail, France
- Average humidity in May: 82%
The months with the highest relative humidity are June and July (83%).
The months with the lowest relative humidity are November and December (78%).
Average rainfall in May
Portbail, France
- Average rainfall in May: 26mm
The wettest month (with the highest rainfall) is November (78mm).
The driest month (with the least rainfall) is July (25mm).
Average rainfall days in May
Portbail, France
- Average rainfall days in May: 12.2 days
The month with the highest number of rainy days is November (21.2 days).
The months with the least rainy days are May and July (12.2 days).
Average snowfall in May
Portbail, France
- Average snowfall in May: 0mm
The month with the highest snowfall is January (2mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in May
Portbail, France
- Average snowfall days in May: 0 days
The months with the highest number of snowfall days are January and February (0.4 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average sea temperature in May
Portbail, France
- Average sea temperature in May: 12.2°C
The best month for swimming (with the highest average sea temperature) is September (17.9°C).
The coldest month (with the lowest average sea temperature) is March (8.7°C).
Average daylight in May /
Average sunshine in May
Portbail, France
- Average daylight in May: 15h and 2min
The month with the longest days is June (Average daylight: 16h and 12min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in May: 9h and 2min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The months with the least sunshine are January and November (Average sunshine: 4h and 0min).
Average sunshine days in May
Portbail, France
- Average sunshine days in May: 16.8 days
The month with the most sunshine days is May (16.8 days).
The month with the least sunshine days is November (5.8 days).
Average UV index in May
Portbail, France
- Average UV index in May: 4
The months with the highest UV index are June, July, August and September (UV index 5).
The months with the lowest UV index are January and February (UV index 2).
Average cloud cover in May
Portbail, France
- Average cloud cover in May: 39
The months with the most cloud cover are January, November and December (Cloud cover 61).
The month with the least cloud cover is July (Cloud cover 37).
Average visibility in May
Portbail, 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).
