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
The transition from April to May brings an average high-temperature of a moderate 14.5°C (58.1°F), barely different from April's 12.6°C (54.7°F). The month of May in Guissény shows a minor drop from daytime temperatures, generally recording a low average of 10.2°C (50.4°F).Humidity
In Guissény, the average relative humidity in May is 82%.Rainfall
In May, the rain falls for 13.3 days. Throughout May, 30mm (1.18") of precipitation is accumulated. Throughout the year, in Guissény, France, there are 188.2 rainfall days, and 560mm (22.05") of precipitation is accumulated.Snowfall
In Guissény, snow does not fall in April through October.Sea temperature
In Guissény, France, in May, the average water temperature is 12.5°C (54.5°F).Note: Swimming at temperatures less than 10°C (50°F) in 12.5°C (54.5°F) is feasible with the right swimsuit; if not, expect cold shock and breathlessness. A quick swim at 13°C (55.4°F) without adequate warmth can be discomforting.
Daylight
The average length of the day in May is 15h and 16min.On the first day of May, sunrise is at 06:56 and sunset at 21:32. On the last day of the month, sunrise is at 06:19 and sunset at 22:11 CEST.
Sunshine
In Guissény, the average sunshine in May is 9.1h.UV index
The average daily maximum UV index in May in Guissény is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 4 during May leads to these advisories:
Take necessary precautions - Protection from skin and eye injury is mandatory. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Frequently asked questions
What is the average May temperature in Guissény?
What is the average humidity in May in Guissény?
How much does it rain in Guissény in May?
When it does not snow in Guissény?
What is the water temperature in May in Guissény?
How many hours of daylight does Guissény have in May?
When are sunrise and sunset in May in Guissény?
How many hours of sunshine does Guissény have in May?
What is the UV index intensity in May in Guissény?
Average temperature in May
Guissény, France
- Average high temperature in May: 14.5°C
The warmest months (with the highest average high temperature) are July and August (18.7°C).
The month with the lowest average high temperature is February (9.4°C).
- Average low temperature in May: 10.2°C
The month with the highest average low temperature is August (14.9°C).
The coldest month (with the lowest average low temperature) is February (6.4°C).
Average pressure in May
Guissény, France
- Average pressure in May: 1017.6mbar
The month with the highest atmospheric pressure is September (1018.2mbar).
The month with the lowest atmospheric pressure is November (1011.8mbar).
Average wind speed in May
Guissény, France
- Average wind speed in May: 18.7km/h
The windiest month (with the highest average wind speed) is December (27.6km/h).
The calmest month (with the lowest average wind speed) is July (17.8km/h).
Average humidity in May
Guissény, France
- Average humidity in May: 82%
The month with the highest relative humidity is June (84%).
The months with the lowest relative humidity are February, March and April (80%).
Average rainfall in May
Guissény, France
- Average rainfall in May: 30mm
The wettest month (with the highest rainfall) is November (77mm).
The driest month (with the least rainfall) is September (22mm).
Average rainfall days in May
Guissény, France
- Average rainfall days in May: 13.3 days
The month with the highest number of rainy days is January (20.5 days).
The month with the least rainy days is September (10.6 days).
Average snowfall in May
Guissény, France
- Average snowfall in May: 0mm
The month with the highest snowfall is February (3mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in May
Guissény, France
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (1.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average sea temperature in May
Guissény, France
- Average sea temperature in May: 12.5°C
The best month for swimming (with the highest average sea temperature) is August (16.7°C).
The coldest month (with the lowest average sea temperature) is March (9.9°C).
Average daylight in May /
Average sunshine in May
Guissény, France
- Average daylight in May: 15h and 2min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in May: 9h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 3h and 18min).
Average sunshine days in May
Guissény, France
- Average sunshine days in May: 13.8 days
The month with the most sunshine days is September (16.4 days).
The months with the least sunshine days are January and November (7.3 days).
Average UV index in May
Guissény, France
- Average UV index in May: 4
The months with the highest UV index are June, July and August (UV index 5).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in May
Guissény, France
- Average cloud cover in May: 43
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is April (Cloud cover 41).
Average visibility in May
Guissény, 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).
Guissény, France
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