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
The arrival of May sees an average high-temperature of an enjoyable 16.3°C (61.3°F), hardly diverging from April's 13.8°C (56.8°F). Treffléan registers a consistent average low-temperature of 10.2°C (50.4°F) during May.Humidity
In Treffléan, the average relative humidity in May is 80%.Rainfall
In Treffléan, France, in May, it is raining for 14.1 days, with typically 36mm (1.42") of accumulated precipitation. In Treffléan, during the entire year, the rain falls for 169.8 days and collects up to 593mm (23.35") of precipitation.Snowfall
In Treffléan, France, snow does not fall in January, March, May through November.Daylight
The average length of the day in May is 15h and 9min.On the first day of the month, sunrise is at 06:51 and sunset at 21:23. On the last day of May, sunrise is at 06:16 and sunset at 21:59 CEST.
Sunshine
The average sunshine in May is 9.1h.UV index
In Treffléan, 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 ordinary individuals.Note: In May, a daily UV index of 4 turns into the following recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Frequently asked questions
What is the usual temperature for Treffléan in May?
What is the average humidity in May in Treffléan?
How much does it rain in Treffléan in May?
When it does not snow in Treffléan?
Does it snow in Treffléan in May?
How many hours of daylight does Treffléan have in May?
When are sunrise and sunset in May in Treffléan?
How long on average sun shines in May in Treffléan?
How high is the UV index in May in Treffléan?
Average temperature in May
Treffléan, France
- Average high temperature in May: 16.3°C
The warmest month (with the highest average high temperature) is July (21.3°C).
The month with the lowest average high temperature is January (9.3°C).
- Average low temperature in May: 10.2°C
The month with the highest average low temperature is August (15°C).
The coldest month (with the lowest average low temperature) is February (5.3°C).
Average pressure in May
Treffléan, France
- Average pressure in May: 1017.4mbar
The month with the highest atmospheric pressure is December (1018.6mbar).
The month with the lowest atmospheric pressure is November (1013mbar).
Average wind speed in May
Treffléan, France
- Average wind speed in May: 16.7km/h
The windiest month (with the highest average wind speed) is December (22.9km/h).
The calmest month (with the lowest average wind speed) is August (15.5km/h).
Average humidity in May
Treffléan, France
- Average humidity in May: 80%
The months with the highest relative humidity are January and December (83%).
The months with the lowest relative humidity are August and September (78%).
Average rainfall in May
Treffléan, France
- Average rainfall in May: 36mm
The wettest month (with the highest rainfall) is November (81mm).
The driest month (with the least rainfall) is September (24mm).
Average rainfall days in May
Treffléan, France
- Average rainfall days in May: 14.1 days
The month with the highest number of rainy days is January (17.7 days).
The month with the least rainy days is September (10 days).
Average snowfall in May
Treffléan, France
- Average snowfall in May: 0mm
The months with the highest snowfall are February, April and December (1mm).
The months with the least snowfall are January, March, May, June, July, August, September, October and November (0mm).
Average snowfall days in May
Treffléan, France
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (0.5 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
Treffléan, France
- Average daylight in May: 15h and 1min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in May: 9h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in May
Treffléan, France
- Average sunshine days in May: 14.3 days
The month with the most sunshine days is September (18.1 days).
The month with the least sunshine days is November (10.4 days).
Average UV index in May
Treffléan, 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, March, April, November and December (UV index 3).
Average cloud cover in May
Treffléan, France
- Average cloud cover in May: 40
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is September (Cloud cover 33).
Average visibility in May
Treffléan, 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).
Treffléan, France
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