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
With the advent of May, Royan's high-temperatures adjust to a still refreshing 18.9°C (66°F), closely aligning with the preceding month. An average low-temperature of 10.5°C (50.9°F) is observed during the May nights.Humidity
In Royan, the average relative humidity in May is 79%.Rainfall
In Royan, during May, the rain falls for 14.1 days and regularly aggregates up to 44mm (1.73") of precipitation. Throughout the year, there are 161.7 rainfall days, and 495mm (19.49") of precipitation is accumulated.Snowfall
In Royan, snow does not fall in April through November.Sea temperature
In May, the average sea temperature in Royan is 15.6°C (60.1°F).Note: A surface water temperature of 15.6°C (60.1°F) does not provide an enjoyable swimming experience for most. Breathing control becomes more challenging as the water temperature drops below 21°C (69.8°F).
Daylight
In May, the average length of the day is 14h and 56min.On the first day of May, sunrise is at 06:50 and sunset at 21:11. On the last day of the month, sunrise is at 06:18 and sunset at 21:45 CEST.
Sunshine
The average sunshine in May is 9.1h.UV index
May through September, with an average maximum UV index of 5, are months with the highest UV index. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index of 5 in May interprets into the following recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature?
What is the average humidity in May?
How many days does it rain in May in Royan?
When it does not snow?
What is the sea temperature in May?
What is the average length of the day in May?
When are sunrise and sunset in May?
How many hours of sunshine does Royan have in May?
What is the month with the highest UV index?
How high is the UV index in May?
Average temperature in May
Royan, France
- Average high temperature in May: 18.9°C
The warmest month (with the highest average high temperature) is August (25.7°C).
The month with the lowest average high temperature is January (9.1°C).
- Average low temperature in May: 10.5°C
The month with the highest average low temperature is August (15.7°C).
The coldest month (with the lowest average low temperature) is February (3.8°C).
Average pressure in May
Royan, France
- Average pressure in May: 1017.1mbar
The month with the highest atmospheric pressure is December (1020.3mbar).
The month with the lowest atmospheric pressure is November (1014.4mbar).
Average wind speed in May
Royan, France
- Average wind speed in May: 13.8km/h
The windiest month (with the highest average wind speed) is February (17km/h).
The calmest month (with the lowest average wind speed) is August (11.3km/h).
Average humidity in May
Royan, France
- Average humidity in May: 79%
The months with the highest relative humidity are January and December (84%).
The months with the lowest relative humidity are August and September (70%).
Average rainfall in May
Royan, France
- Average rainfall in May: 44mm
The wettest month (with the highest rainfall) is November (80mm).
The driest month (with the least rainfall) is July (21mm).
Average rainfall days in May
Royan, France
- Average rainfall days in May: 14.1 days
The month with the highest number of rainy days is November (16.1 days).
The month with the least rainy days is September (9.5 days).
Average snowfall in May
Royan, France
- Average snowfall in May: 0mm
The months with the highest snowfall are March and December (4mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in May
Royan, France
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (0.9 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average sea temperature in May
Royan, France
- Average sea temperature in May: 15.6°C
The best month for swimming (with the highest average sea temperature) is August (19.9°C).
The coldest month (with the lowest average sea temperature) is February (9.8°C).
Average daylight in May /
Average sunshine in May
Royan, France
- Average daylight in May: 14h and 5min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in May: 9h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The months with the least sunshine are January and December (Average sunshine: 4h and 48min).
Average sunshine days in May
Royan, France
- Average sunshine days in May: 13.8 days
The month with the most sunshine days is September (18.6 days).
The month with the least sunshine days is November (11.7 days).
Average UV index in May
Royan, France
- Average UV index in May: 5
The months with the highest UV index are May, June, July, August and September (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
Royan, France
- Average cloud cover in May: 40
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in May
Royan, France
- Average visibility in May: 9km
The months with the highest visibility are March, July, August and September (10km).
The months with the lowest visibility are January, February, April, May, June, October, November and December (9km).
