May weather forecastSpiennes, Belgium
May
Weather in May
The last month of the spring, May, is a comfortable month in Spiennes, Belgium, with an average temperature ranging between max 17.3°C (63.1°F) and min 7.5°C (45.5°F).Temperature
Spiennes starts May with an average high-temperature of a still refreshing 17.3°C (63.1°F), hinting at a minimal fluctuation from April. Spiennes reports a consistent average low-temperature of 7.5°C (45.5°F) throughout May nights.Humidity
The average relative humidity in May is 80%.Rainfall
In Spiennes, in May, it is raining for 17.5 days, with typically 39mm (1.54") of accumulated precipitation. Throughout the year, in Spiennes, there are 181.2 rainfall days, and 503mm (19.8") of precipitation is accumulated.Snowfall
April through September are months without snowfall.Daylight
In May, the average length of the day in Spiennes is 15h and 29min.On the first day of the month, sunrise is at 06:17 and sunset at 21:04. On the last day of May, in Spiennes, sunrise is at 05:38 and sunset at 21:45 CEST.
Sunshine
The average sunshine in May is 8h.UV index
The average daily maximum UV index in May is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the average person.Note: The UV index of 4 during May translates into the following guidance:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Spiennes, Belgium
- Average high temperature in May: 17.3°C
The warmest months (with the highest average high temperature) are July and August (22.7°C).
The month with the lowest average high temperature is January (5°C).
- Average low temperature in May: 7.5°C
The months with the highest average low temperature are July and August (12.9°C).
The coldest month (with the lowest average low temperature) is January (0.7°C).
Average pressure in May
Spiennes, Belgium
- Average pressure in May: 1016.5mbar
The month with the highest atmospheric pressure is September (1017.5mbar).
The month with the lowest atmospheric pressure is November (1012.6mbar).
Average wind speed in May
Spiennes, Belgium
- Average wind speed in May: 12.9km/h
The windiest month (with the highest average wind speed) is December (18.8km/h).
The calmest month (with the lowest average wind speed) is August (11.9km/h).
Average humidity in May
Spiennes, Belgium
- Average humidity in May: 80%
The month with the highest relative humidity is December (89%).
The months with the lowest relative humidity are July and August (77%).
Average rainfall in May
Spiennes, Belgium
- Average rainfall in May: 39mm
The wettest month (with the highest rainfall) is December (60mm).
The driest month (with the least rainfall) is April (28mm).
Average rainfall days in May
Spiennes, Belgium
- Average rainfall days in May: 17.5 days
The month with the highest number of rainy days is July (18.5 days).
The month with the least rainy days is March (12.8 days).
Average snowfall in May
Spiennes, Belgium
- Average snowfall in May: 0mm
The month with the highest snowfall is January (31mm).
The months with the least snowfall are April, May, June, July, August and September (0mm).
Average snowfall days in May
Spiennes, Belgium
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (3.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Spiennes, Belgium
- Average daylight in May: 15h and 30min
The month with the longest days is June (Average daylight: 16h and 24min).
The month with the shortest days is December (Average daylight: 8h and 6min).
- Average sunshine in May: 8h and 0min
The months with the most sunshine are July and August (Average sunshine: 8h and 48min).
The months with the least sunshine are January and December (Average sunshine: 3h and 42min).
Average sunshine days in May
Spiennes, Belgium
- Average sunshine days in May: 11.4 days
The month with the most sunshine days is October (15.7 days).
The month with the least sunshine days is July (9.8 days).
Average UV index in May
Spiennes, Belgium
- 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, November and December (UV index 2).
Average cloud cover in May
Spiennes, Belgium
- Average cloud cover in May: 47
The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are April and August (Cloud cover 43).
Average visibility in May
Spiennes, Belgium
- Average visibility in May: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
