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
May's advent in Heerlen presents an average high-temperature of an enjoyable 17.3°C (63.1°F), indicating a slight variation from the conditions of the previous month. May nights in Heerlen observe an average temperature dip to a frosty 8.1°C (46.6°F).Humidity
The average relative humidity in May is 79%.Rainfall
In Heerlen, in May, it is raining for 18 days, with typically 43mm (1.69") of accumulated precipitation. In Heerlen, during the entire year, the rain falls for 182.5 days and collects up to 482mm (18.98") of precipitation.Snowfall
April through October are months without snowfall.Daylight
In Heerlen, the average length of the day in May is 15h and 33min.On the first day of May in Heerlen, Netherlands, sunrise is at 06:08 and sunset at 20:57. On the last day of the month, sunrise is at 05:27 and sunset at 21:39 CEST.
Sunshine
In May, the average sunshine in Heerlen, Netherlands, is 8.2h.UV index
In May, the average daily maximum UV index in Heerlen 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 average individuals.Note: A maximum daily UV index of 4 during May morphs into the following directions:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Heerlen in May?
What is the average humidity in May in Heerlen?
How many days does it rain in May in Heerlen?
When it does not snow in Heerlen?
What is the average length of the day in May in Heerlen?
What time are sunrise and sunset in May in Heerlen?
How long on average sun shines in May in Heerlen?
What is the UV index intensity in May in Heerlen?
Average temperature in May
Heerlen, Netherlands
- Average high temperature in May: 17.3°C
The warmest months (with the highest average high temperature) are July and August (22.6°C).
The month with the lowest average high temperature is January (4.3°C).
- Average low temperature in May: 8.1°C
The month with the highest average low temperature is August (13.7°C).
The coldest month (with the lowest average low temperature) is January (0.4°C).
Average pressure in May
Heerlen, Netherlands
- Average pressure in May: 1016.2mbar
The month with the highest atmospheric pressure is September (1017.6mbar).
The month with the lowest atmospheric pressure is November (1013.1mbar).
Average wind speed in May
Heerlen, Netherlands
- Average wind speed in May: 11.8km/h
The windiest month (with the highest average wind speed) is December (17.6km/h).
The calmest month (with the lowest average wind speed) is August (11.1km/h).
Average humidity in May
Heerlen, Netherlands
- Average humidity in May: 79%
The months with the highest relative humidity are January and December (87%).
The month with the lowest relative humidity is April (75%).
Average rainfall in May
Heerlen, Netherlands
- Average rainfall in May: 43mm
The wettest month (with the highest rainfall) is December (51mm).
The driest month (with the least rainfall) is April (22mm).
Average rainfall days in May
Heerlen, Netherlands
- Average rainfall days in May: 18 days
The months with the highest number of rainy days are May and July (18 days).
The month with the least rainy days is September (12.2 days).
Average snowfall in May
Heerlen, Netherlands
- Average snowfall in May: 0mm
The month with the highest snowfall is January (48mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in May
Heerlen, Netherlands
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (5.9 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
Heerlen, Netherlands
- Average daylight in May: 15h and 4min
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 0min).
- Average sunshine in May: 8h and 1min
The month with the most sunshine is August (Average sunshine: 9h and 12min).
The month with the least sunshine is December (Average sunshine: 3h and 42min).
Average sunshine days in May
Heerlen, Netherlands
- Average sunshine days in May: 10.3 days
The months with the most sunshine days are September and October (15.5 days).
The month with the least sunshine days is June (9.8 days).
Average UV index in May
Heerlen, Netherlands
- Average UV index in May: 4
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Heerlen, Netherlands
- Average cloud cover in May: 46
The month with the most cloud cover is December (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 40).
Average visibility in May
Heerlen, Netherlands
- Average visibility in May: 9km
The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (9km).
The months with the lowest visibility are January and December (8km).
Heerlen, Netherlands
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