April weather forecastHerstal, Belgium
April
Weather in April
April brings a noticeable change in Herstal's weather with the arrival of warmer temperatures. This month sees a steady increase in temperatures, resulting in nearly no snowfall from an already declining 12mm (0.47") in March. The frequency of sunny days also increases, bathing the city with a gentle warmth, amplifying the city's charm. Life starts blooming all around, and the longer daylight hours welcome more outdoor activities. Outdoor markets brim with fresh produce, and people partake in the joys of spring amid Herstal's lively ambiance.Temperature
The embrace of April brings a minor uplift in the average high-temperature in Herstal, shifting from a frosty 9.6°C (49.3°F) in March to a moderate 14.2°C (57.6°F). Herstal records an average nighttime low of 4.8°C (40.6°F) in April.Humidity
The months with the lowest humidity are April and August, with an average relative humidity of 77%.Rainfall
The month with the least rainfall is April, when the rain falls for 14.5 days and typically collects 26mm (1.02") of precipitation.Snowfall
Months with snowfall are January through April, November and December. April is the last month it regularly snows. During 0.4 snowfall days, in April, Herstal aggregates 1mm (0.04") of snow. In Herstal, during the entire year, snow falls for 18.2 days and aggregates up to 135mm (5.31") of snow.Daylight
In Herstal, the average length of the day in April is 13h and 50min.On the first day of the month, sunrise is at 07:12 and sunset at 20:10. On the last day of April, sunrise is at 06:12 and sunset at 20:56 CEST.
Sunshine
In April, the average sunshine is 8.3h.UV index
In Herstal, the average daily maximum UV index in April is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index of 3 in April converts into the following recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Herstal, Belgium
- Average high temperature in April: 14.2°C
The warmest months (with the highest average high temperature) are July and August (22.3°C).
The month with the lowest average high temperature is January (4.1°C).
- Average low temperature in April: 4.8°C
The month with the highest average low temperature is August (12.8°C).
The coldest month (with the lowest average low temperature) is January (-0.3°C).
Average pressure in April
Herstal, Belgium
- Average pressure in April: 1015.7mbar
The month with the highest atmospheric pressure is September (1017.5mbar).
The month with the lowest atmospheric pressure is November (1013.1mbar).
Average wind speed in April
Herstal, Belgium
- Average wind speed in April: 11.9km/h
The windiest month (with the highest average wind speed) is December (17km/h).
The calmest month (with the lowest average wind speed) is August (10.5km/h).
Average humidity in April
Herstal, Belgium
- Average humidity in April: 77%
The month with the highest relative humidity is December (89%).
The months with the lowest relative humidity are April and August (77%).
Average rainfall in April
Herstal, Belgium
- Average rainfall in April: 26mm
The wettest month (with the highest rainfall) is December (58mm).
The driest month (with the least rainfall) is April (26mm).
Average rainfall days in April
Herstal, Belgium
- Average rainfall days in April: 14.5 days
The month with the highest number of rainy days is July (19.4 days).
The month with the least rainy days is February (12.7 days).
Average snowfall in April
Herstal, Belgium
- Average snowfall in April: 1mm
The month with the highest snowfall is January (50mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in April
Herstal, Belgium
- Average snowfall days in April: 0.4 days
The month with the highest number of snowfall days is January (5.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in April /
Average sunshine in April
Herstal, Belgium
- Average daylight in April: 13h and 48min
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 April: 8h and 18min
The months with the most sunshine are July and August (Average sunshine: 9h and 12min).
The month with the least sunshine is December (Average sunshine: 3h and 36min).
Average sunshine days in April
Herstal, Belgium
- Average sunshine days in April: 12.1 days
The month with the most sunshine days is October (14.7 days).
The month with the least sunshine days is June (8.3 days).
Average UV index in April
Herstal, Belgium
- Average UV index in April: 3
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in April
Herstal, Belgium
- Average cloud cover in April: 41
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 April
Herstal, Belgium
- Average visibility in April: 9km
The months with the highest visibility are March, April, May, June, July and August (9km).
The months with the lowest visibility are January, February, September, October, November and December (8km).
