April weather forecastCastilly, France
April
Weather in April
April in Castilly, France, is a mild spring month, with an average temperature fluctuating between 5.6°C (42.1°F) and 13.5°C (56.3°F).Temperature
April brings a marginal elevation to a refreshing 13.5°C (56.3°F) from March's 10.7°C (51.3°F) in Castilly's average high-temperatures. Throughout the month of April, Castilly sees a steady low-temperature average of 5.6°C (42.1°F).Humidity
In Castilly, France, the average relative humidity in April is 82%.Rainfall
In Castilly, in April, during 15.9 rainfall days, 36mm (1.42") of precipitation is typically accumulated. Throughout the year, there are 197.4 rainfall days, and 564mm (22.2") of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall. April is the last month it regularly snows. During 0.1 snowfall days, in April, Castilly aggregates 1mm (0.04") of snow. In Castilly, during the entire year, snow falls for 7.7 days and aggregates up to 43mm (1.69") of snow.Daylight
In Castilly, the average length of the day in April is 13h and 46min.On the first day of April in Castilly, sunrise is at 07:39 and sunset at 20:35. On the last day of the month, sunrise is at 06:42 and sunset at 21:19 CEST.
Sunshine
The average sunshine in April is 7.4h.UV index
The average daily maximum UV index in April is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: The daily high UV index of 3 in April translates into this advice:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Castilly, France
- Average high temperature in April: 13.5°C
The warmest month (with the highest average high temperature) is August (21°C).
The month with the lowest average high temperature is January (7.7°C).
- Average low temperature in April: 5.6°C
The month with the highest average low temperature is August (12.9°C).
The coldest month (with the lowest average low temperature) is February (3.3°C).
Average pressure in April
Castilly, France
- Average pressure in April: 1015.7mbar
The month with the highest atmospheric pressure is September (1018mbar).
The month with the lowest atmospheric pressure is November (1012.2mbar).
Average wind speed in April
Castilly, France
- Average wind speed in April: 15.5km/h
The windiest month (with the highest average wind speed) is December (20.9km/h).
The calmest month (with the lowest average wind speed) is August (13.2km/h).
Average humidity in April
Castilly, France
- Average humidity in April: 82%
The months with the highest relative humidity are January, November and December (86%).
The months with the lowest relative humidity are July, August and September (81%).
Average rainfall in April
Castilly, France
- Average rainfall in April: 36mm
The wettest month (with the highest rainfall) is December (80mm).
The driest month (with the least rainfall) is September (25mm).
Average rainfall days in April
Castilly, France
- Average rainfall days in April: 15.9 days
The month with the highest number of rainy days is January (19.3 days).
The month with the least rainy days is September (13.1 days).
Average snowfall in April
Castilly, France
- Average snowfall in April: 1mm
The month with the highest snowfall is February (15mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in April
Castilly, France
- Average snowfall days in April: 0.1 days
The month with the highest number of snowfall days is February (2.7 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
Castilly, France
- Average daylight in April: 13h and 48min
The month with the longest days is June (Average daylight: 16h and 12min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in April: 7h and 24min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The months with the least sunshine are January and November (Average sunshine: 3h and 54min).
Average sunshine days in April
Castilly, France
- Average sunshine days in April: 10.9 days
The month with the most sunshine days is September (14.4 days).
The month with the least sunshine days is February (7.6 days).
Average UV index in April
Castilly, France
- Average UV index in April: 3
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in April
Castilly, France
- Average cloud cover in April: 44
The months with the most cloud cover are January and November (Cloud cover 61).
The months with the least cloud cover are July and September (Cloud cover 42).
Average visibility in April
Castilly, France
- Average visibility in April: 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).





