April weather forecastSlemmestad, Norway
April
Weather in April
April is a chilly spring month in Slemmestad, Norway, with an average temperature fluctuating between 9.1°C (48.4°F) and 1.3°C (34.3°F).Temperature
April's onset brings a rise in the average high-temperature, moving from a wintry 2.2°C (36°F) in March to a frosty 9.1°C (48.4°F). April nights experience a consistent temperature drop to a wintry 1.3°C (34.3°F).Humidity
In April, the average relative humidity in Slemmestad is 74%.Rainfall
April is the month with the least rainfall in Slemmestad. Rain falls for 10.9 days and accumulates 13mm (0.51") of precipitation.Snowfall
January through May, October through December are months with snowfall in Slemmestad, Norway. In April, it is snowing for 1.8 days. Throughout April, 6mm (0.24") of snow is accumulated. Throughout the year, in Slemmestad, there are 42.9 snowfall days, and 271mm (10.67") of snow is accumulated.Sea temperature
In Slemmestad, the average seawater temperature in April is 6.4°C (43.5°F).Note: Without suitable protection, venturing into 6.4°C (43.5°F) waters cooler than 10°C (50°F) can lead to pronounced cold shock and rapid breaths.
Daylight
In Slemmestad, the average length of the day in April is 14h and 35min.On the first day of the month, sunrise is at 06:41 and sunset at 20:01. On the last day of April, sunrise is at 05:17 and sunset at 21:12 CEST.
Sunshine
In Slemmestad, the average sunshine in April is 8h.UV index
In April, the average daily maximum UV index in Slemmestad is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: In April, the maximum UV index of 3 suggests this advice:
Ensure safety - Recommendations to avert sunburn are presented. To guard against the harmful effects of the Sun, minimize exposure during midday. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Slemmestad, Norway
- Average high temperature in April: 9.1°C
The warmest month (with the highest average high temperature) is July (20.4°C).
The month with the lowest average high temperature is January (-2.4°C).
- Average low temperature in April: 1.3°C
The month with the highest average low temperature is July (10.8°C).
The coldest month (with the lowest average low temperature) is February (-7.8°C).
Average pressure in April
Slemmestad, Norway
- Average pressure in April: 1014.5mbar
The month with the highest atmospheric pressure is April (1014.5mbar).
The month with the lowest atmospheric pressure is December (1008mbar).
Average wind speed in April
Slemmestad, Norway
- Average wind speed in April: 9.5km/h
The windiest month (with the highest average wind speed) is January (9.9km/h).
The calmest month (with the lowest average wind speed) is August (8.3km/h).
Average humidity in April
Slemmestad, Norway
- Average humidity in April: 74%
The month with the highest relative humidity is February (91%).
The month with the lowest relative humidity is May (71%).
Average rainfall in April
Slemmestad, Norway
- Average rainfall in April: 13mm
The wettest month (with the highest rainfall) is July (40mm).
The driest month (with the least rainfall) is April (13mm).
Average rainfall days in April
Slemmestad, Norway
- Average rainfall days in April: 10.9 days
The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in April
Slemmestad, Norway
- Average snowfall in April: 6mm
The month with the highest snowfall is March (73mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in April
Slemmestad, Norway
- Average snowfall days in April: 1.8 days
The month with the highest number of snowfall days is January (10.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in April
Slemmestad, Norway
- Average sea temperature in April: 6.4°C
The best month for swimming (with the highest average sea temperature) is August (17.8°C).
The coldest month (with the lowest average sea temperature) is March (3.2°C).
Average daylight in April /
Average sunshine in April
Slemmestad, Norway
- Average daylight in April: 14h and 36min
The month with the longest days is June (Average daylight: 18h and 36min).
The month with the shortest days is December (Average daylight: 6h and 6min).
- Average sunshine in April: 8h and 0min
The month with the most sunshine is June (Average sunshine: 11h and 24min).
The months with the least sunshine are January and December (Average sunshine: 3h and 12min).
Average sunshine days in April
Slemmestad, Norway
- Average sunshine days in April: 15.3 days
The month with the most sunshine days is December (18.3 days).
The month with the least sunshine days is July (10.6 days).
Average UV index in April
Slemmestad, Norway
- Average UV index in April: 3
The months with the highest UV index are May, June, July and August (UV index 4).
The months with the lowest UV index are January and February (UV index 1).
Average cloud cover in April
Slemmestad, Norway
- Average cloud cover in April: 47
The month with the most cloud cover is February (Cloud cover 65).
The month with the least cloud cover is June (Cloud cover 45).
Average visibility in April
Slemmestad, Norway
- Average visibility in April: 9km
The months with the highest visibility are April, May and June (9km).
The month with the lowest visibility is February (6km).
