April weather forecastGrimstad, Norway
April
Weather in April
April is a chilly spring month in Grimstad, Norway, with an average temperature varying between 8.6°C (47.5°F) and 4.1°C (39.4°F).Temperature
In April, the meteorological conditions subtly change with the average high-temperature edging from a cold 4.1°C (39.4°F) in March to a chilly 8.6°C (47.5°F). During April's nights, Grimstad notes a minor temperature decline, reaching an average of 4.1°C (39.4°F).Humidity
The average relative humidity in April is 73%.Rainfall
The month with the least rainfall in Grimstad is April, when the rain falls for 10.6 days and typically collects 25mm (0.98") of precipitation.Snowfall
January through April, November and December are months with snowfall. April is the last month it regularly snows. During 0.8 snowfall days, in April, Grimstad aggregates 10mm (0.39") of snow. Throughout the year, there are 33.8 snowfall days, and 320mm (12.6") of snow is accumulated.Sea temperature
In Grimstad, the average seawater temperature in April is 6.5°C (43.7°F).Note: Navigating the 6.5°C (43.7°F) at 13°C (55.4°F) is no joy, and temperatures less than 10°C (50°F) can threaten breathing and cause a chilling shock, gauging personal stamina.
Daylight
In Grimstad, the average length of the day in April is 14h and 27min.On the first day of the month, sunrise is at 06:51 and sunset at 20:07. On the last day of April, in Grimstad, sunrise is at 05:32 and sunset at 21:13 CEST.
Sunshine
In Grimstad, the average sunshine in April is 8.9h.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 unprotected exposure to Sun's UV rays for the average person.Note: The daily maximum UV index of 3 in April interprets into the following advice:
Undertake protective steps - Preventing sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Grimstad, Norway
- Average high temperature in April: 8.6°C
The warmest month (with the highest average high temperature) is July (19.1°C).
The month with the lowest average high temperature is February (1.6°C).
- Average low temperature in April: 4.1°C
The months with the highest average low temperature are July and August (13.2°C).
The coldest month (with the lowest average low temperature) is February (-1.6°C).
Average pressure in April
Grimstad, Norway
- Average pressure in April: 1014.6mbar
The month with the highest atmospheric pressure is April (1014.6mbar).
The month with the lowest atmospheric pressure is December (1007.8mbar).
Average wind speed in April
Grimstad, Norway
- Average wind speed in April: 16.9km/h
The windiest month (with the highest average wind speed) is November (21.5km/h).
The calmest month (with the lowest average wind speed) is June (16.1km/h).
Average humidity in April
Grimstad, Norway
- Average humidity in April: 73%
The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are May and June (71%).
Average rainfall in April
Grimstad, Norway
- Average rainfall in April: 25mm
The wettest months (with the highest rainfall) are October and November (65mm).
The driest month (with the least rainfall) is April (25mm).
Average rainfall days in April
Grimstad, Norway
- Average rainfall days in April: 10.6 days
The month with the highest number of rainy days is November (16.8 days).
The month with the least rainy days is February (8.7 days).
Average snowfall in April
Grimstad, Norway
- Average snowfall in April: 10mm
The month with the highest snowfall is January (106mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in April
Grimstad, Norway
- Average snowfall days in April: 0.8 days
The month with the highest number of snowfall days is January (9.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in April
Grimstad, Norway
- Average sea temperature in April: 6.5°C
The best month for swimming (with the highest average sea temperature) is August (18.2°C).
The coldest month (with the lowest average sea temperature) is March (3.4°C).
Average daylight in April /
Average sunshine in April
Grimstad, Norway
- Average daylight in April: 14h and 24min
The month with the longest days is June (Average daylight: 18h and 12min).
The month with the shortest days is December (Average daylight: 6h and 30min).
- Average sunshine in April: 8h and 54min
The month with the most sunshine is June (Average sunshine: 11h and 24min).
The month with the least sunshine is December (Average sunshine: 3h and 6min).
Average sunshine days in April
Grimstad, Norway
- Average sunshine days in April: 16.9 days
The month with the most sunshine days is May (18.5 days).
The month with the least sunshine days is November (7.7 days).
Average UV index in April
Grimstad, Norway
- Average UV index in April: 3
The months with the highest UV index are May, June, July, August and September (UV index 4).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in April
Grimstad, Norway
- Average cloud cover in April: 40
The month with the most cloud cover is November (Cloud cover 63).
The month with the least cloud cover is July (Cloud cover 35).
Average visibility in April
Grimstad, Norway
- Average visibility in April: 10km
The months with the highest visibility are April, May, June, July, August and September (10km).
The months with the lowest visibility are January, February, March, October, November and December (9km).
