April weather forecastKeldur, Iceland
April
Weather in April
April is a chilly spring month in Keldur, Iceland, with an average temperature fluctuating between 6.1°C (43°F) and 3.3°C (37.9°F).Temperature
Keldur experiences an average high-temperature of a chilly 6.1°C (43°F) in April, subtly different from March's 4.8°C (40.6°F). In Keldur, a slight decrease from the daytime peak is noted during the month of April, with an average low-temperature of 3.3°C (37.9°F).Humidity
The average relative humidity in April in Keldur is 76%.Rainfall
In Keldur, Iceland, during April, the rain falls for 19.9 days and regularly aggregates up to 89mm (3.5") of precipitation. Throughout the year, there are 215.2 rainfall days, and 1116mm (43.94") of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Keldur, Iceland, in April, during 2.8 snowfall days, 39mm (1.54") of snow is typically accumulated. Throughout the year, in Keldur, there are 32.4 snowfall days, and 397mm (15.63") of snow is accumulated.Daylight
In April, the average length of the day in Keldur is 15h and 6min.On the first day of the month, sunrise is at 06:36 and sunset at 20:11. On the last day of April, sunrise is at 04:55 and sunset at 21:39 GMT.
Sunshine
The average sunshine in April in Keldur is 6h.UV index
The months with the lowest UV index are January through April, October through December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for the average person.Note: The maximum UV index of 2 during April leads to these instructions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Tightly woven clothing, when worn loosely, shields effectively against the Sun. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Keldur, Iceland
- Average high temperature in April: 6.1°C
The warmest months (with the highest average high temperature) are July and August (12.3°C).
The month with the lowest average high temperature is December (4.5°C).
- Average low temperature in April: 3.3°C
The months with the highest average low temperature are July and August (9.7°C).
The coldest months (with the lowest average low temperature) are March and December (1.9°C).
Average pressure in April
Keldur, Iceland
- Average pressure in April: 1009.1mbar
The month with the highest atmospheric pressure is June (1013.8mbar).
The month with the lowest atmospheric pressure is January (996.8mbar).
Average wind speed in April
Keldur, Iceland
- Average wind speed in April: 30.4km/h
The windiest month (with the highest average wind speed) is February (34.7km/h).
The calmest month (with the lowest average wind speed) is July (19.5km/h).
Average humidity in April
Keldur, Iceland
- Average humidity in April: 76%
The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is December (73%).
Average rainfall in April
Keldur, Iceland
- Average rainfall in April: 89mm
The wettest month (with the highest rainfall) is January (130mm).
The driest month (with the least rainfall) is June (48mm).
Average rainfall days in April
Keldur, Iceland
- Average rainfall days in April: 19.9 days
The month with the highest number of rainy days is September (21.5 days).
The month with the least rainy days is June (15 days).
Average snowfall in April
Keldur, Iceland
- Average snowfall in April: 39mm
The month with the highest snowfall is March (115mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in April
Keldur, Iceland
- Average snowfall days in April: 2.8 days
The month with the highest number of snowfall days is March (7.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Keldur, Iceland
- Average daylight in April: 15h and 6min
The month with the longest days is June (Average daylight: 20h and 36min).
The month with the shortest days is December (Average daylight: 4h and 36min).
- Average sunshine in April: 6h and 0min
The months with the most sunshine are May, June and July (Average sunshine: 8h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).
Average sunshine days in April
Keldur, Iceland
- Average sunshine days in April: 6.7 days
The month with the most sunshine days is June (12.8 days).
The month with the least sunshine days is March (5.8 days).
Average UV index in April
Keldur, Iceland
- Average UV index in April: 2
The month with the highest UV index is July (UV index 4).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).
Average cloud cover in April
Keldur, Iceland
- Average cloud cover in April: 62
The month with the most cloud cover is March (Cloud cover 65).
The months with the least cloud cover are May and August (Cloud cover 55).
Average visibility in April
Keldur, Iceland
- Average visibility in April: 9km
The months with the highest visibility are May and June (10km).
The months with the lowest visibility are January, February, March, April, July, August, September, October, November and December (9km).
