Weather in April
Temperature
The shift from March to April in Longyearbyen sees a slight increase in the average high-temperature, transitioning from an extreme cold -13°C (8.6°F) to a subzero cold -9°C (15.8°F). Throughout April, Longyearbyen experiences a low-temperature average of -16°C (3.2°F).Rainfall
In Longyearbyen, in April, during 3 rainfall days, 16mm (0.63") of precipitation is typically accumulated. Throughout the year, there are 86 rainfall days, and 271mm (10.67") of precipitation is accumulated.Snowfall
January through December are months with snowfall. In April, in Longyearbyen, snow falls for 17 days. Throughout the year, in Longyearbyen, there are 176 snowfall days.Sea temperature
February and April, with an average sea temperature of 1°C (33.8°F), are months with the coldest seawater in Longyearbyen.Note: In the sport of swimming, this scenario is extremely cold, treacherous, and fatal. If not protected by insulated waterproof clothing, hypothermia ensues quickly.
Daylight
In Longyearbyen, the average length of the day in April is 11h and 11min.Sunshine
The average sunshine in April in Longyearbyen, Svalbard and Jan Mayen, is 7.6h.UV index
In April, the average daily maximum UV index in Longyearbyen, Svalbard and Jan Mayen, is 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.Note: A daily high UV index of 1 in April leads to these guidelines:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Frequently asked questions
How cold is it in Longyearbyen in April?
How many days does it rain in April in Longyearbyen?
How many days does it snow in April in Longyearbyen?
What months are the sea coldest in Longyearbyen?
What is the sea temperature in April in Longyearbyen?
What is the average length of the day in April in Longyearbyen?
How long on average sun shines in April in Longyearbyen?
What is the UV index reading in April in Longyearbyen?
Average temperature in April
Longyearbyen, Svalbard and Jan Mayen
- Average high temperature in April: -9°C
The warmest month (with the highest average high temperature) is July (7°C).
The months with the lowest average high temperature are January, February and March (-13°C).
- Average low temperature in April: -16°C
The month with the highest average low temperature is July (3°C).
The coldest month (with the lowest average low temperature) is February (-21°C).
Average rainfall in April
Longyearbyen, Svalbard and Jan Mayen
- Average rainfall in April: 16mm
The wettest month (with the highest rainfall) is August (30mm).
The driest month (with the least rainfall) is May (13mm).
Average rainfall days in April
Longyearbyen, Svalbard and Jan Mayen
- Average rainfall days in April: 3 days
The month with the highest number of rainy days is August (18 days).
The months with the least rainy days are January, February and March (2 days).
Average snowfall days in April
Longyearbyen, Svalbard and Jan Mayen
- Average snowfall days in April: 17 days
The months with the highest number of snowfall days are November and December (22 days).
The month with the least snowfall days is July (1 days).
Average sea temperature in April
Longyearbyen, Svalbard and Jan Mayen
- Average sea temperature in April: 1°C
The best month for swimming (with the highest average sea temperature) is August (6°C).
The coldest months (with the lowest average sea temperature) are February and April (1°C).
Average daylight in April /
Average sunshine in April
Longyearbyen, Svalbard and Jan Mayen
- Average daylight in April: 11h and 1min
The month with the longest days is September (Average daylight: 14h and 30min).
The months with the shortest days are January, May, June, July, November and December (Average daylight: 0h and 0min).
- Average sunshine in April: 7h and 4min
The month with the most sunshine is May (Average sunshine: 8h and 12min).
The months with the least sunshine are January, February, November and December (Average sunshine: 0h and 0min).
Average UV index in April
Longyearbyen, Svalbard and Jan Mayen
- Average UV index in April: 1
The months with the highest UV index are May, June and July (UV index 2).
The months with the lowest UV index are January, February, March, October, November and December (UV index 0).
Longyearbyen, Svalbard and Jan Mayen
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