May weather forecast and climate
Longyearbyen, Svalbard and Jan Mayen

The frozen Arctic Blue Sea overlooking the snow-covered mountains in the background, on a sunny winter morning, in Longyearbyen, Svalbard and Jan Mayen
The frozen Arctic Blue Sea overlooking the snow-covered mountains in the background, on a sunny winter morning, in Longyearbyen, Svalbard and Jan Mayen
May, the last month of the spring, in Longyearbyen, is another freezing cold month, with average temperature fluctuating between -3°C (26.6°F) and -7°C (19.4°F).

Temperature

In May, the average high-temperature rises, from a subzero cold -9°C (15.8°F) in April, to a still freezing cold -3°C (26.6°F). The average low-temperature, in Longyearbyen, is -7°C (19.4°F).

Rainfall

The month with the least rainfall in Longyearbyen is May when the rain falls for 4 days and typically collects 13mm (0.51") of precipitation.

Snowfall

January through December are months with snowfall. In May, snow falls for 16 days. In Longyearbyen, during the entire year, snow falls for 176 days.

Sea temperature

In May, the average sea temperature is 2°C (35.6°F).
Note: For swimming, this is considered very dangerous and immediately life-threatening. Total loss of breathing control instantly occurs, and clear thinking becomes almost impossible. A specialized swimsuit is obligatory to minimize thermal loss.

Daylight

Months with the longest days in Longyearbyen, Svalbard and Jan Mayen, are May through July, with an average of 24h of daylight.

Sunshine

May has the most sunshine of the year in Longyearbyen, with an average of 8.2h of sunshine.

UV index

Months with the highest UV index are May through July, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low health risk from unsafe exposure to the UV radiation for the ordinary person.
Note: The daily maximum UV index of 2 in May interpret into the following advice:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in May in Longyearbyen?

The average high-temperature, in May, is -3°C (26.6°F), while the average low-temperature is -7°C (19.4°F).

How much does it rain in Longyearbyen in May?

In Longyearbyen, Svalbard and Jan Mayen, in May, it is raining for 4 days, with typically 13mm (0.51") of accumulated precipitation.

What is the driest month in Longyearbyen?

The month with the least rainfall is May when the rain falls for 4 days and typically collects 13mm (0.51") of precipitation.

How many days does it snow in May in Longyearbyen?

In Longyearbyen, Svalbard and Jan Mayen, during May, snow falls for 16 days.

What is the sea temperature in May in Longyearbyen?

In May, the average sea temperature is 2°C (35.6°F). For swimming, this is considered life-threatening and very dangerous. The water feels painfully cold, and hyperventilation quickly occurs. A specialized swimsuit is mandatory to reduce thermal damage.

When are the longest days in Longyearbyen?

May through July, with an average of 24h of daylight, are months with the longest days in Longyearbyen, Svalbard and Jan Mayen.

What is the average length of the day in May in Longyearbyen?

In May, the average length of the day is 24h.

What month has the most sunshine in Longyearbyen?

With an average of 8.2h of sunshine, May has the most sunshine of the year.

How many hours of sunshine does Longyearbyen have in May?

In Longyearbyen, the average sunshine in May is 8.2h.

When is the highest UV index in Longyearbyen?

May through July, with an average maximum UV index of 2, are months with the highest UV index in Longyearbyen.

What is the UV index reading in May in Longyearbyen?

In Longyearbyen, Svalbard and Jan Mayen, the average daily maximum UV index in May is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from the exposure to the Sun's UV rays.
Average temperature in May - Longyearbyen, Svalbard and Jan Mayen
  • Average high temperature in May: -3°C

The warmest month (with the highest average high temperature) is July (7°C).
Months with the lowest average high temperature are January, February and March (-13°C).

  • Average low temperature in May: -7°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 May - Longyearbyen, Svalbard and Jan Mayen
  • Average rainfall in May: 13mm

The wettest month (with the highest rainfall) is August (30mm).
The driest month (with the least rainfall) is May (13mm).

Average rainfall days in May - Longyearbyen, Svalbard and Jan Mayen
  • Average rainfall days in May: 4 days

The month with the highest number of rainy days is August (18 days).
Months with the least rainy days are January, February and March (2 days).

Average snowfall days in May - Longyearbyen, Svalbard and Jan Mayen
  • Average snowfall days in May: 16 days

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 May - Longyearbyen, Svalbard and Jan Mayen
  • Average sea temperature in May: 2°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 May / Average sunshine in May - Longyearbyen, Svalbard and Jan Mayen
  • Average daylight in May: 24h

Months with the longest days are May, June and July (Average daylight: 24h).
Months with the shortest days are January, November and December (Average daylight: 0h).

  • Average sunshine in May: 8.2h

The month with the most sunshine is May (Average sunshine: 8.2h).
Months with the least sunshine are January, February, November and December (Average sunshine: 0).

Average UV index in May - Longyearbyen, Svalbard and Jan Mayen
  • Average UV index in May: 2

Months with the highest UV index are May, June and July (UV index 2).
Months with the lowest UV index are January, February, March, October, November and December (UV index 0).