May weather forecast
Tromsø, Norway

The bridge connecting the city of Tromsø, Norway
The bridge connecting the city of Tromsø, Norway

Weather in May

The last month of the spring, May, is another cold month in Tromsø, Norway, with an average temperature varying between 5°C (41°F) and 0.8°C (33.4°F).

Temperature

In Tromsø, the average high-temperature in May marginally rises from a wintry 0.7°C (33.3°F) in April to a still cold 5°C (41°F). The average low-temperature, in May, is 0.8°C (33.4°F).

Humidity

In Tromsø, the average relative humidity in May is 85%.

Rainfall

In Tromsø, during May, the rain falls for 14.3 days and regularly aggregates up to 77mm (3.03") of precipitation. Throughout the year, there are 148.1 rainfall days, and 987mm (38.86") of precipitation is accumulated.

Snowfall

January through June, September through December are months with snowfall in Tromsø. In Tromsø, in May, snow falls for 7.9 days, with typically accumulated 182mm (7.17") of snow. In Tromsø, during the entire year, snow falls for 120.1 days and aggregates up to 2826mm (111.26") of snow.

Sea temperature

In Tromsø, Norway, in May, the average water temperature is 6.2°C (43.2°F).
Note: Swimming in 6.2°C (43.2°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.

Daylight

In Tromsø, the average length of the day in May is 11h and 16min.

Sunshine

In May, the average sunshine is 4.1h.

UV index

In Tromsø, the average daily maximum UV index in May is 2. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the average person.
Note: The average daily UV index of 2 in May transform into the following instructions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in May in Tromsø?

In May, in Tromsø, the average high-temperature is 5°C (41°F), and the average low-temperature is 0.8°C (33.4°F).

What is the average humidity in May in Tromsø?

In Tromsø, the average relative humidity in May is 85%.

How much does it rain in Tromsø in May?

In May, in Tromsø, the rain falls for 14.3 days. Throughout May, 77mm (3.03") of precipitation is accumulated.

How many days does it snow in May in Tromsø?

In Tromsø, Norway, in May, during 7.9 snowfall days, 182mm (7.17") of snow is typically accumulated.

What is the sea water temperature in May in Tromsø?

In May, the average sea temperature in Tromsø is 6.2°C (43.2°F). Swimming in 6.2°C (43.2°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.

How many hours of daylight does Tromsø have in May?

In May, the average day length is 11h and 16min.

How long on average sun shines in May in Tromsø?

The average sunshine duration in May in Tromsø is 4.1h.

What is the UV index intensity in May in Tromsø?

In May, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Tromsø, Norway

Average temperature in May - Tromsø, Norway
  • Average high temperature in May: 5°C

The warmest month (with the highest average high temperature) is July (13.9°C).
The month with the lowest average high temperature is January (-4.5°C).

  • Average low temperature in May: 0.8°C

The month with the highest average low temperature is July (8.7°C).
The coldest month (with the lowest average low temperature) is February (-9.1°C).

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Average pressure in May
Tromsø, Norway

Average pressure in May - Tromsø, Norway
  • Average pressure in May: 1013.8mbar

The month with the highest atmospheric pressure is May (1013.8mbar).
The month with the lowest atmospheric pressure is December (1000.7mbar).

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Average wind speed in May
Tromsø, Norway

Average wind speed in May - Tromsø, Norway
  • Average wind speed in May: 12.8km/h

The windiest month (with the highest average wind speed) is March (17km/h).
The calmest month (with the lowest average wind speed) is July (9.5km/h).

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Average humidity in May
Tromsø, Norway

Average humidity in May - Tromsø, Norway
  • Average humidity in May: 85%

The month with the highest relative humidity is April (89%).
The month with the lowest relative humidity is July (79%).

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Average rainfall in May
Tromsø, Norway

Average rainfall in May - Tromsø, Norway
  • Average rainfall in May: 77mm

The wettest month (with the highest rainfall) is March (103mm).
The driest month (with the least rainfall) is July (55mm).

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Average rainfall days in May
Tromsø, Norway

Average rainfall days in May - Tromsø, Norway
  • Average rainfall days in May: 14.3 days

The month with the highest number of rainy days is June (19.3 days).
The month with the least rainy days is February (4.7 days).

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Average snowfall in May
Tromsø, Norway

Average snowfall in May - Tromsø, Norway
  • Average snowfall in May: 182mm

The month with the highest snowfall is March (569mm).
The months with the least snowfall are July and August (0mm).

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Average snowfall days in May
Tromsø, Norway

Average snowfall days in May - Tromsø, Norway
  • Average snowfall days in May: 7.9 days

The month with the highest number of snowfall days is March (22.9 days).
The months with the least snowfall days are July and August (0 days).

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Average sea temperature in May
Tromsø, Norway

Average sea temperature in May - Tromsø, Norway
  • Average sea temperature in May: 6.2°C

The best month for swimming (with the highest average sea temperature) is August (11.3°C).
The coldest month (with the lowest average sea temperature) is March (4.2°C).

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Average daylight in May /
Average sunshine in May
Tromsø, Norway

Average daylight in May / Average sunshine in May - Tromsø, Norway
  • Average daylight in May: 11h and 16min

The month with the longest days is August (Average daylight: 18h and 1min).
The months with the shortest days are June and December (Average daylight: 0h and 0min).

  • Average sunshine in May: 4h and 6min

The month with the most sunshine is August (Average sunshine: 8h and 0min).
The month with the least sunshine is December (Average sunshine: 0h and 24min).

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Average sunshine days in May
Tromsø, Norway

Average sunshine days in May - Tromsø, Norway
  • Average sunshine days in May: 9.9 days

The month with the most sunshine days is January (13.2 days).
The month with the least sunshine days is March (6.2 days).

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Average UV index in May
Tromsø, Norway

Average UV index in May - Tromsø, Norway
  • Average UV index in May: 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 1).

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Average cloud cover in May
Tromsø, Norway

Average cloud cover in May - Tromsø, Norway
  • Average cloud cover in May: 65

The month with the most cloud cover is March (Cloud cover 75).
The month with the least cloud cover is July (Cloud cover 58).

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Average visibility in May
Tromsø, Norway

Average visibility in May - Tromsø, Norway
  • Average visibility in May: 8km

The months with the highest visibility are June, July, August, September, October and November (9km).
The month with the lowest visibility is April (7km).

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