Trondheim
Norway
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Trondheim, Norway

May, the last month of the spring, in Trondheim, is a cool month, with average temperature ranging between min 4°C (39.2°F) and max 12°C (53.6°F).

Temperature

In Trondheim, Norway, the average high-temperature increases, from a chilly 6°C (42.8°F) in April, to a cool 12°C (53.6°F). The average low-temperature, in Trondheim, Norway, is 4°C (39.2°F).

Rainfall

The month with the least rainfall is May when the rain falls for 15 days and typically collects 53mm (2.1") of precipitation.

Sea temperature

In Trondheim, the average seawater temperature is 9°C (48.2°F).
Note: At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.

Daylight

The average length of the day in May is 18.2h.

Sunshine

May and June, with an average of 7h of sunshine, are months with the most sunshine.

UV index

In Trondheim, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to the UV radiation for the average person.
Note: The daily maximum UV index of 3 in May interpret into the following advice:
Take precautions - Protection against 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. 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.

What is the temperature in May in Trondheim?

The average high-temperature, in May, is 12°C (53.6°F), while the average low-temperature is 4°C (39.2°F).

How much does it rain in Trondheim in May?

In Trondheim, Norway, during May, the rain falls for 15 days and regularly aggregates up to 53mm (2.1") of precipitation.

What is the driest month in Trondheim?

May is the month with the least rainfall in Trondheim, Norway. Rain falls for 15 days and accumulates 53mm (2.1") of precipitation.

What is the water temperature in May in Trondheim?

In May, the average sea temperature in Trondheim, Norway, is 9°C (48.2°F). Swimming in 9°C (48.2°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.

How many hours of daylight does Trondheim have in May?

The average length of the day in May in Trondheim, Norway, is 18.2h.

What are the months with the most sunshine in Trondheim?

May and June, with an average of 7h of sunshine, are months with the most sunshine in Trondheim.

How many hours of sunshine does Trondheim have in May?

In Trondheim, the average sunshine in May is 7h.

How high is the UV index in May in Trondheim?

In May, the average daily maximum UV index in Trondheim is 3. A UV Index reading of 3 to 5 represents a medium health risk from unprotected exposure to the UV radiation.
Average temperature in May - Trondheim, Norway
  • Average high temperature in May: 12°C

The warmest month (with the highest average high temperature) is August (17°C).
Months with the lowest average high temperature are January and February (0°C).

  • Average low temperature in May: 4°C

Months with the highest average low temperature are July and August (9°C).
Coldest months (with the lowest average low temperature) are January and February (-5°C).

Average rainfall in May - Trondheim, Norway
  • Average rainfall in May: 53mm

The wettest month (with the highest rainfall) is September (133mm).
The driest month (with the lowest rainfall) is May (53mm).

Average rainfall days in May - Trondheim, Norway
  • Average rainfall days in May: 15 days

Months with the highest number of rainy days are September and December (24 days).
The month with the lowest number of rainy days is May (15 days).

Average sea temperature in May - Trondheim, Norway
  • Average sea temperature in May: 9°C

The best month for swimming (with the highest average sea temperature) is August (14.8°C).
The coldest month (with the lowest average sea temperature) is March (4.9°C).

Average daylight in May / Average sunshine in May - Trondheim, Norway
  • Average daylight in May: 18.2h

The month with the longest days is June (Average daylight: 20.4h).
The month with shortest days is December (Average daylight: 4.7h).

  • Average sunshine in May: 7h

Months with most sunshine are May and June (Average sunshine: 7h).
Months with least sunshine are January and December (Average sunshine: 0).

Average UV index in May - Trondheim, Norway
  • Average UV index in May: 3

Months with the highest UV index are June and July (UV index 4).
Months with the lowest UV index are January, February, November and December (UV index 0).