May weather forecastTrondheim, Norway
May
Weather in May
May is when Trondheim truly blossoms into spring. The once-frozen city starts to warm up with temperatures ranging from 4°C (39.2°F) to 12°C (53.6°F). The snow slowly retreats, replaced by blooming flowers and lush greenery. As the city is still not in the full grasp of summer, it experiences lesser rainfall than in the following months, making May a perfect month to explore the city’s scenic beauty. Towards the end of May, the daylight hours start to approach an impressive 20-hour mark, signifying the impending arrival of the much-anticipated summer season.Temperature
May's onset brings a rise in the average high-temperature, moving from a chilly 6°C (42.8°F) in April to a fresh 12°C (53.6°F). May sees the temperature falling to a mean low of 4°C (39.2°F).Rainfall
The month with the least rainfall in Trondheim, Norway, is May, when the rain falls for 15 days and typically collects 53mm (2.09") of precipitation.Sea temperature
In Trondheim, in May, the average water temperature is 9°C (48.2°F).Note: It is risky to swim in 9°C (48.2°F). Temperatures beneath 10°C (50°F) induce rapid cold shock and hyperventilation.
Daylight
In May, the average length of the day is 18h and 13min.On the first day of the month, sunrise is at 04:53 and sunset at 21:37. On the last day of May, sunrise is at 03:25 and sunset at 23:06 CEST.
Sunshine
May and June, with an average of 7h of sunshine, are months with the most sunshine in Trondheim, Norway.UV index
The average daily maximum UV index in May is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for average individuals.Note: An average UV index of 3 in May transforms into this advice:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
The months with the lowest average high temperature are January and February (0°C).
- Average low temperature in May: 4°C
The months with the highest average low temperature are July and August (9°C).
The 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 least rainfall) is May (53mm).
Average rainfall days in May
Trondheim, Norway
- Average rainfall days in May: 15 days
The months with the highest number of rainy days are September and December (24 days).
The month with the least 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: 18h and 12min
The month with the longest days is June (Average daylight: 20h and 24min).
The month with the shortest days is December (Average daylight: 4h and 42min).
- Average sunshine in May: 7h
The months with the most sunshine are May and June (Average sunshine: 7h).
The months with the least sunshine are January and December (Average sunshine: 0h).
Average UV index in May
Trondheim, Norway
- Average UV index in May: 3
The months with the highest UV index are June and July (UV index 4).
The months with the lowest UV index are January, February, November and December (UV index 0).





