The best times to visit Trondheim for ideal weather are

June 18th to September 2nd

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.



Other Trondheim Travel Info

Weather in Trondheim


Average temperatures in Trondheim vary greatly. Considering humidity, temperatures feel cold for most of the year with a chance of rain or snow throughout most of the year. The area is less temperate than some — in the 14th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Trondheim, the hottest months are July, August, and then June. See average monthly temperatures below. The warmest time of year is generally late July where highs are regularly around 68.7°F (20.4°C) with temperatures rarely dropping below 53.5°F (11.9°C) at night.

Trondheim Temperatures (Fahrenheit)


Trondheim Temperatures (Celsius)


“Feels-Like” Temperatures

The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.

Trondheim Perceived Temperature (F)


Trondheim Perceived Temperature (C)



Average Trondheim Temperatures by Month

Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.

Show Fahrenheit

Month Avg. High (°F) Avg. Mean (°F) Avg. Low (°F)
Jan 32.4 28.4 23.3
Feb 34.4 29.9 24.5
Mar 40.6 35 29.1
Apr 47.3 40.8 34.3
May 55.5 48.5 41.3
Jun 60.7 53.6 46.8
Jul 66.4 59.2 52.3
Aug 64.8 57.7 50.8
Sep 57.4 51 45.1
Oct 48 42.6 37.3
Nov 39.9 35.7 30.8
Dec 35.1 30.5 25.1

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 0.2 -2 -4.8
Feb 1.3 -1.2 -4.2
Mar 4.8 1.7 -1.6
Apr 8.5 4.9 1.3
May 13.1 9.2 5.2
Jun 15.9 12 8.2
Jul 19.1 15.1 11.3
Aug 18.2 14.3 10.4
Sep 14.1 10.6 7.3
Oct 8.9 5.9 2.9
Nov 4.4 2.1 -0.7
Dec 1.7 -0.8 -3.8



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Trondheim are May, July, and then January. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early to mid May. For example, on the week of May 7th there is 1 day of precipitation on average. By contrast, it’s most likely to rain or snow in late November to early December with an average of 3 days of significant precipitation the week of November 26th.

When can you find snow in Trondheim? Weather stations report a good amount of seasonal snow likely to be deepest around January, especially close to mid January. The best time to ski (if at all) in Trondheim is often around around February 12th when fresh powder is deepest. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.

Chance of Precipitation

The graph below shows the % chance of rainy and snowy days in Trondheim.

Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Trondheim (in).

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 24% 5.3 2.3
Feb 32% 2.7 2.7
Mar 32% 1 3.4
Apr 25% 0.4 2
May 20% 0.4 1.8
Jun 26% 0.4 2.6
Jul 23% 0 3.1
Aug 27% 0.4 3
Sep 28% 0.4 3.5
Oct 30% 0.4 2.9
Nov 25% 0.4 3
Dec 29% 1.8 2.9

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 24 13.5 5.8
Feb 32 6.9 6.9
Mar 32 2.5 8.6
Apr 25 1 5.1
May 20 1 4.6
Jun 26 1 6.6
Jul 23 0 7.9
Aug 27 1 7.6
Sep 28 1 8.9
Oct 30 1 7.4
Nov 25 1 7.6
Dec 29 4.6 7.4


Humidity and Wind

Trondheim has some very humid months, with other comfortably humid months. The least humid month is May (58.4% relative humidity), and the most humid month is September (72.3%).

Wind in Trondheim is usually calm. The windiest month is March, followed by January and December. March’s average wind speed of around 6.1 knots (7 MPH or 11.3 KPH) is considered “a light breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early March where average top sustained speeds reach 12.7 knots, which is considered a moderate breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in Trondheim.

Avg. Relative Humidity


The graph below shows wind speed (max and average) in knots.

Max Sustained Wind
Average Daily Wind

Average Wind Speeds

Show Wind Speeds

All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.

Month Avg. Wind Avg. Wind Feel Sustained High Wind High Wind Feel
Jan 5.9 Light breeze 10.8 Gentle breeze
Feb 5.7 Light breeze 10.4 Gentle breeze
Mar 6.1 Light breeze 11 Gentle breeze
Apr 5.4 Light breeze 9.6 Gentle breeze
May 4.9 Light breeze 8.8 Gentle breeze
Jun 4.8 Light breeze 8.3 Gentle breeze
Jul 4.3 Light breeze 7.6 Gentle breeze
Aug 4.3 Light breeze 7.8 Gentle breeze
Sep 4.7 Light breeze 8.6 Gentle breeze
Oct 5.1 Light breeze 9.3 Gentle breeze
Nov 5.1 Light breeze 9.6 Gentle breeze
Dec 5.8 Light breeze 10.4 Gentle breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 66.4%
Feb 66.4%
Mar 61.8%
Apr 61.4%
May 58.4%
Jun 62.9%
Jul 66.5%
Aug 68.4%
Sep 72.3%
Oct 70.8%
Nov 71.3%
Dec 70.4%


Is it Safe to Travel to Trondheim?

Our best data indicates this area is generally safe. As of Oct 07, 2019 there are no travel advisories or warnings for Norway; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Aug 22, 2019.


The Busiest and Least Crowded Months

The busiest month for tourism in Trondheim, Norway is August, followed by April and May. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Trondheim in October. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month


Most Popular Months to Visit

Tourists Seeking Accommodations

Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 61.1 in October means 61.1% of the tourists vs. August.



Overall Trondheim Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 60.5°F (15.8°C) and 39.2°F (4°C) with warmer temperatures in the later months. Rain is somewhat common with 6 to 10 days of significant precipitation per month. Spring is the busiest for tourism, which makes it a good time for those looking for things to do.

Summer (June through August)

The middle-year months have comfortably cool weather with high temperatures that are brisk. These months see the least precipitation with 7 to 8 days of precipitation per month. June – August is the second busiest season for tourism in Trondheim, so lodging and other accommodations may cost slightly more.

Fall (September through November)

Fall daily highs range from 60°F (15.6°C) and 35.7°F (2.1°C), which will feel chilly given the humidity and wind. It rains or snows a significant amount: 8 to 9 days per month. Tourism is the slowest during these months due to the weather, so hotels may be affordably priced.

Winter (December through February)

Weather is far too cold this time of year in Trondheim to be enjoyable for warm weather travelers. The average high during this season is between 39.5°F (4.2°C) and 31.2°F (-0.4°C). On average, it rains or snows a fair amount: 7 to 9 times per month. These times of year are fairly slow with tourists.


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