The best times to visit Trondelag 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 Trondelag Travel Info

Weather in Trondelag


Average temperatures in Trondelag 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 16th 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 Trondelag, the hottest months are July, August, and then June. See average monthly temperatures below. The warmest time of year is generally early July where highs are regularly around 69.6°F (20.9°C) with temperatures rarely dropping below 53°F (11.7°C) at night.

Trondelag Temperatures (Fahrenheit)


Trondelag 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.

Trondelag Perceived Temperature (F)


Trondelag Perceived Temperature (C)



Average Trondelag 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 34 28.3 22.2
Feb 35.5 29.8 23.7
Mar 41.4 35.2 28.5
Apr 48.3 41.4 34
May 56.7 49.3 41.2
Jun 61.8 54.7 47.1
Jul 67.5 60.2 52.5
Aug 66.2 58.7 50.9
Sep 58.6 51.9 45.2
Oct 49.2 43.2 36.8
Nov 40.5 35.6 29.6
Dec 36.9 30.3 23.6

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 1.1 -2.1 -5.4
Feb 1.9 -1.2 -4.6
Mar 5.2 1.8 -1.9
Apr 9.1 5.2 1.1
May 13.7 9.6 5.1
Jun 16.6 12.6 8.4
Jul 19.7 15.7 11.4
Aug 19 14.8 10.5
Sep 14.8 11.1 7.3
Oct 9.6 6.2 2.7
Nov 4.7 2 -1.3
Dec 2.7 -0.9 -4.7



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Trondelag are May, January, and then November. 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 January. For example, on the week of January 8th there is 1 day of precipitation on average. By contrast, it’s most likely to rain or snow in late October with an average of 3 days of significant precipitation the week of October 22nd.

When can you find snow in Trondelag? Weather stations report very large amounts of snow likely to be deepest around January, especially close to early to mid January. The best time to ski (if at all) in Trondelag is often around around January 15th 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 Trondelag.

Days with precipitation

Snow on the Ground

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

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 22% 23.3 1.9
Feb 34% 18.4 3.2
Mar 34% 12.9 4.2
Apr 28% 6.7 2.4
May 17% 4.3 1.8
Jun 30% 0 3.5
Jul 29% 0 3
Aug 31% 0 3.4
Sep 28% 0 3.1
Oct 32% 1.7 3.3
Nov 25% 13.6 3
Dec 35% 20.3 3.7

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 22 59.2 4.8
Feb 34 46.7 8.1
Mar 34 32.8 10.7
Apr 28 17 6.1
May 17 10.9 4.6
Jun 30 0 8.9
Jul 29 0 7.6
Aug 31 0 8.6
Sep 28 0 7.9
Oct 32 4.3 8.4
Nov 25 34.5 7.6
Dec 35 51.6 9.4


Humidity and Wind

Trondelag has some very humid months, with other comfortably humid months. The least humid month is May (58.5% relative humidity), and the most humid month is November (72.4%).

Wind in Trondelag is usually moderate. The windiest month is March, followed by January and February. March’s average wind speed of around 8.5 knots (9.8 MPH or 15.8 KPH) is considered “a gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in late December where average top sustained speeds reach 19.2 knots, which is considered a fresh breeze.

Relative Humidity (%)

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

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 8.4 Gentle breeze 16.1 Significant breeze
Feb 8.3 Gentle breeze 15.7 Significant breeze
Mar 8.5 Gentle breeze 17.1 Significant breeze
Apr 7.9 Gentle breeze 15.5 Significant breeze
May 7.4 Gentle breeze 14.9 Significant breeze
Jun 8.3 Gentle breeze 15.6 Significant breeze
Jul 7.2 Gentle breeze 14.9 Significant breeze
Aug 6.7 Light breeze 13.8 Significant breeze
Sep 7 Gentle breeze 14.3 Significant breeze
Oct 7.4 Gentle breeze 14.7 Significant breeze
Nov 7.5 Gentle breeze 15.1 Significant breeze
Dec 8 Gentle breeze 15.8 Significant breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 64.4%
Feb 65.1%
Mar 62.2%
Apr 61.2%
May 58.5%
Jun 64.1%
Jul 67.4%
Aug 68%
Sep 72.3%
Oct 71.1%
Nov 72.4%
Dec 70.4%


Is it Safe to Travel to Trondelag?

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 Trondelag, 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 Trondelag 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 Trondelag Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 61.4°F (16.3°C) and 39.8°F (4.3°C) with warmer temperatures in the later months. Rain is somewhat common with 5 to 11 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 comfortable. These months see moderate precipitation with about 9 days of precipitation per month. June – August is the second busiest season for tourism in Trondelag, so lodging and other accommodations may cost slightly more.

Fall (September through November)

Fall daily highs range from 61.6°F (16.4°C) and 37°F (2.8°C), which will feel chilly given the humidity and wind. It rains or snows a significant amount: 8 to 10 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 Trondelag to be enjoyable for warm weather travelers. The average high during this season is between 39.8°F (4.3°C) and 32.4°F (0.2°C). On average, it rains or snows a fair amount: 7 to 11 times per month. These times of year are fairly slow with tourists.


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