The best times to visit Grimstad for ideal weather are

May 21st to September 23rd

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



Other Grimstad Travel Info

Weather in Grimstad


Average temperatures in Grimstad vary greatly. Considering humidity, temperatures feel cold for about half of the year and otherwise nice with a chance of rain or snow throughout most of the year. The area is less temperate than some — in the 25th 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 Grimstad, 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 72.7°F (22.6°C) with temperatures rarely dropping below 55.1°F (12.8°C) at night.

Grimstad Temperatures (Fahrenheit)


Grimstad 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.

Grimstad Perceived Temperature (F)


Grimstad Perceived Temperature (C)



Average Grimstad 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 34.8 30.5 25.1
Feb 39.5 33.3 27.1
Mar 46.1 38.3 31
Apr 51.3 43.1 35
May 60.1 52.5 43.8
Jun 65.8 58.5 49.3
Jul 71 62.9 53.7
Aug 68.5 60.5 52.2
Sep 63.8 55.6 48.4
Oct 53.6 47.2 41.3
Nov 46.1 40.8 35.1
Dec 40.7 35.8 29.6

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 1.6 -0.8 -3.8
Feb 4.2 0.7 -2.7
Mar 7.8 3.5 -0.6
Apr 10.7 6.2 1.7
May 15.6 11.4 6.6
Jun 18.8 14.7 9.6
Jul 21.7 17.2 12.1
Aug 20.3 15.8 11.2
Sep 17.7 13.1 9.1
Oct 12 8.4 5.2
Nov 7.8 4.9 1.7
Dec 4.8 2.1 -1.3



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Grimstad are July, September, and then March. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around mid July. For example, on the week of July 16th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in early January with an average of 4 days of significant precipitation the week of January 1st.

When can you find snow in Grimstad? Weather stations report no annual snow. 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 Grimstad.

Days with precipitation

Snow on the Ground

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

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 44% 0 6.7
Feb 24% 0 3.3
Mar 20% 0 3.2
Apr 23% 0 3.2
May 25% 0 4
Jun 24% 0 3.7
Jul 19% 0 2.5
Aug 31% 0 5
Sep 20% 0 4.9
Oct 36% 0 6.2
Nov 40% 0 7.1
Dec 43% 0 6

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 44 0 17
Feb 24 0 8.4
Mar 20 0 8.1
Apr 23 0 8.1
May 25 0 10.2
Jun 24 0 9.4
Jul 19 0 6.4
Aug 31 0 12.7
Sep 20 0 12.4
Oct 36 0 15.7
Nov 40 0 18
Dec 43 0 15.2


Humidity and Wind

Grimstad has some extremely humid months, with other comfortably humid months. The least humid month is April (59.4% relative humidity), and the most humid month is November (81%).

Wind in Grimstad is usually calm. The windiest month is January, followed by December and October. January’s average wind speed of around 6 knots (6.9 MPH or 11.1 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 late December where average top sustained speeds reach 11.4 knots, which is considered a moderate breeze.

Relative Humidity (%)

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

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 6 Light breeze 9 Gentle breeze
Feb 5 Light breeze 8.1 Gentle breeze
Mar 5.3 Light breeze 8.7 Gentle breeze
Apr 5.1 Light breeze 9.2 Gentle breeze
May 5.1 Light breeze 8.6 Gentle breeze
Jun 4.8 Light breeze 8.2 Gentle breeze
Jul 4.7 Light breeze 8 Gentle breeze
Aug 4.4 Light breeze 8 Gentle breeze
Sep 4.4 Light breeze 7.7 Gentle breeze
Oct 5.3 Light breeze 8.6 Gentle breeze
Nov 5.3 Light breeze 8.8 Gentle breeze
Dec 5.8 Light breeze 10.1 Gentle breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 78.8%
Feb 74.6%
Mar 64.6%
Apr 59.4%
May 61.9%
Jun 60.7%
Jul 63.9%
Aug 71.5%
Sep 75.1%
Oct 75.9%
Nov 81%
Dec 79.2%


Is it Safe to Travel to Grimstad?

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 Grimstad, Norway is March, followed by June and July. 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 Grimstad 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 1.1 in October means 1.1% of the tourists vs. March.



Overall Grimstad Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 66.5°F (19.2°C) and 42.9°F (6.1°C) with warmer temperatures in the later months. Rain is somewhat common with 6 to 8 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 6 to 10 days of precipitation per month. June – August is the second busiest season for tourism in Grimstad, so lodging and other accommodations may cost slightly more.

Fall (September through November)

Fall daily highs range from 66.1°F (18.9°C) and 43°F (6.1°C), which will feel chilly given the humidity and wind. It rains or snows a significant amount: 6 to 12 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 Grimstad to be enjoyable for warm weather travelers. The average high during this season is between 43.9°F (6.6°C) and 30.1°F (-1.1°C). On average, it rains or snows a great amount: 7 to 14 times per month. These times of year are fairly slow with tourists.


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