The best times to visit Koli 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 Koli Travel Info

Weather in Koli

Temperature

Average temperatures in Koli vary drastically. Considering humidity, temperatures feel cold for most of the year with a fair chance of precipitation about half of the year. The area is less temperate than some — in the 24th 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 Koli, 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 73.9°F (23.3°C) with temperatures rarely dropping below 52.6°F (11.4°C) at night.

Koli Temperatures (Fahrenheit)

Key
High
Average
Low

Koli Temperatures (Celsius)

Key
High
Average
Low

“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.

Koli Perceived Temperature (F)

Key
High
Average
Low

Koli Perceived Temperature (C)

Key
High
Average
Low

 

Average Koli 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 19.1 12.8 5.3
Feb 22.8 16.5 8.7
Mar 32 23.3 12.4
Apr 43.6 35.4 25.8
May 58.4 48.9 37.2
Jun 65.2 56.4 45.2
Jul 71.5 62 51.8
Aug 66.9 57.8 48
Sep 56.9 49.5 41.1
Oct 42.9 38 31.8
Nov 34.5 30.6 25.9
Dec 24.5 19.5 13.4

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan -7.2 -10.7 -14.8
Feb -5.1 -8.6 -12.9
Mar 0 -4.8 -10.9
Apr 6.4 1.9 -3.4
May 14.7 9.4 2.9
Jun 18.4 13.6 7.3
Jul 21.9 16.7 11
Aug 19.4 14.3 8.9
Sep 13.8 9.7 5.1
Oct 6.1 3.3 -0.1
Nov 1.4 -0.8 -3.4
Dec -4.2 -6.9 -10.3

 


 

Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Koli are February, March, and then May. 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 February. For example, on the week of February 12th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in mid July with an average of 3 days of significant precipitation the week of July 16th.

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

Key
Days with precipitation

Snow on the Ground

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

Key
Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 13% 11.4 1
Feb 10% 16.7 0.7
Mar 11% 16.1 0.9
Apr 14% 9.7 1.1
May 12% 1.2 1.2
Jun 17% 0 2.1
Jul 27% 0 3.1
Aug 18% 0 2.4
Sep 22% 0.8 2.4
Oct 21% 3 2.1
Nov 18% 3.3 1.7
Dec 17% 4.9 1.3

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 13 29 2.5
Feb 10 42.4 1.8
Mar 11 40.9 2.3
Apr 14 24.6 2.8
May 12 3 3
Jun 17 0 5.3
Jul 27 0 7.9
Aug 18 0 6.1
Sep 22 2 6.1
Oct 21 7.6 5.3
Nov 18 8.4 4.3
Dec 17 12.4 3.3

 

Humidity and Wind

Koli has some extremely humid months, with other comfortably humid months. The least humid month is May (55.4% relative humidity), and the most humid month is November (88.3%).

Wind in Koli is usually calm. The windiest month is October, followed by May and March. October’s average wind speed of around 5.5 knots (6.3 MPH or 10.1 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 mid April where average top sustained speeds reach 10.5 knots, which is considered a gentle breeze.

Relative Humidity (%)

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

Key
Avg. Relative Humidity

Wind

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

Key
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 4 Light breeze 7 Gentle breeze
Feb 4.5 Light breeze 7.5 Gentle breeze
Mar 5.1 Light breeze 9.1 Gentle breeze
Apr 4.7 Light breeze 9.1 Gentle breeze
May 5.2 Light breeze 9.3 Gentle breeze
Jun 4.8 Light breeze 8.8 Gentle breeze
Jul 4.3 Light breeze 8 Gentle breeze
Aug 4.1 Light breeze 7.4 Gentle breeze
Sep 4.7 Light breeze 8.2 Gentle breeze
Oct 5.5 Light breeze 8.9 Gentle breeze
Nov 5 Light breeze 8.1 Gentle breeze
Dec 4.7 Light breeze 7.8 Gentle breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 82.4%
Feb 80%
Mar 68.4%
Apr 61.9%
May 55.4%
Jun 61%
Jul 69.5%
Aug 74%
Sep 81.1%
Oct 83.3%
Nov 88.3%
Dec 84%

 

Is it Safe to Travel to Koli?

Our best data indicates this area is generally safe. As of Dec 04, 2023 there are no travel advisories or warnings for Finland; 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 Dec 04, 2023.


 

The Busiest and Least Crowded Months

The busiest month for tourism in Koli, Finland is July, followed by June and January. 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 Koli in December. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month

 

Most Popular Months to Visit

Key
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 50.7 in December means 50.7% of the tourists vs. July.

 

 

Overall Koli Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 65.2°F (18.4°C) and 29.3°F (-1.5°C) with far warmer temperatures in the later months. Rain is rare with 3 to 4 days of significant precipitation per month. Spring is the second 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 the most precipitation with 5 to 8 days of precipitation per month. June – August is the busiest season for tourism in Koli, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 61.3°F (16.3°C) and 29.8°F (-1.2°C), which will feel chilly given the humidity and wind. It rains or snows a significant amount: 5 to 7 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 Koli to be enjoyable for warm weather travelers. The average high during this season is between 29.3°F (-1.5°C) and 16.5°F (-8.6°C). On average, it rains or snows a fair amount: 3 to 5 times per month. These times of year are fairly slow with tourists.

 

Best Times to Travel› Finland › Koli, Finland