The best times to visit Helsinki for ideal weather are

May 28th 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 Helsinki Travel Info

Weather in Helsinki

Temperature

Average temperatures in Helsinki vary drastically. 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 Helsinki, 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 74.7°F (23.7°C) with temperatures rarely dropping below 60.4°F (15.8°C) at night.

Helsinki Temperatures (Fahrenheit)

Key
High
Average
Low

Helsinki 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.

Helsinki Perceived Temperature (F)

Key
High
Average
Low

Helsinki Perceived Temperature (C)

Key
High
Average
Low

 

Average Helsinki 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 28.8 24.4 19.3
Feb 29.7 25.7 21.2
Mar 36.6 31.3 25.6
Apr 47.2 40.8 34.6
May 58.8 51.5 44.5
Jun 65.5 58.4 51.8
Jul 72.5 65.5 58.7
Aug 69.2 62.7 56.1
Sep 60.3 54.8 49.3
Oct 49.2 44.4 39.3
Nov 42.1 38.6 34.8
Dec 34.6 30.6 26

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan -1.8 -4.2 -7.1
Feb -1.3 -3.5 -6
Mar 2.6 -0.4 -3.6
Apr 8.4 4.9 1.4
May 14.9 10.8 6.9
Jun 18.6 14.7 11
Jul 22.5 18.6 14.8
Aug 20.7 17.1 13.4
Sep 15.7 12.7 9.6
Oct 9.6 6.9 4.1
Nov 5.6 3.7 1.6
Dec 1.4 -0.8 -3.3

 


 

Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Helsinki are April, May, and then July. 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 early December with an average of 3 days of significant precipitation the week of December 3rd.

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

Key
Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Helsinki (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 34% 9.3 2.9
Feb 24% 13 2
Mar 20% 14.9 2
Apr 17% 8.1 1.6
May 17% 0 1.8
Jun 28% 0 2.9
Jul 19% 0 2.3
Aug 29% 0 4.3
Sep 28% 0 3
Oct 25% 0 3
Nov 33% 4 3.1
Dec 39% 11 3.3

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 34 23.6 7.4
Feb 24 33 5.1
Mar 20 37.8 5.1
Apr 17 20.6 4.1
May 17 0 4.6
Jun 28 0 7.4
Jul 19 0 5.8
Aug 29 0 10.9
Sep 28 0 7.6
Oct 25 0 7.6
Nov 33 10.2 7.9
Dec 39 27.9 8.4

 

Humidity and Wind

Helsinki has some extremely humid months, and above average humidity throughout the year. The least humid month is May (61.4% relative humidity), and the most humid month is November (84.6%).

Wind in Helsinki is usually moderate. The windiest month is December, followed by November and March. December’s average wind speed of around 8.3 knots (9.6 MPH or 15.4 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 November to early December where average top sustained speeds reach 12.5 knots, which is considered a moderate breeze.

Relative Humidity (%)

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

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 7.5 Gentle breeze 10.9 Gentle breeze
Feb 6.9 Light breeze 10.2 Gentle breeze
Mar 7.6 Gentle breeze 11.2 Gentle breeze
Apr 6.7 Light breeze 10.6 Gentle breeze
May 6.7 Light breeze 10.5 Gentle breeze
Jun 6.5 Light breeze 10.2 Gentle breeze
Jul 6.4 Light breeze 9.9 Gentle breeze
Aug 6.3 Light breeze 9.7 Gentle breeze
Sep 6.9 Light breeze 10.2 Gentle breeze
Oct 7.2 Gentle breeze 10.5 Gentle breeze
Nov 7.6 Gentle breeze 11.1 Gentle breeze
Dec 8.3 Gentle breeze 12.1 Significant breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 83.5%
Feb 81.6%
Mar 70.2%
Apr 63.6%
May 61.4%
Jun 66%
Jul 68.1%
Aug 72.5%
Sep 79%
Oct 79.2%
Nov 84.6%
Dec 82.9%

 

Is it Safe to Travel to Helsinki?

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 Helsinki, 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 Helsinki 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 very reliable. Displayed data is calculated relative to the peak, so a score of 50.6 in December means 50.6% of the tourists vs. July.

 

 

Overall Helsinki Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 63.6°F (17.6°C) and 34°F (1.1°C) with far warmer temperatures in the later months. Rain is somewhat common with 5 to 6 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 moderate precipitation with 6 to 9 days of precipitation per month. June – August is the busiest season for tourism in Helsinki, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 63.5°F (17.5°C) and 37.5°F (3.1°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 Helsinki to be enjoyable for warm weather travelers. The average high during this season is between 37.1°F (2.8°C) and 26.7°F (-2.9°C). On average, it rains or snows a great amount: 7 to 12 times per month. These times of year are fairly slow with tourists.

 

Best Times to Travel› Finland › Helsinki, Finland