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.
Helsinki Travel Guide
Other Helsinki Travel Info
Weather in Helsinki
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)
Helsinki Temperatures (Celsius)
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)
Helsinki Perceived Temperature (C)
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.
|Month||Avg. High (°F)||Avg. Mean (°F)||Avg. Low (°F)|
|Month||Avg. High (°C)||Avg. Mean (°C)||Avg. Low (°C)|
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.
Snow on the Ground
The graph below shows the average snow on the ground in Helsinki (in).
Average Rain and Snow by Month
|Month||Daily Chance of Rain||Average Snow Depth (in)||Total Precipitation (in)|
|Month||Daily Chance of Rain||Average Snow Depth (cm)||Total Precipitation (cm)|
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.
The graph below shows wind speed (max and average) in knots.
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|
Is it Safe to Travel to Helsinki?
Our best data indicates this area is generally safe. As of Oct 07, 2019 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 Aug 22, 2019.
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
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.