The best times to visit Lake Saimaa for ideal weather are

June 4th 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 Lake Saimaa Travel Info

Weather in Lake Saimaa


Average temperatures in Lake Saimaa vary an incredible amount. 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 15th 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 Lake Saimaa, 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 75.9°F (24.4°C) with temperatures rarely dropping below 53.2°F (11.8°C) at night.

Lake Saimaa Temperatures (Fahrenheit)


Lake Saimaa 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.

Lake Saimaa Perceived Temperature (F)


Lake Saimaa Perceived Temperature (C)



Average Lake Saimaa 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 20.1 13.9 6.9
Feb 23.5 17.6 10.2
Mar 33.9 25.9 15.7
Apr 46.3 37.5 27
May 60.2 50.2 37
Jun 66.7 57.4 44.6
Jul 73.1 63.2 50.7
Aug 69.2 58.9 46.7
Sep 59.6 51.1 41.6
Oct 44.8 38.7 31.5
Nov 36.7 32.8 28.3
Dec 26.2 21 14.7

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan -6.6 -10.1 -13.9
Feb -4.7 -8 -12.1
Mar 1.1 -3.4 -9.1
Apr 7.9 3.1 -2.8
May 15.7 10.1 2.8
Jun 19.3 14.1 7
Jul 22.8 17.3 10.4
Aug 20.7 14.9 8.2
Sep 15.3 10.6 5.3
Oct 7.1 3.7 -0.3
Nov 2.6 0.4 -2.1
Dec -3.2 -6.1 -9.6



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Lake Saimaa are April, May, and then February. 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 is 1 day of precipitation on average. By contrast, it’s most likely to rain or snow in early to mid June with an average of 4 days of significant precipitation the week of June 11th.

When can you find snow in Lake Saimaa? 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 Lake Saimaa 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 Lake Saimaa.

Days with precipitation

Snow on the Ground

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

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 32% 13.8 2.7
Feb 18% 20.2 1.4
Mar 20% 18.3 1.6
Apr 15% 12.7 1.4
May 16% 0 1.5
Jun 30% 0 3.5
Jul 24% 0 2.8
Aug 26% 0 3.5
Sep 27% 0 3
Oct 30% 1.2 2.8
Nov 35% 3.1 2.9
Dec 39% 6.6 3.2

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 32 35.1 6.9
Feb 18 51.3 3.6
Mar 20 46.5 4.1
Apr 15 32.3 3.6
May 16 0 3.8
Jun 30 0 8.9
Jul 24 0 7.1
Aug 26 0 8.9
Sep 27 0 7.6
Oct 30 3 7.1
Nov 35 7.9 7.4
Dec 39 16.8 8.1


Humidity and Wind

Lake Saimaa has some extremely humid months, with other comfortably humid months. The least humid month is May (58.6% relative humidity), and the most humid month is November (91.1%).

Wind in Lake Saimaa is usually calm. The windiest month is May, followed by March and April. May’s average wind speed of around 5.7 knots (6.6 MPH or 10.6 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 early May where average top sustained speeds reach 11.3 knots, which is considered a moderate breeze.

Relative Humidity (%)

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

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 4.5 Light breeze 7.6 Gentle breeze
Feb 4.6 Light breeze 7.6 Gentle breeze
Mar 5.5 Light breeze 9.2 Gentle breeze
Apr 5.3 Light breeze 9.8 Gentle breeze
May 5.7 Light breeze 10.4 Gentle breeze
Jun 4.9 Light breeze 8.9 Gentle breeze
Jul 4.5 Light breeze 8.4 Gentle breeze
Aug 4.3 Light breeze 8.1 Gentle breeze
Sep 4.7 Light breeze 8.1 Gentle breeze
Oct 5 Light breeze 8.4 Gentle breeze
Nov 5.1 Light breeze 8 Gentle breeze
Dec 5.1 Light breeze 8.4 Gentle breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 86.5%
Feb 84.7%
Mar 69%
Apr 62.8%
May 58.6%
Jun 64.1%
Jul 70.6%
Aug 75.1%
Sep 82.2%
Oct 84.4%
Nov 91.1%
Dec 87.9%


Is it Safe to Travel to Lake Saimaa?

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 Lake Saimaa, 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 Lake Saimaa 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

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 Lake Saimaa Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 65.6°F (18.7°C) and 31.1°F (-0.5°C) with far warmer temperatures in the later months. Rain is somewhat common with 4 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 7 to 9 days of precipitation per month. June – August is the busiest season for tourism in Lake Saimaa, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 64.2°F (17.9°C) and 31.4°F (-0.3°C), which will feel chilly given the humidity and wind. It rains or snows a significant amount: 8 to 11 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 Lake Saimaa to be enjoyable for warm weather travelers. The average high during this season is between 31.1°F (-0.5°C) and 16.4°F (-8.7°C). On average, it rains or snows a fair amount: 5 to 12 times per month. These times of year are fairly slow with tourists.


Best Times to TravelFinland › Lake Saimaa, Finland