The best times to visit Solothurn for ideal weather are

May 21st to October 7th

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



Other Solothurn Travel Info

Weather in Solothurn


Average temperatures in Solothurn 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 30th 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 Solothurn, the hottest months are July, August, and then June. See average monthly temperatures below. The warmest time of year is generally early July where highs are regularly around 79.2°F (26.2°C) with temperatures rarely dropping below 57.2°F (14°C) at night.

Solothurn Temperatures (Fahrenheit)


Solothurn 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.

Solothurn Perceived Temperature (F)


Solothurn Perceived Temperature (C)



Average Solothurn 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 39.6 35 29.7
Feb 39.2 32.2 25.8
Mar 53.2 42.2 32.3
Apr 60.7 50.2 39.7
May 66.6 56.2 45.8
Jun 74.1 63.7 53.2
Jul 77.6 66.8 56.2
Aug 77.2 66.1 55.7
Sep 69.2 58.8 49.8
Oct 58.8 50.8 44
Nov 47.7 42.3 37.1
Dec 40.7 35.9 30.6

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 4.2 1.7 -1.3
Feb 4 0.1 -3.4
Mar 11.8 5.7 0.2
Apr 15.9 10.1 4.3
May 19.2 13.4 7.7
Jun 23.4 17.6 11.8
Jul 25.3 19.3 13.4
Aug 25.1 18.9 13.2
Sep 20.7 14.9 9.9
Oct 14.9 10.4 6.7
Nov 8.7 5.7 2.8
Dec 4.8 2.2 -0.8



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Solothurn are March, February, and then September. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early March. For example, on the week of March 5th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in mid December with an average of 3 days of significant precipitation the week of December 17th.

When can you find snow in Solothurn? Weather stations report large amounts of snow likely to be deepest around December, especially close to early to mid December. The best time to ski (if at all) in Solothurn is often around around December 10th 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 Solothurn.

Days with precipitation

Snow on the Ground

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

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 27% 3.2 2.9
Feb 19% 5.9 1.9
Mar 15% 0.7 1.6
Apr 22% 0 2.5
May 27% 0 3.6
Jun 21% 0 3.2
Jul 28% 0 4.8
Aug 21% 0 2.9
Sep 20% 0 3
Oct 23% 0.4 3.5
Nov 24% 0.4 3.5
Dec 32% 7.6 4.6

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 27 8.1 7.4
Feb 19 15 4.8
Mar 15 1.8 4.1
Apr 22 0 6.4
May 27 0 9.1
Jun 21 0 8.1
Jul 28 0 12.2
Aug 21 0 7.4
Sep 20 0 7.6
Oct 23 1 8.9
Nov 24 1 8.9
Dec 32 19.3 11.7


Humidity and Wind

Solothurn has some extremely humid months, and above average humidity throughout the year. The least humid month is July (62.1% relative humidity), and the most humid month is December (90.2%).

Wind in Solothurn is usually calm. The windiest month is February, followed by April and January. February’s average wind speed of around 5 knots (5.7 MPH or 9.2 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 January and early February where average top sustained speeds reach 12.6 knots, which is considered a moderate breeze.

Relative Humidity (%)

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

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 5 Light breeze 10.3 Gentle breeze
Feb 5 Light breeze 9.9 Gentle breeze
Mar 4.9 Light breeze 10.6 Gentle breeze
Apr 5 Light breeze 10.9 Gentle breeze
May 4.9 Light breeze 11.3 Gentle breeze
Jun 4.6 Light breeze 10.7 Gentle breeze
Jul 4.5 Light breeze 10.5 Gentle breeze
Aug 3.6 Barely noticeable 9.2 Gentle breeze
Sep 4.1 Light breeze 9.3 Gentle breeze
Oct 3.4 Barely noticeable 8.2 Gentle breeze
Nov 3.9 Barely noticeable 8.6 Gentle breeze
Dec 4.6 Light breeze 9.6 Gentle breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 86.1%
Feb 77.3%
Mar 66.5%
Apr 64.6%
May 66.3%
Jun 63%
Jul 62.1%
Aug 65.6%
Sep 74%
Oct 84.7%
Nov 88.5%
Dec 90.2%


Is it Safe to Travel to Solothurn?

Our best data indicates this area is generally safe. As of Oct 07, 2019 there are no travel advisories or warnings for Switzerland; 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 Solothurn, Switzerland is June, followed by February and October. 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 Solothurn 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 slightly extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 48.4 in December means 48.4% of the tourists vs. June.



Overall Solothurn Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 69.3°F (20.7°C) and 45.9°F (7.7°C) with warmer temperatures in the later months. Rain is somewhat common with 5 to 8 days of significant precipitation per month. Spring is the slowest for tourism, which makes it a good time for those looking for deals.

Summer (June through August)

The middle-year months have very comfortable 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 Solothurn, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 73.9°F (23.3°C) and 42.8°F (6°C), which will feel chilly given the humidity and wind. It rains or snows a significant amount: 6 to 7 days per month. Tourism is the second busiest during these months due to the weather, so hotels may be slightly higher priced.

Winter (December through February)

Weather is far too cold this time of year in Solothurn to be enjoyable for warm weather travelers. The average high during this season is between 45.9°F (7.7°C) and 35.8°F (2.1°C). On average, it rains or snows a fair amount: 5 to 10 times per month. These times of year are fairly slow with tourists.


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