Climate and monthly weather forecastThun, Switzerland

Climate and monthly weather forecast

The climate of Thun

Thun, Switzerland finds itself nestled within the Köppen climate classification Cfb, marine west coast, with its warm summers. Its geographical location blesses it with a mix of wet and dry days, offering a distinctive panorama of weather conditions.

On a yearly scale, Thun's average daily temperatures fluctuate from a biting -6.5°C (20.3°F) in the winter months to a pleasant 20.1°C (68.2°F) in July, the warmest month. The least chilly month is also July with the low-temperature average at 9.3°C (48.7°F) while the cruelest winter low sweeps in at -7 in February. Relative humidity hovers around the mid-80s with slight dips to 79 in July and August.

Precipitation and snowfall take their own turns on stage: rain falls most heavily during May, yielding 117mm (4.61"). Despite that, it rains the most number of days in June and July, approximately 21 days. A snow lovers delight, Thun experiences the most snowfall in December and January with a significant drop to 0mm (0") from June to September.

Sunshine hours do a grand reveal during the months of July and August, boasting 10.2 and 10 hours daily, respectively. Conversely, December offers the least sunshine with its tight 5.3 hours only.

The best time to visit Thun

Eyeing a trip to Thun? The best time to visit would arguably be late spring and early summer, around May and June. The weather achieves an appealing balance during this period: temperatures ascend to a comfortable 13°C (55.4°F) to 17.7°C (63.9°F), relatively low precipitation occurs and amounts to 112mm (4.41") to 117mm (4.61"), and over half the day, from 15.1 hours to 15.8 hours, rewards with daylight. It leads to extended exploring in the heart of Switzerland. The UV index is also moderate at this time, which suggests safe conditions for outdoor activities.

The worst time to visit Thun

While each season holds its charm, the harsh reality of winter bears down the most between December to February in Thun. Temperatures converge on lows reaching -7°C (19.4°F). In concert with this, snowfall ascends to noteworthy 191mm (7.52") to 204mm (8.03") with snowfall observed on 7.9 days to 11.8 days. The daylight hours are minimal as well, doling out a mere 8.6 hours to 10.3 hours. This combination could curtail outdoor activities and exploration plans, rendering it a less than optimal period for tourists.

Spring weather in Thun

Spring bursts forth in Thun with temperatures gradually climbing from 5.1°C (41.2°F) in March to a welcome 13°C (55.4°F) towards May. Rainfall vacillates between 63mm (2.48") to 117mm (4.61") on an average, potentially allotting for damp early spring days. Fortunately, such weather circumstances are paired with escalating daylight hours from 11.9 hours to 15.1 hours allowing ample time for sightseeing.

Summer weather in Thun

During summer, Thun's temperatures stretch enjoyably from 17.7°C (63.9°F) to 20.1°C (68.2°F), on average, between June to August. Predicted rainfall can reach its zenith at 112mm (4.41") in June and taper off to 108mm (4.25") by August. Concurrently, daylight and sunshine reveal their plentitude, offering up to 15.8 hours and 10.2 hours, respectively, in the month of June.

Autumn weather in Thun

Autumn sees a gradual cooling trend in Thun, with temperatures declining from 15.6°C (60.1°F) in September to a more frigid 5.7°C (42.3°F) by November. Rainfall fluctuates in the range of 53mm (2.09") in September and peaks to 78mm (3.07") in November. The number of daylight hours lessens over these months, with the shortest being 9.4 hours in November.

Winter weather in Thun

Winter bites fiercely in Thun between December to February. With a high of 2.3°C (36.1°F) to a low of -7°C (19.4°F), snowfall hangs heavy at 191mm (7.52") in December and rises slightly to 204mm (8.03") in January. Daylight dwindles to a scant 8.6 hours in December. However, with snow blanketing the city, it could provide a dazzling spectacle for those who find joy in the hush of the winter season.

Weather in January

The weather in Thun, Switzerland begins the year with a cold note. Relative humidity is at a high 87%, with an average snowfall of 191mm (7.52") over 11.8 days. This makes for a against the beautiful backdrop of mountains. Travel should be planned with care as the temperatures can range from a low of -6.5°C (20.3°F) up to a high of 0.8°C (33.4°F). Weather in January »

Weather in February

February continues the winter trend in the city of Thun. During this month, careful planning would be prudent as the weather conditions can be challenging with an increased snowfall, clocking in at 204mm (8.03") over approximately 10.6 days. Weather in February »

Weather in March

As winter morphs into spring in Thun, there is a marked change in weather conditions. Still draped in its winter coat, the city in March experiences a decline in snowfall to 139mm (5.47") spread across 6.7 days. A rise in temperature can be noted with a range from -3.6°C (25.5°F) to 5.1°C (41.2°F). Weather in March »

Weather in April

With the advent of April, the weather in Thun takes a turn towards warmer conditions. Snowfall trickles down to 47mm (1.85") occurring over 1.6 days, revealing a landscape poised for spring. The temperature swing ranges from 0.5°C (32.9°F) to 10.2°C (50.4°F), providing a noticeable increase in warmth from March. Weather in April »

Weather in May

The merry month of May presents milder weather conditions. The landscape of Thun shifts completely into spring mode with a scant snowfall of 6mm (0.24") over just 0.3 days. Temperatures span from a comfortable 3.3°C (37.9°F) to a warm 13°C (55.4°F), making it a delightful time to visit. Weather in May »

Weather in June

The arrival of June signifies the start of summer in Thun, Switzerland. The snow completely retreats, showcasing the thriving alpine vegetation. Temperature fluctuations between 7.4°C (45.3°F) and 17.7°C (63.9°F) epitomize pleasant Swiss summers. Weather in June »

Weather in July

July, in the heart of summer, offers the warmest conditions. The temperature oscillates between 9.3°C (48.7°F) and a summer high of 20.1°C (68.2°F). Rain remains a companion with regular intervals, nurturing the verdant landscapes. Weather in July »

Weather in August

Nearing summer's end, August weather continues to offer a warm, sun-drenched experience. Slightly lower temperatures, fluctuating between 8.8°C (47.8°F) and 19.9°C (67.8°F), mark the onset of the fall. The lush scenery and 14.2 hours of daylight captured during daytime provide picture-perfect light conditions for photography enthusiasts. Weather in August »

Weather in September

The month of September initiates the season of fall in Thun with notable changes in weather patterns. The temperature range shrinks from 5.5°C (41.9°F) to 15.6°C (60.1°F), setting the stage for cooler months to come. This period manifests a distinctive autumnal charm with colorful trees and comfortable weather, inviting for explorations and hikes. The average high-temperature in Thun, Switzerland, slightly decreases in September, shifting from an enjoyable 19.9°C (67.8°F) in August to a moderate 15.6°C (60.1°F). Weather in September »

Weather in October

October in Thun is tinged with the autumn hues. A notable drop in the temperature spectrum between 2.7°C (36.9°F) and 11.5°C (52.7°F) hints at the winter waiting in the wings. This month exhibits a fascinating blend of late autumn aura with billowing clouds, vibrant foliage, and misty mornings, characteristic of the Swiss city. The commencement of October indicates a gentle shift in the average high-temperature, receding from September's refreshing 15.6°C (60.1°F) to a cool 11.5°C (52.7°F). Weather in October »

Weather in November

November marks the arrival of winter with a spectacular display of nature's transition. November anticipates the forthcoming winter, with temperatures dipping from -1.4°C (29.5°F) to 5.7°C (42.3°F) and an imminent increase in snowfall to 98mm (3.86") within the span of 4.7 days. Weather in November »

Weather in December

December brings the full-blown winter season to Thun, Switzerland. The city, draped in a winter blanket, gets covered with 208mm (8.19") of snow over 7.9 days. Temperature fluctuations range from a chilly -5.3°C (22.5°F) to 2.3°C (36.1°F), indicative of the brisk weather. Weather in December »

Frequently asked questions

Thun's January weather, marked by an average high temperature of 0.8°C (33.4°F) and an average low temperature of -6.5°C (20.3°F), is the coldest in the year.

In Thun, Switzerland, during the entire year, the rain falls for 197 days and collects up to 1016mm (40") of precipitation.

January through May, October through December are months with snowfall.

In Thun, during the entire year, snow falls for 44.2 days and aggregates up to 902mm (35.51") of snow.

The months with the least sunshine in Thun are January, February and December, with an average of 5.3h of sunshine.

January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Thun, Switzerland.

With an average relative humidity of 88%, February is the most humid month in Thun.

The month with the most rainfall in Thun, Switzerland, is May, when the rain falls for 21.8 days and typically aggregates up to 117mm (4.61") of precipitation.

June through September are months without snowfall.

With an average of 15h and 48min of daylight, June has the longest days of the year.

June through August, with an average maximum UV index of 4, are months with the highest UV index in Thun, Switzerland.

July brings the highest temperatures in Thun, with an average high of 20.1°C (68.2°F) and an average low of 9.3°C (48.7°F).

July and August, with an average relative humidity of 79%, are the least humid months.

The month with the most sunshine in Thun is July, with an average of 10.2h of sunshine.

The month with the least rainfall in Thun is September, when the rain falls for 15.9 days and typically collects 53mm (2.09") of precipitation.

On Sunday, 27. October 2024, at 03:00, Daylight Saving Time ends, and the time zone changes from CEST to CET. The next Daylight Saving Time starts on Sunday, 30. March 2025, at 02:00, and the time zone reverts from CET to CEST.

The month with the most snowfall in Thun is December, when snow falls for 7.9 days and typically aggregates up to 208mm (8.19") of snow.

December has the shortest days of the year in Thun, with an average of 8h and 36min of daylight.

Average temperature
Thun, Switzerland

The warmest month (with the highest average high temperature) is July (20.1°C).
The month with the lowest average high temperature is January (0.8°C).

The month with the highest average low temperature is July (9.3°C).
The coldest month (with the lowest average low temperature) is February (-7°C).

Average pressure
Thun, Switzerland

The month with the highest atmospheric pressure is December (1021mbar).
The month with the lowest atmospheric pressure is April (1015.4mbar).

Average wind speed
Thun, Switzerland

The windiest month (with the highest average wind speed) is December (8.3km/h).
The calmest month (with the lowest average wind speed) is August (6km/h).

Average humidity
Thun, Switzerland

The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are July and August (79%).

Average rainfall
Thun, Switzerland

The wettest month (with the highest rainfall) is May (117mm).
The driest month (with the least rainfall) is September (53mm).

Average rainfall days
Thun, Switzerland

The month with the highest number of rainy days is May (21.8 days).
The month with the least rainy days is February (11.8 days).

Average snowfall
Thun, Switzerland

The month with the highest snowfall is December (208mm).
The months with the least snowfall are June, July, August and September (0mm).

Average snowfall days
Thun, Switzerland

The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine
Thun, Switzerland

The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 18min).

Average sunshine days
Thun, Switzerland

The month with the most sunshine days is October (14.8 days).
The month with the least sunshine days is May (6.8 days).

Average UV index
Thun, Switzerland

The months with the highest UV index are June, July and August (UV index 4).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

Average cloud cover
Thun, Switzerland

The month with the most cloud cover is February (Cloud cover 48).
The months with the least cloud cover are August and October (Cloud cover 35).

Average visibility
Thun, Switzerland

The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (8km).
The month with the lowest visibility is February (7km).