Thun

Planning a trip or a stroll? Check out the latest weather information for Thun, including detailed forecasts and charts provided below.

The climate in Thun can be described as moderate continental, significantly influenced by the nearby Alps and the lake. The weather here features a distinct change of seasons, allowing travelers to enjoy nature's diversity: from the fresh greenery of spring to snowy winter landscapes. Overall, the climate is quite mild without extreme heat, though there are cool periods that require a thoughtful approach to your wardrobe.

Summers in the city are usually warm and comfortable, but rarely sweltering. During the warmest months, July and August, average daytime temperatures rise to 22°C, creating ideal conditions for sightseeing and outdoor activities. Winter brings cooler weather: in January and February, temperatures often hover around 0°C or dip slightly below, which is typical for the Swiss foothills.

Travelers should take note of the fairly frequent precipitation throughout the year. According to statistics, the number of overcast or rainy days remains high in any month, peaking in May and June (with up to 19 days of precipitation). Regardless of when you plan to visit Thun, it is recommended to bring an umbrella and waterproof clothing, as the weather can be quite changeable.

The temperature regime in Thun is characterized by pronounced seasonality, typical for regions in the Alpine foothills. The coldest month of the year is traditionally January, when the average temperature stays around -0.6°C, and night frosts reach an average of -3.9°C. Winter here feels bracing and fresh but without extreme frosts: even in December and February, daytime figures often rise slightly above zero, to 3°C, creating a relatively mild atmosphere.

The summer season brings pleasant but not exhausting warmth to the city. The highest temperatures are recorded in July, when the daytime air warms up to an average of 22.4°C. This time is ideal for excursions and walks by the lake, as there is practically no intense heat. June and August also offer comfortable conditions: the daytime thermometer fluctuates between 20°C and 22°C, making summer in Thun very attractive for those who do not tolerate heat well.

When planning your travel wardrobe, it is important to consider significant daily temperature fluctuations, especially during the warm season. The difference between the daytime maximum and nighttime minimum in summer is about 10 degrees. For example, after a warm July day (22°C), the night brings coolness at around 12°C. Therefore, while enjoying the Swiss summer, don't forget to bring a cozy sweater or a light jacket for evening outings.

Precipitation in Thun is distributed fairly evenly throughout the year, so an umbrella or a quality raincoat can come in handy for a traveler in almost any season. In winter, especially in December and January, when average temperatures hover around zero or drop below, rain often gives way to picturesque snowfalls. December stands out as one of the cloudiest winter months, with precipitation recorded on an average of 18 days.

Spring and early summer bring an increase in rainy days, which is characteristic of Switzerland's climate in the Alpine foothills. May and June lead the way in terms of wet weather — statistically, precipitation can occur up to 19 days per month. During this period, rains are often brief but intense, contributing to the lush blooming of the city's flora.

A relatively "dry" period can be considered the end of winter and mid-spring: in February and April, the number of days with precipitation drops to 12–13, making this a good time for walks if you are prepared for the cool air. In autumn, the weather stabilizes with a moderate level of humidity (about 14 rainy days per month), creating a cozy atmosphere for exploring the city's ancient architecture.

When packing for a trip to Thun, it is best to follow the principle of layering, as the weather in this region of Switzerland can be unpredictable. Even in the height of summer, when average daytime temperatures are a comfortable 20–22°C, evenings can be crisp, so a light windbreaker, fleece, or sweater will be essential. In winter, when the thermometer often drops below freezing, you will definitely need a warm coat or down jacket, as well as a hat, scarf, and gloves.

Special attention should be paid to moisture protection. Statistics show that precipitation in Thun is quite frequent throughout the year — anywhere from 12 to 19 days a month can be rainy or snowy. Therefore, a compact umbrella or a high-quality raincoat should be in your luggage regardless of the season. For the winter months and early spring, waterproof insulated footwear is crucial, allowing you to walk comfortably even in damp weather.

For exploring the city and its picturesque surroundings, choose the most comfortable flat shoes possible. Thun is perfect for long walks through the historic center and along the waterfronts, so it’s best not to break in new shoes on your trip — opt for tried-and-tested sneakers or trekking boots instead. Also, don't forget sunglasses and sunscreen: the mountain sun can be very intense even on cloudy days, especially if you plan on lakeside walks or climbing to higher elevations.