14 day weather forecast

Thun weather August 2026 — 14 day forecast · Switzerland

23°

cloudy · feels like 23°

Updated at
  • Live from Open-Meteo
  • Refreshed several times a day
  • 14 days ahead
  • No tracking · free
Warmest day
Saturday 5 Sept
31°C
highest maximum
Wettest day
Friday 11 Sept
6.6 mm
40% chance
Most sunshine
Friday 4 Sept
13 hours
of sunshine
Trend
14 days
Warmer
From ~24° to ~29°

The next 14 days

swipe →
Avg max, 3 days
25.0°C
Coldest night
14°C
Most sunshine
13.0 h
Wind from
the north

Overview table · August 2026

Thun 14 day forecast, day by day

The table below shows the full 14 day weather forecast for Thun (Switzerland): the maximum and minimum temperature, rainfall in millimetres, the chance of rain, humidity, hours of sunshine and the UV index per day. Across the next two weeks the maximum temperature in Thun averages around 27°C and the minimum around 17°C, with roughly 10 mm of rain in total, 11 dry days and about 166 hours of sunshine.

Last updated:

14 day weather forecast for Thun (Switzerland) per day: temperature, rainfall, chance of rain, humidity, sunshine hours and UV index. Updated in August 2026.
DayWeatherMaxMinRainChanceHumiditySunUV
Saturday29 AugCloudy24°C14°C0 mm5%75%12.4 h6high
Sunday30 AugCloudy27°C15°C0 mm3%71%11.8 h6high
Monday31 AugThunder24°C18°C0 mm28%66%12.6 h5moderate
Tuesday1 SeptCloudy23°C15°C0 mm0%68%12.4 h6high
Wednesday2 SeptCloudy22°C14°C0 mm3%71%8.9 h6high
Thursday3 SeptCloudy26°C15°C0 mm9%64%12.5 h6high
Friday4 SeptCloudy25°C17°C0 mm8%68%13 h5moderate
Saturday5 SeptSunny31°C17°C0 mm7%55%12.9 h6high
Sunday6 SeptLight rain30°C17°C1.2 mm41%73%12.9 h6high
Monday7 SeptCloudy29°C18°C0 mm48%63%12.8 h3moderate
Tuesday8 SeptMostly sunny31°C18°C0 mm26%66%12.8 h5moderate
Wednesday9 SeptMostly sunny29°C18°C0 mm21%70%12.7 h5moderate
Thursday10 SeptLight rain30°C18°C1.8 mm29%75%12.7 h2low
Friday11 SeptLight rain20°C18°C6.6 mm40%89%5.7 h5moderate

The first three to five days of the forecast for Thun are the most reliable; from day seven onwards it is an indicative trend. Click a day in the overview above for hourly detail. Source: Open-Meteo (Met Office, DWD, ECMWF).

Background & outlook

The weather in Thun

Current conditions and the 14 day forecast

Thun lies in Switzerland, an area with a continental climate: cold winters with frost and snow, warm summers, and thunderstorms that build through a hot afternoon. That is exactly why a two-week outlook is useful here — it shows the pattern rather than one snapshot.

What is the weather like in Thun right now?

It is currently 23°C in Thun with cloudy. It feels like 23°C, humidity is 56% and the wind is NNW 8 km/h.

Today (Saturday) reaches a maximum of 24°C and a minimum of 14°C, with 0 mm of rain and 12.4 hours of sunshine. Sunrise is at 06:45 and sunset at 20:15.

Thun weather tomorrow

Tomorrow (Sunday) the maximum temperature in Thun is 27°C and the minimum 15°C. Around 0 mm of rain is expected with 11.8 hours of sunshine, and the chance of rain is 3%. The data is refreshed several times a day through Open-Meteo.

Thun weather this week and next week

Over the coming week the average maximum temperature in Thun sits around 24°C and the average minimum around 15°C. Roughly 0 mm of rain is expected, spread across 0 days, with 0 largely sunny days.

The warmest day in the 14 day forecast for Thun is Saturday 5 Sept at 31°C. The coldest night falls on Saturday 29 Aug at 14°C. Click any day for hourly detail.

Rain, sunshine and UV in Thun

A daily rainfall total says little on its own: the same 5 mm can be one short downpour or a grey day of drizzle, which is why the hourly chart above is often the more useful of the two. Over the next fortnight the highest UV index for Thun is 6 — high enough to warrant sun protection in the middle of the day.

How reliable is a 14 day forecast?

The first three to five days are generally very accurate. After that the certainty drops off and it is better read as a trend than as an exact daily prediction. Our data comes from Open-Meteo, which combines national weather models — among them the Met Office, DWD and ECMWF — and recomputes them several times a day using measurements from stations worldwide.

Forecast for Thun last updated: 29 August 2026 at 14:24. See also all Switzerland forecasts and the European weather map.

Frequently asked questions

Questions about the weather in Thun

What is the weather like in Thun in August 2026?

The forecast at the top of this page shows the current temperature in Thun plus the maximum and minimum for each of the next 14 days, with rainfall, chance of rain, sunshine hours and UV index. It is refreshed several times a day.

How accurate is the 14 day forecast for Thun?

The first three to five days for Thun are highly reliable. From day six onwards, read the forecast as a trend: it shows whether it turns warmer, cooler, wetter or drier rather than an exact value for that day.

Will it rain in Thun this week?

The rainfall chart on this page gives the expected millimetres per day for Thun, and each day card shows the chance of rain as a percentage. Below 20% with several hours of sunshine is a genuinely dry day.

How warm does it get in Thun over the next two weeks?

The temperature chart shows the maximum and minimum for every one of the next 14 days in Thun. The overview table underneath repeats the same figures day by day, together with the average across the fortnight.

Can I see the weather in Thun hour by hour?

Yes. The hourly chart covers the next 48 hours in Thun with temperature, feels-like temperature and chance of rain. Clicking any of the 14 days opens a panel with night, morning, afternoon and evening detail.

Where does the Thun forecast come from?

The data for Thun (Switzerland, Switzerland) comes from Open-Meteo, which combines national weather models such as those of the Met Office, DWD, Météo-France and ECMWF and recomputes them several times a day.

What does the UV index for Thun mean?

The UV index runs from 0 to 11+. Up to 2 is low, 3 to 5 moderate, 6 to 7 high and 8 or more very high. From 6 upwards it is worth using sun protection in the middle of the day, even when it does not feel especially hot.

Is the Thun weather forecast free?

Yes. The full 14 day forecast for Thun is free, needs no account and carries no adverts inside the charts.