How warm is it in Interlaken in July?

Daytime highs averaged 17.8 °C, night-time lows 8.7 °C. The highest value of the past 10 years was 26.5 °C (30 Jul 2026), the lowest 1.9 °C (9 Jul 2025).

How often does it rain in Interlaken in July?

On average there were 17.8 rain days (at least 1 mm) with 143 mm of precipitation in total.

🇨🇭 Weather in Interlaken in July

This is what the weather in Interlaken (Bernese Oberland, Switzerland) was like in July in 2017–2026.

Key facts at a glance

Prevailing weather: Light rain

Avg. daytime high

17.8 °C

15.8 °C – 20.6 °C

Avg. night-time low

8.7 °C

7.3 °C – 9.8 °C

Avg. rain days in period

17.8

57 % of days · ≥ 1.0 mm

Avg. precipitation in period

143 mm

51.2 mm – 336 mm

Avg. sunshine per day

n/a

Sunshine duration is not available from this data source.

Avg. sea temperature

–

No sea nearby – no sea temperature.

Extremes: Highest temperature 26.5 °C (30 Jul 2026) · Lowest temperature 1.9 °C (9 Jul 2025) · Avg. daily peak wind 11 km/h

Weather mix of all days

67Sunny
60Partly cloudy
5Cloudy
93Light rain
85Rain

Summary

On average 17.8 °C during the day and 8.7 °C at night.
On average 17.8 rain days (Rain day = at least 1.0 mm of precipitation) with 143 mm of precipitation in total.
Prevailing: Light rain.
Warmest year: 2026 (avg. 20.6 °C), coolest: 2025 (avg. 15.8 °C).
Wettest year: 2021 (336 mm), driest: 2026 (51.2 mm).
Extremes: 26.5 °C on 30 Jul 2026 and 1.9 °C on 9 Jul 2025.

Overall values from all 10 years. How is this calculated?

Temperatures per year

Average over your travel period

Precipitation & rain days

Year by year

2026
Avg. max20.6°Avg. min9.7°
Rain days
10 Rain days
Precipitation
51.2 mm
Avg. sunshine per day
n/a
Sea temperature
–
Max 26.5 °C · Min 5.1 °C
2025
Avg. max15.8°Avg. min7.3°
Rain days
23 Rain days
Precipitation
218 mm
Avg. cloud cover
63 % cloudy
Sea temperature
–
Max 21.6 °C · Min 1.9 °C
2024
Avg. max18.3°Avg. min9.8°
Rain days
21 Rain days
Precipitation
159 mm
Avg. cloud cover
60 % cloudy
Sea temperature
–
Max 23.8 °C · Min 2.8 °C
2023
Avg. max18.1°Avg. min8.7°
Rain days
18 Rain days
Precipitation
134 mm
Avg. cloud cover
61 % cloudy
Sea temperature
–
Max 23.8 °C · Min 2.7 °C
2022
Avg. max19.3°Avg. min9.2°
Rain days
10 Rain days
Precipitation
107 mm
Avg. cloud cover
35 % cloudy
Sea temperature
–
Max 24.2 °C · Min 5.6 °C
2021
Avg. max15.9°Avg. min7.4°
Rain days
23 Rain days
Precipitation
336 mm
Avg. cloud cover
68 % cloudy
Sea temperature
–
Max 20.6 °C · Min 3.3 °C
2020
Avg. max17.4°Avg. min8.1°
Rain days
16 Rain days
Precipitation
90.3 mm
Avg. cloud cover
49 % cloudy
Sea temperature
–
Max 22.3 °C · Min 2.2 °C
2019
Avg. max17.8°Avg. min9.2°
Rain days
18 Rain days
Precipitation
112 mm
Avg. cloud cover
60 % cloudy
Sea temperature
–
Max 23.6 °C · Min 3.3 °C
2018
Avg. max17.8°Avg. min9.1°
Rain days
17 Rain days
Precipitation
100 mm
Avg. cloud cover
48 % cloudy
Sea temperature
–
Max 22.0 °C · Min 6.0 °C
2017
Avg. max16.7°Avg. min8.1°
Rain days
22 Rain days
Precipitation
121 mm
Avg. cloud cover
67 % cloudy
Sea temperature
–
Max 21.3 °C · Min 2.9 °C

Frequently asked questions

How warm is it in Interlaken in July?: Daytime highs averaged 17.8 °C, night-time lows 8.7 °C. The highest value of the past 10 years was 26.5 °C (30 Jul 2026), the lowest 1.9 °C (9 Jul 2025).
How often does it rain in Interlaken in July?: On average there were 17.8 rain days (at least 1 mm) with 143 mm of precipitation in total.

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Data sources

Weather data: Data obtained from the NASA Langley Research Center (LaRC) POWER Project funded through the NASA Earth Science/Applied Science Program
Reanalysis (weather model constrained by observations) on a coarse grid of about 50 km. Values represent a large area and can differ from local conditions, especially on islands, coasts and in mountains. No sunshine duration.
Reanalysis (weather model constrained by observations)
Reanalysis values represent a grid cell (approx. 25–50 km) and may differ from local measurements on coasts, islands and in mountains.
Sea temperature: MUR SST data were provided by JPL under support by NASA MEaSUREs program; accessed via NOAA CoastWatch ERDDAP
Daily multi-scale ultra-high resolution (≈ 1 km) analysis of satellite measurements (infrared, microwave) and in-situ data. Represents the foundation temperature below the daily warm surface layer. (Satellite and in-situ analysis)
Place search: Natural Earth (public domain) · GeoNames (CC BY 4.0) / OpenStreetMap (ODbL)