🇫🇷 Weather in Chamonix in August
This is what the weather in Chamonix (Haute-Savoie, France) was like in August in 2017–2026.
Key facts at a glance
Avg. daytime high
19.8 °C
16.6 °C – 22.8 °C
Avg. night-time low
9.3 °C
7.3 °C – 11.1 °C
Avg. rain days in period
13.0
42 % of days · ≥ 1.0 mm
Avg. precipitation in period
88.8 mm
58.1 mm – 122 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 28.6 °C (24 Aug 2023) · Lowest temperature 0.8 °C (26 Aug 2018) · Avg. daily peak wind 10 km/h
Weather mix of all days
- 57Sunny
- 96Partly cloudy
- 10Cloudy
- 74Light rain
- 56Rain
Summary
- On average 19.8 °C during the day and 9.3 °C at night.
- On average 13.0 rain days (Rain day = at least 1.0 mm of precipitation) with 88.8 mm of precipitation in total.
- Prevailing: Partly cloudy.
- Warmest year: 2026 (avg. 22.8 °C), coolest: 2021 (avg. 16.6 °C).
- Wettest year: 2020 (122 mm), driest: 2022 (58.1 mm).
- Extremes: 28.6 °C on 24 Aug 2023 and 0.8 °C on 26 Aug 2018.
Overall values from all 10 years. How is this calculated?
Charts
Temperatures per year
Average over your travel period
Precipitation & rain days
Year by year
2026
Avg. max22.8°Avg. min11.1°- Rain days
- 14 Rain days
- Precipitation
- 63.0 mm
- Avg. sunshine per day
- n/a
- Sea temperature
- –
Max 27.5 °C · Min 4.5 °C
2025
Avg. max20.0°Avg. min9.1°- Rain days
- 8 Rain days
- Precipitation
- 95.1 mm
- Avg. cloud cover
- 49 % cloudy
- Sea temperature
- –
Max 27.7 °C · Min 3.3 °C
2024
Avg. max20.9°Avg. min10.9°- Rain days
- 12 Rain days
- Precipitation
- 82.2 mm
- Avg. cloud cover
- 50 % cloudy
- Sea temperature
- –
Max 25.0 °C · Min 8.4 °C
2023
Avg. max19.8°Avg. min9.6°- Rain days
- 13 Rain days
- Precipitation
- 107 mm
- Avg. cloud cover
- 57 % cloudy
- Sea temperature
- –
Max 28.6 °C · Min 2.7 °C
2022
Avg. max21.7°Avg. min9.9°- Rain days
- 11 Rain days
- Precipitation
- 58.1 mm
- Avg. cloud cover
- 52 % cloudy
- Sea temperature
- –
Max 26.4 °C · Min 7.1 °C
2021
Avg. max16.6°Avg. min7.3°- Rain days
- 10 Rain days
- Precipitation
- 67.3 mm
- Avg. cloud cover
- 49 % cloudy
- Sea temperature
- –
Max 23.2 °C · Min 2.3 °C
2020
Avg. max18.7°Avg. min8.1°- Rain days
- 15 Rain days
- Precipitation
- 122 mm
- Avg. cloud cover
- 52 % cloudy
- Sea temperature
- –
Max 24.2 °C · Min 1.5 °C
2019
Avg. max19.4°Avg. min8.7°- Rain days
- 15 Rain days
- Precipitation
- 103 mm
- Avg. cloud cover
- 57 % cloudy
- Sea temperature
- –
Max 24.5 °C · Min 3.0 °C
2018
Avg. max19.1°Avg. min9.6°- Rain days
- 22 Rain days
- Precipitation
- 102 mm
- Avg. cloud cover
- 57 % cloudy
- Sea temperature
- –
Max 24.4 °C · Min 0.8 °C
2017
Avg. max19.2°Avg. min8.4°- Rain days
- 10 Rain days
- Precipitation
- 89.1 mm
- Avg. cloud cover
- 55 % cloudy
- Sea temperature
- –
Max 23.5 °C · Min 1.9 °C
Frequently asked questions
- How warm is it in Chamonix in August?
- Daytime highs averaged 19.8 °C, night-time lows 9.3 °C. The highest value of the past 10 years was 28.6 °C (24 Aug 2023), the lowest 0.8 °C (26 Aug 2018).
- How often does it rain in Chamonix in August?
- On average there were 13.0 rain days (at least 1 mm) with 88.8 mm of precipitation in total.
Check your exact travel dates
Choose your travel period – we show the weather for exactly those days.
Other destinations in August
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. Snow depth is the model value for the grid cell, not the depth on the slopes. 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)