🇨🇦 Weather in Whistler in September
This is what the weather in Whistler (British Columbia, Canada) was like in September in 2017–2026.
Key facts at a glance
Avg. daytime high
14.2 °C
11.7 °C – 16.7 °C
Avg. night-time low
5.4 °C
3.8 °C – 7.9 °C
Avg. rain days in period
13.6
45 % of days · ≥ 1.0 mm
Avg. precipitation in period
129 mm
38.2 mm – 217 mm
Avg. cloud cover
62 %
This data source has no sunshine hours – average cloud cover shown instead.
Avg. sea temperature
–
No sea nearby – no sea temperature.
Extremes: Highest temperature 28.3 °C (4 Sep 2025) · Lowest temperature -4.5 °C (29 Sep 2019) · Avg. daily peak wind 8 km/h
Weather mix of all days
- 56Sunny
- 68Partly cloudy
- 26Cloudy
- 60Light rain
- 76Rain
Summary
- On average 14.2 °C during the day and 5.4 °C at night.
- On average 13.6 rain days (Rain day = at least 1.0 mm of precipitation) with 129 mm of precipitation in total.
- Prevailing: Rain.
- Warmest year: 2022 (avg. 16.7 °C), coolest: 2018 (avg. 11.7 °C).
- Wettest year: 2021 (217 mm), driest: 2022 (38.2 mm).
- Extremes: 28.3 °C on 4 Sep 2025 and -4.5 °C on 29 Sep 2019.
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. max13.3°Avg. min4.8°- Rain days
- 16 Rain days
- Precipitation
- 96.6 mm
- Avg. cloud cover
- –
- Sea temperature
- –
Max 19.3 °C · Min -1.8 °C
2025
Avg. max16.6°Avg. min7.9°- Rain days
- 16 Rain days
- Precipitation
- 133 mm
- Avg. cloud cover
- 54 % cloudy
- Sea temperature
- –
Max 28.3 °C · Min 2.8 °C
2024
Avg. max14.6°Avg. min5.5°- Rain days
- 11 Rain days
- Precipitation
- 91.8 mm
- Avg. cloud cover
- 57 % cloudy
- Sea temperature
- –
Max 27.1 °C · Min -4.0 °C
2023
Avg. max13.6°Avg. min4.5°- Rain days
- 14 Rain days
- Precipitation
- 101 mm
- Avg. cloud cover
- 58 % cloudy
- Sea temperature
- –
Max 21.4 °C · Min -2.0 °C
2022
Avg. max16.7°Avg. min5.7°- Rain days
- 7 Rain days
- Precipitation
- 38.2 mm
- Avg. cloud cover
- 42 % cloudy
- Sea temperature
- –
Max 25.7 °C · Min -0.9 °C
2021
Avg. max12.1°Avg. min4.8°- Rain days
- 16 Rain days
- Precipitation
- 217 mm
- Avg. cloud cover
- 77 % cloudy
- Sea temperature
- –
Max 21.6 °C · Min -1.6 °C
2020
Avg. max16.2°Avg. min6.8°- Rain days
- 10 Rain days
- Precipitation
- 143 mm
- Avg. cloud cover
- 53 % cloudy
- Sea temperature
- –
Max 24.4 °C · Min 1.5 °C
2019
Avg. max12.2°Avg. min4.9°- Rain days
- 20 Rain days
- Precipitation
- 200 mm
- Avg. cloud cover
- 75 % cloudy
- Sea temperature
- –
Max 21.1 °C · Min -4.5 °C
2018
Avg. max11.7°Avg. min3.8°- Rain days
- 17 Rain days
- Precipitation
- 208 mm
- Avg. cloud cover
- 76 % cloudy
- Sea temperature
- –
Max 19.9 °C · Min 0.1 °C
2017
Avg. max14.9°Avg. min5.6°- Rain days
- 9 Rain days
- Precipitation
- 58.4 mm
- Avg. cloud cover
- 64 % cloudy
- Sea temperature
- –
Max 27.5 °C · Min -0.3 °C
Frequently asked questions
- How warm is it in Whistler in September?
- Daytime highs averaged 14.2 °C, night-time lows 5.4 °C. The highest value of the past 10 years was 28.3 °C (4 Sep 2025), the lowest -4.5 °C (29 Sep 2019).
- How often does it rain in Whistler in September?
- On average there were 13.6 rain days (at least 1 mm) with 129 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 September
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)