The temperatures in Gryon in September are quite cold with temperatures between 5°C and 16°C, warm clothes are a must.
You can expect rain for roughly half of the month of September in Gryon. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Please note that Gryon can expect a few days of snow in September.
Our weather forecast can give you a great sense of what weather to expect in Gryon in September 2026.
If you’re planning to visit Gryon in the near future, we highly recommend that you review the 14 day weather forecast for Gryon before you arrive.
Temperatures
16° / 5°
Rainy Days
9
Snowy Days
1
Dry Days
20
Rainfall
151
mm
Sun Hours
10.8
Hrs
