San Bernardino weather in September (Grisons, Switzerland)
What can you expect from the weather in San Bernardino during September? Check out this comprehensive weather guide.
In September, San Bernardino typically experiences moderate temperatures and high rainfall. Daytime temperatures hover around 14°C, while nights can cool down to about 4°C.
San Bernardino in September usually receives high rainfall, averaging around 146 mm for the month. Typically around 15 days of rainfall is expected.
The area experiences a moderate amount of sunshine, with approximately 156 hours of sunlight expected. This makes it neither too gloomy nor overly bright.
In case you lean more towards enjoying temperate temperatures and rain-free days July and August typically offer the most optimal weather. In contrast, January, February, March, April, May, October, November and December tend to have less optimal conditions.
For an in-depth look at the yearly conditions, visit our specialized San Bernardino climate page with graphs.
San Bernardino, monthly averages in September
Where to go in Switzerland in September
Find out more about the weather in Switzerland in September and which places have the best weather conditions in this month.
So, what should you wear in San Bernardino in September?
Plan on layering your clothes. Some days or part of the day it will be nice and warm and some moments it can be a bit chilly. Bring a rain jacket in case it rains during your stay.What To Do
We rated the following activities from 1 (least suitable) to 10 (best) to do in September.
Interested in more climate information?
Weather and Climate provides you with all the information you need about the climate in San Bernardino.
Our site offers climate and forecast data for every country in the world. Are you going to Switzerland? On this website you can find historical weather averages for many cities in Switzerland. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.