San Bernardino weather in September (Grisons, Switzerland)
What kind of weather does September bring to San Bernardino? Want to know if this month is ideal for visiting? Our guide provides detailed weather information.
Temperatures
The month of September in San Bernardino typically includes moderate temperatures and high rainfall. Daytime temperatures are expected to be around 14°C, cooling off to about 4°C at night.
Precipitation
San Bernardino in September usually receives high rainfall, averaging around 146 mm for the month. Historically, approximately 15 days this month are expected to have rain.Average sunshine
The city usually sees around 156 hours of sunlight, indicating a moderately sunny period.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
Min Temperature
4°C
Max Temperature
14°C
Chance of Rain
50%
Precipitation
146 mm
Rainy days
15 days
Humidity
75% *
Sunshine
156 hours *
Percentage Sunshine
50% *
Where to go in Switzerland in September
Find out more about the weather in Switzerland and which places have the best travel conditions in this month.
perfect weather
pleasant
tolerable
unpleasant
poor
So, what should you wear in this month?
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.
Interested in more climate information?
This site 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 travel conditions. Find out where to go with our weather planner.
