San Bruno weather in September (California, United States of America)
Curious about the September weather in San Bruno? Wondering if it's the right time to visit? Browse this page for a comprehensive overview of the weather conditions for that month.
In San Bruno the weather in September is generally perfect, characterized by high temperatures and almost no rainfall. Throughout the daytime, temperatures often hover around 23°C. However, as the sun sets and evening approaches, there's a noticeable cool-down, with temperatures gently dropping to a more temperate 13°C. On average, it has the peak temperatures of the year.
San Bruno in September usually receives almost no rainfall, averaging around 3.7 mm for the month. Delving into the climate records from the past 30 years, one can predict that nearly 1 day of the month will see rainfall.
The days are predominantly sunny, with an estimated total of around 270 hours of sunshine. This amount of sunlight does not only brightens the days but also contributes to a cheerful ambiance in the area during this month.
If you're inclined towards comfortable temperatures and drier conditions, September is a prime time to visit San Bruno. May, June, July, August, September and October typically offer the best circumstances. While December tends to showcase less optimal conditions.
For an in-depth look at the yearly conditions, visit our specialized San Bruno climate page with graphs.
San Bruno, monthly averages in September
Min Temperature
13°C
Max Temperature
23°C
Water Temperature
14°C *
Chance of Rain
3%
Precipitation
3.7 mm
Rainy days
1 day
Humidity
73% *
Windspeed
18 km/h *
Sunshine
270 hours *
Percentage Sunshine
73% *
Where to go in the United States of America in September
Find out more about the weather in the United States of America in September and which places have the best weather conditions in this month.
perfect weather
pleasant
tolerable
unpleasant
poor
So, what should you wear in San Bruno in September?
For visitors traveling to San Bruno, we recommend wearing layers. So maybe a skirt, t-shirt, shorts for during the day and jeans and a warm jacket for some days and evenings. With a water temperature of around 14°C there is no need to bring your swimwear.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 Bruno.
Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. 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.
