San Ysidro weather in September (California, United States of America)
How is the weather in San Ysidro in September? Wondering if it's an optimal time for a visit? This page provides detailed information on the weather conditions for that month.
In San Ysidro the weather in September is generally perfect, with high temperatures and almost no rainfall. Daytime temperatures hover around 27°C, while nights can cool down to about 17°C. Often, it stands out as the year's warmest month. With this in mind, cool breathable fabrics will make navigating the heat much more bearable. Always be ready to embrace the warmth while staying cool and protected.
San Ysidro in September usually receives almost no rainfall, averaging around 4.1 mm for the month. Based on our climate data of the past 30 years, about 1 day of rain are anticipated.
The days are predominantly sunny, with an estimated total of around 272 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 a fan of comfortable temperatures and drier conditions, September is a great time to visit. January, February, March, April, May, June, July, August, September, October and November generally stand out with the best circumstances. While December tends to showcase less optimal conditions.
For an in-depth look at the yearly conditions, visit our specialized San Ysidro climate page with graphs.
San Ysidro, monthly averages in September
Min Temperature
17°C
Max Temperature
27°C
Chance of Rain
3%
Precipitation
4.1 mm
Rainy days
1 day
Humidity
79% *
Sunshine
272 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 Ysidro in September?
It's going to be warm! Consider airy clothing, t-shirts, and other summer clothes. Shorts for men made of cotton or linen are good options for staying cool.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 Ysidro.
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.
