United StatesThe weather in September in San Simeon
It's hot in September in San Simeon with an average temperature of 30°C. Temperatures this month range from a low of 28°C to a high of 34°C. At night, you can expect temperatures between 10°C and 17°C.
September is an awesome month to be in San Simeon for sunny weather. You’ll have high temperatures and not much chance of rain this month.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in September for San Simeon, California. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 46°C in 2020, San Simeon reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 19°C in 2022. The extreme nighttime temperatures ranged from a lowest recorded value of 4°C to a highest value of 24°C.
Rainfall amount
According to weather history, there is only 2 mm of precipitation in September. The wind speed is around 4 Bft, mostly coming from the West.
Daily weather in September for San Simeon
Click on any day in September to get detailed info about the usual weather on that day in San Simeon. Check out the historical temperatures and precipitation over the past 10 years on this day.
September weather comparison
| San Simeon | New York | |
|---|---|---|
| Average temperature | 30°C | 27°C |
| Max. temperature | 34°C | 31°C |
| Min. temperature | 10°C | -5°C |
| Total precipitation | 2 mm | 57 mm |
| Rainy days | 1 day | 9 days |
Start of September
The month of September starts in San Simeon with hot temps, averaging around 33°C during the day and nights around 16°C.
Mid September
By mid-September, daytime temps drop to around 30°C, with nights around 14°C. No precipitation expected during this period, so you can enjoy plenty of sunshine.
End of September
By the end of September, the average daytime temperature in San Simeon is around 30°C, while nighttime temps are about 13°C. No precipitation expected at the end of the month; it’ll be mostly sunny.
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UV index
The UV index is a maximum of 9 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Check out the climate of San Simeon for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in September in San Simeon, California. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in San Simeon
Temperature in September in San Simeon over the years
Precipitation charts
These charts show the average amount of precipitation in September in San Simeon, California. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in September in San Simeon
Total precipitation in September in San Simeon over the years
Daily UV index in September in San Simeon
This chart shows the average daily UV index in September in San Simeon, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in September in San Simeon
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Average weather in San Simeon by month
Click on a month below to see detailed weather info for San Simeon. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.