Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
San Carlos records an average high-temperature of a still pleasant 72.9°F (22.7°C) as September arrives, nearly mirroring the previous month's climate. Throughout the month of September, San Carlos witnesses an average temperature of 56.7°F (13.7°C).Humidity
In September, the average relative humidity in San Carlos is 69%.Rainfall
In September, the rain falls for 2.8 days. Throughout September, 0.16" (4mm) of precipitation is accumulated. Throughout the year, there are 77.5 rainfall days, and 11.22" (285mm) of precipitation is accumulated.Daylight
In San Carlos, the average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 6:40 am and sunset at 7:37 pm. On the last day of September, sunrise is at 7:04 am and sunset at 6:53 pm PDT.
Sunshine
In September, the average sunshine is 11h.UV index
June through September, with an average maximum UV index of 5, are months with the highest UV index in San Carlos. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum UV index of 5 in September translates into the following recommendations:
Adopt protective measures - Suggestions to resist sunburn are offered. To avoid the Sun's strongest rays, limit exposure around the mid-day period. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Frequently asked questions
What is the temperature in September in San Carlos?
What is the average humidity in September in San Carlos?
How many days does it rain in September in San Carlos?
How many hours of daylight does San Carlos have in September?
When is the sunrise / sunset in September in San Carlos?
How many hours of sunshine does San Carlos have in September?
What are the months with the highest UV index in San Carlos?
What is the UV index intensity in September in San Carlos?
Average temperature in September
San Carlos, CA
- Average high temperature in September: 72.9°F
The warmest month (with the highest average high temperature) is August (73°F).
The month with the lowest average high temperature is December (55.9°F).
- Average low temperature in September: 56.7°F
The month with the highest average low temperature is September (56.7°F).
The coldest month (with the lowest average low temperature) is January (46°F).
Average pressure in September
San Carlos, CA
- Average pressure in September: 29.92"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.92"Hg).
Average wind speed in September
San Carlos, CA
- Average wind speed in September: 5.6mph
The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is October (5.5mph).
Average humidity in September
San Carlos, CA
- Average humidity in September: 69%
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is October (68%).
Average rainfall in September
San Carlos, CA
- Average rainfall in September: 0.16"
The wettest month (with the highest rainfall) is February (2.09").
The driest months (with the least rainfall) are July and August (0.08").
Average rainfall days in September
San Carlos, CA
- Average rainfall days in September: 2.8 days
The month with the highest number of rainy days is March (13 days).
The month with the least rainy days is July (1.8 days).
Average daylight in September /
Average sunshine in September
San Carlos, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in September: 11h and 0min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in September
San Carlos, CA
- Average sunshine days in September: 23.9 days
The month with the most sunshine days is July (25.3 days).
The month with the least sunshine days is March (16.3 days).
Average UV index in September
San Carlos, CA
- Average UV index in September: 5
The months with the highest UV index are June, July, August and September (UV index 5).
The months with the lowest UV index are February, November and December (UV index 3).
Average cloud cover in September
San Carlos, CA
- Average cloud cover in September: 12
The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility in September
San Carlos, CA
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
San Carlos, California, USA
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