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
September notes an average high-temperature of a still moderately hot 75.2°F (24°C), subtly differing from August's 75.6°F (24.2°C). Throughout September nights, Sunset Cliffs registers an average low-temperature of 65.3°F (18.5°C).Humidity
The average relative humidity in September in Sunset Cliffs, California, is 70%.Rainfall
In September, in Sunset Cliffs, the rain falls for 3.7 days. Throughout September, 0.31" (8mm) of precipitation is accumulated. Throughout the year, there are 64.5 rainfall days, and 9.02" (229mm) of precipitation is accumulated.Daylight
The average length of the day in September in Sunset Cliffs, California, is 12h and 22min.On the first day of the month, sunrise is at 6:24 am and sunset at 7:13 pm. On the last day of September, in Sunset Cliffs, California, sunrise is at 6:42 am and sunset at 6:34 pm PDT.
Sunshine
In September, the average sunshine is 10.3h.UV index
The months with the highest UV index are July through September, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum UV index, 6 during September, leads to the following recommendations:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Sunset Cliffs?
What is the average humidity in September in Sunset Cliffs?
How many days does it rain in September in Sunset Cliffs?
How many hours of daylight does Sunset Cliffs have in September?
When are sunrise and sunset in September in Sunset Cliffs?
How many hours of sunshine does Sunset Cliffs have in September?
What are the months with the highest UV index in Sunset Cliffs?
What is the UV index intensity in September in Sunset Cliffs?
Average temperature in September
Sunset Cliffs, CA
- Average high temperature in September: 75.2°F
The warmest month (with the highest average high temperature) is August (75.6°F).
The months with the lowest average high temperature are February and December (63°F).
- Average low temperature in September: 65.3°F
The month with the highest average low temperature is August (65.5°F).
The coldest month (with the lowest average low temperature) is February (53.1°F).
Average pressure in September
Sunset Cliffs, CA
- Average pressure in September: 29.88"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are June and September (29.88"Hg).
Average wind speed in September
Sunset Cliffs, CA
- Average wind speed in September: 5.8mph
The windiest month (with the highest average wind speed) is April (6.7mph).
The calmest month (with the lowest average wind speed) is October (5.5mph).
Average humidity in September
Sunset Cliffs, CA
- Average humidity in September: 70%
The month with the highest relative humidity is June (76%).
The months with the lowest relative humidity are January and November (61%).
Average rainfall in September
Sunset Cliffs, CA
- Average rainfall in September: 0.31"
The wettest month (with the highest rainfall) is December (1.81").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in September
Sunset Cliffs, CA
- Average rainfall days in September: 3.7 days
The month with the highest number of rainy days is March (8.4 days).
The month with the least rainy days is June (2.8 days).
Average daylight in September /
Average sunshine in September
Sunset Cliffs, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 10h and 2min
The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in September
Sunset Cliffs, CA
- Average sunshine days in September: 23.9 days
The month with the most sunshine days is August (24.8 days).
The month with the least sunshine days is February (20.1 days).
Average UV index in September
Sunset Cliffs, CA
- Average UV index in September: 6
The months with the highest UV index are July, August and September (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).
Average cloud cover in September
Sunset Cliffs, CA
- Average cloud cover in September: 12
The months with the most cloud cover are March, May and December (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 9).
Average visibility in September
Sunset Cliffs, 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).
Sunset Cliffs, California, USA
Weather forecast for your location
2. Allow the app to use your location