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
The onset of September marks an average high-temperature of a still warm 77°F (25°C), hardly differing from August's 78.4°F (25.8°C). September nights observe an average temperature dip to an enjoyable 62.8°F (17.1°C).Humidity
In September, the average relative humidity is 61%.Rainfall
In Westlake Village, in September, it is raining for 2.8 days, with typically 0.2" (5mm) of accumulated precipitation. In Westlake Village, during the entire year, the rain falls for 51.2 days and collects up to 9.41" (239mm) of precipitation.Daylight
The average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 6:29 am and sunset at 7:20 pm. On the last day of September, sunrise is at 6:49 am and sunset at 6:40 pm PDT.
Sunshine
The average sunshine in September is 10.9h.UV index
The months with the highest UV index in Westlake Village, California, are June through September, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the average person.Note: A maximum high daily UV index of 6 during September translates into the following directions:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
How many days does it rain in September?
How many hours of daylight does Westlake Village have in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Westlake Village have in September?
What is the month with the highest UV index?
How high is the UV index in September?
Average temperature in September
Westlake Village, CA
- Average high temperature in September: 77°F
The warmest month (with the highest average high temperature) is August (78.4°F).
The month with the lowest average high temperature is December (60.4°F).
- Average low temperature in September: 62.8°F
The month with the highest average low temperature is August (63.7°F).
The coldest month (with the lowest average low temperature) is February (49.1°F).
Average pressure in September
Westlake Village, CA
- Average pressure in September: 29.9"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are June and September (29.9"Hg).
Average wind speed in September
Westlake Village, CA
- Average wind speed in September: 4.7mph
The windiest months (with the highest average wind speed) are April and December (6.5mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).
Average humidity in September
Westlake Village, CA
- Average humidity in September: 61%
The month with the highest relative humidity is June (69%).
The month with the lowest relative humidity is November (53%).
Average rainfall in September
Westlake Village, CA
- Average rainfall in September: 0.2"
The wettest months (with the highest rainfall) are January and February (1.93").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in September
Westlake Village, CA
- Average rainfall days in September: 2.8 days
The month with the highest number of rainy days is March (7.3 days).
The month with the least rainy days is August (1.5 days).
Average daylight in September /
Average sunshine in September
Westlake Village, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 10h and 5min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 48min).
Average sunshine days in September
Westlake Village, CA
- Average sunshine days in September: 24 days
The month with the most sunshine days is August (26.2 days).
The month with the least sunshine days is February (21 days).
Average UV index in September
Westlake Village, CA
- Average UV index in September: 6
The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, March, April, November and December (UV index 4).
Average cloud cover in September
Westlake Village, CA
- Average cloud cover in September: 7
The months with the most cloud cover are March and December (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in September
Westlake Village, 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).
Westlake Village, California, USA
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