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 sea temperature 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
In Avalon, California, September is the warmest month, with temperatures averaging a high of 67.8°F (19.9°C) and a low of 63.1°F (17.3°C).Humidity
In September, the average relative humidity is 82%.Rainfall
In Avalon, during September, the rain falls for 4.7 days and regularly aggregates up to 0.31" (8mm) of precipitation. In Avalon, during the entire year, the rain falls for 69.5 days and collects up to 7.76" (197mm) of precipitation.Ocean temperature
In September, the average ocean temperature is 66.9°F (19.4°C).Note: When the surface water temperature is 66.9°F (19.4°C), most do not enjoy swimming. Breathing control becomes more complex as temperatures drop below 69.8°F (21°C).
Daylight
In September, the average length of the day is 12h and 22min.On the first day of September, sunrise is at 6:28 am and sunset at 7:18 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 6:38 pm PDT.
Sunshine
In Avalon, the average sunshine in September is 9.4h.UV index
June through October, with an average maximum UV index of 5, are months with the highest UV index in Avalon. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: A maximum high daily UV index of 5 during September translates into the following directions:
Make use of precautions - It is urged to ward off sun damage. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. 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 time of the year is the hottest?
What is the average September temperature?
What is the average humidity in September?
How much does it rain in September?
What is the ocean temperature in September?
How many hours of daylight does Avalon have in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Avalon have in September?
When is the highest UV index?
What is the UV index reading in September?
Average temperature in September
Avalon, CA
- Average high temperature in September: 67.8°F
The warmest month (with the highest average high temperature) is September (67.8°F).
The month with the lowest average high temperature is February (59.4°F).
- Average low temperature in September: 63.1°F
The month with the highest average low temperature is September (63.1°F).
The coldest month (with the lowest average low temperature) is March (54.9°F).
Average pressure in September
Avalon, CA
- Average pressure in September: 29.9"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is September (29.9"Hg).
Average wind speed in September
Avalon, CA
- Average wind speed in September: 7mph
The windiest month (with the highest average wind speed) is April (9.1mph).
The calmest months (with the lowest average wind speed) are June and July (6.8mph).
Average humidity in September
Avalon, CA
- Average humidity in September: 82%
The months with the highest relative humidity are June and July (86%).
The month with the lowest relative humidity is December (68%).
Average rainfall in September
Avalon, CA
- Average rainfall in September: 0.31"
The wettest month (with the highest rainfall) is December (1.54").
The driest month (with the least rainfall) is June (0.12").
Average rainfall days in September
Avalon, CA
- Average rainfall days in September: 4.7 days
The month with the highest number of rainy days is March (7.2 days).
The month with the least rainy days is September (4.7 days).
Average sea temperature in September
Avalon, CA
- Average sea temperature in September: 66.9°F
The best month for swimming (with the highest average sea temperature) is August (67.7°F).
The coldest months (with the lowest average sea temperature) are January and February (58.7°F).
Average daylight in September /
Average sunshine in September
Avalon, 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: 9h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 6h and 24min).
Average sunshine days in September
Avalon, CA
- Average sunshine days in September: 21.9 days
The month with the most sunshine days is January (24.2 days).
The month with the least sunshine days is June (19.6 days).
Average UV index in September
Avalon, CA
- Average UV index in September: 5
The months with the highest UV index are June, July, August, September and October (UV index 5).
The months with the lowest UV index are January, February, March, April, May, November and December (UV index 4).
Average cloud cover in September
Avalon, CA
- Average cloud cover in September: 25
The month with the most cloud cover is June (Cloud cover 40).
The months with the least cloud cover are October and November (Cloud cover 21).
Average visibility in September
Avalon, 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).
Avalon, California, USA
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