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
Channel Islands Beach's warmest months, August and September, record an average high-temperature of 73.4°F (23°C).Humidity
In September, the average relative humidity is 65%.Rainfall
In Channel Islands Beach, during September, the rain falls for 3 days and regularly aggregates up to 0.16" (4mm) of precipitation. Throughout the year, there are 46.5 rainfall days, and 8.31" (211mm) of precipitation is accumulated.Ocean temperature
In Channel Islands Beach, the average seawater temperature in September is 63.3°F (17.4°C).Note: Swimming in 63.3°F (17.4°C) does not offer a pleasant experience for most individuals. The act of controlling one's breathing becomes progressively difficult as the water temperature goes under 69.8°F (21°C).
Daylight
The average length of the day in September in Channel Islands Beach is 12h and 22min.On the first day of the month, sunrise is at 6:30 am and sunset at 7:22 pm. On the last day of September, sunrise is at 6:51 am and sunset at 6:41 pm PDT.
Sunshine
In Channel Islands Beach, the average sunshine in September is 10.9h.UV index
In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, a regular UV index of 5 translates into these guidelines:
Adopt protective measures - It is advised to guard against sun damage. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Frequently asked questions
What part of the year is the hottest in Channel Islands Beach?
What is the usual temperature for Channel Islands Beach in September?
What is the average humidity in September in Channel Islands Beach?
How much does it rain in Channel Islands Beach in September?
How cold is the water in September in Channel Islands Beach?
What is the average length of the day in September in Channel Islands Beach?
When is the sunrise / sunset in September in Channel Islands Beach?
How long on average sun shines in September in Channel Islands Beach?
How high is the UV index in September in Channel Islands Beach?
Average temperature in September
Channel Islands Beach, CA
- Average high temperature in September: 73.4°F
The warmest months (with the highest average high temperature) are August and September (73.4°F).
The month with the lowest average high temperature is February (59°F).
- Average low temperature in September: 63°F
The month with the highest average low temperature is September (63°F).
The coldest months (with the lowest average low temperature) are February and December (50.5°F).
Average pressure in September
Channel Islands Beach, CA
- Average pressure in September: 29.9"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is September (29.9"Hg).
Average wind speed in September
Channel Islands Beach, CA
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in September
Channel Islands Beach, CA
- Average humidity in September: 65%
The month with the highest relative humidity is June (72%).
The month with the lowest relative humidity is November (57%).
Average rainfall in September
Channel Islands Beach, CA
- Average rainfall in September: 0.16"
The wettest month (with the highest rainfall) is January (1.85").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in September
Channel Islands Beach, CA
- Average rainfall days in September: 3 days
The month with the highest number of rainy days is March (7.3 days).
The month with the least rainy days is August (1.3 days).
Average sea temperature in September
Channel Islands Beach, CA
- Average sea temperature in September: 63.3°F
The best month for swimming (with the highest average sea temperature) is August (64.1°F).
The coldest month (with the lowest average sea temperature) is April (56.7°F).
Average daylight in September /
Average sunshine in September
Channel Islands Beach, 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 months with the most sunshine are June, July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are January and February (Average sunshine: 6h and 48min).
Average sunshine days in September
Channel Islands Beach, CA
- Average sunshine days in September: 24.1 days
The month with the most sunshine days is October (27.2 days).
The month with the least sunshine days is February (21.7 days).
Average UV index in September
Channel Islands Beach, CA
- Average UV index in September: 5
The month with the highest UV index is August (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
Channel Islands Beach, CA
- Average cloud cover in September: 7
The month with the most cloud cover is March (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in September
Channel Islands Beach, 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).
Channel Islands Beach, California, USA
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