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 warmest time of the year is September, with temperatures averaging a high of 75.7°F (24.3°C) and a low of 63.5°F (17.5°C).Humidity
In Capistrano Beach, the average relative humidity in September is 70%.Rainfall
In Capistrano Beach, in September, it is raining for 5.5 days, with typically 0.39" (10mm) of accumulated precipitation. In Capistrano Beach, during the entire year, the rain falls for 71.1 days and collects up to 9.69" (246mm) of precipitation.Daylight
In September, the average length of the day is 12h and 22min.On the first day of September, sunrise is at 6:25 am and sunset at 7:15 pm. On the last day of the month, sunrise is at 6:44 am and sunset at 6:35 pm PDT.
Sunshine
In September, the average sunshine is 10.2h.UV index
July through September, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: In September, the average maximum UV index of 6 translates into the following recommendations:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the warmest months?
What is the average September temperature?
What is the average humidity in September?
How much does it rain in September?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
When is the highest UV index?
How high is the UV index in September?
Average temperature in September
Capistrano Beach, CA
- Average high temperature in September: 75.7°F
The warmest month (with the highest average high temperature) is September (75.7°F).
The month with the lowest average high temperature is December (61.9°F).
- Average low temperature in September: 63.5°F
The month with the highest average low temperature is September (63.5°F).
The coldest month (with the lowest average low temperature) is February (51.1°F).
Average pressure in September
Capistrano Beach, CA
- Average pressure in September: 29.89"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are June and September (29.89"Hg).
Average wind speed in September
Capistrano Beach, CA
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is April (6.4mph).
The calmest month (with the lowest average wind speed) is October (5.1mph).
Average humidity in September
Capistrano Beach, CA
- Average humidity in September: 70%
The month with the highest relative humidity is June (76%).
The month with the lowest relative humidity is November (61%).
Average rainfall in September
Capistrano Beach, CA
- Average rainfall in September: 0.39"
The wettest month (with the highest rainfall) is December (1.93").
The driest month (with the least rainfall) is June (0.12").
Average rainfall days in September
Capistrano Beach, CA
- Average rainfall days in September: 5.5 days
The month with the highest number of rainy days is March (8.1 days).
The month with the least rainy days is June (3.6 days).
Average daylight in September /
Average sunshine in September
Capistrano Beach, 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 1min
The month with the most sunshine is August (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 6h and 24min).
Average sunshine days in September
Capistrano Beach, CA
- Average sunshine days in September: 20.8 days
The month with the most sunshine days is January (24.1 days).
The month with the least sunshine days is February (20.3 days).
Average UV index in September
Capistrano Beach, 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
Capistrano Beach, CA
- Average cloud cover in September: 15
The months with the most cloud cover are March and May (Cloud cover 27).
The month with the least cloud cover is August (Cloud cover 12).
Average visibility in September
Capistrano 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).
Capistrano Beach, California, USA
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