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
Corona Del Mar experiences a subtle adjustment in high-temperatures to a still warm 75.7°F (24.3°C) with the onset of September, maintaining near parity with August's 76.1°F (24.5°C). Corona Del Mar reports an average nighttime low-temperature of 64°F (17.8°C) in September.Humidity
In Corona Del Mar, the average relative humidity in September is 69%.Rainfall
In September, the rain falls for 4.8 days. Throughout September, 0.35" (9mm) of precipitation is accumulated. In Corona Del Mar, during the entire year, the rain falls for 67.2 days and collects up to 8.54" (217mm) of precipitation.Daylight
In September, the average length of the day in Corona Del Mar is 12h and 22min.On the first day of the month, sunrise is at 6:26 am and sunset at 7:16 pm. On the last day of September, in Corona Del Mar, sunrise is at 6:45 am and sunset at 6:36 pm PDT.
Sunshine
In September, the average sunshine is 10.5h.UV index
The months with the highest UV index are July through September, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: An average maximum UV index of 6 in September leads to these recommendations:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
How much does it rain in September?
How many hours of daylight does Corona Del Mar have in September?
When is the sunrise / 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
Corona Del Mar, CA
- Average high temperature in September: 75.7°F
The warmest month (with the highest average high temperature) is August (76.1°F).
The month with the lowest average high temperature is December (62.4°F).
- Average low temperature in September: 64°F
The month with the highest average low temperature is August (64.8°F).
The coldest month (with the lowest average low temperature) is February (52.3°F).
Average pressure in September
Corona Del Mar, CA
- Average pressure in September: 29.89"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are June and September (29.89"Hg).
Average wind speed in September
Corona Del Mar, CA
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest months (with the lowest average wind speed) are August, September and October (5.3mph).
Average humidity in September
Corona Del Mar, CA
- Average humidity in September: 69%
The month with the highest relative humidity is June (75%).
The month with the lowest relative humidity is November (60%).
Average rainfall in September
Corona Del Mar, CA
- Average rainfall in September: 0.35"
The wettest month (with the highest rainfall) is December (1.69").
The driest month (with the least rainfall) is June (0.12").
Average rainfall days in September
Corona Del Mar, CA
- Average rainfall days in September: 4.8 days
The month with the highest number of rainy days is March (7.7 days).
The month with the least rainy days is August (3.8 days).
Average daylight in September /
Average sunshine in September
Corona Del Mar, 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 3min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).
Average sunshine days in September
Corona Del Mar, CA
- Average sunshine days in September: 21.6 days
The month with the most sunshine days is January (24.3 days).
The month with the least sunshine days is May (19.3 days).
Average UV index in September
Corona Del Mar, 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
Corona Del Mar, CA
- Average cloud cover in September: 12
The months with the most cloud cover are March and December (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 9).
Average visibility in September
Corona Del Mar, 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).
Corona Del Mar, California, USA
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