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
September brings an average high-temperature of a still warm 80.4°F (26.9°C), nearly identical to the preceding month. The low-temperature average for East Irvine during September stands at a refreshing 63.9°F (17.7°C).Humidity
The average relative humidity in September is 61%.Rainfall
In East Irvine, in September, during 4 rainfall days, 0.28" (7mm) of precipitation is typically accumulated. In East Irvine, during the entire year, the rain falls for 65.2 days and collects up to 9.17" (233mm) of precipitation.Daylight
The average length of the day in September in East Irvine is 12h and 22min.On the first day of September, sunrise is at 6:25 am and sunset at 7:16 pm. On the last day of the month, sunrise is at 6:45 am and sunset at 6:36 pm PDT.
Sunshine
The average sunshine in September in East Irvine is 10.6h.UV index
The months with the highest UV index in East Irvine, California, are June through September, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for average individuals.Note: A maximum daily UV index of 6 during September morphs into the following directions:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Frequently asked questions
What is the temperature in September in East Irvine?
What is the average humidity in September in East Irvine?
How many days does it rain in September in East Irvine?
What is the average length of the day in September in East Irvine?
When is the sunrise / sunset in September in East Irvine?
How many hours of sunshine does East Irvine have in September?
When is the highest UV index in East Irvine?
What is the UV index intensity in September in East Irvine?
Average temperature in September
East Irvine, CA
- Average high temperature in September: 80.4°F
The warmest month (with the highest average high temperature) is August (81.7°F).
The month with the lowest average high temperature is December (63.1°F).
- Average low temperature in September: 63.9°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 (49.6°F).
Average pressure in September
East Irvine, CA
- Average pressure in September: 29.89"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
East Irvine, CA
- Average wind speed in September: 4.5mph
The windiest month (with the highest average wind speed) is April (5.8mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).
Average humidity in September
East Irvine, 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 (55%).
Average rainfall in September
East Irvine, CA
- Average rainfall in September: 0.28"
The wettest month (with the highest rainfall) is December (1.85").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in September
East Irvine, CA
- Average rainfall days in September: 4 days
The month with the highest number of rainy days is March (8.4 days).
The month with the least rainy days is June (2.1 days).
Average daylight in September /
Average sunshine in September
East Irvine, 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: 10h and 0min).
- Average sunshine in September: 10h and 4min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).
Average sunshine days in September
East Irvine, CA
- Average sunshine days in September: 23.1 days
The month with the most sunshine days is August (24.9 days).
The month with the least sunshine days is February (19.6 days).
Average UV index in September
East Irvine, 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, November and December (UV index 4).
Average cloud cover in September
East Irvine, CA
- Average cloud cover in September: 10
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 6).
Average visibility in September
East Irvine, 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).
East Irvine, California, USA
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