September weather forecastGardena, CA
September
Weather in September
The first month of the autumn, September, is still a warm month in Gardena, California, with an average temperature varying between 64.6°F (18.1°C) and 78.8°F (26°C).Temperature
The transition into September is marked with an average high-temperature of a still warm 78.8°F (26°C), showing an insignificant shift from August's 79.5°F (26.4°C). Gardena's nighttime temperature in September drops to an average of 64.6°F (18.1°C).Humidity
In September, the average relative humidity is 63%.Rainfall
In Gardena, in September, it is raining for 3.3 days, with typically 0.24" (6mm) of accumulated precipitation. Throughout the year, there are 51.7 rainfall days, and 7.83" (199mm) of precipitation is accumulated.Daylight
The average length of the day in September in Gardena is 12h and 22min.On the first day of the month, sunrise is at 6:27 am and sunset at 7:18 pm. On the last day of September, sunrise is at 6:47 am and sunset at 6:38 pm PDT.
Sunshine
The average sunshine in September is 10.5h.UV index
The months with the highest UV index in Gardena are June through September, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: An average maximum UV index of 6 in September leads to these recommendations:
Guard against overexposure. Protection from sun-induced harm is essential. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Gardena, CA
- Average high temperature in September: 78.8°F
The warmest month (with the highest average high temperature) is August (79.5°F).
The month with the lowest average high temperature is December (63.7°F).
- Average low temperature in September: 64.6°F
The month with the highest average low temperature is August (64.9°F).
The coldest month (with the lowest average low temperature) is February (51.8°F).
Average pressure in September
Gardena, CA
- Average pressure in September: 29.9"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.9"Hg).
Average wind speed in September
Gardena, CA
- Average wind speed in September: 5mph
The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest months (with the lowest average wind speed) are August, September and October (5mph).
Average humidity in September
Gardena, CA
- Average humidity in September: 63%
The month with the highest relative humidity is June (71%).
The month with the lowest relative humidity is November (55%).
Average rainfall in September
Gardena, CA
- Average rainfall in September: 0.24"
The wettest month (with the highest rainfall) is January (1.5").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in September
Gardena, CA
- Average rainfall days in September: 3.3 days
The month with the highest number of rainy days is March (7.2 days).
The month with the least rainy days is June (2.1 days).
Average daylight in September /
Average sunshine in September
Gardena, CA
- Average daylight in September: 12h and 24min
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 30min
The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in September
Gardena, CA
- Average sunshine days in September: 22.7 days
The month with the most sunshine days is October (25 days).
The month with the least sunshine days is June (19.8 days).
Average UV index in September
Gardena, 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, November and December (UV index 4).
Average cloud cover in September
Gardena, CA
- Average cloud cover in September: 11
The month with the most cloud cover is March (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 7).
Average visibility in September
Gardena, 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).
