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 arrival of September coincides with an average high-temperature of a still warm 81°F (27.2°C), indicating a minimal shift from August's 81.7°F (27.6°C). The low-temperature average for Ladera Heights during September stands at an enjoyable 63.9°F (17.7°C).Heat index
The heat index for September is evaluated at 82.4°F (28°C). With extended exposure and activity, one might feel exhausted and experience heat cramps.When assessing, remember that heat index measurements are for light winds and shaded spots. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', ties air temperature with relative humidity to produce the perceived temperature sensation. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
Humidity
In Ladera Heights, the average relative humidity in September is 60%.Rainfall
In Ladera Heights, in September, it is raining for 2.6 days, with typically 0.2" (5mm) of accumulated precipitation. In Ladera Heights, during the entire year, the rain falls for 48.9 days and collects up to 8.11" (206mm) of precipitation.Daylight
The average length of the day in September 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, in Ladera Heights, 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 are June 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 radiation for the ordinary person.Note: The maximum UV index of 6 during September leads to these instructions:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Ladera Heights?
What is the average humidity in September in Ladera Heights?
How many days does it rain in September in Ladera Heights?
How many hours of daylight does Ladera Heights have in September?
When is the sunrise / sunset in September in Ladera Heights?
How long on average sun shines in September in Ladera Heights?
What is the month with the highest UV index in Ladera Heights?
What is the UV index reading in September in Ladera Heights?
Average temperature in September
Ladera Heights, CA
- Average high temperature in September: 81°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 (64°F).
- Average low temperature in September: 63.9°F
The month with the highest average low temperature is August (64.4°F).
The coldest month (with the lowest average low temperature) is February (50.2°F).
Average pressure in September
Ladera Heights, CA
- Average pressure in September: 29.9"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in September
Ladera Heights, CA
- Average wind speed in September: 4.8mph
The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in September
Ladera Heights, CA
- Average humidity in September: 60%
The month with the highest relative humidity is June (68%).
The month with the lowest relative humidity is November (52%).
Average rainfall in September
Ladera Heights, CA
- Average rainfall in September: 0.2"
The wettest month (with the highest rainfall) is February (1.65").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in September
Ladera Heights, CA
- Average rainfall days in September: 2.6 days
The month with the highest number of rainy days is March (6.9 days).
The months with the least rainy days are June and August (2 days).
Average daylight in September /
Average sunshine in September
Ladera Heights, 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 3min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 42min).
Average sunshine days in September
Ladera Heights, CA
- Average sunshine days in September: 25.2 days
The month with the most sunshine days is August (26.7 days).
The month with the least sunshine days is February (21.8 days).
Average UV index in September
Ladera Heights, 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
Ladera Heights, CA
- Average cloud cover in September: 11
The months with the most cloud cover are March and December (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 7).
Average visibility in September
Ladera Heights, 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).
Ladera Heights, California, USA
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