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
Santa Ana's weather in September, with an average high-temperature of a still moderately hot 81.7°F (27.6°C), subtly shifts from August's 83.1°F (28.4°C). September's nights in Santa Ana, California, observe an average temperature of 64.2°F (17.9°C).Heat index
For September, the heat index is evaluated at 84.2°F (29°C). Prolonged exposure combined with continuous activity could lead to exhaustion, and possibly heat cramps.When assessing, remember that heat index measurements are for light winds and shaded spots. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', gives an indication of how one might feel in terms of heat after considering humidity. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
Humidity
In September, the average relative humidity in Santa Ana, California, is 59%.Rainfall
In Santa Ana, in September, it is raining for 3.7 days, with typically 0.24" (6mm) of accumulated precipitation. In Santa Ana, California, during the entire year, the rain falls for 55 days and collects up to 7.4" (188mm) of precipitation.Daylight
In Santa Ana, the average length of the day in September is 12h and 22min.On the first day of September in Santa Ana, 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 Santa Ana, California, is 10.6h.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 health vulnerability from exposure to the Sun's UV rays for the average person.Note: In September, the maximum UV index of 6 suggests this advice:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Frequently asked questions
What is the usual temperature for Santa Ana in September?
What is the average humidity in September in Santa Ana?
How much does it rain in Santa Ana in September?
What is the average length of the day in September in Santa Ana?
When are sunrise and sunset in September in Santa Ana?
How many hours of sunshine does Santa Ana have in September?
What are the months with the highest UV index in Santa Ana?
What is the UV index intensity in September in Santa Ana?
Average temperature in September
Santa Ana, CA
- Average high temperature in September: 81.7°F
The warmest month (with the highest average high temperature) is August (83.1°F).
The month with the lowest average high temperature is December (63.7°F).
- Average low temperature in September: 64.2°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 (50.2°F).
Average pressure in September
Santa Ana, 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
Santa Ana, CA
- Average wind speed in September: 4.6mph
The windiest month (with the highest average wind speed) is April (5.9mph).
The calmest month (with the lowest average wind speed) is September (4.6mph).
Average humidity in September
Santa Ana, CA
- Average humidity in September: 59%
The month with the highest relative humidity is June (66%).
The month with the lowest relative humidity is November (52%).
Average rainfall in September
Santa Ana, CA
- Average rainfall in September: 0.24"
The wettest month (with the highest rainfall) is December (1.54").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in September
Santa Ana, CA
- Average rainfall days in September: 3.7 days
The month with the highest number of rainy days is March (7.1 days).
The month with the least rainy days is June (1.7 days).
Average daylight in September /
Average sunshine in September
Santa Ana, 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 42min).
Average sunshine days in September
Santa Ana, CA
- Average sunshine days in September: 22.8 days
The month with the most sunshine days is January (25 days).
The month with the least sunshine days is February (20.8 days).
Average UV index in September
Santa Ana, 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
Santa Ana, CA
- Average cloud cover in September: 9
The month with the most cloud cover is December (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in September
Santa Ana, 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).
Santa Ana, California, USA
Weather forecast for your location
2. Allow the app to use your location
