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's commencement is accompanied by an average high-temperature of a still warm 81.7°F (27.6°C), diverging marginally from August's 83.3°F (28.5°C). September in Bonsall generally records an average low-temperature of 61.9°F (16.6°C).Heat index
For most parts of September, the heat index is evaluated at 84.2°F (29°C). Prolonged exposure and physical activity might induce exhaustion, potentially causing heat cramps.Heat index guidelines indicate values are for light wind scenarios and shaded regions. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', offers an insight into how hot it feels when we factor in moisture content. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
Humidity
The average relative humidity in September in Bonsall is 61%.Rainfall
In Bonsall, in September, during 4.4 rainfall days, 0.31" (8mm) of precipitation is typically accumulated. Throughout the year, in Bonsall, there are 63.6 rainfall days, and 8.98" (228mm) of precipitation is accumulated.Daylight
In September, the average length of the day is 12h and 22min.On the first day of September in Bonsall, sunrise is at 6:23 am and sunset at 7:13 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 6:34 pm PDT.
Sunshine
In September, the average sunshine in Bonsall is 10.5h.UV index
June through September, with an average maximum UV index of 6, are months with the highest UV index in Bonsall. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The daily high UV index of 6 in September translates into this advice:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Frequently asked questions
What is the average September temperature in Bonsall?
What is the average humidity in September in Bonsall?
How much does it rain in Bonsall in September?
How many hours of daylight does Bonsall have in September?
When is the sunrise / sunset in September in Bonsall?
How many hours of sunshine does Bonsall have in September?
When is the highest UV index in Bonsall?
How high is the UV index in September in Bonsall?
Average temperature in September
Bonsall, CA
- Average high temperature in September: 81.7°F
The warmest month (with the highest average high temperature) is August (83.3°F).
The month with the lowest average high temperature is December (63°F).
- Average low temperature in September: 61.9°F
The month with the highest average low temperature is August (63°F).
The coldest months (with the lowest average low temperature) are February and December (46.9°F).
Average pressure in September
Bonsall, CA
- Average pressure in September: 29.88"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in September
Bonsall, CA
- Average wind speed in September: 4.4mph
The windiest months (with the highest average wind speed) are April and May (5.5mph).
The calmest month (with the lowest average wind speed) is October (4.3mph).
Average humidity in September
Bonsall, CA
- Average humidity in September: 61%
The month with the highest relative humidity is May (69%).
The month with the lowest relative humidity is November (55%).
Average rainfall in September
Bonsall, CA
- Average rainfall in September: 0.31"
The wettest month (with the highest rainfall) is December (1.85").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in September
Bonsall, CA
- Average rainfall days in September: 4.4 days
The month with the highest number of rainy days is March (8.3 days).
The month with the least rainy days is June (1.2 days).
Average daylight in September /
Average sunshine in September
Bonsall, 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 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
Bonsall, CA
- Average sunshine days in September: 22.5 days
The month with the most sunshine days is June (25.8 days).
The month with the least sunshine days is February (20 days).
Average UV index in September
Bonsall, CA
- Average UV index in September: 6
The months with the highest UV index are June, July, August and September (UV index 6).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Bonsall, 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
Bonsall, 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).
Bonsall, California, USA
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