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
As August transitions into September, the average high-temperature rests at a warm 84.9°F (29.4°C), maintaining a close resemblance to the previous month. A stark contrast in day to night temperatures can be seen in Birds Landing in September, with an average low-temperature of 57.7°F (14.3°C).Heat index
For most parts of September, the heat index is calculated to be a tropical 87.8°F (31°C). Continuous activity in exposure could lead to a feeling of fatigue and heat cramps.Take note of the fact that heat index values are based on shaded circumstances with light airflows. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', gives an indication of how one might feel in terms of heat after considering humidity. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
Humidity
September is the least humid month, with an average relative humidity of 53%.Rainfall
January through May, September through December are months with rainfall in Birds Landing. September is the first month it rains. Throughout September, in the average 1 rainfall days, it receives 0.04" (1mm) of precipitation. In Birds Landing, California, during the entire year, the rain falls for 37.4 days and collects up to 2.44" (62mm) of precipitation.Daylight
In September, the average length of the day is 12h and 25min.On the first day of September in Birds Landing, sunrise is at 6:37 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 7:03 am and sunset at 6:51 pm PDT.
Sunshine
The average sunshine in September in Birds Landing is 11.2h.UV index
In Birds Landing, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the average person.Note: The maximum UV index of 5 during September translates into these guidelines:
Guard yourself - An obligation to protect skin and eyes from harm exists. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Frequently asked questions
How hot is September in Birds Landing?
What is the least humid month in Birds Landing?
What is the average humidity in September in Birds Landing?
When does it start raining in Birds Landing?
What is the average length of the day in September in Birds Landing?
When are sunrise and sunset in September in Birds Landing?
How long on average sun shines in September in Birds Landing?
What is the UV index intensity in September in Birds Landing?
Average temperature in September
Birds Landing, CA
- Average high temperature in September: 84.9°F
The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is December (55.2°F).
- Average low temperature in September: 57.7°F
The month with the highest average low temperature is September (57.7°F).
The coldest month (with the lowest average low temperature) is January (41.5°F).
Average pressure in September
Birds Landing, CA
- Average pressure in September: 29.92"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Birds Landing, CA
- Average wind speed in September: 6mph
The windiest month (with the highest average wind speed) is June (7.6mph).
The calmest months (with the lowest average wind speed) are January and November (4.5mph).
Average humidity in September
Birds Landing, CA
- Average humidity in September: 53%
The months with the highest relative humidity are January and March (73%).
The month with the lowest relative humidity is September (53%).
Average rainfall in September
Birds Landing, CA
- Average rainfall in September: 0.04"
The wettest month (with the highest rainfall) is February (0.59").
The driest months (with the least rainfall) are June, July and August (0").
Average rainfall days in September
Birds Landing, CA
- Average rainfall days in September: 1 days
The month with the highest number of rainy days is March (8.1 days).
The month with the least rainy days is August (0.5 days).
Average daylight in September /
Average sunshine in September
Birds Landing, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in September: 11h and 1min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in September
Birds Landing, CA
- Average sunshine days in September: 28.8 days
The months with the most sunshine days are July and August (30.3 days).
The month with the least sunshine days is March (21.8 days).
Average UV index in September
Birds Landing, CA
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in September
Birds Landing, CA
- Average cloud cover in September: 9
The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is July (Cloud cover 5).
Average visibility in September
Birds Landing, 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).
Birds Landing, California, USA
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