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 snowfall 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 is Stinson Beach's warmest month, registering average high temperatures of 70.9°F (21.6°C) and lows of 56.3°F (13.5°C).Humidity
The average relative humidity in September in Stinson Beach is 73%.Rainfall
In September, in Stinson Beach, the rain falls for 3.4 days. Throughout September, 0.12" (3mm) of precipitation is accumulated. Throughout the year, in Stinson Beach, California, there are 80.3 rainfall days, and 15.98" (406mm) of precipitation is accumulated.Snowfall
In Stinson Beach, snow does not fall in January through November.Daylight
In September, the average length of the day is 12h and 25min.On the first day of September in Stinson Beach, sunrise is at 6:41 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 6:54 pm PDT.
Sunshine
In September, the average sunshine is 10.5h.UV index
The months with the highest UV index are June through September, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: In September, the maximum UV index of 5 suggests these recommendations:
Undertake protective steps - Recommendations to avoid sunburn are issued. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Frequently asked questions
What time of the year is the hottest in Stinson Beach?
What is the temperature in September in Stinson Beach?
What is the average humidity in September in Stinson Beach?
How many days does it rain in September in Stinson Beach?
When it does not snow in Stinson Beach?
How many hours of daylight does Stinson Beach have in September?
When are sunrise and sunset in September in Stinson Beach?
How long on average sun shines in September in Stinson Beach?
What is the month with the highest UV index in Stinson Beach?
How high is the UV index in September in Stinson Beach?
Average temperature in September
Stinson Beach, CA
- Average high temperature in September: 70.9°F
The warmest month (with the highest average high temperature) is September (70.9°F).
The month with the lowest average high temperature is December (55.2°F).
- Average low temperature in September: 56.3°F
The month with the highest average low temperature is September (56.3°F).
The coldest month (with the lowest average low temperature) is December (46°F).
Average pressure in September
Stinson Beach, CA
- Average pressure in September: 29.92"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).
Average wind speed in September
Stinson Beach, CA
- Average wind speed in September: 6.3mph
The windiest months (with the highest average wind speed) are April and May (8.3mph).
The calmest month (with the lowest average wind speed) is November (5.9mph).
Average humidity in September
Stinson Beach, CA
- Average humidity in September: 73%
The month with the highest relative humidity is August (78%).
The month with the lowest relative humidity is October (69%).
Average rainfall in September
Stinson Beach, CA
- Average rainfall in September: 0.12"
The wettest month (with the highest rainfall) is February (3.43").
The driest months (with the least rainfall) are July and August (0.08").
Average rainfall days in September
Stinson Beach, CA
- Average rainfall days in September: 3.4 days
The month with the highest number of rainy days is March (12.8 days).
The month with the least rainy days is July (2.3 days).
Average snowfall days in September
Stinson Beach, CA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Stinson Beach, 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: 10h and 3min
The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).
Average sunshine days in September
Stinson Beach, CA
- Average sunshine days in September: 24.1 days
The months with the most sunshine days are June and July (24.8 days).
The month with the least sunshine days is March (16.6 days).
Average UV index in September
Stinson Beach, CA
- Average UV index in September: 5
The months with the highest UV index are June, July, August and September (UV index 5).
The months with the lowest UV index are February, November and December (UV index 3).
Average cloud cover in September
Stinson Beach, CA
- Average cloud cover in September: 19
The month with the most cloud cover is March (Cloud cover 39).
The month with the least cloud cover is September (Cloud cover 19).
Average visibility in September
Stinson Beach, 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).
Stinson Beach, California, USA
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