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
With its high average temperature of 72.5°F (22.5°C) and a low of 54.7°F (12.6°C), September is regarded as the warmest month.Humidity
September and October, with an average relative humidity of 71%, are the least humid months.Rainfall
In September, the rain falls for 2.7 days. Throughout September, 0.12" (3mm) of precipitation is accumulated. Throughout the year, there are 83.1 rainfall days, and 20" (508mm) of precipitation is accumulated.Daylight
The average length of the day in September is 12h and 25min.On the first day of September, sunrise is at 6:41 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 6:55 pm PDT.
Sunshine
The average sunshine in September is 10.8h.UV index
June through September, with an average maximum UV index of 5, are months with the highest UV index in Tomales, California. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: In September, the UV index of 5 transforms into the following advice:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the hottest in Tomales?
What is the usual temperature for Tomales in September?
What is the least humid month?
What is the average humidity in September?
How many days does it rain in September?
How many hours of daylight does Tomales have in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What are the months with the highest UV index?
How high is the UV index in September in Tomales?
Average temperature in September
Tomales, CA
- Average high temperature in September: 72.5°F
The warmest month (with the highest average high temperature) is September (72.5°F).
The month with the lowest average high temperature is December (55.4°F).
- Average low temperature in September: 54.7°F
The month with the highest average low temperature is August (54.9°F).
The coldest month (with the lowest average low temperature) is December (45.3°F).
Average pressure in September
Tomales, 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 August and September (29.92"Hg).
Average wind speed in September
Tomales, CA
- Average wind speed in September: 7.4mph
The windiest month (with the highest average wind speed) is May (9.9mph).
The calmest month (with the lowest average wind speed) is November (6.7mph).
Average humidity in September
Tomales, CA
- Average humidity in September: 71%
The month with the highest relative humidity is March (78%).
The months with the lowest relative humidity are September and October (71%).
Average rainfall in September
Tomales, CA
- Average rainfall in September: 0.12"
The wettest month (with the highest rainfall) is February (4.37").
The driest month (with the least rainfall) is August (0.04").
Average rainfall days in September
Tomales, CA
- Average rainfall days in September: 2.7 days
The month with the highest number of rainy days is March (14.4 days).
The month with the least rainy days is August (1.1 days).
Average daylight in September /
Average sunshine in September
Tomales, 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 5min
The months with the most sunshine are July and August (Average sunshine: 11h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in September
Tomales, CA
- Average sunshine days in September: 25.9 days
The month with the most sunshine days is August (27.3 days).
The month with the least sunshine days is March (14.8 days).
Average UV index in September
Tomales, 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 January, February, November and December (UV index 3).
Average cloud cover in September
Tomales, CA
- Average cloud cover in September: 12
The month with the most cloud cover is March (Cloud cover 39).
The month with the least cloud cover is September (Cloud cover 12).
Average visibility in September
Tomales, 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).
Tomales, California, USA
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