September weather forecast
Buellton, CA

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Weather in September

September, the first month of the autumn in Buellton, is also a moderately hot month, with an average temperature ranging between min 61.2°F (16.2°C) and max 77.5°F (25.3°C).

Temperature

The shift from August to September is characterized by an average high-temperature of a still warm 77.5°F (25.3°C), not significantly different from the 78.8°F (26°C) of August. Throughout September, Buellton anticipates an average low-temperature of 61.2°F (16.2°C).

Humidity

In September, the average relative humidity in Buellton, California, is 59%.

Rainfall

In Buellton, in September, during 1.6 rainfall days, 0.08" (2mm) of precipitation is typically accumulated. In Buellton, during the entire year, the rain falls for 37.7 days and collects up to 5.98" (152mm) of precipitation.

Daylight

In September, the average length of the day in Buellton is 12h and 23min.
On the first day of the month, sunrise is at 6:34 am and sunset at 7:26 pm. On the last day of September, in Buellton, sunrise is at 6:55 am and sunset at 6:45 pm PDT.

Sunshine

In Buellton, the average sunshine in September is 11.3h.

UV index

The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: An average UV index of 5 in September transforms into this advice:
Prioritize safety - Suggestions to prevent sun damage are offered. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Opt for tightly woven and loose clothing to enhance protection from the Sun.
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Frequently asked questions

What is the average September temperature in Buellton?

The average high-temperature, in September, in Buellton, is 77.5°F (25.3°C), while the average low-temperature is 61.2°F (16.2°C).

What is the average humidity in September in Buellton?

In Buellton, California, the average relative humidity in September is 59%.

How much does it rain in Buellton in September?

In September, in Buellton, California, the rain falls for 1.6 days. Throughout September, 0.08" (2mm) of precipitation is accumulated.

What is the average length of the day in September in Buellton?

The average day length in September is 12h and 23min.

When is the sunrise / sunset in September in Buellton?

On the first day of September, sunrise is at 6:34 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 6:45 pm PDT.

How long on average sun shines in September in Buellton?

In Buellton, California, the average sunshine duration in September is 11.3h.

How high is the UV index in September in Buellton?

The average daily maximum UV index in September in Buellton is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Buellton, CA

Average temperature in September - Buellton, CA
  • Average high temperature in September: 77.5°F

The warmest month (with the highest average high temperature) is August (78.8°F).
The month with the lowest average high temperature is December (61.2°F).

  • Average low temperature in September: 61.2°F

The month with the highest average low temperature is September (61.2°F).
The coldest month (with the lowest average low temperature) is February (47.8°F).

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Average pressure in September
Buellton, CA

Average pressure in September - Buellton, CA
  • Average pressure in September: 29.91"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.91"Hg).

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Average wind speed in September
Buellton, CA

Average wind speed in September - Buellton, CA
  • Average wind speed in September: 7.2mph

The windiest month (with the highest average wind speed) is May (8.9mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).

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Average humidity in September
Buellton, CA

Average humidity in September - Buellton, CA
  • Average humidity in September: 59%

The month with the highest relative humidity is March (67%).
The months with the lowest relative humidity are October and November (58%).

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Average rainfall in September
Buellton, CA

Average rainfall in September - Buellton, CA
  • Average rainfall in September: 0.08"

The wettest month (with the highest rainfall) is January (1.38").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in September
Buellton, CA

Average rainfall days in September - Buellton, CA
  • Average rainfall days in September: 1.6 days

The month with the highest number of rainy days is March (6.2 days).
The month with the least rainy days is August (0.8 days).

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Average daylight in September /
Average sunshine in September
Buellton, CA

Average daylight in September / Average sunshine in September - Buellton, 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: 9h and 54min).

  • Average sunshine in September: 11h and 2min

The months with the most sunshine are June and July (Average sunshine: 12h and 0min).
The month with the least sunshine is February (Average sunshine: 6h and 36min).

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Average sunshine days in September
Buellton, CA

Average sunshine days in September - Buellton, CA
  • Average sunshine days in September: 27.9 days

The month with the most sunshine days is August (29 days).
The month with the least sunshine days is February (22.3 days).

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Average UV index in September
Buellton, CA

Average UV index in September - Buellton, CA
  • Average UV index in September: 5

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in September
Buellton, CA

Average cloud cover in September - Buellton, CA
  • Average cloud cover in September: 6

The month with the most cloud cover is March (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 5).

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Average visibility in September
Buellton, CA

Average visibility in September - Buellton, 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).

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Buellton, California, USA

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