September weather forecast
Santa Maria, CA

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The hilly region of Santa Maria in California, over the neat vineyard farm on a sunny day
The hilly region of Santa Maria in California, over the neat vineyard farm on a sunny day

Weather in September

The first month of the autumn, September, is also a moderately hot month in Santa Maria, California, with an average temperature fluctuating between 59.9°F (15.5°C) and 79.2°F (26.2°C).

Temperature

At the start of September, Santa Maria's average high-temperature reaches a still warm 79.2°F (26.2°C), subtly different from the preceding month. Santa Maria's temperature lowers to a mean of 59.9°F (15.5°C) during the nights in September.

Humidity

The average relative humidity in September is 59%.

Rainfall

In Santa Maria, in September, it is raining for 2 days, with typically 0.08" (2mm) of accumulated precipitation. Throughout the year, there are 43.9 rainfall days, and 6.93" (176mm) of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 23min.
On the first day of the month, sunrise is at 6:35 am and sunset at 7:27 pm. On the last day of September, sunrise is at 6:56 am and sunset at 6:46 pm PDT.

Sunshine

The average sunshine in September is 11.3h.

UV index

In Santa Maria, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index, 5 in September, converts into the following recommendations:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Updated: Aug 29, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average September temperature in Santa Maria?

Santa Maria in September has an average high-temperature of 79.2°F (26.2°C) and an average low-temperature of 59.9°F (15.5°C).

What is the average humidity in September?

In Santa Maria, the average relative humidity in September is 59%.

How much does it rain in September?

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

How many hours of daylight does Santa Maria have in September?

In Santa Maria, California, the average day length in September is 12h and 23min.

When are sunrise and sunset in September?

On the first day of September, sunrise is at 6:35 am and sunset at 7:27 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 6:46 pm PDT.

How many hours of sunshine does Santa Maria have in September?

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

What is the UV index reading in September in Santa Maria?

In Santa Maria, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Santa Maria, CA

Average temperature in September - Santa Maria, CA
  • Average high temperature in September: 79.2°F

The warmest month (with the highest average high temperature) is August (79.3°F).
The month with the lowest average high temperature is December (61.9°F).

  • Average low temperature in September: 59.9°F

The month with the highest average low temperature is September (59.9°F).
The coldest month (with the lowest average low temperature) is February (46.6°F).

Average pressure in September
Santa Maria, CA

Average pressure in September - Santa Maria, 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).

Average wind speed in September
Santa Maria, CA

Average wind speed in September - Santa Maria, CA
  • Average wind speed in September: 6.2mph

The windiest months (with the highest average wind speed) are April and May (7.6mph).
The calmest month (with the lowest average wind speed) is July (6.1mph).

Average humidity in September
Santa Maria, CA

Average humidity in September - Santa Maria, CA
  • Average humidity in September: 59%

The month with the highest relative humidity is March (68%).
The month with the lowest relative humidity is October (58%).

Average rainfall in September
Santa Maria, CA

Average rainfall in September - Santa Maria, CA
  • Average rainfall in September: 0.08"

The wettest month (with the highest rainfall) is March (1.5").
The driest months (with the least rainfall) are June and August (0.04").

Average rainfall days in September
Santa Maria, CA

Average rainfall days in September - Santa Maria, CA
  • Average rainfall days in September: 2 days

The month with the highest number of rainy days is March (7.9 days).
The months with the least rainy days are June and August (0.8 days).

Average daylight in September /
Average sunshine in September
Santa Maria, CA

Average daylight in September / Average sunshine in September - Santa Maria, CA
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 30min).
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, July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is February (Average sunshine: 6h and 30min).

Average sunshine days in September
Santa Maria, CA

Average sunshine days in September - Santa Maria, CA
  • Average sunshine days in September: 28 days

The month with the most sunshine days is August (29.3 days).
The month with the least sunshine days is February (21.3 days).

Average UV index in September
Santa Maria, CA

Average UV index in September - Santa Maria, 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, March, November and December (UV index 4).

Average cloud cover in September
Santa Maria, CA

Average cloud cover in September - Santa Maria, CA
  • Average cloud cover in September: 7

The month with the most cloud cover is March (Cloud cover 26).
The month with the least cloud cover is August (Cloud cover 6).

Average visibility in September
Santa Maria, CA

Average visibility in September - Santa Maria, 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).

Santa Maria, California, USA

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