September Weather in Carpinteria, United States

Last updated: June 24, 2025

In September, the average temperature in Carpinteria, United States is a pleasant 21°C (70°F). Temperatures can range from a cool 7°C (45°F) at minimum to a scorching 39°C (103°F) at maximum. Expect minimal rainfall, with only 2 mm (0.1 in) of precipitation over the month and an average humidity of 48%. Enjoy the comfortable climate!

September Temperature in Carpinteria

In September in Carpinteria, the average temperature is 21°C (70°F), with maximums reaching up to 39°C (103°F) and minimums dipping as low as 7°C (45°F). This makes it an ideal time for travelers seeking a warm climate, while still being prepared for cooler evenings.

September Weather in Carpinteria: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Carpinteria, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Carpinteria, September typically has an average temperature of 21°C (70°F), with highs reaching up to 39°C (103°F) and lows dropping to around 7°C (45°F).

Data source: Temperature data for Carpinteria generated using information from the Copernicus Climate Change Service.

September Precipitation in Carpinteria

In Carpinteria in September, the precipitation amount is 2 mm (0.1 in) during a span of 0 days.

September Precipitation Trends in Carpinteria

The chart displays monthly precipitation patterns in Carpinteria, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Carpinteria, September typically receives around 2 mm (0.1 inches) of precipitation spread over approximately 0 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

September Humidity in Carpinteria

In Carpinteria in September humidity is 48%. With an average temperature of 21°C (70°F), this humidity feels like a pleasant and mild embrace, making it comfortable for traveling and exploring the area.

September Average Humidity in Carpinteria

This chart illustrates the average monthly humidity levels in Carpinteria, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Carpinteria is approximately 48%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Carpinteria

In Carpinteria in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Carpinteria.

Maximum UV Index Levels in Carpinteria for September

The chart shows the monthly maximum UV Index (UVI) for Carpinteria in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Carpinteria typically reaches 10, which falls under the very high exposure category.

Data source: Carpinteria September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How September Weather in Carpinteria Compares to Other Months

Weather in Carpinteria varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Carpinteria, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Carpinteria, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	11°C (52°F)	87 mm (3.4 inches)	78%	moderate
February Weather	11°C (52°F)	75 mm (3.0 inches)	82%	high
March Weather	12°C (54°F)	81 mm (3.2 inches)	75%	very high
April Weather	15°C (60°F)	23 mm (0.9 inches)	68%	very high
May Weather	17°C (63°F)	16 mm (0.6 inches)	57%	extreme
June Weather	20°C (69°F)	3 mm (0.1 inches)	52%	extreme
July Weather	23°C (73°F)	1 mm (0.1 inches)	46%	extreme
August Weather	23°C (74°F)	2 mm (0.1 inches)	39%	extreme
September Weather	21°C (70°F)	2 mm (0.1 inches)	48%	very high
October Weather	18°C (65°F)	10 mm (0.4 inches)	59%	high
November Weather	15°C (58°F)	20 mm (0.8 inches)	72%	moderate
December Weather	11°C (52°F)	58 mm (2.3 inches)	76%	moderate