August Weather in Santa Barbara, Mexico

Last updated: August 27, 2025

In Santa Barbara, Mexico, the average temperature in August is a pleasant 18°C (64°F). Expect a minimum of 10°C (50°F) and a maximum of 29°C (85°F). During this month, you'll experience about 133 mm (5.2 in) of precipitation over roughly 14 days, contributing to an average humidity of 68%.

August Temperature in Santa Barbara

In August in Santa Barbara, the average temperature is 18°C (64°F). Maximums can reach 29°C (85°F) and minimums can be as low as 10°C (50°F). This mild and pleasant climate makes it an ideal time for travelers to explore and enjoy outdoor activities.

August Weather in Santa Barbara: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Santa Barbara, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santa Barbara, August typically has an average temperature of 18°C (64°F), with highs reaching up to 29°C (85°F) and lows dropping to around 10°C (50°F).

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

August Precipitation in Santa Barbara

In Santa Barbara in August, the precipitation amount is 133 mm (5.2 in) occurring over the course of 14 days.

August Precipitation Trends in Santa Barbara

The chart displays monthly precipitation patterns in Santa Barbara, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Santa Barbara, August typically receives around 133 mm (5.2 inches) of precipitation spread over approximately 14 days.

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

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Millimeters (mm) Inches (in)

August Humidity in Santa Barbara

In Santa Barbara in August, humidity is 68%. With an average temperature of 18°C (64°F), this humidity feels like a warm embrace, making for a slightly muggy experience that can leave you feeling sticky as you explore, so it’s best to stay hydrated and take frequent breaks in the shade.

August Average Humidity in Santa Barbara

This chart illustrates the average monthly humidity levels in Santa Barbara, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Santa Barbara is approximately 68%, offering insight into how humid the weather typically is during this month.

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

August UV Index in Santa Barbara

In Santa Barbara in August, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Santa Barbara, you can check here.

Maximum UV Index Levels in Santa Barbara for August

The chart shows the monthly maximum UV Index (UVI) for Santa Barbara in August, 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 August, the maximum UV index in Santa Barbara typically reaches 14, which falls under the extreme exposure category.

Data source: Santa Barbara August 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 August Weather in Santa Barbara Compares to Other Months

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

This table compares monthly weather conditions in Santa Barbara, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	12°C (54°F)	10 mm (0.4 inches)	74%	very high
February Weather	14°C (58°F)	13 mm (0.5 inches)	65%	extreme
March Weather	17°C (62°F)	16 mm (0.6 inches)	58%	extreme
April Weather	18°C (65°F)	9 mm (0.4 inches)	58%	extreme
May Weather	20°C (68°F)	52 mm (2.0 inches)	67%	extreme
June Weather	19°C (66°F)	180 mm (7.1 inches)	76%	extreme
July Weather	17°C (64°F)	172 mm (6.8 inches)	67%	extreme
August Weather	18°C (64°F)	133 mm (5.2 inches)	68%	extreme
September Weather	17°C (63°F)	185 mm (7.3 inches)	81%	extreme
October Weather	16°C (61°F)	75 mm (3.0 inches)	83%	extreme
November Weather	14°C (57°F)	22 mm (0.9 inches)	84%	very high
December Weather	12°C (54°F)	8 mm (0.3 inches)	81%	very high