August Weather in San Diego, Mexico

Last updated: August 27, 2025

In August, the average temperature in San Diego, Mexico is a pleasant 24°C (76°F). However, expect a range with minimums dipping to 17°C (62°F) and maximums soaring to 35°C (96°F). During this month, precipitation averages around 71 mm (2.8 in) spread over 16 days, adding to an average humidity level of 68%. Prepare for a dynamic climate!

August Temperature in San Diego

In August in San Diego, the average temperature is 24°C (76°F). The maximum can reach 35°C (96°F), and the minimum can be as low as 17°C (62°F). This makes San Diego an ideal destination for travelers seeking warm weather and comfortable conditions.

August Weather in San Diego: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in San Diego, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Diego, August typically has an average temperature of 24°C (76°F), with highs reaching up to 35°C (96°F) and lows dropping to around 17°C (62°F).

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

August Precipitation in San Diego

In San Diego in August, the precipitation amount is 71 mm (2.8 in) over the course of 16 days.

August Precipitation Trends in San Diego

The chart displays monthly precipitation patterns in San Diego, 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 San Diego, August typically receives around 71 mm (2.8 inches) of precipitation spread over approximately 16 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 San Diego

In San Diego in August humidity is 68%. With an average temperature of 24°C (76°F), this humidity feels like a warm, steamy embrace that makes traveling both invigorating and slightly exhausting, as the air clings to your skin and encourages leisurely breaks in the shade.

August Average Humidity in San Diego

This chart illustrates the average monthly humidity levels in San Diego, 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 San Diego 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 San Diego

In San Diego in August, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in San Diego.

Maximum UV Index Levels in San Diego for August

The chart shows the monthly maximum UV Index (UVI) for San Diego 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 San Diego typically reaches 13, which falls under the extreme exposure category.

Data source: San Diego 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 San Diego Compares to Other Months

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

This table compares monthly weather conditions in San Diego, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	15°C (60°F)	16 mm (0.6 inches)	74%	very high
February Weather	18°C (64°F)	20 mm (0.8 inches)	65%	extreme
March Weather	20°C (69°F)	23 mm (0.9 inches)	58%	extreme
April Weather	23°C (74°F)	22 mm (0.8 inches)	58%	extreme
May Weather	25°C (77°F)	59 mm (2.3 inches)	67%	extreme
June Weather	25°C (76°F)	100 mm (4.0 inches)	76%	extreme
July Weather	24°C (76°F)	85 mm (3.3 inches)	67%	extreme
August Weather	24°C (76°F)	71 mm (2.8 inches)	68%	extreme
September Weather	23°C (74°F)	120 mm (4.7 inches)	81%	extreme
October Weather	21°C (70°F)	121 mm (4.8 inches)	83%	extreme
November Weather	18°C (65°F)	28 mm (1.1 inches)	84%	very high
December Weather	16°C (61°F)	12 mm (0.5 inches)	81%	high