August Weather in San Diego, Guatemala

Last updated: August 23, 2025

In August, the average temperature in San Diego, Guatemala is a pleasant 23°C (74°F). However, temperatures can vary, with a minimum of 16°C (62°F) and a maximum reaching up to 33°C (91°F). Be prepared for some rain, as 108 mm (4.3 in) of precipitation is expected over 19 days, contributing to an average humidity of 63%.

August Temperature in San Diego

In August in San Diego, the average temperature is 23°C (74°F). Maximum temperatures can reach 33°C (91°F), while minimums can drop as low as 16°C (62°F). This pleasant weather makes it an ideal time for traveling and exploring the beautiful surroundings of San Diego.

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 23°C (74°F), with highs reaching up to 33°C (91°F) and lows dropping to around 16°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 108 mm (4.3 in) spread over 19 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 108 mm (4.3 inches) of precipitation spread over approximately 19 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 63%. With an average temperature of 23°C (74°F), this humidity feels like a warm embrace, making it quite comfortable for traveling, yet reminding you to stay hydrated as you explore.

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 63%, 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 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 San Diego, you can check here.

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 14, 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	20°C (68°F)	7 mm (0.3 inches)	80%	extreme
February Weather	21°C (70°F)	6 mm (0.2 inches)	72%	extreme
March Weather	22°C (72°F)	7 mm (0.3 inches)	61%	extreme
April Weather	24°C (76°F)	24 mm (0.9 inches)	53%	extreme
May Weather	24°C (76°F)	126 mm (4.9 inches)	51%	extreme
June Weather	23°C (74°F)	184 mm (7.2 inches)	52%	extreme
July Weather	23°C (74°F)	58 mm (2.3 inches)	58%	extreme
August Weather	23°C (74°F)	108 mm (4.3 inches)	63%	extreme
September Weather	23°C (74°F)	125 mm (4.9 inches)	71%	extreme
October Weather	22°C (73°F)	134 mm (5.3 inches)	79%	extreme
November Weather	21°C (70°F)	56 mm (2.2 inches)	79%	very high
December Weather	20°C (68°F)	13 mm (0.5 inches)	74%	very high