July Weather in San Diego, Guatemala

Last updated: August 23, 2025

In July, the average temperature in San Diego, Guatemala is a pleasant 23°C (74°F). Expect minimums of around 15°C (60°F) and delightful highs reaching up to 32°C (90°F). During this time, anticipate about 58 mm (2.3 in) of precipitation spread over 16 days, with an average humidity of 58%. Enjoy the mild climate and make the most of your time outdoors!

July Temperature in San Diego

In July in San Diego, the average temperature is 23°C (74°F). Maximum temperatures can reach 32°C (90°F), while the minimum can drop to as low as 15°C (60°F). This moderate climate makes San Diego an ideal destination for travelers seeking pleasant weather and outdoor activities.

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

The chart illustrates July 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, July typically has an average temperature of 23°C (74°F), with highs reaching up to 32°C (90°F) and lows dropping to around 15°C (60°F).

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

July Precipitation in San Diego

In San Diego in July, the precipitation amount is 58 mm (2.3 in) over the course of 16 days.

July Precipitation Trends in San Diego

The chart displays monthly precipitation patterns in San Diego, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In San Diego, July typically receives around 58 mm (2.3 inches) of precipitation spread over approximately 16 days.

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

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Millimeters (mm) Inches (in)

July Humidity in San Diego

In San Diego in July, humidity is 58%. With an average temperature of 23°C (74°F), this humidity feels like a warm, inviting embrace, making traveling enjoyable yet slightly sticky.

July Average Humidity in San Diego

This chart illustrates the average monthly humidity levels in San Diego, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in San Diego is approximately 58%, offering insight into how humid the weather typically is during this month.

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

July UV Index in San Diego

In San Diego in July, 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 July

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

Data source: San Diego July 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 July 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 July’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 July’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