July Weather in San Francisco, El Salvador

Last updated: August 23, 2025

In July, the average temperature in San Francisco, El Salvador is a warm 27°C (81°F), with daytime highs reaching up to 37°C (99°F) and lows dipping to 20°C (68°F). Visitors can expect a modest precipitation of 97 mm (3.8 in) over about 15 days, contributing to a humidity level of around 77%.

July Temperature in San Francisco

In July in San Francisco, the average temperature is 27°C (81°F). Maximums can reach 37°C (99°F) and minimums can be as low as 20°C (68°F). It's an ideal time for travelers to enjoy warm weather, perfect for outdoor activities and exploring the local attractions.

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

The chart illustrates July temperature patterns in San Francisco, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Francisco, July typically has an average temperature of 27°C (81°F), with highs reaching up to 37°C (99°F) and lows dropping to around 20°C (68°F).

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

July Precipitation in San Francisco

In San Francisco in July, the total precipitation amount is 97 mm (3.8 in) spread over 15 days.

July Precipitation Trends in San Francisco

The chart displays monthly precipitation patterns in San Francisco, 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 Francisco, July typically receives around 97 mm (3.8 inches) of precipitation spread over approximately 15 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 Francisco

In San Francisco in July, humidity is 77%. With an average temperature of 27°C (81°F), this humidity feels like a warm blanket, making travel feel sticky and heavy, as sweat clings to the skin and the air becomes thick, causing you to long for refreshing breezes and cool shade.

July Average Humidity in San Francisco

This chart illustrates the average monthly humidity levels in San Francisco, 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 Francisco is approximately 77%, 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 Francisco

In San Francisco in July, 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 Francisco.

Maximum UV Index Levels in San Francisco for July

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

Data source: San Francisco 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 Francisco Compares to Other Months

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

This table compares monthly weather conditions in San Francisco, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	26°C (78°F)	2 mm (0.1 inches)	63%	extreme
February Weather	27°C (80°F)	2 mm (0.1 inches)	62%	extreme
March Weather	28°C (83°F)	6 mm (0.2 inches)	59%	extreme
April Weather	28°C (83°F)	55 mm (2.2 inches)	59%	extreme
May Weather	27°C (80°F)	332 mm (13.1 inches)	59%	extreme
June Weather	26°C (79°F)	267 mm (10.5 inches)	68%	extreme
July Weather	27°C (81°F)	97 mm (3.8 inches)	77%	extreme
August Weather	26°C (80°F)	234 mm (9.2 inches)	79%	extreme
September Weather	26°C (78°F)	295 mm (11.6 inches)	77%	extreme
October Weather	25°C (77°F)	335 mm (13.2 inches)	77%	extreme
November Weather	25°C (77°F)	64 mm (2.5 inches)	75%	very high
December Weather	25°C (77°F)	4 mm (0.2 inches)	66%	very high