July Weather in San Francisco, Mexico

Last updated: August 27, 2025

In July, the average temperature in San Francisco, Mexico hovers around a warm 28°C (83°F). The mercury can dip to a comfortable 22°C (72°F), but it can also reach a sizzling 35°C (96°F). With 87 mm (3.4 in) of rain spread over 16 days, expect a dash of moisture despite the warmth. Be prepared for the average humidity to be around 74%, adding a touch of tropical charm to your adventures!

July Temperature in San Francisco

In July in San Francisco, the average temperature is 28°C (83°F). Maximums can reach 35°C (96°F), while minimums can drop as low as 22°C (72°F). This pleasant climate makes it an ideal time for travelers to explore the outdoors and enjoy 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 28°C (83°F), with highs reaching up to 35°C (96°F) and lows dropping to around 22°C (72°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 precipitation amount is 87 mm (3.4 in) occurring over the course of 16 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 87 mm (3.4 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 Francisco

In San Francisco in July, humidity is 74%. With an average temperature of 28°C (83°F), this humidity feels like a heavy blanket enveloping you, making travel feel more tiring as every step is met with a warm, sticky embrace that can drain your energy quickly.

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 74%, 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 is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. 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 12, 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	23°C (73°F)	38 mm (1.5 inches)	81%	very high
February Weather	24°C (76°F)	19 mm (0.8 inches)	78%	very high
March Weather	25°C (77°F)	15 mm (0.6 inches)	71%	extreme
April Weather	27°C (81°F)	38 mm (1.5 inches)	70%	extreme
May Weather	28°C (82°F)	89 mm (3.5 inches)	68%	extreme
June Weather	28°C (82°F)	164 mm (6.5 inches)	69%	extreme
July Weather	28°C (83°F)	87 mm (3.4 inches)	74%	extreme
August Weather	28°C (83°F)	110 mm (4.3 inches)	81%	extreme
September Weather	27°C (82°F)	148 mm (5.8 inches)	82%	extreme
October Weather	26°C (80°F)	174 mm (6.9 inches)	83%	extreme
November Weather	24°C (76°F)	67 mm (2.6 inches)	84%	very high
December Weather	23°C (74°F)	35 mm (1.4 inches)	86%	high