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July Weather in San Francisco, Guatemala

Last updated: August 23, 2025

In San Francisco, Guatemala, the average temperature in July is a warm 28°C (83°F). Expect the minimum to dip to around 21°C (71°F) and peak at a scorching 39°C (103°F). Be prepared for some rain, as the region receives about 136 mm (5.4 in) of precipitation over 19 days. With an average humidity of 61%, you might feel the heat a little more during this month!

July Temperature in San Francisco

In July in San Francisco, the average temperature is 28°C (83°F), with maximums reaching 39°C (103°F) and minimums dipping to 21°C (71°F). This warm weather makes San Francisco an ideal destination for travelers seeking sunny adventures and outdoor activities.

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 39°C (103°F) and lows dropping to around 21°C (71°F).
JanFebMarAprMayJunJulAugSepOctNovDec747881868783838382807775
Data source: Temperature data for San Francisco generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

July Precipitation in San Francisco

In San Francisco in July, the precipitation amount is 136 mm (5.4 in) over the course of 19 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 136 mm (5.4 inches) of precipitation spread over approximately 19 days.
JanFebMarAprMayJunJulAugSepOctNovDec4323314010424713615821520011055
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
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July Humidity in San Francisco

In San Francisco in July humidity is 61%. With an average temperature of 28°C (83°F), this humidity feels like a warm embrace that can be quite stifling for travelers, making breathing a bit more laborious and the air seem thick, which might lead to a slower pace and a greater thirst for hydration.

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 61%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%73%59%53%54%55%61%71%77%78%82%86%
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.
JanFebMarAprMayJunJulAugSepOctNovDec9111314131313131312108
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.
 TemperaturePrecipitationHumidityUV
January Weather24°C (75°F)43 mm (1.7 inches)84%very high
February Weather25°C (78°F)23 mm (0.9 inches)73%extreme
March Weather27°C (81°F)31 mm (1.2 inches)59%extreme
April Weather30°C (87°F)40 mm (1.6 inches)52%extreme
May Weather31°C (87°F)104 mm (4.1 inches)53%extreme
June Weather28°C (83°F)247 mm (9.7 inches)55%extreme
July Weather28°C (83°F)136 mm (5.4 inches)61%extreme
August Weather28°C (83°F)158 mm (6.2 inches)71%extreme
September Weather28°C (82°F)215 mm (8.4 inches)77%extreme
October Weather27°C (80°F)200 mm (7.9 inches)78%extreme
November Weather25°C (77°F)110 mm (4.3 inches)82%very high
December Weather24°C (75°F)55 mm (2.2 inches)86%very high

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