May Weather in San Francisco, Philippines

Last updated: August 27, 2025

In San Francisco, Philippines during May, the average temperature hovers around 29°C (84°F). Expect a minimum of 25°C (77°F) and a maximum reaching up to 35°C (95°F). With precipitation averaging 151 mm (6.0 in) over 26 days and an average humidity of 76%, prepare for a warm and humid experience!

May Temperature in San Francisco

In May in San Francisco, the average temperature is 29°C (84°F), with maximums reaching 35°C (95°F) and minimums dropping to as low as 25°C (77°F). It's a great time to visit for those who enjoy warm weather and outdoor activities!

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

The chart illustrates May 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, May typically has an average temperature of 29°C (84°F), with highs reaching up to 35°C (95°F) and lows dropping to around 25°C (77°F).

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

May Precipitation in San Francisco

In San Francisco in May, the precipitation amount is 151 mm (6.0 in) during a span of 26 days.

May Precipitation Trends in San Francisco

The chart displays monthly precipitation patterns in San Francisco, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In San Francisco, May typically receives around 151 mm (6.0 inches) of precipitation spread over approximately 26 days.

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

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Millimeters (mm) Inches (in)

May Humidity in San Francisco

In San Francisco in May, humidity is 76%. With an average temperature of 29°C (84°F), this humidity feels like a warm embrace that clings to your skin, making outdoor activities a challenge and encouraging travelers to seek shade or cool refreshments frequently.

May Average Humidity in San Francisco

This chart illustrates the average monthly humidity levels in San Francisco, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in San Francisco is approximately 76%, offering insight into how humid the weather typically is during this month.

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

May UV Index in San Francisco

In San Francisco in May, 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 May

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

Data source: San Francisco May 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 May 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 May’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 May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	26°C (79°F)	105 mm (4.1 inches)	78%	extreme
February Weather	26°C (79°F)	74 mm (2.9 inches)	75%	extreme
March Weather	27°C (81°F)	51 mm (2.0 inches)	74%	extreme
April Weather	28°C (83°F)	47 mm (1.8 inches)	76%	extreme
May Weather	29°C (84°F)	151 mm (6.0 inches)	76%	extreme
June Weather	29°C (84°F)	219 mm (8.6 inches)	81%	extreme
July Weather	28°C (83°F)	313 mm (12.3 inches)	84%	extreme
August Weather	28°C (83°F)	242 mm (9.5 inches)	85%	extreme
September Weather	28°C (83°F)	315 mm (12.4 inches)	85%	extreme
October Weather	28°C (82°F)	252 mm (9.9 inches)	82%	extreme
November Weather	27°C (82°F)	197 mm (7.8 inches)	85%	extreme
December Weather	27°C (80°F)	215 mm (8.4 inches)	86%	extreme