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May Weather in San Francisco, Philippines

Last updated: August 27, 2025

In May, the average temperature in San Francisco, Philippines is a warm 28°C (82°F), with minimums dipping to 25°C (78°F) and maximums rising to 31°C (88°F). Expect 122 mm (4.8 in) of precipitation spread over 23 days, contributing to an average humidity of 84%. Embrace the tropical vibe! 🌴

May Temperature in San Francisco

In May in San Francisco, the average temperature is 28°C (82°F), with maximums reaching 31°C (88°F) and minimums dropping to as low as 25°C (78°F). This comfortable weather makes it an ideal time for travelers to explore and enjoy outdoor activities in San Francisco.

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 28°C (82°F), with highs reaching up to 31°C (88°F) and lows dropping to around 25°C (78°F).
JanFebMarAprMayJunJulAugSepOctNovDec807980818282818281818181
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.

May Precipitation in San Francisco

In San Francisco in May, the total amount of precipitation is 122 mm (4.8 in), occurring over a span of 23 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 122 mm (4.8 inches) of precipitation spread over approximately 23 days.
JanFebMarAprMayJunJulAugSepOctNovDec194937367122279288224249288179276
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in San Francisco

In San Francisco in May humidity is 84%. With an average temperature of 28°C (82°F), this humidity feels like a warm, thick blanket wrapping around you, making outdoor activities feel sticky and exhausting for traveling.

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 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%80%77%78%85%87%88%89%90%87%90%91%
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 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 Francisco, you can check here.

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 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec121416161413131414131211
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.
 TemperaturePrecipitationHumidityUV
January Weather26°C (80°F)194 mm (7.6 inches)85%extreme
February Weather26°C (80°F)93 mm (3.6 inches)80%extreme
March Weather27°C (80°F)73 mm (2.9 inches)77%extreme
April Weather27°C (81°F)67 mm (2.6 inches)78%extreme
May Weather28°C (82°F)122 mm (4.8 inches)84%extreme
June Weather28°C (82°F)279 mm (11.0 inches)87%extreme
July Weather27°C (82°F)288 mm (11.3 inches)88%extreme
August Weather28°C (82°F)224 mm (8.8 inches)89%extreme
September Weather27°C (82°F)249 mm (9.8 inches)90%extreme
October Weather27°C (81°F)288 mm (11.3 inches)87%extreme
November Weather27°C (82°F)179 mm (7.0 inches)90%extreme
December Weather27°C (81°F)276 mm (10.9 inches)91%extreme

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