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May Weather in San Martin, United States

Last updated: June 24, 2025

In May, the average temperature in San Martin, United States is a pleasant 15°C (60°F). Visitors can expect a range with minimum temperatures dropping to 4°C (40°F) and highs reaching up to 31°C (89°F). Expect a modest precipitation amount of 15 mm (0.6 in) spread over 2 days, paired with an average humidity level of 71%.

May Temperature in San Martin

In May in San Martin, the average temperature is 15°C (60°F), with maximums reaching as high as 31°C (89°F) and minimums dropping to as low as 4°C (40°F). This diverse weather makes it essential for travelers to pack layers to comfortably enjoy their visit.

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

The chart illustrates May temperature patterns in San Martin, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Martin, May typically has an average temperature of 15°C (60°F), with highs reaching up to 31°C (89°F) and lows dropping to around 4°C (40°F).
JanFebMarAprMayJunJulAugSepOctNovDec505153576065676867625550
Data source: Temperature data for San Martin 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 Martin

In San Martin in May, the precipitation amount is 15 mm (0.6 in) over the course of 2 days.

May Precipitation Trends in San Martin

The chart displays monthly precipitation patterns in San Martin, 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 Martin, May typically receives around 15 mm (0.6 inches) of precipitation spread over approximately 2 days.
JanFebMarAprMayJunJulAugSepOctNovDec103797326151112173079
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in San Martin

In San Martin in May humidity is 71%. With an average temperature of 15°C (60°F), this humidity feels like a warm blanket wrapped around you, making travel slightly uncomfortable as you feel sticky and sluggish.

May Average Humidity in San Martin

This chart illustrates the average monthly humidity levels in San Martin, 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 Martin is approximately 71%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%84%82%78%71%64%59%54%55%62%78%80%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in San Martin

In San Martin in May, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in San Martin.

Maximum UV Index Levels in San Martin for May

The chart shows the monthly maximum UV Index (UVI) for San Martin 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 Martin typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec4589111111109753
Data source: San Martin 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 Martin Compares to Other Months

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

This table compares monthly weather conditions in San Martin, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather10°C (50°F)103 mm (4.0 inches)82%moderate
February Weather11°C (52°F)79 mm (3.1 inches)84%moderate
March Weather12°C (53°F)73 mm (2.9 inches)82%very high
April Weather14°C (57°F)26 mm (1.0 inches)78%very high
May Weather15°C (60°F)15 mm (0.6 inches)71%extreme
June Weather18°C (65°F)1 mm (0.0 inches)64%extreme
July Weather19°C (67°F)1 mm (0.0 inches)58%extreme
August Weather20°C (68°F)1 mm (0.0 inches)54%very high
September Weather19°C (67°F)2 mm (0.1 inches)55%very high
October Weather17°C (62°F)17 mm (0.7 inches)62%high
November Weather13°C (55°F)30 mm (1.2 inches)78%moderate
December Weather10°C (50°F)79 mm (3.1 inches)80%moderate

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