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May Weather in San Joaquin, United States

Last updated: June 24, 2025

In May, the average temperature in San Joaquin, United States hovers around 22°C (73°F). However, be prepared for a range, as temperatures can dip to a brisk 7°C (45°F) or soar to a sweltering 41°C (106°F). With an average humidity level of 71%, you may feel the warmth more intensely. Expect a modest precipitation of 17 mm (0.7 in) over 2 days, so a light raincoat might come in handy!

May Temperature in San Joaquin

In May in San Joaquin, the average temperature is 22°C (73°F). Maximum temperatures can reach 41°C (106°F), while the minimum can drop to as low as 7°C (45°F). This diverse range makes it essential to pack both lightweight clothing for the heat and warmer layers for the cooler evenings.

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

The chart illustrates May temperature patterns in San Joaquin, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Joaquin, May typically has an average temperature of 22°C (73°F), with highs reaching up to 41°C (106°F) and lows dropping to around 7°C (45°F).
JanFebMarAprMayJunJulAugSepOctNovDec515458667282888679685850
Data source: Temperature data for San Joaquin 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 Joaquin

In San Joaquin in May, the precipitation amount is 17 mm (0.7 in) over a span of 2 days.

May Precipitation Trends in San Joaquin

The chart displays monthly precipitation patterns in San Joaquin, 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 Joaquin, May typically receives around 17 mm (0.7 inches) of precipitation spread over approximately 2 days.
JanFebMarAprMayJunJulAugSepOctNovDec6047652517201192249
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in San Joaquin

In San Joaquin in May humidity is 71%. With an average temperature of 22°C (73°F), this humidity feels like a thick, warm blanket wrapping around you, making travel feel a bit sluggish but still pleasant as long as you stay hydrated and take breaks in the shade.

May Average Humidity in San Joaquin

This chart illustrates the average monthly humidity levels in San Joaquin, 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 Joaquin 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 Joaquin

In San Joaquin 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 Joaquin.

Maximum UV Index Levels in San Joaquin for May

The chart shows the monthly maximum UV Index (UVI) for San Joaquin 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 Joaquin typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec4589111211119753
Data source: San Joaquin 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 Joaquin Compares to Other Months

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

This table compares monthly weather conditions in San Joaquin, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather11°C (51°F)60 mm (2.4 inches)82%moderate
February Weather12°C (54°F)47 mm (1.9 inches)84%moderate
March Weather14°C (58°F)65 mm (2.5 inches)82%very high
April Weather19°C (66°F)25 mm (1.0 inches)78%very high
May Weather22°C (73°F)17 mm (0.7 inches)71%extreme
June Weather28°C (82°F)2 mm (0.1 inches)64%extreme
July Weather31°C (88°F)0 mm (0.0 inches)58%extreme
August Weather30°C (86°F)1 mm (0.0 inches)54%extreme
September Weather26°C (80°F)1 mm (0.0 inches)55%very high
October Weather20°C (68°F)9 mm (0.4 inches)62%high
November Weather14°C (58°F)22 mm (0.9 inches)78%moderate
December Weather10°C (51°F)49 mm (1.9 inches)80%moderate

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