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May Weather in Diablo Grande, United States

Last updated: June 24, 2025

In May, the average temperature in Diablo Grande, United States hovers around 20°C (68°F). Expect a range where the minimum dips to 5°C (42°F) and the maximum can soar up to 39°C (103°F). With an average humidity of 71%, this month also brings about 18 mm (0.7 in) of precipitation over approximately 2 days. Prepare for diverse weather conditions!

May Temperature in Diablo Grande

In May in Diablo Grande, the average temperature is 20°C (68°F). Maximum can reach 39°C (103°F), and minimum can be as low as 5°C (42°F). This range makes Diablo Grande an ideal destination for travelers seeking a mix of warm days and cooler nights.

May Weather in Diablo Grande: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Diablo Grande, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Diablo Grande, May typically has an average temperature of 20°C (68°F), with highs reaching up to 39°C (103°F) and lows dropping to around 5°C (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec505255616876818075665649
Data source: Temperature data for Diablo Grande 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 Diablo Grande

In Diablo Grande in May, the precipitation amount is 18 mm (0.7 in) over the course of 2 days.

May Precipitation Trends in Diablo Grande

The chart displays monthly precipitation patterns in Diablo Grande, 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 Diablo Grande, May typically receives around 18 mm (0.7 inches) of precipitation spread over approximately 2 days.
JanFebMarAprMayJunJulAugSepOctNovDec93728031182002162978
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Diablo Grande

In Diablo Grande in May, humidity is 71%. With an average temperature of 20°C (68°F), this humidity feels like a warm, moist embrace that can quickly lead to discomfort for travelers. The air clings to your skin, making even short walks feel more strenuous, while reaching for a refreshing drink becomes essential to stay hydrated.

May Average Humidity in Diablo Grande

This chart illustrates the average monthly humidity levels in Diablo Grande, 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 Diablo Grande 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 Diablo Grande

In Diablo Grande in May, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Diablo Grande.

Maximum UV Index Levels in Diablo Grande for May

The chart shows the monthly maximum UV Index (UVI) for Diablo Grande 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 Diablo Grande typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3589101111109743
Data source: Diablo Grande 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 Diablo Grande Compares to Other Months

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

This table compares monthly weather conditions in Diablo Grande, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather10°C (50°F)93 mm (3.7 inches)82%moderate
February Weather11°C (52°F)72 mm (2.8 inches)84%moderate
March Weather13°C (55°F)80 mm (3.1 inches)82%very high
April Weather16°C (61°F)31 mm (1.2 inches)78%very high
May Weather20°C (68°F)18 mm (0.7 inches)71%very high
June Weather25°C (76°F)2 mm (0.1 inches)64%extreme
July Weather27°C (81°F)0 mm (0.0 inches)58%extreme
August Weather26°C (80°F)0 mm (0.0 inches)54%very high
September Weather24°C (75°F)1 mm (0.1 inches)55%very high
October Weather19°C (66°F)16 mm (0.6 inches)62%high
November Weather13°C (56°F)29 mm (1.1 inches)78%moderate
December Weather10°C (50°F)78 mm (3.1 inches)80%moderate

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