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May Weather in Rancho Santa Margarita, United States

Last updated: June 24, 2025

In May, the average temperature in Rancho Santa Margarita, United States hovers around 18°C (65°F). Expect a minimum drop to 8°C (47°F) and a maximum rise to 33°C (93°F). During this month, precipitation averages 21 mm (0.8 in) over about 4 days, while the average humidity sits at a comfortable 70%.

May Temperature in Rancho Santa Margarita

In May in Rancho Santa Margarita, the average temperature is 18°C (65°F). Maximum temperatures can reach 33°C (93°F), while minimums can drop to as low as 8°C (47°F). Be sure to pack layers to enjoy the diverse climate during your travels!

May Weather in Rancho Santa Margarita: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Rancho Santa Margarita, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rancho Santa Margarita, May typically has an average temperature of 18°C (65°F), with highs reaching up to 33°C (93°F) and lows dropping to around 8°C (47°F).
JanFebMarAprMayJunJulAugSepOctNovDec555557636571777775696255
Data source: Temperature data for Rancho Santa Margarita 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 Rancho Santa Margarita

In Rancho Santa Margarita in May, the precipitation amount is 21 mm (0.8 in) over a span of 4 days.

May Precipitation Trends in Rancho Santa Margarita

The chart displays monthly precipitation patterns in Rancho Santa Margarita, 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 Rancho Santa Margarita, May typically receives around 21 mm (0.8 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec84789436212224133485
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Rancho Santa Margarita

In Rancho Santa Margarita in May humidity is 70%. With an average temperature of 18°C (65°F), this humidity feels like a warm embrace, making it quite comfortable for traveling, though it can leave you feeling slightly sticky if you're on the move for too long.

May Average Humidity in Rancho Santa Margarita

This chart illustrates the average monthly humidity levels in Rancho Santa Margarita, 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 Rancho Santa Margarita is approximately 70%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec74%79%75%71%70%72%73%69%68%67%68%71%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Rancho Santa Margarita

In Rancho Santa Margarita 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 Rancho Santa Margarita.

Maximum UV Index Levels in Rancho Santa Margarita for May

The chart shows the monthly maximum UV Index (UVI) for Rancho Santa Margarita 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 Rancho Santa Margarita typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111111010754
Data source: Rancho Santa Margarita 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 Rancho Santa Margarita Compares to Other Months

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

This table compares monthly weather conditions in Rancho Santa Margarita, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather13°C (55°F)84 mm (3.3 inches)74%moderate
February Weather13°C (55°F)78 mm (3.1 inches)79%high
March Weather14°C (58°F)94 mm (3.7 inches)75%very high
April Weather17°C (63°F)36 mm (1.4 inches)70%very high
May Weather18°C (65°F)21 mm (0.8 inches)70%extreme
June Weather21°C (71°F)2 mm (0.1 inches)72%extreme
July Weather25°C (77°F)2 mm (0.1 inches)73%extreme
August Weather25°C (78°F)2 mm (0.1 inches)69%very high
September Weather24°C (75°F)4 mm (0.2 inches)68%very high
October Weather20°C (69°F)13 mm (0.5 inches)67%high
November Weather17°C (62°F)34 mm (1.3 inches)68%moderate
December Weather13°C (55°F)85 mm (3.3 inches)71%moderate

Compare Rancho Santa Margarita's Climate with Cities Worldwide