May Weather in Santa Ana, Mexico

Last updated: August 26, 2025

In May, the average temperature in Santa Ana, Mexico hovers around 20°C (68°F), with minimums reaching 9°C (49°F) and maximums soaring to 31°C (89°F). Expect 114 mm (4.5 in) of precipitation spread over 14 days, accompanied by an average humidity of 75%.

May Temperature in Santa Ana

In May in Santa Ana, the average temperature is 20°C (68°F), with maximums reaching 31°C (89°F) and minimums dipping as low as 9°C (49°F). This makes it an ideal time for travelers to enjoy a comfortable climate for outdoor adventures and sightseeing.

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

The chart illustrates May temperature patterns in Santa Ana, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santa Ana, May typically has an average temperature of 20°C (68°F), with highs reaching up to 31°C (89°F) and lows dropping to around 9°C (49°F).

Data source: Temperature data for Santa Ana generated using information from the Copernicus Climate Change Service.

May Precipitation in Santa Ana

In Santa Ana in May, the total precipitation amount is 114 mm (4.5 in) over the course of 14 days.

May Precipitation Trends in Santa Ana

The chart displays monthly precipitation patterns in Santa Ana, 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 Santa Ana, May typically receives around 114 mm (4.5 inches) of precipitation spread over approximately 14 days.

Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

May Humidity in Santa Ana

In Santa Ana in May, humidity is 75%. With an average temperature of 20°C (68°F), this humidity feels like a warm, muggy embrace that can leave travelers feeling sticky and exhausted.

May Average Humidity in Santa Ana

This chart illustrates the average monthly humidity levels in Santa Ana, 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 Santa Ana is approximately 75%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Santa Ana

In Santa Ana 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 Santa Ana, you can check here.

Maximum UV Index Levels in Santa Ana for May

The chart shows the monthly maximum UV Index (UVI) for Santa Ana 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 Santa Ana typically reaches 14, which falls under the extreme exposure category.

Data source: Santa Ana 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 Santa Ana Compares to Other Months

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

This table compares monthly weather conditions in Santa Ana, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	14°C (58°F)	15 mm (0.6 inches)	70%	very high
February Weather	16°C (61°F)	12 mm (0.5 inches)	64%	extreme
March Weather	18°C (65°F)	18 mm (0.7 inches)	54%	extreme
April Weather	19°C (67°F)	12 mm (0.5 inches)	61%	extreme
May Weather	20°C (68°F)	114 mm (4.5 inches)	75%	extreme
June Weather	19°C (66°F)	366 mm (14.4 inches)	83%	extreme
July Weather	18°C (64°F)	503 mm (19.8 inches)	83%	extreme
August Weather	18°C (64°F)	490 mm (19.3 inches)	85%	extreme
September Weather	18°C (64°F)	369 mm (14.5 inches)	85%	extreme
October Weather	17°C (64°F)	169 mm (6.6 inches)	79%	extreme
November Weather	16°C (61°F)	65 mm (2.5 inches)	76%	very high
December Weather	14°C (58°F)	11 mm (0.4 inches)	74%	very high