May Weather in Santee, United States

Last updated: June 24, 2025

In Santee, United States, the average temperature in May hovers around 23°C (74°F), making it a pleasant time to visit. However, temperatures can vary significantly, with a minimum of 7°C (45°F) and a scorching maximum of 38°C (101°F). Visitors should be prepared for occasional showers, as the region experiences 92 mm (3.6 in) of precipitation over 9 days during this month. With an average humidity of 75%, make sure to stay hydrated while enjoying the beautiful landscapes!

May Temperature in Santee

In May in Santee, the average temperature is 23°C (74°F). The maximum can reach 38°C (101°F), and the minimum can be as low as 7°C (45°F). Pack accordingly to enjoy your trip, as the varying temperatures will require both light clothing for daytime and warmer layers for cooler nights.

May Weather in Santee: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Santee, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santee, May typically has an average temperature of 23°C (74°F), with highs reaching up to 38°C (101°F) and lows dropping to around 7°C (45°F).

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

May Precipitation in Santee

In Santee in May, the precipitation amount is 92 mm (3.6 in) during 9 days, indicating a relatively wet period for the region.

May Precipitation Trends in Santee

The chart displays monthly precipitation patterns in Santee, 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 Santee, May typically receives around 92 mm (3.6 inches) of precipitation spread over approximately 9 days.

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

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Millimeters (mm) Inches (in)

May Humidity in Santee

In Santee in May, humidity is 75%. With an average temperature of 23°C (74°F), this humidity feels like a warm, heavy blanket wrapping around you, making it feel more sweltering than it actually is, which can be quite uncomfortable for traveling.

May Average Humidity in Santee

This chart illustrates the average monthly humidity levels in Santee, 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 Santee 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 Santee

In Santee 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 Santee.

Maximum UV Index Levels in Santee for May

The chart shows the monthly maximum UV Index (UVI) for Santee 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 Santee typically reaches 11, which falls under the extreme exposure category.

Data source: Santee 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 Santee Compares to Other Months

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

This table compares monthly weather conditions in Santee, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	10°C (50°F)	75 mm (2.9 inches)	86%	moderate
February Weather	13°C (55°F)	95 mm (3.7 inches)	81%	high
March Weather	15°C (59°F)	76 mm (3.0 inches)	81%	very high
April Weather	19°C (66°F)	114 mm (4.5 inches)	79%	very high
May Weather	23°C (74°F)	92 mm (3.6 inches)	75%	extreme
June Weather	26°C (79°F)	114 mm (4.5 inches)	75%	extreme
July Weather	28°C (82°F)	158 mm (6.2 inches)	80%	extreme
August Weather	27°C (81°F)	136 mm (5.3 inches)	81%	extreme
September Weather	25°C (78°F)	116 mm (4.6 inches)	83%	very high
October Weather	21°C (70°F)	61 mm (2.4 inches)	78%	very high
November Weather	13°C (56°F)	66 mm (2.6 inches)	85%	high
December Weather	11°C (52°F)	137 mm (5.4 inches)	87%	moderate