May Weather in South Bay, United States

Last updated: June 24, 2025

In May, the average temperature in South Bay, United States hovers around 26°C (79°F), creating a warm and inviting atmosphere. You'll experience a minimum of 19°C (66°F) and a comfortable maximum reaching up to 33°C (92°F). While the region sees an average precipitation of 138 mm (5.4 in) over about 13 days, the humidity remains relatively pleasant at 65%. Perfect weather for exploration or relaxation!

May Temperature in South Bay

In May in South Bay, the average temperature is 26°C (79°F), with maximums reaching 33°C (92°F) and minimums dropping to as low as 19°C (66°F). Overall, this makes it an ideal time for traveling, offering warm and pleasant weather for exploring the area.

May Weather in South Bay: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in South Bay, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In South Bay, May typically has an average temperature of 26°C (79°F), with highs reaching up to 33°C (92°F) and lows dropping to around 19°C (66°F).

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

May Precipitation in South Bay

In South Bay in May, the precipitation amount is 138 mm (5.4 in) over the course of 13 days.

May Precipitation Trends in South Bay

The chart displays monthly precipitation patterns in South Bay, 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 South Bay, May typically receives around 138 mm (5.4 inches) of precipitation spread over approximately 13 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 South Bay

In South Bay in May, humidity is 65%. With an average temperature of 26°C (79°F), this humidity feels like a warm, enveloping blanket, making travel quite sticky and uncomfortable.

May Average Humidity in South Bay

This chart illustrates the average monthly humidity levels in South Bay, 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 South Bay is approximately 65%, 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 South Bay

In South Bay 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 South Bay.

Maximum UV Index Levels in South Bay for May

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

Data source: South Bay 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 South Bay Compares to Other Months

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

This table compares monthly weather conditions in South Bay, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	19°C (67°F)	39 mm (1.5 inches)	83%	high
February Weather	21°C (71°F)	40 mm (1.6 inches)	80%	very high
March Weather	22°C (72°F)	26 mm (1.0 inches)	75%	very high
April Weather	25°C (76°F)	53 mm (2.1 inches)	68%	extreme
May Weather	26°C (79°F)	138 mm (5.4 inches)	65%	extreme
June Weather	27°C (81°F)	192 mm (7.6 inches)	73%	extreme
July Weather	28°C (82°F)	166 mm (6.5 inches)	77%	extreme
August Weather	28°C (82°F)	200 mm (7.9 inches)	80%	extreme
September Weather	27°C (82°F)	161 mm (6.3 inches)	83%	extreme
October Weather	26°C (80°F)	123 mm (4.8 inches)	83%	very high
November Weather	23°C (74°F)	49 mm (1.9 inches)	83%	high
December Weather	20°C (69°F)	40 mm (1.6 inches)	84%	moderate