May Weather in Oakland, United States

Last updated: June 24, 2025

In May, the average temperature in Oakland, United States hovers around 16°C (62°F). However, be prepared for a range of weather, with temperatures dipping as low as 1°C (35°F) and spiking to a sizzling 36°C (97°F). During this month, expect about 152 mm (6.0 in) of precipitation spread over 15 days, contributing to an average humidity of 78%.

May Temperature in Oakland

In May in Oakland, the average temperature is 16°C (62°F), with maximums reaching 36°C (97°F) and minimums dropping as low as 1°C (35°F). This wide temperature range makes it essential for travelers to pack both lightweight clothing for the warm days and warmer layers for the cooler nights.

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

The chart illustrates May temperature patterns in Oakland, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Oakland, May typically has an average temperature of 16°C (62°F), with highs reaching up to 36°C (97°F) and lows dropping to around 1°C (35°F).

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

May Precipitation in Oakland

In Oakland in May, the precipitation amount is 152 mm (6.0 in) over the course of 15 days.

May Precipitation Trends in Oakland

The chart displays monthly precipitation patterns in Oakland, 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 Oakland, May typically receives around 152 mm (6.0 inches) of precipitation spread over approximately 15 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 Oakland

In Oakland in May, humidity is 78%. With an average temperature of 16°C (62°F), this humidity feels like a warm blanket wrapping around you, making outdoor activities enjoyable yet slightly sticky. Travelers may find the weather pleasantly mild, though they'll appreciate having light, breathable clothing on hand to stay comfortable while exploring.

May Average Humidity in Oakland

This chart illustrates the average monthly humidity levels in Oakland, 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 Oakland is approximately 78%, 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 Oakland

In Oakland in May, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Oakland.

Maximum UV Index Levels in Oakland for May

The chart shows the monthly maximum UV Index (UVI) for Oakland 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 Oakland typically reaches 9, which falls under the very high exposure category.

Data source: Oakland 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 Oakland Compares to Other Months

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

This table compares monthly weather conditions in Oakland, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (24°F)	30 mm (1.2 inches)	76%	moderate
February Weather	-4°C (24°F)	29 mm (1.2 inches)	80%	moderate
March Weather	4°C (40°F)	92 mm (3.6 inches)	73%	high
April Weather	9°C (49°F)	65 mm (2.6 inches)	74%	very high
May Weather	16°C (62°F)	152 mm (6.0 inches)	78%	very high
June Weather	24°C (75°F)	116 mm (4.6 inches)	82%	very high
July Weather	25°C (77°F)	71 mm (2.8 inches)	83%	very high
August Weather	23°C (74°F)	113 mm (4.4 inches)	80%	very high
September Weather	20°C (69°F)	78 mm (3.1 inches)	75%	very high
October Weather	11°C (52°F)	95 mm (3.7 inches)	75%	high
November Weather	4°C (39°F)	29 mm (1.1 inches)	82%	moderate
December Weather	-1°C (30°F)	44 mm (1.7 inches)	83%	low