May Weather in Oakland, United States

Last updated: June 24, 2025

In Oakland, United States, the average temperature in May is a pleasant 23°C (74°F). However, temperatures can vary significantly, with a minimum of 6°C (43°F) and a maximum reaching up to 38°C (100°F). Expect about 97 mm (3.8 in) of precipitation spread across 9 days, and enjoy a relatively high average humidity of 75%.

May Temperature in Oakland

In May in Oakland, the average temperature is 23°C (74°F). Maximum temperatures can reach up to 38°C (100°F), while minimums can drop as low as 6°C (43°F). This range makes it essential to pack accordingly for your travels, ensuring you are prepared for both warm days and 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 23°C (74°F), with highs reaching up to 38°C (100°F) and lows dropping to around 6°C (43°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 total precipitation amount reaches 97 mm (3.8 in) over the course of 9 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 97 mm (3.8 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 Oakland

In Oakland 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 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 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 Oakland

In Oakland 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 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 11, which falls under the extreme 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	9°C (48°F)	81 mm (3.2 inches)	86%	moderate
February Weather	12°C (54°F)	97 mm (3.8 inches)	81%	high
March Weather	14°C (58°F)	72 mm (2.8 inches)	81%	very high
April Weather	18°C (65°F)	108 mm (4.3 inches)	79%	very high
May Weather	23°C (74°F)	97 mm (3.8 inches)	75%	extreme
June Weather	26°C (79°F)	120 mm (4.7 inches)	75%	extreme
July Weather	28°C (82°F)	140 mm (5.5 inches)	80%	extreme
August Weather	27°C (81°F)	126 mm (5.0 inches)	81%	very high
September Weather	25°C (77°F)	121 mm (4.8 inches)	83%	very high
October Weather	20°C (69°F)	62 mm (2.5 inches)	78%	very high
November Weather	13°C (55°F)	66 mm (2.6 inches)	85%	high
December Weather	10°C (51°F)	140 mm (5.5 inches)	87%	moderate