May weather forecast
Oakland, CA

Share

Weather in May

May is a delightful time of the year in Oakland. With the progress of spring, the weather continues its warming trend, and the city experiences noticeably longer hours of daylight. The frequency of rainfall reduces drastically, complementing the boosted temperatures. Additionally, May continues to uphold consistent sea temperatures. The most striking detail comes in the meager amount of precipitation, registering merely 0.2" (5mm) over close to three days, making it an ideal time to explore Oakland outdoors. The weather in June shows a continued rise in temperature and a notable drop in other weather extremes.

Temperature

With the arrival of May, Oakland's average high-temperature registers at a still comfortable 65.8°F (18.8°C), indicating a subtle variation from the previous month. Oakland temperatures generally rest at a low of 50.4°F (10.2°C) during the May nights.

Humidity

In Oakland, the average relative humidity in May is 73%.

Rainfall

In Oakland, during May, the rain falls for 2.8 days and regularly aggregates up to 0.2" (5mm) of precipitation. Throughout the year, there are 44 rainfall days, and 3.03" (77mm) of precipitation is accumulated.

Ocean temperature

April through June, with an average ocean temperature of 53.1°F (11.7°C), are months with the coldest seawater in Oakland.
Note: Navigating the 53.1°F (11.7°C) at 55.4°F (13°C) is no joy, and temperatures less than 50°F (10°C) can threaten breathing and cause a chilling shock, gauging personal stamina.

Daylight

In May, the average length of the day in Oakland is 14h and 14min.
On the first day of the month, sunrise is at 6:12 am and sunset at 8:00 pm. On the last day of May, in Oakland, sunrise is at 5:48 am and sunset at 8:25 pm PDT.

Sunshine

The average sunshine in May in Oakland is 10.7h.

UV index

The months with the highest UV index in Oakland are April through September, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: During May, 5 as the daily maximum UV index converts into the following advice:
Exercise prevention - Warding off sunburn is urged. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Stay sun-safe with clothing that is both closely woven and worn loosely.
[Resources]

Frequently asked questions

What is the temperature in May in Oakland?

The average high-temperature, in May, in Oakland, is 65.8°F (18.8°C), while the average low-temperature is 50.4°F (10.2°C).

What is the average humidity in May in Oakland?

In Oakland, the average relative humidity in May is 73%.

How much does it rain in Oakland in May?

In Oakland, California, in May, during 2.8 rainfall days, 0.2" (5mm) of precipitation is typically accumulated.

What are the months with the coldest ocean in Oakland?

April through June, with an average ocean temperature of 53.1°F (11.7°C), are months with the coldest seawater in Oakland, California.

What is the ocean temperature in May in Oakland?

In Oakland, in May, the average water temperature is 53.1°F (11.7°C). Swimming in 53.1°F (11.7°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

What is the average length of the day in May in Oakland?

In Oakland, the average day length in May is 14h and 14min.

When is the sunrise / sunset in May in Oakland?

In May, on the first day of the month, sunrise is at 6:12 am and sunset at 8:00 pm. On the last day of the month, in Oakland, California, sunrise is at 5:48 am and sunset at 8:25 pm PDT.

How long on average sun shines in May in Oakland?

The average sunshine duration in May in Oakland, California, is 10.7h.

What are the months with the highest UV index in Oakland?

The months with the highest UV index are April through September, with an average maximum UV index of 5.

How high is the UV index in May in Oakland?

In Oakland, California, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Oakland, CA

Average temperature in May - Oakland, CA
  • Average high temperature in May: 65.8°F

The warmest month (with the highest average high temperature) is September (73.9°F).
The month with the lowest average high temperature is December (55.8°F).

  • Average low temperature in May: 50.4°F

The month with the highest average low temperature is September (56.5°F).
The coldest month (with the lowest average low temperature) is January (45.7°F).

[Resources]

Average pressure in May
Oakland, CA

Average pressure in May - Oakland, CA
  • Average pressure in May: 29.98"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).

[Resources]

Average wind speed in May
Oakland, CA

Average wind speed in May - Oakland, CA
  • Average wind speed in May: 7.6mph

The windiest month (with the highest average wind speed) is May (7.6mph).
The calmest months (with the lowest average wind speed) are October and November (5.5mph).

[Resources]

Average humidity in May
Oakland, CA

Average humidity in May - Oakland, CA
  • Average humidity in May: 73%

The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is October (67%).

[Resources]

Average rainfall in May
Oakland, CA

Average rainfall in May - Oakland, CA
  • Average rainfall in May: 0.2"

The wettest month (with the highest rainfall) is February (0.67").
The driest month (with the least rainfall) is July (0").

[Resources]

Average rainfall days in May
Oakland, CA

Average rainfall days in May - Oakland, CA
  • Average rainfall days in May: 2.8 days

The month with the highest number of rainy days is March (8.5 days).
The months with the least rainy days are June and August (0.8 days).

[Resources]

Average sea temperature in May
Oakland, CA

Average sea temperature in May - Oakland, CA
  • Average sea temperature in May: 53.1°F

The best month for swimming (with the highest average sea temperature) is September (57.3°F).
The coldest months (with the lowest average sea temperature) are April and June (53°F).

[Resources]

Average daylight in May /
Average sunshine in May
Oakland, CA

Average daylight in May / Average sunshine in May - Oakland, CA
  • Average daylight in May: 14h and 1min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in May: 10h and 4min

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).

[Resources]

Average sunshine days in May
Oakland, CA

Average sunshine days in May - Oakland, CA
  • Average sunshine days in May: 26.7 days

The month with the most sunshine days is July (29.7 days).
The month with the least sunshine days is March (20.8 days).

[Resources]

Average UV index in May
Oakland, CA

Average UV index in May - Oakland, CA
  • Average UV index in May: 5

The months with the highest UV index are April, May, June, July, August and September (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 3).

[Resources]

Average cloud cover in May
Oakland, CA

Average cloud cover in May - Oakland, CA
  • Average cloud cover in May: 25

The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 12).

[Resources]

Average visibility in May
Oakland, CA

Average visibility in May - Oakland, CA
  • Average visibility in May: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

[Resources]

Oakland, California, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location