May weather forecast and climate
Oakley, CA

Weather in May

The last month of the spring, May, is a warm month in Oakley, California, with average temperature varying between 75.6°F (24.2°C) and 50.5°F (10.3°C).

Temperature

In May, the average high-temperature marginally rises, from a pleasant 69.4°F (20.8°C) in April, to a warm 75.6°F (24.2°C). In May, the average low-temperature is 50.5°F (10.3°C).

Humidity

The average relative humidity in Oakley is 60%.

Rainfall

In Oakley, in May, it is raining for 4 days, with typically 0.43" (11mm) of accumulated precipitation. In Oakley, during the entire year, the rain falls for 62 days and collects up to 10.16" (258mm) of precipitation.

Snowfall

January through November are months without snowfall in Oakley.

Daylight

In May, the average length of the day in Oakley is 14.3h.

Sunshine

The average sunshine in May is 11.2h.

UV index

The average daily maximum UV index in Oakley is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from the exposure to the Sun's UV rays for average individuals.
Note: In May, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against the skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in May in Oakley?

In May, in Oakley, the average high-temperature is 75.6°F (24.2°C), and the average low-temperature is 50.5°F (10.3°C).

What is the average humidity in May in Oakley?

In May, the average relative humidity in Oakley, California, is 60%.

How many days does it rain in May in Oakley?

In Oakley, in May, during 4 rainfall days, 0.43" (11mm) of precipitation is typically accumulated.

When it does not snow in Oakley?

January through November are months without snowfall in Oakley.

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

In Oakley, the average length of the day in May is 14.3h.

How long on average sun shines in May in Oakley?

In Oakley, California, the average sunshine in May is 11.2h.

What is the UV index reading in May in Oakley?

In May, the average daily maximum UV index in Oakley is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health from the exposure to the Sun's UV rays.

Average temperature in May
Oakley, CA

Average temperature in May - Oakley, CA
  • Average high temperature in May: 75.6°F

The warmest month (with the highest average high temperature) is July (88.5°F).
The month with the lowest average high temperature is December (55°F).

  • Average low temperature in May: 50.5°F

The month with the highest average low temperature is September (57.7°F).
The coldest month (with the lowest average low temperature) is January (41.5°F).

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Average pressure in May
Oakley, CA

Average pressure in May - Oakley, CA
  • Average pressure in May: 29.97"

The month with the highest atmospheric pressure is January (30.14").
The month with the lowest atmospheric pressure is June (29.91").

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Average wind speed in May
Oakley, CA

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

The windiest month (with the highest average wind speed) is June (7.8mph).
The calmest months (with the lowest average wind speed) are January and November (4.5mph).

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Average humidity in May
Oakley, CA

Average humidity in May - Oakley, CA
  • Average humidity in May: 60%

The month with the highest relative humidity is January (74%).
The month with the lowest relative humidity is September (52%).

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Average rainfall in May
Oakley, CA

Average rainfall in May - Oakley, CA
  • Average rainfall in May: 0.43"

The wettest month (with the highest rainfall) is February (2.09").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days in May
Oakley, CA

Average rainfall days in May - Oakley, CA
  • Average rainfall days in May: 4 days

The month with the highest number of rainy days is March (12.3 days).
The month with the least rainy days is August (0.8 days).

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Average snowfall days in May
Oakley, CA

Average snowfall days in May - Oakley, CA
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is December (0.1 days).
Months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).

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

Average daylight in May / Average sunshine in May - Oakley, CA
  • Average daylight in May: 14.3h

The month with the longest days is June (Average daylight: 14.8h).
The month with the shortest days is December (Average daylight: 9.6h).

  • Average sunshine in May: 11.2h

The month with the most sunshine is July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 5.8h).

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Average sunshine days in May
Oakley, CA

Average sunshine days in May - Oakley, CA
  • Average sunshine days in May: 26.6 days

The month with the most sunshine days is August (29.8 days).
The month with the least sunshine days is March (17.7 days).

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Average UV index in May
Oakley, CA

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

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in May
Oakley, CA

Average cloud cover in May - Oakley, CA
  • Average cloud cover in May: 19

Months with the most cloud cover are March and December (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 5).

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Average visibility in May
Oakley, CA

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

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

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