May weather forecast
San Leandro, CA

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Weather in May

May, the last month of the spring in San Leandro, is an agreeable month, with an average temperature varying between 68.9°F (20.5°C) and 49.6°F (9.8°C).

Temperature

San Leandro marks the onset of May with an average high-temperature of a pleasant 68.9°F (20.5°C), subtly divergent from April's 65.3°F (18.5°C). The low-temperature averages to a chilly 49.6°F (9.8°C) during the nights of May.

Humidity

In San Leandro, the average relative humidity in May is 69%.

Rainfall

In San Leandro, in May, during 4 rainfall days, 0.31" (8mm) of precipitation is typically accumulated. Throughout the year, there are 57.7 rainfall days, and 5.71" (145mm) of precipitation is accumulated.

Daylight

The average length of the day in May is 14h and 13min.
On the first day of the month, sunrise is at 6:11 am and sunset at 7:59 pm. On the last day of May, sunrise is at 5:48 am and sunset at 8:24 pm PDT.

Sunshine

The average sunshine in May is 10.9h.

UV index

In San Leandro, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for average individuals.
Note: The maximum UV index of 5 during May translates into these guidelines:
Adopt protective measures - Suggestions to resist sunburn are offered. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.

Frequently asked questions

What is the temperature in May in San Leandro?

May temperatures vary between a high-temperature of 68.9°F (20.5°C) and a low-temperature of 49.6°F (9.8°C).

What is the average humidity in May in San Leandro?

The average relative humidity in May is 69%.

How much does it rain in San Leandro in May?

In San Leandro, in May, it is raining for 4 days, with typically 0.31" (8mm) of accumulated precipitation.

What is the average length of the day in May in San Leandro?

In May, the average day length in San Leandro, California, is 14h and 13min.

What time are sunrise and sunset in May in San Leandro?

In May, on the first day of the month, sunrise is at 6:11 am and sunset at 7:59 pm. On the last day of the month, in San Leandro, sunrise is at 5:48 am and sunset at 8:24 pm PDT.

How many hours of sunshine does San Leandro have in May?

In San Leandro, California, the average sunshine duration in May is 10.9h.

How high is the UV index in May in San Leandro?

The average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from 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
San Leandro, CA

Average temperature in May - San Leandro, CA
  • Average high temperature in May: 68.9°F

The warmest months (with the highest average high temperature) are July and September (77.7°F).
The month with the lowest average high temperature is December (55.8°F).

  • Average low temperature in May: 49.6°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 (44.1°F).

Average pressure in May
San Leandro, CA

Average pressure in May - San Leandro, 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).

Average wind speed in May
San Leandro, CA

Average wind speed in May - San Leandro, CA
  • Average wind speed in May: 7mph

The windiest month (with the highest average wind speed) is May (7mph).
The calmest month (with the lowest average wind speed) is November (4.8mph).

Average humidity in May
San Leandro, CA

Average humidity in May - San Leandro, CA
  • Average humidity in May: 69%

The month with the highest relative humidity is March (75%).
The months with the lowest relative humidity are September and October (64%).

Average rainfall in May
San Leandro, CA

Average rainfall in May - San Leandro, CA
  • Average rainfall in May: 0.31"

The wettest month (with the highest rainfall) is February (1.26").
The driest months (with the least rainfall) are July, August and September (0.04").

Average rainfall days in May
San Leandro, CA

Average rainfall days in May - San Leandro, CA
  • Average rainfall days in May: 4 days

The month with the highest number of rainy days is March (10.2 days).
The month with the least rainy days is August (0.7 days).

Average daylight in May /
Average sunshine in May
San Leandro, CA

Average daylight in May / Average sunshine in May - San Leandro, 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 5min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).

Average sunshine days in May
San Leandro, CA

Average sunshine days in May - San Leandro, CA
  • Average sunshine days in May: 23.9 days

The month with the most sunshine days is July (27.1 days).
The month with the least sunshine days is March (19.1 days).

Average UV index in May
San Leandro, CA

Average UV index in May - San Leandro, CA
  • Average UV index in May: 5

The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).

Average cloud cover in May
San Leandro, CA

Average cloud cover in May - San Leandro, CA
  • Average cloud cover in May: 23

The month with the most cloud cover is March (Cloud cover 34).
The month with the least cloud cover is July (Cloud cover 8).

Average visibility in May
San Leandro, CA

Average visibility in May - San Leandro, 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).

San Leandro, California, USA

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