May weather forecast and climate
Belvedere, CA

Weather in May

The last month of the spring, May, is another comfortable month in Belvedere, California, with temperature in the range of an average high of 64.4°F (18°C) and an average low of 50.7°F (10.4°C).

Temperature

In May, the average high-temperature is practically the same as in April - a still comfortable 64.4°F (18°C). The average low-temperature, in May, is 50.7°F (10.4°C).

Humidity

The average relative humidity in Belvedere is 74%.

Rainfall

In Belvedere, during 4.4 rainfall days, 0.28" (7mm) of precipitation is typically accumulated. In Belvedere, California, during the entire year, the rain falls for 64.2 days and collects up to 4.8" (122mm) of precipitation.

Ocean temperature

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

Daylight

In Belvedere, the average length of the day is 14.2h.

Sunshine

The average sunshine in May is 10.2h.

UV index

In May, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 4 in May transform into the following instructions:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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 Belvedere?

The average high-temperature, in May, in Belvedere, is 64.4°F (18°C), while the average low-temperature is 50.7°F (10.4°C).

What is the average humidity in May in Belvedere?

The average relative humidity in May in Belvedere is 74%.

How much does it rain in Belvedere in May?

In Belvedere, in May, during 4.4 rainfall days, 0.28" (7mm) of precipitation is typically accumulated.

What are the months with the coldest ocean in Belvedere?

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

How cold is the water in May in Belvedere?

In Belvedere, in May, the average water temperature is 53.1°F (11.7°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

How many hours of daylight does Belvedere have in May?

The average length of the day in May in Belvedere, California, is 14.2h.

How many hours of sunshine does Belvedere have in May?

In May, the average sunshine in Belvedere, California, is 10.2h.

How high is the UV index in May in Belvedere?

In Belvedere, California, the average daily maximum UV index in May is 4. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unsafe exposure to the Sun's UV rays.

Average temperature in May
Belvedere, CA

Average temperature in May - Belvedere, CA
  • Average high temperature in May: 64.4°F

The warmest month (with the highest average high temperature) is September (72.3°F).
The month with the lowest average high temperature is December (55.2°F).

  • Average low temperature in May: 50.7°F

The month with the highest average low temperature is September (56.5°F).
The coldest months (with the lowest average low temperature) are January and December (46.2°F).

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Average pressure in May
Belvedere, CA

Average pressure in May - Belvedere, CA
  • Average pressure in May: 29.98"

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

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Average wind speed in May
Belvedere, CA

Average wind speed in May - Belvedere, CA
  • Average wind speed in May: 7.9mph

The windiest month (with the highest average wind speed) is May (7.9mph).
The calmest months (with the lowest average wind speed) are October and November (5.7mph).

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Average humidity in May
Belvedere, CA

Average humidity in May - Belvedere, CA
  • Average humidity in May: 74%

Months with the highest relative humidity are March and August (76%).
The month with the lowest relative humidity is October (68%).

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Average rainfall in May
Belvedere, CA

Average rainfall in May - Belvedere, CA
  • Average rainfall in May: 0.28"

The wettest month (with the highest rainfall) is February (0.98").
The driest months (with the least rainfall) are June, July, August and September (0.08").

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Average rainfall days in May
Belvedere, CA

Average rainfall days in May - Belvedere, CA
  • Average rainfall days in May: 4.4 days

The month with the highest number of rainy days is March (10.5 days).
The month with the least rainy days is June (1.9 days).

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Average sea temperature in May
Belvedere, CA

Average sea temperature in May - Belvedere, 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).

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

Average daylight in May / Average sunshine in May - Belvedere, CA
  • Average daylight in May: 14.2h

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: 10.2h

The month with the most sunshine is July (Average sunshine: 11.4h).
The month with the least sunshine is December (Average sunshine: 5.7h).

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Average sunshine days in May
Belvedere, CA

Average sunshine days in May - Belvedere, CA
  • Average sunshine days in May: 22.2 days

The month with the most sunshine days is October (25 days).
The month with the least sunshine days is March (18.4 days).

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Average UV index in May
Belvedere, CA

Average UV index in May - Belvedere, CA
  • Average UV index in May: 4

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

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Average cloud cover in May
Belvedere, CA

Average cloud cover in May - Belvedere, CA
  • Average cloud cover in May: 30

The month with the most cloud cover is March (Cloud cover 38).
The month with the least cloud cover is September (Cloud cover 18).

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Average visibility in May
Belvedere, CA

Average visibility in May - Belvedere, 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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