May weather forecast and climate
Rancho Bernardo, CA

Weather in May

May, the last month of the spring, in Rancho Bernardo, is another pleasant month, with temperature in the range of an average high of 71.6°F (22°C) and an average low of 52.5°F (11.4°C).

Temperature

In Rancho Bernardo, the average high-temperature is practically the same as in April - a still pleasant 71.6°F (22°C). In Rancho Bernardo, California, the average low-temperature is 52.5°F (11.4°C).

Humidity

May is the most humid month, with an average relative humidity of 68%.

Rainfall

In Rancho Bernardo, during May, the rain falls for 4 days and regularly aggregates up to 0.35" (9mm) of precipitation. In Rancho Bernardo, during the entire year, the rain falls for 54.7 days and collects up to 8.15" (207mm) of precipitation.

Daylight

In Rancho Bernardo, the average length of the day is 13.9h.

Sunshine

The average sunshine in Rancho Bernardo is 10.9h.

UV index

In May, the average daily maximum UV index in Rancho Bernardo is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to the UV radiation for the average person.
Note: The average daily UV index of 5 in May transform into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in May in Rancho Bernardo?

In Rancho Bernardo, California, in May, the average high-temperature is 71.6°F (22°C), and the average low-temperature is 52.5°F (11.4°C).

What is the most humid month in Rancho Bernardo?

May is the most humid month in Rancho Bernardo, California, with an average relative humidity of 68%.

What is the average humidity in May in Rancho Bernardo?

In Rancho Bernardo, the average relative humidity in May is 68%.

How many days does it rain in May in Rancho Bernardo?

In Rancho Bernardo, during May, the rain falls for 4 days and regularly aggregates up to 0.35" (9mm) of precipitation.

What is the average length of the day in May in Rancho Bernardo?

In Rancho Bernardo, California, the average length of the day in May is 13.9h.

How many hours of sunshine does Rancho Bernardo have in May?

The average sunshine in May in Rancho Bernardo, California, is 10.9h.

How high is the UV index in May in Rancho Bernardo?

In Rancho Bernardo, California, the average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a medium health risk from unprotected exposure to the UV radiation.

Average temperature in May
Rancho Bernardo, CA

Average temperature in May - Rancho Bernardo, CA
  • Average high temperature in May: 71.6°F

The warmest month (with the highest average high temperature) is August (84.2°F).
The month with the lowest average high temperature is December (63.9°F).

  • Average low temperature in May: 52.5°F

The month with the highest average low temperature is August (64.4°F).
The coldest month (with the lowest average low temperature) is February (47.1°F).

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Average pressure in May
Rancho Bernardo, CA

Average pressure in May - Rancho Bernardo, CA
  • Average pressure in May: 29.91"

The month with the highest atmospheric pressure is January (30.09").
Months with the lowest atmospheric pressure are June and September (29.87").

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Average wind speed in May
Rancho Bernardo, CA

Average wind speed in May - Rancho Bernardo, CA
  • Average wind speed in May: 5.3mph

The windiest month (with the highest average wind speed) is April (5.5mph).
The calmest months (with the lowest average wind speed) are September and October (4.3mph).

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Average humidity in May
Rancho Bernardo, CA

Average humidity in May - Rancho Bernardo, CA
  • Average humidity in May: 68%

The month with the highest relative humidity is May (68%).
The month with the lowest relative humidity is November (54%).

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Average rainfall in May
Rancho Bernardo, CA

Average rainfall in May - Rancho Bernardo, CA
  • Average rainfall in May: 0.35"

The wettest month (with the highest rainfall) is February (1.61").
The driest month (with the least rainfall) is June (0.08").

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Average rainfall days in May
Rancho Bernardo, CA

Average rainfall days in May - Rancho Bernardo, CA
  • Average rainfall days in May: 4 days

The month with the highest number of rainy days is March (7.2 days).
The month with the least rainy days is June (1.6 days).

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Average daylight in May /
Average sunshine in May
Rancho Bernardo, CA

Average daylight in May / Average sunshine in May - Rancho Bernardo, CA
  • Average daylight in May: 13.9h

The month with the longest days is June (Average daylight: 14.3h).
The month with the shortest days is December (Average daylight: 10h).

  • Average sunshine in May: 10.9h

The month with the most sunshine is July (Average sunshine: 12h).
Months with the least sunshine are January and December (Average sunshine: 6.7).

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Average sunshine days in May
Rancho Bernardo, CA

Average sunshine days in May - Rancho Bernardo, CA
  • Average sunshine days in May: 24.5 days

The month with the most sunshine days is June (27 days).
The month with the least sunshine days is February (21.2 days).

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Average UV index in May
Rancho Bernardo, CA

Average UV index in May - Rancho Bernardo, CA
  • Average UV index in May: 5

Months with the highest UV index are June, July, August and September (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 4).

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Average cloud cover in May
Rancho Bernardo, CA

Average cloud cover in May - Rancho Bernardo, CA
  • Average cloud cover in May: 20

The month with the most cloud cover is March (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 7).

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Average visibility in May
Rancho Bernardo, CA

Average visibility in May - Rancho Bernardo, 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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