Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
The arrival of May coincides with an average high-temperature of a still agreeable 71.6°F (22°C), indicating a minimal shift from April's 70.2°F (21.2°C). Rancho Bernardo's May nights cool down to an average low-temperature of 52.5°F (11.4°C).Humidity
May is the most humid month, with an average relative humidity of 68%.Rainfall
In May, the rain falls for 4 days. Throughout May, 0.35" (9mm) of precipitation is accumulated. Throughout the year, there are 54.7 rainfall days, and 8.15" (207mm) of precipitation is accumulated.Daylight
The average length of the day in May is 13h and 53min.On the first day of May, sunrise is at 5:59 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 5:40 am and sunset at 7:51 pm PDT.
Sunshine
In Rancho Bernardo, the average sunshine in May is 10.9h.UV index
The average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum UV index, 5 during May, leads to the following recommendations:
Heed the precautions - It is counselled to guard against solar damage. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in May?
What is the most humid month?
What is the average humidity in May?
How much does it rain in May?
How many hours of daylight does Rancho Bernardo have in May?
What time are sunrise and sunset in May?
How many hours of sunshine does Rancho Bernardo have in May?
How high is the UV index in May?
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).
Average pressure in May
Rancho Bernardo, CA
- Average pressure in May: 29.91"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are June and September (29.87"Hg).
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).
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%).
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").
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).
Average daylight in May /
Average sunshine in May
Rancho Bernardo, CA
- Average daylight in May: 13h and 5min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in May: 10h and 5min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 6h and 42min).
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).
Average UV index in May
Rancho Bernardo, CA
- Average UV index in May: 5
The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 4).
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).
Average visibility in May
Rancho Bernardo, 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).
Rancho Bernardo, California, USA
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