May weather forecastVista, CA
May
Weather in May
May, the last month of the spring in Vista, is another pleasant month, with an average temperature varying between 69.8°F (21°C) and 54°F (12.2°C).Temperature
Transitioning from April to May, Vista observes an average high-temperature of a still agreeable 69.8°F (21°C), differing subtly from the previous month. The month of May records an average low-temperature of 54°F (12.2°C).Humidity
With an average relative humidity of 70%, May is the most humid month.Rainfall
In Vista, during May, the rain falls for 5.2 days and regularly aggregates up to 0.35" (9mm) of precipitation. In Vista, during the entire year, the rain falls for 62.9 days and collects up to 9.17" (233mm) of precipitation.Daylight
The average length of the day in May is 13h and 53min.On the first day of May, sunrise is at 6:00 am and sunset at 7:31 pm. On the last day of the month, sunrise is at 5:40 am and sunset at 7:52 pm PDT.
Sunshine
In May, the average sunshine is 11.2h.UV index
In Vista, 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 the average person.Note: In May, a regular UV index of 5 translates into these guidelines:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Vista, CA
- Average high temperature in May: 69.8°F
The warmest month (with the highest average high temperature) is August (81.1°F).
The month with the lowest average high temperature is December (62.6°F).
- Average low temperature in May: 54°F
The month with the highest average low temperature is August (63.9°F).
The coldest month (with the lowest average low temperature) is February (48.4°F).
Average pressure in May
Vista, CA
- Average pressure in May: 29.91"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in May
Vista, CA
- Average wind speed in May: 5.7mph
The windiest month (with the highest average wind speed) is April (5.8mph).
The calmest month (with the lowest average wind speed) is October (4.5mph).
Average humidity in May
Vista, CA
- Average humidity in May: 70%
The month with the highest relative humidity is May (70%).
The month with the lowest relative humidity is November (57%).
Average rainfall in May
Vista, CA
- Average rainfall in May: 0.35"
The wettest month (with the highest rainfall) is December (1.85").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in May
Vista, CA
- Average rainfall days in May: 5.2 days
The month with the highest number of rainy days is March (8.3 days).
The month with the least rainy days is June (1.6 days).
Average daylight in May /
Average sunshine in May
Vista, CA
- Average daylight in May: 13h and 54min
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: 11h and 12min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in May
Vista, CA
- Average sunshine days in May: 21.5 days
The month with the most sunshine days is October (24.6 days).
The month with the least sunshine days is February (19.7 days).
Average UV index in May
Vista, CA
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).
Average cloud cover in May
Vista, CA
- Average cloud cover in May: 19
The months with the most cloud cover are March and December (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 7).
Average visibility in May
Vista, 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).
