May weather forecastChula Vista, CA
May
Weather in May
As Chula Vista steps into May, unambiguous springtime traits flourish. The shift from spring to summer becomes evident with a significant boost in temperatures. Rainy days become far and few between, further encouraging residents to relish in outdoor activities. A warm sea temperature of 62.7°F (17.1°C) is noteworthy, ideal for several marine-related pastimes. Overall, May's weather forms a fitting prelude to the sunny days looming on the horizon.Temperature
As Chula Vista welcomes May, the average high-temperature records at an agreeable 68.5°F (20.3°C), marking an insignificant deviation from the prior month. During May, Chula Vista consistently records a temperature low averaging a moderate 56.3°F (13.5°C).Humidity
The average relative humidity in May in Chula Vista is 70%.Rainfall
In Chula Vista, during May, the rain falls for 3.9 days and regularly aggregates up to 0.31" (8mm) of precipitation. Throughout the year, in Chula Vista, there are 51 rainfall days, and 5.63" (143mm) of precipitation is accumulated.Ocean temperature
In Chula Vista, in May, the average water temperature is 62.6°F (17°C).Note: For most, swimming in 62.6°F (17°C) is not a pleasant activity. Breathing becomes increasingly challenging as water temperature descends from 69.8°F (21°C) to 59°F (15°C).
Daylight
In Chula Vista, the average length of the day in May is 13h and 51min.On the first day of May in Chula Vista, sunrise is at 6:00 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 5:41 am and sunset at 7:50 pm PDT.
Sunshine
The average sunshine in May is 10.9h.UV index
In Chula Vista, California, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: The average daily UV index of 5 in May transforms into the following instructions:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Chula Vista, CA
- Average high temperature in May: 68.5°F
The warmest month (with the highest average high temperature) is August (79.2°F).
The month with the lowest average high temperature is December (63.7°F).
- Average low temperature in May: 56.3°F
The month with the highest average low temperature is August (66.7°F).
The coldest month (with the lowest average low temperature) is February (51.1°F).
Average pressure in May
Chula Vista, CA
- Average pressure in May: 29.92"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are June and September (29.88"Hg).
Average wind speed in May
Chula Vista, CA
- Average wind speed in May: 6.1mph
The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest month (with the lowest average wind speed) is October (5mph).
Average humidity in May
Chula Vista, CA
- Average humidity in May: 70%
The month with the highest relative humidity is June (71%).
The month with the lowest relative humidity is November (58%).
Average rainfall in May
Chula Vista, CA
- Average rainfall in May: 0.31"
The wettest month (with the highest rainfall) is February (1.1").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in May
Chula Vista, CA
- Average rainfall days in May: 3.9 days
The month with the highest number of rainy days is March (7.2 days).
The month with the least rainy days is June (1.7 days).
Average sea temperature in May
Chula Vista, CA
- Average sea temperature in May: 62.7°F
The best month for swimming (with the highest average sea temperature) is August (67.9°F).
The coldest month (with the lowest average sea temperature) is February (58.7°F).
Average daylight in May /
Average sunshine in May
Chula Vista, CA
- Average daylight in May: 13h and 48min
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 54min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in May
Chula Vista, CA
- Average sunshine days in May: 24.4 days
The month with the most sunshine days is June (27.2 days).
The month with the least sunshine days is February (21.1 days).
Average UV index in May
Chula Vista, 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, March, November and December (UV index 4).
Average cloud cover in May
Chula Vista, CA
- Average cloud cover in May: 22
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 8).
Average visibility in May
Chula 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).
