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 snowfall in May
- Average snowfall 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 start of May sees the average high-temperature at a tropical 88.9°F (31.6°C), showing little difference from April's 83.8°F (28.8°C). In the month of May, San Diego witnesses a consistent average low-temperature of 70.3°F (21.3°C).Heat index
May's heat index is calculated to be an extremely hot 104°F (40°C). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.In terms of the heat index, values are set with light wind and shade conditions in mind. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', combines both the air temperature and the humidity level to give a perceived human temperature. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
Perspiring is the body's way of cooling down, particularly by allowing sweat to evaporate and take the heat with it. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.
Humidity
May is the most humid month, with an average relative humidity of 72%.Rainfall
In May, the rain falls for 12.5 days. Throughout May, 1.93" (49mm) of precipitation is accumulated. Throughout the year, there are 123.7 rainfall days, and 15.24" (387mm) of precipitation is accumulated.Snowfall
In San Diego, snow does not fall in March through November.Daylight
In San Diego, the average length of the day in May is 13h and 32min.On the first day of May in San Diego, sunrise is at 6:52 am and sunset at 8:07 pm. On the last day of the month, sunrise is at 6:37 am and sunset at 8:24 pm CDT.
Sunshine
In May, the average sunshine is 9h.UV index
In May, the average daily maximum UV index is 7. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 7 in May interprets into the following recommendations:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in San Diego in May?
What is the most humid month in San Diego?
What is the average humidity in May in San Diego?
How much does it rain in San Diego in May?
When it does not snow in San Diego?
How many hours of daylight does San Diego have in May?
When are sunrise and sunset in May in San Diego?
How long on average sun shines in May in San Diego?
What is the UV index reading in May in San Diego?
Average temperature in May
San Diego, TX
- Average high temperature in May: 88.9°F
The warmest month (with the highest average high temperature) is August (97.9°F).
The month with the lowest average high temperature is January (65.5°F).
- Average low temperature in May: 70.3°F
The month with the highest average low temperature is August (77.2°F).
The coldest month (with the lowest average low temperature) is January (48.7°F).
Average pressure in May
San Diego, TX
- Average pressure in May: 29.87"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are May and June (29.87"Hg).
Average wind speed in May
San Diego, TX
- Average wind speed in May: 11.2mph
The windiest month (with the highest average wind speed) is May (11.2mph).
The calmest month (with the lowest average wind speed) is September (8.2mph).
Average humidity in May
San Diego, TX
- Average humidity in May: 72%
The month with the highest relative humidity is May (72%).
The month with the lowest relative humidity is August (62%).
Average rainfall in May
San Diego, TX
- Average rainfall in May: 1.93"
The wettest month (with the highest rainfall) is September (2.52").
The driest month (with the least rainfall) is February (0.59").
Average rainfall days in May
San Diego, TX
- Average rainfall days in May: 12.5 days
The month with the highest number of rainy days is September (17.1 days).
The month with the least rainy days is January (7 days).
Average snowfall in May
San Diego, TX
- Average snowfall in May: 0"
The months with the highest snowfall are January, February and December (0.04").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days in May
San Diego, TX
- Average snowfall days in May: 0 days
The months with the highest number of snowfall days are January and February (0.2 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight in May /
Average sunshine in May
San Diego, TX
- Average daylight in May: 13h and 3min
The month with the longest days is June (Average daylight: 13h and 54min).
The month with the shortest days is December (Average daylight: 10h and 24min).
- Average sunshine in May: 9h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in May
San Diego, TX
- Average sunshine days in May: 15.8 days
The month with the most sunshine days is January (21.8 days).
The month with the least sunshine days is September (11.2 days).
Average UV index in May
San Diego, TX
- Average UV index in May: 7
The month with the highest UV index is July (UV index 8).
The months with the lowest UV index are January and December (UV index 4).
Average cloud cover in May
San Diego, TX
- Average cloud cover in May: 39
The months with the most cloud cover are February and December (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 19).
Average visibility in May
San Diego, TX
- 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).
San Diego, Texas, USA
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