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 sea temperature 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
In San Diego, the average high-temperature in May is practically the same as in April - a still comfortable 67.6°F (19.8°C). In May, in San Diego, California, the average low-temperature is 56.3°F (13.5°C).Humidity
In May, the average relative humidity is 72%.Rainfall
In May, in San Diego, California, the rain falls for 5.7 days. Throughout May, 0.39" (10mm) of precipitation is accumulated. In San Diego, during the entire year, the rain falls for 61.8 days and collects up to 8.7" (221mm) of precipitation.Ocean temperature
In May, the average ocean temperature is 62.6°F (17°C).Note: For swimming, a surface water temperature of 62.6°F (17°C) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 69.8°F (21°C).
Daylight
The average length of the day in May is 13h and 52min.On the first day of the month, sunrise is at 6:01 am and sunset at 7:30 pm. On the last day of May, in San Diego, sunrise is at 5:41 am and sunset at 7:50 pm PDT.
Sunshine
In San Diego, the average sunshine in May is 10.9h.UV index
In May, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: In May, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
FAQ
What is the temperature in May in San Diego?
What is the average humidity in May in San Diego?
How much does it rain in San Diego in May?
What is the ocean temperature in May in San Diego?
How many hours of daylight does San Diego have in May?
What time are sunrise and sunset in May in San Diego?
How many hours of sunshine does San Diego have in May?
How high is the UV index in May in San Diego?
Average temperature in May
San Diego, CA
- Average high temperature in May: 67.6°F
The warmest month (with the highest average high temperature) is August (77.4°F).
The month with the lowest average high temperature is February (63.1°F).
- Average low temperature in May: 56.3°F
The month with the highest average low temperature is August (65.7°F).
The coldest month (with the lowest average low temperature) is February (51.8°F).
Average pressure in May
San Diego, 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
San Diego, CA
- Average wind speed in May: 6.3mph
The windiest months (with the highest average wind speed) are April and May (6.3mph).
The calmest month (with the lowest average wind speed) is October (5.2mph).
Average humidity in May
San Diego, CA
- Average humidity in May: 72%
The month with the highest relative humidity is June (73%).
The month with the lowest relative humidity is November (59%).
Average rainfall in May
San Diego, CA
- Average rainfall in May: 0.39"
The wettest month (with the highest rainfall) is December (1.65").
The driest month (with the least rainfall) is June (0.12").
Average rainfall days in May
San Diego, CA
- Average rainfall days in May: 5.7 days
The month with the highest number of rainy days is March (7.6 days).
The month with the least rainy days is June (2.7 days).
Average sea temperature in May
San Diego, 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
San Diego, CA
- Average daylight in May: 13h and 52min
The month with the longest days is June (Average daylight: 14h and 16min).
The month with the shortest days is December (Average daylight: 10h and 2min).
- Average sunshine in May: 10h and 54min
The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in May
San Diego, CA
- Average sunshine days in May: 21.1 days
The month with the most sunshine days is January (24.3 days).
The month with the least sunshine days is July (20.3 days).
Average UV index in May
San Diego, CA
- Average UV index in May: 5
The months with the highest UV index are 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
San Diego, CA
- Average cloud cover in May: 22
The month with the most cloud cover is December (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 9).
Average visibility in May
San Diego, 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).
Weather forecast for your location
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