Last updated: May 6, 2024
Under the Köppen–Geiger climate classification San Diego features a tropical monsoon climate (Am).Temperatures typically range between 26 °C (79 °F) and 29 °C (84 °F) through the year, but rarely can drop to 23 °C (73 °F) or can rise to as high as 33 °C (91 °F).The average annual precipitation amounts to about 2438 mm (96.0 inches) and receives 196 rainy days on the 1 mm (0.04 inches) threshold annually.San Diego enjoys an average of 3367 hours of sunshine throughout the year, and daylight varies from 11 hours 18 minutes to 12 hours 55 minutes per day.
The warmest months in San Diego are April, May and June, with daily mean temperatures ranging from 28 to 29 °C (83 - 84 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 26 to 27 °C (79 - 81 °F) throughout the day. On average each year, San Diego experiences 329 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Maximum | 29°C (85°F) | 30°C (87°F) | 31°C (89°F) | 32°C (91°F) | 33°C (91°F) | 32°C (91°F) | 32°C (89°F) | 31°C (89°F) | 31°C (88°F) | 31°C (89°F) | 31°C (88°F) | 30°C (87°F) |
Mean maximum | 29°C (85°F) | 30°C (85°F) | 31°C (88°F) | 32°C (89°F) | 32°C (90°F) | 31°C (88°F) | 31°C (87°F) | 30°C (87°F) | 31°C (87°F) | 31°C (88°F) | 31°C (87°F) | 30°C (86°F) |
Average high | 28°C (83°F) | 28°C (83°F) | 30°C (86°F) | 30°C (87°F) | 31°C (88°F) | 30°C (86°F) | 29°C (84°F) | 29°C (84°F) | 29°C (84°F) | 29°C (85°F) | 29°C (85°F) | 29°C (84°F) |
Daily mean | 26°C (79°F) | 26°C (79°F) | 27°C (81°F) | 28°C (83°F) | 29°C (84°F) | 28°C (83°F) | 27°C (82°F) | 27°C (82°F) | 27°C (82°F) | 28°C (82°F) | 28°C (82°F) | 27°C (81°F) |
Average low | 25°C (77°F) | 24°C (76°F) | 25°C (78°F) | 26°C (79°F) | 27°C (81°F) | 27°C (80°F) | 26°C (80°F) | 26°C (80°F) | 26°C (79°F) | 26°C (79°F) | 26°C (79°F) | 26°C (78°F) |
Mean minimum | 23°C (74°F) | 23°C (74°F) | 24°C (75°F) | 25°C (77°F) | 26°C (79°F) | 26°C (79°F) | 25°C (78°F) | 25°C (78°F) | 25°C (78°F) | 25°C (78°F) | 25°C (78°F) | 24°C (76°F) |
Minimum | 23°C (74°F) | 23°C (73°F) | 23°C (74°F) | 24°C (76°F) | 26°C (79°F) | 25°C (78°F) | 25°C (78°F) | 25°C (78°F) | 25°C (77°F) | 25°C (77°F) | 25°C (77°F) | 24°C (75°F) |
Compare temperature, precipitation, sunshine, UV index in San Diego, Calabarzon, Philippines with other places around the world.
San Diego usually has the most precipitation in July, August and September, with an average of 28 rainy days and 449 mm (17.7 inches) of precipitation per month.The driest months in San Diego are February, March and April. On average, 25 mm (1.0 inches) of precipitation falls during these months.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Average precipitation mm (inches) | 46 (1.8) | 26 (1.0) | 23 (0.9) | 26 (1.0) | 118 (4.6) | 310 (12.2) | 549 (21.6) | 404 (15.9) | 395 (15.6) | 257 (10.1) | 141 (5.6) | 142 (5.6) |
Average precipitation days (≥ 1 mm) | 6 | 4 | 5 | 6 | 19 | 25 | 30 | 28 | 26 | 23 | 12 | 12 |
The sunniest months in San Diego are March, April and May, when the sun shines an average of 10 hours 23 minutes a day.Least sunny months in San Diego: January, August and September receive an average of 8 hours 9 minutes of sunshine daily.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Mean monthly sunshine hours | 237 | 276 | 316 | 314 | 325 | 294 | 263 | 258 | 254 | 270 | 274 | 282 |
Mean daily daylight hours | 11h 23m | 11h 40m | 12h 2m | 12h 26m | 12h 45m | 12h 55m | 12h 50m | 12h 33m | 12h 11m | 11h 48m | 11h 28m | 11h 18m |
San Diego experiences the highest level of ultraviolet (UV) radiation in March, April and September, when the maximum UV index can reach values of 14 - 15, which corresponds to the Extreme category of sun exposure.January, November and December are in the Very High / Extreme exposure category. In these months, the maximum values of the UV index do not exceed 11. For more detailed information, check out our hourly San Diego UV Index data.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
UV Index (month maximum) | 11 | 13 | 15 | 14 | 13 | 14 | 14 | 14 | 14 | 13 | 11 | 10 |