Last updated: March 2, 2024
Under the Köppen–Geiger climate classification San Juan Capistrano features a cold semi-arid climate (BSk). Temperatures typically range between 14 °C (58 °F) and 23 °C (74 °F) through the year, but rarely can drop to -3 °C (28 °F) or can rise to as high as 38 °C (100 °F). The average annual precipitation amounts to about 451 mm (17.8 inches) and receives 83 rainy days on the 1 mm (0.04 inches) threshold annually. San Juan Capistrano enjoys an average of 3564 hours of sunshine throughout the year, and daylight varies from 10 hours 45 minutes to 13 hours 29 minutes per day.
The warmest months in San Juan Capistrano are May, June and August, with daily mean temperatures ranging from 22 to 23 °C (72 - 74 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 14 to 16 °C (58 - 61 °F) throughout the day. On average each year, San Juan Capistrano experiences 238 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 | 27°C (81°F) |
30°C (87°F) |
33°C (92°F) |
34°C (94°F) |
36°C (97°F) |
38°C (100°F) |
34°C (93°F) |
32°C (90°F) |
32°C (89°F) |
32°C (89°F) |
31°C (88°F) |
28°C (83°F) |
| Mean maximum | 26°C (78°F) |
29°C (84°F) |
31°C (88°F) |
32°C (90°F) |
34°C (94°F) |
35°C (96°F) |
32°C (89°F) |
31°C (88°F) |
30°C (87°F) |
31°C (88°F) |
29°C (84°F) |
26°C (80°F) |
| Average high | 22°C (71°F) |
24°C (75°F) |
27°C (82°F) |
29°C (85°F) |
31°C (88°F) |
30°C (87°F) |
28°C (83°F) |
29°C (84°F) |
27°C (81°F) |
27°C (81°F) |
25°C (78°F) |
22°C (72°F) |
| Daily mean | 14°C (58°F) |
16°C (61°F) |
19°C (66°F) |
20°C (69°F) |
23°C (73°F) |
23°C (74°F) |
21°C (71°F) |
22°C (72°F) |
21°C (70°F) |
20°C (69°F) |
17°C (64°F) |
15°C (58°F) |
| Average low | 7°C (44°F) |
8°C (47°F) |
10°C (50°F) |
11°C (53°F) |
14°C (57°F) |
17°C (63°F) |
16°C (62°F) |
16°C (62°F) |
16°C (61°F) |
14°C (57°F) |
10°C (50°F) |
7°C (45°F) |
| Mean minimum | 3°C (37°F) |
3°C (38°F) |
7°C (44°F) |
8°C (46°F) |
10°C (50°F) |
14°C (58°F) |
14°C (58°F) |
14°C (58°F) |
14°C (57°F) |
9°C (48°F) |
5°C (41°F) |
2°C (35°F) |
| Minimum | -1°C (31°F) |
-0°C (32°F) |
5°C (42°F) |
5°C (42°F) |
8°C (46°F) |
12°C (55°F) |
13°C (56°F) |
13°C (56°F) |
12°C (55°F) |
8°C (47°F) |
2°C (36°F) |
-3°C (28°F) |
Compare temperature, precipitation, sunshine, UV index in San Juan Capistrano, Zacatecas, Mexico with other places around the world.
San Juan Capistrano usually has the most precipitation in July, August and September, with an average of 18 rainy days and 97 mm (3.8 inches) of precipitation per month. The driest months in San Juan Capistrano are March, April and May. On average, 5 mm (0.2 inches) of precipitation falls during these months.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average precipitation mm (inches) | 16 (0.6) | 16 (0.6) | 4 (0.2) | 1 (0.0) | 9 (0.4) | 45 (1.8) | 128 (5.0) | 81 (3.2) | 81 (3.2) | 44 (1.7) | 14 (0.6) | 12 (0.5) |
| Average precipitation days (≥ 1 mm) | 2 | 2 | 0 | 0 | 2 | 11 | 23 | 18 | 15 | 7 | 1 | 2 |
The sunniest months in San Juan Capistrano are March, April and May, when the sun shines an average of 10 hours 56 minutes a day. Least sunny months in San Juan Capistrano: January, February and September receive an average of 8 hours 35 minutes of sunshine daily.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean monthly sunshine hours | 229 | 265 | 322 | 331 | 352 | 314 | 302 | 314 | 277 | 288 | 284 | 280 |
| Mean daily daylight hours | 10h 54m | 11h 23m | 12h 1m | 12h 40m | 13h 13m | 13h 29m | 13h 20m | 12h 51m | 12h 14m | 11h 35m | 11h 2m | 10h 45m |
San Juan Capistrano experiences the highest level of ultraviolet (UV) radiation in April, May and August, 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 exposure category. In these months, the maximum values of the UV index do not exceed 9. For more detailed information, check out our hourly San Juan Capistrano UV Index data.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV Index (month maximum) | 8 | 11 | 13 | 15 | 14 | 14 | 14 | 14 | 13 | 12 | 9 | 8 |
Discover in-depth weather details for every month in San Juan Capistrano. Click through the links below for comprehensive overviews of temperature trends, precipitation levels, sunshine hours, and solar UV radiation specifics. Whether planning a visit or simply curious about San Juan Capistrano's climate nuances, these monthly breakdowns provide the information you need for an informed understanding of what to expect throughout the year.
Each link leads to a detailed account of the typical weather conditions for that month, providing both locals and tourists with vital information to plan their daily activities, wardrobe, and travel itineraries accordingly.