Last updated: July 31, 2025
Under the Köppen–Geiger climate classification Santa Ana features a humid subtropical climate (Cfa). Temperatures typically range between 13 °C (55 °F) and 26 °C (79 °F) through the year, but rarely can drop to -1 °C (30 °F) or can rise to as high as 41 °C (106 °F). The average annual precipitation amounts to about 1233 mm (48.5 inches) and receives 85 rainy days on the 1 mm (0.04 inches) threshold annually. Santa Ana enjoys an average of 3393 hours of sunshine throughout the year, and daylight varies from 10 hours 9 minutes to 14 hours 6 minutes per day.
The warmest months in Santa Ana are January, February and December, with daily mean temperatures ranging from 25 to 26 °C (77 - 79 °F) throughout the day. The coldest temperatures usually occur in June, July and August, when daily mean temperatures range from 13 to 14 °C (55 - 58 °F) throughout the day. On average each year, Santa Ana experiences 173 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 | 41°C (106°F) | 39°C (102°F) | 38°C (100°F) | 35°C (96°F) | 29°C (85°F) | 28°C (82°F) | 30°C (86°F) | 32°C (91°F) | 34°C (93°F) | 37°C (98°F) | 39°C (103°F) | 39°C (102°F) |
| Mean maximum | 37°C (98°F) | 36°C (96°F) | 34°C (94°F) | 32°C (90°F) | 27°C (82°F) | 24°C (75°F) | 28°C (82°F) | 30°C (87°F) | 32°C (89°F) | 34°C (93°F) | 37°C (99°F) | 36°C (98°F) |
| Average high | 31°C (88°F) | 30°C (87°F) | 28°C (83°F) | 26°C (78°F) | 21°C (69°F) | 18°C (65°F) | 18°C (64°F) | 20°C (68°F) | 22°C (72°F) | 25°C (77°F) | 28°C (83°F) | 30°C (87°F) |
| Daily mean | 26°C (79°F) | 25°C (77°F) | 23°C (73°F) | 20°C (69°F) | 16°C (61°F) | 13°C (56°F) | 13°C (55°F) | 14°C (58°F) | 17°C (63°F) | 19°C (67°F) | 23°C (73°F) | 25°C (77°F) |
| Average low | 21°C (70°F) | 20°C (68°F) | 18°C (64°F) | 16°C (61°F) | 12°C (54°F) | 10°C (50°F) | 9°C (48°F) | 9°C (49°F) | 12°C (54°F) | 14°C (58°F) | 17°C (62°F) | 18°C (66°F) |
| Mean minimum | 15°C (60°F) | 13°C (56°F) | 12°C (54°F) | 9°C (48°F) | 6°C (43°F) | 2°C (36°F) | 1°C (33°F) | 1°C (35°F) | 6°C (42°F) | 8°C (47°F) | 12°C (54°F) | 13°C (55°F) |
| Minimum | 14°C (58°F) | 12°C (53°F) | 10°C (50°F) | 6°C (44°F) | 3°C (38°F) | 1°C (34°F) | -1°C (30°F) | -1°C (30°F) | 3°C (38°F) | 6°C (44°F) | 10°C (50°F) | 10°C (50°F) |
Compare temperature, precipitation, sunshine, UV index in Santa Ana, Argentina with other places around the world.
Santa Ana usually has the most precipitation in January, May and October, with an average of 8 rainy days and 127 mm (5.0 inches) of precipitation per month. The driest months in Santa Ana are July, November and December. On average, 74 mm (2.9 inches) of precipitation falls during these months.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average precipitation mm (inches) | 122 (4.8) | 109 (4.3) | 94 (3.7) | 100 (4.0) | 132 (5.2) | 110 (4.3) | 62 (2.4) | 95 (3.7) | 120 (4.7) | 127 (5.0) | 93 (3.7) | 68 (2.7) |
| Average precipitation days (≥ 1 mm) | 8 | 8 | 6 | 6 | 9 | 7 | 7 | 6 | 8 | 8 | 6 | 6 |
The sunniest months in Santa Ana are March, November and December, when the sun shines an average of 11 hours 13 minutes a day. Least sunny months in Santa Ana: May, June and July receive an average of 7 hours 12 minutes of sunshine daily.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean monthly sunshine hours | 275 | 312 | 314 | 277 | 227 | 214 | 221 | 275 | 258 | 297 | 337 | 380 |
| Mean daily daylight hours | 13h 52m | 13h 8m | 12h 13m | 11h 17m | 10h 31m | 10h 9m | 10h 21m | 11h 1m | 11h 54m | 12h 51m | 13h 41m | 14h 6m |
Santa Ana experiences the highest level of ultraviolet (UV) radiation in January, November and December, when the maximum UV index can reach values of 14 - 15, which corresponds to the Extreme category of sun exposure. May, June and July are in the Moderate / High exposure category. In these months, the maximum values of the UV index do not exceed 6. For more detailed information, check out our hourly Santa Ana UV Index data.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV Index (month maximum) | 15 | 13 | 12 | 9 | 6 | 4 | 5 | 6 | 9 | 12 | 14 | 14 |