Sonora weather in August
August is one of the least pleasant months in Sonora: highs of 37°C (98°F) and about 99 mm (3.9 in) of rain on average. Nights average 26°C (78°F) and cloud cover 51% (NASA POWER, 2001–2025 averages). It is the 2nd wettest month of the year and the 3rd warmest. Compared with July, it is cooler and about as wet; September brings highs of 36°C (97°F) and 80 mm (3.1 in) of rain.
Figures are long-term averages for Hermosillo, the largest city in Sonora. See below for other places.
Is August a good time to visit Sonora?
least pleasant month Weather score 51/100.
August is one of the least pleasant months for weather in Sonora. For better conditions, consider Oct–May.
Does it rain a lot in Sonora in August?
Some rain is normal: about 99 mm (3.9 in) falls in an average August. It is the 2nd wettest month of the year.
How warm is Sonora in August?
Days average 37°C (98°F) and nights 26°C (78°F).
Sonora weather by month
| Month | High | Low | Rain | Cloud | Weather |
|---|---|---|---|---|---|
| January | 24°C (74°F) | 9°C (47°F) | 16 mm | 32% | best |
| February | 25°C (77°F) | 9°C (49°F) | 13 mm | 36% | best |
| March | 29°C (84°F) | 12°C (53°F) | 9 mm | 30% | best |
| April | 32°C (89°F) | 14°C (58°F) | 2 mm | 26% | best |
| May | 35°C (96°F) | 18°C (64°F) | 1 mm | 17% | best |
| June | 40°C (103°F) | 23°C (74°F) | 12 mm | 24% | least pleasant |
| July | 37°C (99°F) | 26°C (79°F) | 110 mm | 59% | least pleasant |
| August | 37°C (98°F) | 26°C (78°F) | 99 mm | 51% | least pleasant |
| September | 36°C (97°F) | 23°C (74°F) | 80 mm | 33% | fair |
| October | 33°C (91°F) | 18°C (65°F) | 14 mm | 20% | best |
| November | 28°C (82°F) | 13°C (56°F) | 15 mm | 28% | best |
| December | 23°C (73°F) | 9°C (47°F) | 12 mm | 32% | best |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis). Page updated . How we rate months
Weather across Sonora in August
Weather can differ a lot within Sonora: coasts, hills and mountains each have their own climate.
| Place | High | Low | Rain | Weather |
|---|---|---|---|---|
| Hermosillo | 37°C (98°F) | 26°C (78°F) | 99 mm | least pleasant |
| Ciudad Obregón | 35°C (94°F) | 26°C (79°F) | 96 mm | least pleasant |
| Nogales | 33°C (92°F) | 21°C (69°F) | 76 mm | least pleasant |
| San Luis Río Colorado | 43°C (109°F) | 27°C (80°F) | 8 mm | least pleasant |
| Heroica Guaymas | 35°C (95°F) | 26°C (79°F) | 84 mm | least pleasant |
| Navojoa | 34°C (93°F) | 26°C (78°F) | 125 mm | least pleasant |
| Agua Prieta | 32°C (89°F) | 19°C (66°F) | 77 mm | least pleasant |
| Puerto Peñasco | 35°C (96°F) | 28°C (82°F) | 27 mm | least pleasant |
| Heroica Caborca | 37°C (98°F) | 24°C (75°F) | 79 mm | least pleasant |
| Empalme | 35°C (95°F) | 26°C (79°F) | 84 mm | least pleasant |
| Esperanza | 35°C (94°F) | 26°C (79°F) | 96 mm | least pleasant |
| Cananea | 31°C (88°F) | 18°C (65°F) | 102 mm | least pleasant |