Climate almanac
Rosario
Colonia, Uruguay · -34.32°, -57.35°
What is the climate like in Rosario?
The best time to visit Rosario is typically September – April, with trip comfort peaking in November (7.6/10). Rosario is warmest in January, when daily highs average 86°F (30°C), and coolest in July, when lows fall to about 45°F (7°C). The wettest month is typically March and the driest is June; the year sees roughly 38 in (975 mm) of precipitation.
- Best time to visitSeptember – April — comfort peaks in November (7.6/10)
- Warmest monthJanuary — average high 86°F (30°C)
- Coolest monthJuly — average low 45°F (7°C)
- Wettest monthMarch (4.6 in (117 mm))
- Driest monthJune (2.0 in (50 mm))
- Annual precipitation38 in (975 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
- Records fromLaguna De Los Patos Intl, 42 km away (1957-2025)