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Monthly climate in Rosario, Colonia, Uruguay

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Rosario features a humid subtropical climate (Cfa).Temperatures typically range between 11 °C (52 °F) and 24 °C (76 °F) through the year, but rarely can drop to -1 °C (31 °F) or can rise to as high as 41 °C (107 °F).The average annual precipitation amounts to about 991 mm (39.0 inches) and receives 86 rainy days on the 1 mm (0.04 inches) threshold annually.Rosario enjoys an average of 3354 hours of sunshine throughout the year, and daylight varies from 9 hours 52 minutes to 14 hours 23 minutes per day.

Monthly average temperatures in Rosario, Colonia, Uruguay §

The warmest months in Rosario are January, February and December, with daily mean temperatures ranging from 23 to 24 °C (73 - 76 °F) throughout the day. The coldest temperatures usually occur in June, July and August, when daily mean temperatures range from 11 to 12 °C (52 - 54 °F) throughout the day. On average each year, Rosario experiences 117 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Rosario, Colonia, Uruguay.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 41°C
(107°F)		 37°C
(98°F)		 34°C
(93°F)		 33°C
(92°F)		 27°C
(82°F)		 26°C
(80°F)		 26°C
(80°F)		 26°C
(80°F)		 29°C
(85°F)		 35°C
(95°F)		 35°C
(96°F)		 37°C
(99°F)
Mean maximum 36°C
(97°F)		 34°C
(94°F)		 32°C
(91°F)		 29°C
(85°F)		 26°C
(79°F)		 21°C
(71°F)		 25°C
(77°F)		 25°C
(78°F)		 28°C
(82°F)		 30°C
(87°F)		 35°C
(95°F)		 35°C
(95°F)
Average high 29°C
(85°F)		 28°C
(82°F)		 26°C
(79°F)		 23°C
(74°F)		 19°C
(66°F)		 16°C
(62°F)		 15°C
(59°F)		 17°C
(63°F)		 19°C
(66°F)		 21°C
(71°F)		 25°C
(78°F)		 28°C
(83°F)
Daily mean 24°C
(76°F)		 23°C
(73°F)		 21°C
(70°F)		 18°C
(65°F)		 14°C
(58°F)		 12°C
(54°F)		 11°C
(52°F)		 12°C
(54°F)		 14°C
(58°F)		 17°C
(62°F)		 20°C
(69°F)		 23°C
(73°F)
Average low 19°C
(67°F)		 18°C
(65°F)		 16°C
(61°F)		 14°C
(58°F)		 10°C
(51°F)		 8°C
(47°F)		 7°C
(45°F)		 8°C
(46°F)		 10°C
(50°F)		 12°C
(53°F)		 14°C
(58°F)		 17°C
(62°F)
Mean minimum 13°C
(55°F)		 12°C
(53°F)		 10°C
(50°F)		 8°C
(46°F)		 5°C
(41°F)		 1°C
(35°F)		 1°C
(34°F)		 1°C
(34°F)		 4°C
(40°F)		 5°C
(42°F)		 8°C
(47°F)		 10°C
(50°F)
Minimum 12°C
(54°F)		 10°C
(51°F)		 8°C
(47°F)		 6°C
(43°F)		 3°C
(38°F)		 -1°C
(31°F)		 -0°C
(32°F)		 -0°C
(32°F)		 3°C
(38°F)		 5°C
(41°F)		 6°C
(43°F)		 7°C
(46°F)

Compare climate in Rosario with other places

Compare temperature, precipitation, sunshine, UV index in Rosario, Colonia, Uruguay with other places around the world.

Monthly average precipitation in Rosario, Colonia, Uruguay §

Rosario usually has the most precipitation in February, March and October, with an average of 8 rainy days and 99 mm (3.9 inches) of precipitation per month.The driest months in Rosario are April, November and December. On average, 70 mm (2.7 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Rosario, Colonia, Uruguay.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 85 (3.4) 110 (4.3) 95 (3.7) 70 (2.8) 89 (3.5) 75 (3.0) 86 (3.4) 75 (3.0) 76 (3.0) 91 (3.6) 67 (2.6) 72 (2.8)
Average precipitation days (≥ 1 mm) 6 8 7 6 7 8 9 6 7 9 7 6

Monthly sunshine hours in Rosario, Colonia, Uruguay §

The sunniest months in Rosario are February, November and December, when the sun shines an average of 11 hours 28 minutes a day.Least sunny months in Rosario: May, June and July receive an average of 6 hours 59 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Rosario, Colonia, Uruguay.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 300 312 311 260 225 210 207 252 252 300 338 382
Mean daily daylight hours 14h 7m 13h 17m 12h 14m 11h 10m 10h 18m 9h 52m 10h 6m 10h 52m 11h 53m 12h 57m 13h 54m 14h 23m

Solar UV radiation in Rosario, Colonia, Uruguay §

Rosario experiences the highest level of ultraviolet (UV) radiation in January, November and December, when the maximum UV index can reach values of 13 - 14, which corresponds to the Extreme category of sun exposure.May, June and July are in the Moderate exposure category. In these months, the maximum values of the UV index do not exceed 5. For more detailed information, check out our hourly Rosario UV Index data.

Average daily maximum UV levels by month for Rosario, Colonia, Uruguay.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 14 13 11 7 5 4 4 6 8 10 13 14