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Monthly climate in Tres Rios, Rio de Janeiro, Brazil

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Tres Rios features a humid subtropical climate (Cfa). Temperatures typically range between 18 °C (64 °F) and 25 °C (77 °F) through the year, but rarely can drop to 5 °C (41 °F) or can rise to as high as 35 °C (96 °F). The average annual precipitation amounts to about 1181 mm (46.5 inches) and receives 137 rainy days on the 1 mm (0.04 inches) threshold annually. Tres Rios enjoys an average of 3325 hours of sunshine throughout the year, and daylight varies from 10 hours 47 minutes to 13 hours 26 minutes per day.

Monthly average temperatures in Tres Rios, Rio de Janeiro, Brazil §

The warmest months in Tres Rios are January, February and March, with daily mean temperatures ranging from 24 to 25 °C (75 - 77 °F) throughout the day. The coldest temperatures usually occur in June, July and August, when daily mean temperatures range from 18 to 19 °C (64 - 67 °F) throughout the day. On average each year, Tres Rios experiences 230 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 Tres Rios, Rio de Janeiro, Brazil. 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 34°C
(94°F)		 34°C
(94°F)		 34°C
(93°F)		 33°C
(92°F)		 31°C
(88°F)		 30°C
(86°F)		 30°C
(86°F)		 32°C
(90°F)		 35°C
(96°F)		 35°C
(96°F)		 35°C
(95°F)		 35°C
(95°F)
Mean maximum 33°C
(92°F)		 33°C
(91°F)		 33°C
(91°F)		 31°C
(89°F)		 30°C
(86°F)		 29°C
(84°F)		 29°C
(84°F)		 30°C
(87°F)		 33°C
(92°F)		 33°C
(92°F)		 33°C
(91°F)		 33°C
(91°F)
Average high 30°C
(86°F)		 29°C
(84°F)		 29°C
(85°F)		 27°C
(81°F)		 25°C
(78°F)		 25°C
(77°F)		 24°C
(76°F)		 24°C
(75°F)		 27°C
(82°F)		 27°C
(81°F)		 27°C
(80°F)		 28°C
(83°F)
Daily mean 25°C
(77°F)		 24°C
(75°F)		 24°C
(75°F)		 22°C
(72°F)		 20°C
(68°F)		 19°C
(67°F)		 18°C
(64°F)		 18°C
(66°F)		 22°C
(71°F)		 22°C
(72°F)		 22°C
(72°F)		 23°C
(74°F)
Average low 21°C
(69°F)		 20°C
(69°F)		 20°C
(68°F)		 18°C
(64°F)		 15°C
(60°F)		 15°C
(59°F)		 13°C
(55°F)		 14°C
(57°F)		 17°C
(63°F)		 18°C
(65°F)		 18°C
(65°F)		 20°C
(68°F)
Mean minimum 18°C
(65°F)		 18°C
(64°F)		 16°C
(62°F)		 14°C
(57°F)		 10°C
(50°F)		 11°C
(53°F)		 9°C
(48°F)		 9°C
(49°F)		 12°C
(54°F)		 14°C
(58°F)		 14°C
(58°F)		 16°C
(62°F)
Minimum 17°C
(63°F)		 17°C
(63°F)		 14°C
(57°F)		 12°C
(53°F)		 7°C
(45°F)		 10°C
(50°F)		 5°C
(42°F)		 5°C
(41°F)		 10°C
(50°F)		 12°C
(53°F)		 12°C
(53°F)		 13°C
(55°F)

Compare climate in Tres Rios with other places

Compare temperature, precipitation, sunshine, UV index in Tres Rios, Rio de Janeiro, Brazil with other places around the world.

Monthly average precipitation in Tres Rios, Rio de Janeiro, Brazil §

Tres Rios usually has the most precipitation in February, November and December, with an average of 19 rainy days and 205 mm (8.1 inches) of precipitation per month. The driest months in Tres Rios are May, June and July. On average, 22 mm (0.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Tres Rios, Rio de Janeiro, Brazil. 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) 120 (4.7) 211 (8.3) 143 (5.6) 48 (1.9) 36 (1.4) 19 (0.7) 11 (0.4) 37 (1.4) 45 (1.8) 107 (4.2) 203 (8.0) 202 (7.9)
Average precipitation days (≥ 1 mm) 14 19 16 9 6 3 2 6 6 16 19 21

Monthly sunshine hours in Tres Rios, Rio de Janeiro, Brazil §

The sunniest months in Tres Rios are March, July and September, when the sun shines an average of 9 hours 42 minutes a day. Least sunny months in Tres Rios: February, October and November receive an average of 8 hours 39 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Tres Rios, Rio de Janeiro, Brazil. 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 263 260 306 284 277 272 290 268 295 258 258 287
Mean daily daylight hours 13h 17m 12h 48m 12h 10m 11h 32m 11h 2m 10h 47m 10h 55m 11h 22m 11h 58m 12h 36m 13h 9m 13h 26m

Solar UV radiation in Tres Rios, Rio de Janeiro, Brazil §

Tres Rios experiences the highest level of ultraviolet (UV) radiation in January, February and December, when the maximum UV index can reach values of 15 - 16, which corresponds to the Extreme category of sun exposure. May, June and July are in the High / Very High exposure category. In these months, the maximum values of the UV index do not exceed 8. For more detailed information, check out our hourly Tres Rios UV Index data.

Average daily maximum UV levels by month for Tres Rios, Rio de Janeiro, Brazil. 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) 16 15 13 11 8 6 8 10 12 13 14 15

Detailed Monthly Weather Insights for Tres Rios, Rio de Janeiro, Brazil

Discover in-depth weather details for every month in Tres Rios. 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 Tres Rios'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.