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Monthly climate in Mariana, Brazil

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Mariana features a subtropical climate (Cwb). Temperatures typically range between 16 °C (61 °F) and 22 °C (72 °F) through the year, but rarely can drop to 4 °C (40 °F) or can rise to as high as 34 °C (93 °F). The average annual precipitation amounts to about 1633 mm (64.3 inches) and receives 151 rainy days on the 1 mm (0.04 inches) threshold annually. Mariana enjoys an average of 3458 hours of sunshine throughout the year, and daylight varies from 10 hours 54 minutes to 13 hours 19 minutes per day.

Monthly average temperatures in Mariana, Brazil

The warmest months in Mariana are January, February and March, with daily mean temperatures ranging from 22 to 22 °C (71 - 72 °F) throughout the day. The coldest temperatures usually occur in June, July and August, when daily mean temperatures range from 16 to 17 °C (61 - 63 °F) throughout the day. On average each year, Mariana experiences 172 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 Mariana. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum31°C
(88°F)		32°C
(90°F)		31°C
(87°F)		30°C
(86°F)		28°C
(82°F)		28°C
(82°F)		28°C
(82°F)		28°C
(83°F)		33°C
(92°F)		34°C
(93°F)		31°C
(88°F)		31°C
(87°F)
Mean maximum30°C
(87°F)		30°C
(86°F)		30°C
(85°F)		28°C
(84°F)		27°C
(81°F)		27°C
(80°F)		26°C
(80°F)		27°C
(81°F)		31°C
(88°F)		31°C
(88°F)		30°C
(86°F)		30°C
(86°F)
Average high27°C
(81°F)		26°C
(79°F)		27°C
(80°F)		25°C
(77°F)		23°C
(74°F)		23°C
(73°F)		22°C
(72°F)		23°C
(73°F)		26°C
(79°F)		26°C
(78°F)		25°C
(77°F)		26°C
(79°F)
Daily mean22°C
(72°F)		22°C
(71°F)		22°C
(71°F)		20°C
(68°F)		18°C
(64°F)		17°C
(63°F)		16°C
(61°F)		17°C
(62°F)		20°C
(68°F)		21°C
(69°F)		20°C
(69°F)		21°C
(71°F)
Average low18°C
(65°F)		18°C
(65°F)		18°C
(64°F)		16°C
(61°F)		13°C
(56°F)		13°C
(55°F)		11°C
(52°F)		12°C
(54°F)		15°C
(59°F)		17°C
(63°F)		17°C
(63°F)		18°C
(65°F)
Mean minimum17°C
(62°F)		16°C
(62°F)		14°C
(58°F)		12°C
(54°F)		8°C
(47°F)		9°C
(49°F)		7°C
(45°F)		8°C
(46°F)		10°C
(51°F)		13°C
(57°F)		13°C
(56°F)		15°C
(59°F)
Minimum16°C
(61°F)		16°C
(61°F)		13°C
(56°F)		11°C
(51°F)		4°C
(40°F)		8°C
(46°F)		5°C
(41°F)		6°C
(43°F)		9°C
(48°F)		12°C
(54°F)		10°C
(51°F)		12°C
(55°F)

Compare climate in Mariana with other places

Compare temperature, precipitation, sunshine, UV index in Mariana, Brazil with other places around the world.

Monthly average precipitation in Mariana, Brazil

Mariana usually has the most precipitation in February, November and December, with an average of 21 rainy days and 271 mm (10.7 inches) of precipitation per month. The driest months in Mariana are June, July and August. On average, 19 mm (0.7 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Mariana. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)193 (7.6)281 (11.1)190 (7.5)80 (3.1)53 (2.1)15 (0.6)7 (0.3)35 (1.4)55 (2.1)192 (7.6)256 (10.1)277 (10.9)
Average precipitation days (≥ 1 mm)1320161374157202223

Monthly sunshine hours in Mariana, Brazil

The sunniest months in Mariana are March, July and September, when the sun shines an average of 10 hours 6 minutes a day. Least sunny months in Mariana: January, February and November receive an average of 8 hours 49 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Mariana. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours274263312292290283306293310281255293
Mean daily daylight hours13h 11m12h 44m12h 10m11h 35m11h 7m10h 54m11h 1m11h 26m11h 58m12h 33m13h 4m13h 19m

Solar UV radiation in Mariana, Brazil

Mariana experiences the highest level of ultraviolet (UV) radiation in January, February and December, when the maximum UV index can reach values of 15 - 17, 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 9. For more detailed information, check out our hourly Mariana UV Index data.

Average daily maximum UV levels by month for Mariana. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)171514129781112141416