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Monthly climate in Portao, Brazil

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Portao features a humid subtropical climate (Cfa). Temperatures typically range between 14 °C (58 °F) and 25 °C (78 °F) through the year, but rarely can drop to 0 °C (33 °F) or can rise to as high as 38 °C (101 °F). The average annual precipitation amounts to about 1473 mm (58.0 inches) and receives 127 rainy days on the 1 mm (0.04 inches) threshold annually. Portao enjoys an average of 3214 hours of sunshine throughout the year, and daylight varies from 10 hours 15 minutes to 14 hours 0 minutes per day.

Monthly average temperatures in Portao, Brazil

The warmest months in Portao are January, February and December, with daily mean temperatures ranging from 24 to 25 °C (75 - 78 °F) throughout the day. The coldest temperatures usually occur in June, July and August, when daily mean temperatures range from 14 to 16 °C (58 - 60 °F) throughout the day. On average each year, Portao experiences 179 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 Portao. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum38°C
(101°F)		36°C
(97°F)		37°C
(99°F)		34°C
(93°F)		32°C
(89°F)		31°C
(88°F)		30°C
(87°F)		34°C
(94°F)		36°C
(97°F)		38°C
(100°F)		37°C
(98°F)		38°C
(100°F)
Mean maximum36°C
(98°F)		35°C
(95°F)		35°C
(95°F)		33°C
(91°F)		29°C
(85°F)		27°C
(80°F)		29°C
(85°F)		32°C
(90°F)		32°C
(90°F)		33°C
(92°F)		35°C
(95°F)		36°C
(97°F)
Average high30°C
(87°F)		30°C
(86°F)		28°C
(83°F)		26°C
(78°F)		21°C
(71°F)		20°C
(69°F)		19°C
(67°F)		21°C
(71°F)		23°C
(73°F)		25°C
(77°F)		27°C
(80°F)		29°C
(85°F)
Daily mean25°C
(78°F)		24°C
(76°F)		23°C
(73°F)		21°C
(69°F)		17°C
(63°F)		15°C
(60°F)		14°C
(58°F)		16°C
(60°F)		18°C
(65°F)		20°C
(68°F)		21°C
(71°F)		24°C
(75°F)
Average low21°C
(70°F)		20°C
(67°F)		19°C
(66°F)		17°C
(62°F)		13°C
(56°F)		12°C
(53°F)		10°C
(50°F)		11°C
(52°F)		14°C
(58°F)		15°C
(60°F)		16°C
(62°F)		19°C
(66°F)
Mean minimum16°C
(61°F)		15°C
(59°F)		13°C
(56°F)		10°C
(50°F)		7°C
(45°F)		4°C
(39°F)		1°C
(35°F)		3°C
(37°F)		8°C
(47°F)		9°C
(49°F)		11°C
(52°F)		13°C
(55°F)
Minimum13°C
(56°F)		13°C
(56°F)		12°C
(54°F)		7°C
(45°F)		3°C
(38°F)		1°C
(34°F)		0°C
(33°F)		2°C
(35°F)		5°C
(41°F)		8°C
(47°F)		10°C
(49°F)		11°C
(51°F)

Compare climate in Portao with other places

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

Monthly average precipitation in Portao, Brazil

Portao usually has the most precipitation in May, September and October, with an average of 12 rainy days and 164 mm (6.4 inches) of precipitation per month. The driest months in Portao are April, August and December. On average, 83 mm (3.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Portao. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)123 (4.8)116 (4.6)115 (4.5)79 (3.1)160 (6.3)123 (4.8)128 (5.0)78 (3.1)173 (6.8)158 (6.2)129 (5.1)91 (3.6)
Average precipitation days (≥ 1 mm)13111191110981213119

Monthly sunshine hours in Portao, Brazil

The sunniest months in Portao are February, November and December, when the sun shines an average of 10 hours 47 minutes a day. Least sunny months in Portao: May, June and September receive an average of 7 hours 15 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Portao. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours258304302264222212233255226267309357
Mean daily daylight hours13h 47m13h 5m12h 13m11h 19m10h 36m10h 15m10h 26m11h 4m11h 55m12h 48m13h 36m14h 0m

Solar UV radiation in Portao, Brazil

Portao 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 / High exposure category. In these months, the maximum values of the UV index do not exceed 6. For more detailed information, check out our hourly Portao UV Index data.

Average daily maximum UV levels by month for Portao. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)1413121065579121314