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Monthly climate in Porto Belo, Brazil

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Porto Belo features a humid subtropical climate (Cfa). Temperatures typically range between 17 °C (62 °F) and 25 °C (78 °F) through the year, but rarely can drop to 6 °C (43 °F) or can rise to as high as 35 °C (96 °F). The average annual precipitation amounts to about 1309 mm (51.6 inches) and receives 168 rainy days on the 1 mm (0.04 inches) threshold annually. Porto Belo enjoys an average of 3315 hours of sunshine throughout the year, and daylight varies from 10 hours 26 minutes to 13 hours 48 minutes per day.

Monthly average temperatures in Porto Belo, Brazil

The warmest months in Porto Belo are January, February and March, with daily mean temperatures ranging from 24 to 25 °C (76 - 78 °F) throughout the day. The coldest temperatures usually occur in June, July and August, when daily mean temperatures range from 17 to 18 °C (62 - 65 °F) throughout the day. On average each year, Porto Belo experiences 141 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 Porto Belo. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum35°C
(96°F)		35°C
(95°F)		32°C
(91°F)		30°C
(87°F)		30°C
(86°F)		28°C
(83°F)		27°C
(81°F)		27°C
(80°F)		27°C
(81°F)		31°C
(89°F)		31°C
(88°F)		33°C
(92°F)
Mean maximum32°C
(90°F)		32°C
(89°F)		31°C
(89°F)		29°C
(85°F)		27°C
(81°F)		24°C
(76°F)		26°C
(79°F)		25°C
(77°F)		26°C
(79°F)		29°C
(84°F)		29°C
(85°F)		31°C
(88°F)
Average high28°C
(83°F)		28°C
(83°F)		27°C
(81°F)		25°C
(78°F)		23°C
(73°F)		21°C
(70°F)		20°C
(69°F)		20°C
(69°F)		22°C
(72°F)		23°C
(74°F)		24°C
(76°F)		27°C
(80°F)
Daily mean25°C
(78°F)		25°C
(77°F)		24°C
(76°F)		22°C
(72°F)		20°C
(68°F)		18°C
(65°F)		17°C
(62°F)		17°C
(63°F)		19°C
(67°F)		21°C
(70°F)		22°C
(72°F)		24°C
(75°F)
Average low23°C
(74°F)		22°C
(72°F)		22°C
(72°F)		20°C
(68°F)		17°C
(63°F)		16°C
(61°F)		14°C
(57°F)		15°C
(59°F)		17°C
(63°F)		19°C
(66°F)		20°C
(68°F)		21°C
(71°F)
Mean minimum20°C
(69°F)		20°C
(67°F)		19°C
(67°F)		16°C
(60°F)		12°C
(54°F)		11°C
(53°F)		8°C
(46°F)		9°C
(48°F)		14°C
(57°F)		15°C
(60°F)		16°C
(61°F)		18°C
(65°F)
Minimum19°C
(67°F)		17°C
(63°F)		19°C
(66°F)		13°C
(57°F)		10°C
(50°F)		8°C
(46°F)		6°C
(43°F)		8°C
(46°F)		12°C
(53°F)		13°C
(57°F)		14°C
(57°F)		16°C
(61°F)

Compare climate in Porto Belo with other places

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

Monthly average precipitation in Porto Belo, Brazil

Porto Belo usually has the most precipitation in January, February and December, with an average of 17 rainy days and 153 mm (6.0 inches) of precipitation per month. The driest months in Porto Belo are April, July and August. On average, 62 mm (2.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Porto Belo. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)172 (6.8)144 (5.7)134 (5.3)80 (3.1)103 (4.1)116 (4.6)45 (1.8)63 (2.5)85 (3.3)127 (5.0)98 (3.9)144 (5.7)
Average precipitation days (≥ 1 mm)1816211413116912161517

Monthly sunshine hours in Porto Belo, Brazil

The sunniest months in Porto Belo are March, November and December, when the sun shines an average of 10 hours 27 minutes a day. Least sunny months in Porto Belo: January, June and September receive an average of 7 hours 59 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Porto Belo. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours251301308288252228263258248260313339
Mean daily daylight hours13h 36m12h 59m12h 12m11h 24m10h 45m10h 26m10h 36m11h 10m11h 56m12h 44m13h 27m13h 48m

Solar UV radiation in Porto Belo, Brazil

Porto Belo experiences the highest level of ultraviolet (UV) radiation in January, November and December, when the maximum UV index can reach values of 14 - 15, 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 7. For more detailed information, check out our hourly Porto Belo UV Index data.

Average daily maximum UV levels by month for Porto Belo. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)15141210755810121415