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Monthly climate in Iacu, Brazil

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Iacu features a tropical savanna climate (Aw). Temperatures typically range between 23 °C (73 °F) and 27 °C (82 °F) through the year, but rarely can drop to 13 °C (56 °F) or can rise to as high as 39 °C (102 °F). The average annual precipitation amounts to about 480 mm (18.9 inches) and receives 81 rainy days on the 1 mm (0.04 inches) threshold annually. Iacu enjoys an average of 3557 hours of sunshine throughout the year, and daylight varies from 11 hours 22 minutes to 12 hours 51 minutes per day.

Monthly average temperatures in Iacu, Brazil

The warmest months in Iacu are January, February and March, with daily mean temperatures ranging from 27 to 27 °C (80 - 82 °F) throughout the day. The coldest temperatures usually occur in June, July and August, when daily mean temperatures range from 23 to 24 °C (73 - 75 °F) throughout the day. On average each year, Iacu experiences 325 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 Iacu. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum37°C
(98°F)		38°C
(101°F)		39°C
(102°F)		36°C
(98°F)		36°C
(97°F)		33°C
(92°F)		34°C
(94°F)		32°C
(91°F)		38°C
(100°F)		38°C
(100°F)		37°C
(98°F)		37°C
(99°F)
Mean maximum36°C
(96°F)		36°C
(98°F)		37°C
(99°F)		35°C
(96°F)		34°C
(93°F)		32°C
(89°F)		31°C
(89°F)		32°C
(89°F)		34°C
(93°F)		36°C
(97°F)		34°C
(94°F)		35°C
(95°F)
Average high33°C
(91°F)		33°C
(93°F)		33°C
(92°F)		31°C
(89°F)		30°C
(86°F)		29°C
(84°F)		28°C
(83°F)		29°C
(84°F)		30°C
(87°F)		32°C
(91°F)		31°C
(88°F)		32°C
(90°F)
Daily mean27°C
(80°F)		27°C
(82°F)		27°C
(81°F)		26°C
(79°F)		25°C
(77°F)		24°C
(75°F)		23°C
(73°F)		23°C
(74°F)		24°C
(76°F)		26°C
(79°F)		26°C
(79°F)		26°C
(79°F)
Average low22°C
(72°F)		23°C
(73°F)		22°C
(73°F)		22°C
(72°F)		21°C
(69°F)		19°C
(67°F)		18°C
(65°F)		18°C
(65°F)		19°C
(67°F)		21°C
(70°F)		22°C
(71°F)		22°C
(71°F)
Mean minimum20°C
(68°F)		21°C
(69°F)		20°C
(69°F)		20°C
(68°F)		17°C
(64°F)		17°C
(63°F)		15°C
(60°F)		15°C
(59°F)		16°C
(62°F)		18°C
(65°F)		19°C
(67°F)		20°C
(67°F)
Minimum18°C
(65°F)		19°C
(66°F)		19°C
(67°F)		17°C
(64°F)		16°C
(61°F)		15°C
(60°F)		14°C
(58°F)		13°C
(56°F)		15°C
(59°F)		17°C
(64°F)		18°C
(65°F)		18°C
(65°F)

Compare climate in Iacu with other places

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

Monthly average precipitation in Iacu, Brazil

Iacu usually has the most precipitation in April, November and December, with an average of 9 rainy days and 76 mm (3.0 inches) of precipitation per month. The driest months in Iacu are June, August and September. On average, 18 mm (0.7 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Iacu. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)25 (1.0)44 (1.7)59 (2.3)80 (3.2)29 (1.1)20 (0.8)20 (0.8)17 (0.7)17 (0.7)21 (0.8)83 (3.3)65 (2.6)
Average precipitation days (≥ 1 mm)4691176665588

Monthly sunshine hours in Iacu, Brazil

The sunniest months in Iacu are March, October and December, when the sun shines an average of 10 hours 27 minutes a day. Least sunny months in Iacu: January, June and November receive an average of 9 hours 11 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Iacu. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours274288322295288279282298295329281320
Mean daily daylight hours12h 45m12h 29m12h 8m11h 47m11h 30m11h 22m11h 26m11h 41m12h 1m12h 22m12h 41m12h 51m

Solar UV radiation in Iacu, Brazil

Iacu experiences the highest level of ultraviolet (UV) radiation in January, February and November, when the maximum UV index can reach values of 15 - 15, which corresponds to the Extreme category of sun exposure. May, June and July are in the Very High / Extreme exposure category. In these months, the maximum values of the UV index do not exceed 11. For more detailed information, check out our hourly Iacu UV Index data.

Average daily maximum UV levels by month for Iacu. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)15151413119101213151514