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Monthly climate in Guacui, Brazil

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Guacui features a humid subtropical climate (Cwa). Temperatures typically range between 17 °C (64 °F) and 24 °C (75 °F) through the year, but rarely can drop to 6 °C (44 °F) or can rise to as high as 34 °C (94 °F). The average annual precipitation amounts to about 1420 mm (55.9 inches) and receives 152 rainy days on the 1 mm (0.04 inches) threshold annually. Guacui enjoys an average of 3292 hours of sunshine throughout the year, and daylight varies from 10 hours 52 minutes to 13 hours 21 minutes per day.

Monthly average temperatures in Guacui, Brazil

The warmest months in Guacui are January, February and March, with daily mean temperatures ranging from 23 to 24 °C (73 - 75 °F) throughout the day. The coldest temperatures usually occur in June, July and August, when daily mean temperatures range from 17 to 19 °C (64 - 66 °F) throughout the day. On average each year, Guacui experiences 218 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 Guacui. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum33°C
(91°F)		33°C
(92°F)		32°C
(90°F)		32°C
(90°F)		29°C
(85°F)		30°C
(86°F)		29°C
(84°F)		30°C
(85°F)		34°C
(94°F)		34°C
(94°F)		34°C
(94°F)		31°C
(89°F)
Mean maximum32°C
(90°F)		31°C
(89°F)		31°C
(89°F)		30°C
(87°F)		28°C
(83°F)		29°C
(84°F)		28°C
(82°F)		28°C
(83°F)		32°C
(89°F)		31°C
(89°F)		31°C
(88°F)		31°C
(88°F)
Average high29°C
(85°F)		28°C
(83°F)		28°C
(83°F)		26°C
(80°F)		25°C
(76°F)		24°C
(76°F)		24°C
(75°F)		23°C
(74°F)		27°C
(80°F)		26°C
(80°F)		26°C
(78°F)		27°C
(81°F)
Daily mean24°C
(75°F)		23°C
(74°F)		23°C
(73°F)		21°C
(70°F)		19°C
(67°F)		19°C
(66°F)		17°C
(64°F)		18°C
(64°F)		21°C
(70°F)		21°C
(71°F)		21°C
(70°F)		23°C
(73°F)
Average low20°C
(67°F)		19°C
(67°F)		19°C
(66°F)		17°C
(63°F)		15°C
(59°F)		14°C
(58°F)		12°C
(55°F)		13°C
(56°F)		16°C
(61°F)		18°C
(64°F)		18°C
(64°F)		19°C
(66°F)
Mean minimum17°C
(63°F)		17°C
(62°F)		15°C
(60°F)		13°C
(56°F)		10°C
(50°F)		11°C
(52°F)		9°C
(48°F)		8°C
(48°F)		11°C
(52°F)		13°C
(57°F)		13°C
(56°F)		15°C
(59°F)
Minimum16°C
(61°F)		16°C
(61°F)		13°C
(55°F)		11°C
(52°F)		7°C
(45°F)		8°C
(47°F)		7°C
(45°F)		6°C
(44°F)		9°C
(49°F)		13°C
(55°F)		13°C
(55°F)		12°C
(54°F)

Compare climate in Guacui with other places

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

Monthly average precipitation in Guacui, Brazil

Guacui usually has the most precipitation in February, November and December, with an average of 19 rainy days and 230 mm (9.1 inches) of precipitation per month. The driest months in Guacui are June, July and August. On average, 26 mm (1.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Guacui. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)125 (4.9)253 (9.9)173 (6.8)103 (4.1)58 (2.3)27 (1.1)17 (0.7)35 (1.4)49 (1.9)141 (5.5)200 (7.9)239 (9.4)
Average precipitation days (≥ 1 mm)11161812107587172021

Monthly sunshine hours in Guacui, Brazil

The sunniest months in Guacui are March, July and September, when the sun shines an average of 9 hours 38 minutes a day. Least sunny months in Guacui: February, October and November receive an average of 8 hours 18 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Guacui. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours273258303280275274288264294259230288
Mean daily daylight hours13h 12m12h 45m12h 10m11h 35m11h 6m10h 52m10h 59m11h 25m11h 58m12h 34m13h 5m13h 21m

Solar UV radiation in Guacui, Brazil

Guacui experiences the highest level of ultraviolet (UV) radiation in January, November 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 9. For more detailed information, check out our hourly Guacui UV Index data.

Average daily maximum UV levels by month for Guacui. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)161514129781012141515