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Monthly climate in Arcos, Brazil

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Arcos features a humid subtropical climate (Cwa). Temperatures typically range between 18 °C (65 °F) and 24 °C (76 °F) through the year, but rarely can drop to 5 °C (41 °F) or can rise to as high as 37 °C (100 °F). The average annual precipitation amounts to about 1048 mm (41.3 inches) and receives 121 rainy days on the 1 mm (0.04 inches) threshold annually. Arcos enjoys an average of 3576 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 Arcos, Brazil

The warmest months in Arcos are January, September and October, with daily mean temperatures ranging from 24 to 24 °C (75 - 76 °F) throughout the day. The coldest temperatures usually occur in May, June and July, when daily mean temperatures range from 18 to 20 °C (65 - 68 °F) throughout the day. On average each year, Arcos experiences 273 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 Arcos. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum34°C
(93°F)		34°C
(93°F)		32°C
(90°F)		31°C
(88°F)		29°C
(85°F)		29°C
(85°F)		29°C
(85°F)		32°C
(90°F)		37°C
(99°F)		37°C
(100°F)		34°C
(93°F)		32°C
(91°F)
Mean maximum33°C
(91°F)		32°C
(90°F)		32°C
(89°F)		30°C
(87°F)		29°C
(84°F)		28°C
(83°F)		28°C
(83°F)		31°C
(88°F)		35°C
(96°F)		35°C
(94°F)		32°C
(90°F)		32°C
(89°F)
Average high29°C
(84°F)		28°C
(83°F)		29°C
(84°F)		28°C
(82°F)		26°C
(79°F)		26°C
(78°F)		25°C
(78°F)		27°C
(80°F)		30°C
(87°F)		30°C
(86°F)		28°C
(82°F)		28°C
(83°F)
Daily mean24°C
(76°F)		23°C
(74°F)		24°C
(75°F)		22°C
(73°F)		20°C
(68°F)		20°C
(67°F)		18°C
(65°F)		20°C
(69°F)		24°C
(75°F)		24°C
(76°F)		23°C
(74°F)		23°C
(74°F)
Average low20°C
(68°F)		20°C
(68°F)		19°C
(67°F)		18°C
(64°F)		15°C
(59°F)		14°C
(58°F)		12°C
(55°F)		14°C
(58°F)		17°C
(63°F)		19°C
(67°F)		19°C
(66°F)		20°C
(67°F)
Mean minimum18°C
(65°F)		18°C
(65°F)		17°C
(62°F)		14°C
(57°F)		9°C
(49°F)		11°C
(53°F)		9°C
(48°F)		10°C
(50°F)		13°C
(56°F)		16°C
(61°F)		16°C
(61°F)		17°C
(63°F)
Minimum17°C
(62°F)		17°C
(63°F)		15°C
(60°F)		13°C
(56°F)		5°C
(41°F)		9°C
(49°F)		5°C
(42°F)		9°C
(48°F)		12°C
(53°F)		15°C
(59°F)		14°C
(58°F)		15°C
(59°F)

Compare climate in Arcos with other places

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

Monthly average precipitation in Arcos, Brazil

Arcos usually has the most precipitation in February, November and December, with an average of 19 rainy days and 192 mm (7.6 inches) of precipitation per month. The driest months in Arcos are June, July and August. On average, 6 mm (0.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Arcos. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)130 (5.1)177 (7.0)119 (4.7)41 (1.6)26 (1.0)8 (0.3)2 (0.1)9 (0.4)29 (1.2)108 (4.2)192 (7.5)207 (8.1)
Average precipitation days (≥ 1 mm)141916941013141822

Monthly sunshine hours in Arcos, Brazil

The sunniest months in Arcos are March, July and September, when the sun shines an average of 10 hours 22 minutes a day. Least sunny months in Arcos: January, February and November receive an average of 9 hours 5 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Arcos. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours267273315301300297319312319299276293
Mean daily daylight hours13h 11m12h 44m12h 10m11h 35m11h 7m10h 54m11h 1m11h 26m11h 58m12h 33m13h 4m13h 19m

Solar UV radiation in Arcos, Brazil

Arcos experiences the highest level of ultraviolet (UV) radiation in January, February and December, when the maximum UV index can reach values of 16 - 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 Arcos UV Index data.

Average daily maximum UV levels by month for Arcos. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)161614129781113141516