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Monthly climate in Barretos, Brazil

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Barretos features a tropical savanna climate (Aw). Temperatures typically range between 21 °C (70 °F) and 27 °C (80 °F) through the year, but rarely can drop to 4 °C (40 °F) or can rise to as high as 41 °C (105 °F). The average annual precipitation amounts to about 964 mm (37.9 inches) and receives 105 rainy days on the 1 mm (0.04 inches) threshold annually. Barretos enjoys an average of 3658 hours of sunshine throughout the year, and daylight varies from 10 hours 53 minutes to 13 hours 20 minutes per day.

Monthly average temperatures in Barretos, Brazil

The warmest months in Barretos are March, September and October, with daily mean temperatures ranging from 26 to 27 °C (79 - 80 °F) throughout the day. The coldest temperatures usually occur in May, June and July, when daily mean temperatures range from 21 to 22 °C (70 - 72 °F) throughout the day. On average each year, Barretos experiences 313 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 Barretos. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum36°C
(97°F)		36°C
(96°F)		35°C
(95°F)		34°C
(93°F)		33°C
(92°F)		31°C
(89°F)		32°C
(90°F)		35°C
(96°F)		39°C
(103°F)		41°C
(105°F)		38°C
(100°F)		35°C
(95°F)
Mean maximum35°C
(95°F)		34°C
(94°F)		34°C
(94°F)		33°C
(92°F)		32°C
(89°F)		31°C
(87°F)		31°C
(88°F)		35°C
(94°F)		38°C
(100°F)		37°C
(99°F)		36°C
(97°F)		34°C
(94°F)
Average high30°C
(87°F)		30°C
(87°F)		31°C
(88°F)		30°C
(87°F)		28°C
(83°F)		28°C
(83°F)		28°C
(82°F)		30°C
(86°F)		33°C
(92°F)		33°C
(91°F)		31°C
(88°F)		30°C
(87°F)
Daily mean26°C
(78°F)		25°C
(78°F)		26°C
(79°F)		25°C
(76°F)		22°C
(72°F)		22°C
(72°F)		21°C
(70°F)		23°C
(74°F)		27°C
(80°F)		27°C
(80°F)		26°C
(79°F)		26°C
(78°F)
Average low22°C
(72°F)		22°C
(71°F)		22°C
(71°F)		20°C
(67°F)		17°C
(62°F)		17°C
(62°F)		15°C
(58°F)		17°C
(63°F)		20°C
(68°F)		21°C
(71°F)		21°C
(70°F)		22°C
(71°F)
Mean minimum20°C
(68°F)		20°C
(68°F)		19°C
(67°F)		16°C
(60°F)		10°C
(50°F)		12°C
(55°F)		8°C
(47°F)		10°C
(51°F)		16°C
(60°F)		17°C
(64°F)		18°C
(64°F)		19°C
(66°F)
Minimum19°C
(66°F)		18°C
(64°F)		17°C
(62°F)		14°C
(57°F)		6°C
(44°F)		9°C
(49°F)		4°C
(40°F)		9°C
(48°F)		12°C
(54°F)		16°C
(61°F)		15°C
(58°F)		17°C
(63°F)

Compare climate in Barretos with other places

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

Monthly average precipitation in Barretos, Brazil

Barretos usually has the most precipitation in February, November and December, with an average of 17 rainy days and 165 mm (6.5 inches) of precipitation per month. The driest months in Barretos are June, July and August. On average, 7 mm (0.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Barretos. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)143 (5.6)165 (6.5)104 (4.1)60 (2.4)26 (1.0)3 (0.1)5 (0.2)14 (0.6)23 (0.9)92 (3.6)158 (6.2)170 (6.7)
Average precipitation days (≥ 1 mm)161713621022121618

Monthly sunshine hours in Barretos, Brazil

The sunniest months in Barretos are March, July and September, when the sun shines an average of 10 hours 29 minutes a day. Least sunny months in Barretos: January, February and June receive an average of 9 hours 9 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Barretos. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours251276328308309297318316317310307316
Mean daily daylight hours13h 12m12h 45m12h 10m11h 35m11h 6m10h 53m11h 0m11h 25m11h 58m12h 34m13h 5m13h 20m

Solar UV radiation in Barretos, Brazil

Barretos 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 Barretos UV Index data.

Average daily maximum UV levels by month for Barretos. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)161613119781012141416