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Monthly climate in Tonantins, Brazil

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Tonantins features a tropical rainforest climate (Af). Temperatures typically range between 25 °C (78 °F) and 27 °C (80 °F) through the year, but rarely can drop to 18 °C (65 °F) or can rise to as high as 35 °C (96 °F). The average annual precipitation amounts to about 2953 mm (116.3 inches) and receives 301 rainy days on the 1 mm (0.04 inches) threshold annually. Tonantins enjoys an average of 3039 hours of sunshine throughout the year, and daylight varies from 11 hours 57 minutes to 12 hours 16 minutes per day.

Monthly average temperatures in Tonantins, Brazil

The warmest months in Tonantins are September, October and November, with daily mean temperatures ranging from 26 to 27 °C (80 - 80 °F) throughout the day. The coldest temperatures usually occur in May, June and July, when daily mean temperatures range from 25 to 26 °C (78 - 78 °F) throughout the day. On average each year, Tonantins experiences 328 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 Tonantins. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum34°C
(93°F)		35°C
(95°F)		34°C
(94°F)		34°C
(93°F)		32°C
(91°F)		33°C
(92°F)		32°C
(91°F)		35°C
(95°F)		35°C
(96°F)		35°C
(95°F)		34°C
(94°F)		34°C
(94°F)
Mean maximum33°C
(91°F)		34°C
(93°F)		33°C
(93°F)		33°C
(92°F)		32°C
(90°F)		32°C
(89°F)		32°C
(89°F)		34°C
(93°F)		34°C
(94°F)		34°C
(94°F)		34°C
(93°F)		33°C
(92°F)
Average high30°C
(86°F)		30°C
(87°F)		30°C
(87°F)		30°C
(86°F)		29°C
(85°F)		29°C
(85°F)		29°C
(85°F)		31°C
(88°F)		32°C
(89°F)		31°C
(89°F)		31°C
(88°F)		30°C
(86°F)
Daily mean26°C
(79°F)		26°C
(79°F)		26°C
(79°F)		26°C
(79°F)		26°C
(78°F)		25°C
(78°F)		25°C
(78°F)		26°C
(79°F)		27°C
(80°F)		27°C
(80°F)		26°C
(80°F)		26°C
(79°F)
Average low23°C
(74°F)		23°C
(75°F)		23°C
(74°F)		23°C
(74°F)		23°C
(74°F)		23°C
(73°F)		22°C
(72°F)		23°C
(73°F)		23°C
(74°F)		23°C
(74°F)		24°C
(75°F)		23°C
(74°F)
Mean minimum22°C
(72°F)		23°C
(73°F)		22°C
(73°F)		22°C
(72°F)		22°C
(72°F)		22°C
(71°F)		20°C
(69°F)		20°C
(69°F)		22°C
(72°F)		22°C
(72°F)		23°C
(73°F)		22°C
(73°F)
Minimum22°C
(72°F)		22°C
(72°F)		22°C
(72°F)		21°C
(71°F)		21°C
(70°F)		21°C
(69°F)		18°C
(65°F)		18°C
(65°F)		22°C
(71°F)		22°C
(72°F)		22°C
(72°F)		22°C
(72°F)

Compare climate in Tonantins with other places

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

Monthly average precipitation in Tonantins, Brazil

Tonantins usually has the most precipitation in March, April and December, with an average of 28 rainy days and 337 mm (13.3 inches) of precipitation per month. The driest months in Tonantins are July, August and September. On average, 132 mm (5.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Tonantins. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)286 (11.3)282 (11.1)340 (13.4)344 (13.5)322 (12.7)206 (8.1)158 (6.2)107 (4.2)131 (5.1)198 (7.8)252 (9.9)328 (12.9)
Average precipitation days (≥ 1 mm)222528272925221922262630

Monthly sunshine hours in Tonantins, Brazil

The sunniest months in Tonantins are July, August and September, when the sun shines an average of 9 hours 41 minutes a day. Least sunny months in Tonantins: January, February and April receive an average of 7 hours 12 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Tonantins. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours200223241225231261295307287284238240
Mean daily daylight hours12h 15m12h 11m12h 6m12h 1m11h 58m11h 57m11h 57m12h 0m12h 4m12h 9m12h 14m12h 16m

Solar UV radiation in Tonantins, Brazil

Tonantins experiences the highest level of ultraviolet (UV) radiation in February, March and April, when the maximum UV index can reach values of 16 - 16, which corresponds to the Extreme category of sun exposure. June, July and August are in the Extreme exposure category. In these months, the maximum values of the UV index do not exceed 12. For more detailed information, check out our hourly Tonantins UV Index data.

Average daily maximum UV levels by month for Tonantins. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)151616161312111213141314