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Monthly climate in Riachao, Brazil

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Riachao features a tropical savanna climate (Aw). Temperatures typically range between 25 °C (78 °F) and 29 °C (85 °F) through the year, but rarely can drop to 16 °C (62 °F) or can rise to as high as 39 °C (103 °F). The average annual precipitation amounts to about 1438 mm (56.6 inches) and receives 151 rainy days on the 1 mm (0.04 inches) threshold annually. Riachao enjoys an average of 3658 hours of sunshine throughout the year, and daylight varies from 11 hours 41 minutes to 12 hours 31 minutes per day.

Monthly average temperatures in Riachao, Brazil

The warmest months in Riachao are August, September and October, with daily mean temperatures ranging from 28 to 29 °C (83 - 85 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from 25 to 26 °C (78 - 78 °F) throughout the day. On average each year, Riachao experiences 329 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 Riachao. 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)		33°C
(91°F)		34°C
(93°F)		35°C
(95°F)		35°C
(95°F)		36°C
(97°F)		37°C
(99°F)		38°C
(101°F)		39°C
(103°F)		35°C
(96°F)		34°C
(94°F)
Mean maximum33°C
(92°F)		33°C
(91°F)		32°C
(91°F)		33°C
(92°F)		34°C
(94°F)		34°C
(93°F)		35°C
(95°F)		36°C
(98°F)		38°C
(100°F)		37°C
(99°F)		34°C
(94°F)		34°C
(93°F)
Average high30°C
(86°F)		30°C
(86°F)		30°C
(87°F)		31°C
(88°F)		32°C
(90°F)		33°C
(91°F)		33°C
(92°F)		35°C
(95°F)		36°C
(97°F)		34°C
(93°F)		31°C
(88°F)		31°C
(87°F)
Daily mean25°C
(78°F)		25°C
(78°F)		26°C
(78°F)		26°C
(79°F)		27°C
(81°F)		27°C
(80°F)		27°C
(80°F)		28°C
(83°F)		29°C
(85°F)		28°C
(83°F)		26°C
(80°F)		26°C
(79°F)
Average low22°C
(72°F)		22°C
(72°F)		22°C
(72°F)		22°C
(72°F)		22°C
(72°F)		21°C
(71°F)		21°C
(70°F)		22°C
(71°F)		23°C
(74°F)		23°C
(74°F)		23°C
(73°F)		22°C
(73°F)
Mean minimum21°C
(69°F)		21°C
(70°F)		21°C
(70°F)		21°C
(70°F)		20°C
(69°F)		19°C
(67°F)		19°C
(66°F)		19°C
(67°F)		21°C
(70°F)		21°C
(71°F)		21°C
(70°F)		21°C
(70°F)
Minimum20°C
(69°F)		20°C
(69°F)		21°C
(70°F)		20°C
(69°F)		19°C
(66°F)		17°C
(63°F)		16°C
(62°F)		17°C
(64°F)		21°C
(69°F)		20°C
(69°F)		20°C
(68°F)		20°C
(69°F)

Compare climate in Riachao with other places

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

Monthly average precipitation in Riachao, Brazil

Riachao usually has the most precipitation in February, March and December, with an average of 25 rainy days and 262 mm (10.3 inches) of precipitation per month. The driest months in Riachao are June, July and August. On average, 3 mm (0.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Riachao. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)186 (7.3)309 (12.2)272 (10.7)180 (7.1)34 (1.4)3 (0.1)3 (0.1)3 (0.1)6 (0.2)62 (2.4)176 (6.9)204 (8.0)
Average precipitation days (≥ 1 mm)222628195000192021

Monthly sunshine hours in Riachao, Brazil

The sunniest months in Riachao are July, August and September, when the sun shines an average of 11 hours 9 minutes a day. Least sunny months in Riachao: January, February and March receive an average of 8 hours 26 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Riachao. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours250234283294331329342345337335288285
Mean daily daylight hours12h 28m12h 19m12h 7m11h 55m11h 45m11h 41m11h 43m11h 51m12h 3m12h 15m12h 26m12h 31m

Solar UV radiation in Riachao, Brazil

Riachao experiences the highest level of ultraviolet (UV) radiation in January, February and March, 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 Extreme exposure category. In these months, the maximum values of the UV index do not exceed 13. For more detailed information, check out our hourly Riachao UV Index data.

Average daily maximum UV levels by month for Riachao. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)151515141311111313141414