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Monthly climate in Sao Joao do Piaui, Brazil

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Sao Joao do Piaui features a hot semi-arid climate (BSh). Temperatures typically range between 27 °C (81 °F) and 31 °C (88 °F) through the year, but rarely can drop to 18 °C (66 °F) or can rise to as high as 40 °C (105 °F). The average annual precipitation amounts to about 582 mm (22.9 inches) and receives 74 rainy days on the 1 mm (0.04 inches) threshold annually. Sao Joao do Piaui enjoys an average of 3847 hours of sunshine throughout the year, and daylight varies from 11 hours 37 minutes to 12 hours 35 minutes per day.

Monthly average temperatures in Sao Joao do Piaui, Brazil

The warmest months in Sao Joao do Piaui are September, October and November, with daily mean temperatures ranging from 29 to 31 °C (85 - 88 °F) throughout the day. The coldest temperatures usually occur in February, March and July, when daily mean temperatures range from 27 to 27 °C (81 - 82 °F) throughout the day. On average each year, Sao Joao do Piaui 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 Sao Joao do Piaui. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum38°C
(100°F)		39°C
(102°F)		35°C
(96°F)		36°C
(97°F)		37°C
(99°F)		36°C
(97°F)		38°C
(101°F)		38°C
(100°F)		40°C
(105°F)		40°C
(104°F)		39°C
(103°F)		39°C
(103°F)
Mean maximum36°C
(97°F)		35°C
(96°F)		34°C
(93°F)		35°C
(95°F)		35°C
(96°F)		35°C
(95°F)		35°C
(96°F)		37°C
(99°F)		39°C
(102°F)		39°C
(102°F)		37°C
(99°F)		36°C
(97°F)
Average high33°C
(91°F)		32°C
(89°F)		31°C
(89°F)		32°C
(90°F)		33°C
(92°F)		33°C
(92°F)		33°C
(92°F)		35°C
(95°F)		36°C
(97°F)		37°C
(98°F)		34°C
(94°F)		33°C
(92°F)
Daily mean28°C
(83°F)		27°C
(81°F)		27°C
(81°F)		27°C
(82°F)		28°C
(83°F)		28°C
(82°F)		27°C
(82°F)		29°C
(84°F)		30°C
(86°F)		31°C
(88°F)		29°C
(85°F)		28°C
(83°F)
Average low24°C
(76°F)		23°C
(74°F)		23°C
(74°F)		24°C
(75°F)		24°C
(75°F)		23°C
(73°F)		22°C
(71°F)		22°C
(72°F)		24°C
(75°F)		25°C
(78°F)		25°C
(78°F)		24°C
(76°F)
Mean minimum22°C
(72°F)		22°C
(71°F)		22°C
(71°F)		22°C
(72°F)		22°C
(71°F)		21°C
(70°F)		20°C
(68°F)		20°C
(68°F)		21°C
(71°F)		23°C
(73°F)		23°C
(74°F)		22°C
(72°F)
Minimum21°C
(70°F)		21°C
(70°F)		21°C
(69°F)		21°C
(70°F)		20°C
(68°F)		19°C
(67°F)		19°C
(67°F)		18°C
(66°F)		20°C
(69°F)		22°C
(72°F)		21°C
(71°F)		22°C
(71°F)

Compare climate in Sao Joao do Piaui with other places

Compare temperature, precipitation, sunshine, UV index in Sao Joao do Piaui, Brazil with other places around the world.

Monthly average precipitation in Sao Joao do Piaui, Brazil

Sao Joao do Piaui usually has the most precipitation in February, March and April, with an average of 15 rainy days and 121 mm (4.8 inches) of precipitation per month. The driest months in Sao Joao do Piaui are July, August and September. On average, 0 mm (0.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Sao Joao do Piaui. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)59 (2.3)153 (6.0)109 (4.3)100 (3.9)15 (0.6)2 (0.1)1 (0.0)0 (0.0)0 (0.0)34 (1.3)55 (2.2)53 (2.1)
Average precipitation days (≥ 1 mm)1016181130000367

Monthly sunshine hours in Sao Joao do Piaui, Brazil

The sunniest months in Sao Joao do Piaui are August, September and October, when the sun shines an average of 11 hours 20 minutes a day. Least sunny months in Sao Joao do Piaui: January, February and April receive an average of 9 hours 37 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Sao Joao do Piaui. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours274279316312322320322343343356327327
Mean daily daylight hours12h 32m12h 21m12h 7m11h 53m11h 42m11h 37m11h 40m11h 50m12h 2m12h 16m12h 29m12h 35m

Solar UV radiation in Sao Joao do Piaui, Brazil

Sao Joao do Piaui 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 12. For more detailed information, check out our hourly Sao Joao do Piaui UV Index data.

Average daily maximum UV levels by month for Sao Joao do Piaui. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)151515141211111213141414