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Monthly climate in Riachao, Maranhão, Brazil

Last updated: March 2, 2024

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, Maranhão, 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, Maranhão, Brazil. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 34°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 maximum 33°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 high 30°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 mean 25°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 low 22°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 minimum 21°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)
Minimum 20°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, Maranhão, Brazil with other places around the world.

Monthly average precipitation in Riachao, Maranhão, 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, Maranhão, Brazil. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
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) 22 26 28 19 5 0 0 0 1 9 20 21

Monthly sunshine hours in Riachao, Maranhão, 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, Maranhão, Brazil. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 250 234 283 294 331 329 342 345 337 335 288 285
Mean daily daylight hours 12h 28m 12h 19m 12h 7m 11h 55m 11h 45m 11h 41m 11h 43m 11h 51m 12h 3m 12h 15m 12h 26m 12h 31m

Solar UV radiation in Riachao, Maranhão, 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, Maranhão, Brazil. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 15 15 15 14 13 11 11 13 13 14 14 14

Detailed Monthly Weather Insights for Riachao, Maranhão, Brazil

Discover in-depth weather details for every month in Riachao. Click through the links below for comprehensive overviews of temperature trends, precipitation levels, sunshine hours, and solar UV radiation specifics. Whether planning a visit or simply curious about Riachao's climate nuances, these monthly breakdowns provide the information you need for an informed understanding of what to expect throughout the year.

Each link leads to a detailed account of the typical weather conditions for that month, providing both locals and tourists with vital information to plan their daily activities, wardrobe, and travel itineraries accordingly.