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Monthly climate in Viana, Maranhão, Brazil

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Viana features a tropical savanna climate (Aw). Temperatures typically range between 27 °C (81 °F) and 29 °C (84 °F) through the year, but rarely can drop to 21 °C (70 °F) or can rise to as high as 38 °C (101 °F). The average annual precipitation amounts to about 1918 mm (75.5 inches) and receives 197 rainy days on the 1 mm (0.04 inches) threshold annually. Viana enjoys an average of 3568 hours of sunshine throughout the year, and daylight varies from 11 hours 55 minutes to 12 hours 17 minutes per day.

Monthly average temperatures in Viana, Maranhão, Brazil §

The warmest months in Viana are September, October and November, with daily mean temperatures ranging from 29 to 29 °C (84 - 84 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from 27 to 27 °C (81 - 81 °F) throughout the day. On average each year, Viana 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 Viana, 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
(94°F)		 34°C
(94°F)		 34°C
(93°F)		 34°C
(93°F)		 34°C
(93°F)		 34°C
(93°F)		 34°C
(93°F)		 35°C
(96°F)		 37°C
(98°F)		 38°C
(100°F)		 37°C
(99°F)		 38°C
(101°F)
Mean maximum 34°C
(93°F)		 33°C
(92°F)		 33°C
(92°F)		 33°C
(92°F)		 33°C
(92°F)		 33°C
(91°F)		 33°C
(92°F)		 35°C
(95°F)		 36°C
(97°F)		 36°C
(97°F)		 35°C
(96°F)		 35°C
(94°F)
Average high 31°C
(88°F)		 31°C
(88°F)		 31°C
(88°F)		 31°C
(88°F)		 32°C
(89°F)		 32°C
(89°F)		 32°C
(89°F)		 33°C
(91°F)		 34°C
(94°F)		 34°C
(94°F)		 33°C
(92°F)		 32°C
(90°F)
Daily mean 27°C
(81°F)		 27°C
(81°F)		 27°C
(81°F)		 27°C
(81°F)		 28°C
(82°F)		 28°C
(82°F)		 27°C
(82°F)		 28°C
(83°F)		 29°C
(84°F)		 29°C
(84°F)		 29°C
(84°F)		 28°C
(83°F)
Average low 25°C
(76°F)		 25°C
(77°F)		 25°C
(76°F)		 25°C
(77°F)		 25°C
(77°F)		 24°C
(76°F)		 24°C
(75°F)		 24°C
(76°F)		 25°C
(77°F)		 25°C
(78°F)		 25°C
(78°F)		 25°C
(78°F)
Mean minimum 23°C
(74°F)		 23°C
(74°F)		 24°C
(75°F)		 24°C
(75°F)		 24°C
(75°F)		 24°C
(75°F)		 22°C
(71°F)		 22°C
(72°F)		 24°C
(75°F)		 24°C
(76°F)		 24°C
(76°F)		 24°C
(75°F)
Minimum 23°C
(74°F)		 23°C
(74°F)		 23°C
(74°F)		 23°C
(73°F)		 23°C
(74°F)		 23°C
(73°F)		 21°C
(70°F)		 21°C
(70°F)		 23°C
(74°F)		 24°C
(76°F)		 24°C
(75°F)		 23°C
(74°F)

Compare climate in Viana with other places

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

Monthly average precipitation in Viana, Maranhão, Brazil §

Viana usually has the most precipitation in February, March and April, with an average of 28 rainy days and 386 mm (15.2 inches) of precipitation per month. The driest months in Viana are August, September and October. On average, 22 mm (0.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Viana, 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) 201 (7.9) 336 (13.2) 421 (16.6) 402 (15.8) 185 (7.3) 72 (2.9) 49 (1.9) 19 (0.7) 17 (0.7) 30 (1.2) 68 (2.7) 117 (4.6)
Average precipitation days (≥ 1 mm) 24 27 30 28 23 13 10 3 2 6 11 20

Monthly sunshine hours in Viana, Maranhão, Brazil §

The sunniest months in Viana are July, August and October, when the sun shines an average of 11 hours 4 minutes a day. Least sunny months in Viana: January, February and April receive an average of 7 hours 53 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Viana, 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 230 228 254 251 300 319 340 345 337 344 311 303
Mean daily daylight hours 12h 16m 12h 11m 12h 6m 12h 1m 11h 57m 11h 55m 11h 56m 11h 59m 12h 4m 12h 9m 12h 15m 12h 17m

Solar UV radiation in Viana, Maranhão, Brazil §

Viana experiences the highest level of ultraviolet (UV) radiation in January, March and April, when the maximum UV index can reach values of 15 - 16, which corresponds to the Extreme category of sun exposure. June, July and October 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 Viana UV Index data.

Average daily maximum UV levels by month for Viana, 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 14 16 15 13 12 11 13 13 12 13 13

Detailed Monthly Weather Insights for Viana, Maranhão, Brazil

Discover in-depth weather details for every month in Viana. 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 Viana'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.