Climate Insights for Viana

Região Geográfica Intermediária de São Luís, Maranhão, Brazil

Hottest
October
35°C peak94°F peak
Coldest
July
24°C low75°F low
Wettest
March
407 mm rain16 in rain
Best to Visit
Varies throughout year

Climate Overview

The climate in Viana is hot. The average annual temperature is 28°C and approximately 1,730 mm of precipitation falls per year. March is the wettest month, receiving around 407 mm of rainfall. Viana sits near the equator, so seasonal temperature differences are minimal throughout the year.The climate in Viana is hot. The average annual temperature is 82°F and approximately 68.1 in of precipitation falls per year. March is the wettest month, receiving around 16 in of rainfall. Viana sits near the equator, so seasonal temperature differences are minimal throughout the year.

Temperature

0°10°20°30°40°JanFebMarAprMayJunJulAugSepOctNovDecJanMax: 31°Average: 27°Min: 25°FebMax: 31°Average: 27°Min: 25°MarMax: 31°Average: 27°Min: 25°AprMax: 31°Average: 27°Min: 25°MayMax: 32°Average: 28°Min: 25°JunMax: 32°Average: 28°Min: 24°JulMax: 32°Average: 28°Min: 24°AugMax: 33°Average: 28°Min: 24°SepMax: 34°Average: 29°Min: 25°OctMax: 35°Average: 29°Min: 25°NovMax: 34°Average: 29°Min: 25°DecMax: 33°Average: 28°Min: 25°
Max
Average
Min
0°F10°F20°F30°F40°F50°F60°F70°F80°F90°F100°FJanFebMarAprMayJunJulAugSepOctNovDecJanMax: 88°FAverage: 81°FMin: 76°FFebMax: 88°FAverage: 81°FMin: 76°FMarMax: 88°FAverage: 81°FMin: 76°FAprMax: 88°FAverage: 81°FMin: 77°FMayMax: 89°FAverage: 82°FMin: 77°FJunMax: 89°FAverage: 82°FMin: 76°FJulMax: 89°FAverage: 82°FMin: 75°FAugMax: 92°FAverage: 83°FMin: 76°FSepMax: 94°FAverage: 84°FMin: 77°FOctMax: 94°FAverage: 84°FMin: 78°FNovMax: 93°FAverage: 84°FMin: 78°FDecMax: 91°FAverage: 83°FMin: 77°F
Max
Average
Min

Viana sees moderate temperature variation throughout the year, ranging from 24°C to 35°C. The warmest month is October, when average highs reach 35°C and the mean temperature sits around 29°C. July is the coolest month, with minimum temperatures around 24°C and an average of 28°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows.Viana sees moderate temperature variation throughout the year, ranging from 75°F to 94°F. The warmest month is October, when average highs reach 94°F and the mean temperature sits around 84°F. July is the coolest month, with minimum temperatures around 75°F and an average of 82°F. Daily temperature variation is modest, with an average difference of 14°F between highs and lows.

Precipitation

0mm50mm100mm150mm200mm250mm300mm350mm400mm450mmJanFebMarAprMayJunJulAugSepOctNovDecJanPrecipitation: 211mmFebPrecipitation: 293mmMarPrecipitation: 407mmAprPrecipitation: 359mmMayPrecipitation: 154mmJunPrecipitation: 60mmJulPrecipitation: 40mmAugPrecipitation: 14mmSepPrecipitation: 10mmOctPrecipitation: 19mmNovPrecipitation: 47mmDecPrecipitation: 115mm
Precipitation
0in2in4in6in8in10in12in14in16inJanFebMarAprMayJunJulAugSepOctNovDecJanPrecipitation: 8.3inFebPrecipitation: 11.5inMarPrecipitation: 16inAprPrecipitation: 14.1inMayPrecipitation: 6.1inJunPrecipitation: 2.3inJulPrecipitation: 1.6inAugPrecipitation: 0.6inSepPrecipitation: 0.4inOctPrecipitation: 0.8inNovPrecipitation: 1.9inDecPrecipitation: 4.5in
Precipitation

Viana is a fairly wet location, receiving approximately 1,730 mm of precipitation annually, which averages out to around 144 mm per month. The wettest month is March, averaging 407 mm of rainfall. April and February also tend to see above-average precipitation. The driest month is September, with just 10 mm. That's 397 mm less than March, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.Viana is a fairly wet location, receiving approximately 68.1 in of precipitation annually, which averages out to around 5.7 in per month. The wettest month is March, averaging 16 in of rainfall. April and February also tend to see above-average precipitation. The driest month is September, with just 0.4 in. That's 15.6 in less than March, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

Wind

0km/h5km/h10km/h15km/hJanFebMarAprMayJunJulAugSepOctNovDecJanWind Speed: 8km/hFebWind Speed: 8km/hMarWind Speed: 7km/hAprWind Speed: 7km/hMayWind Speed: 7km/hJunWind Speed: 8km/hJulWind Speed: 9km/hAugWind Speed: 10km/hSepWind Speed: 13km/hOctWind Speed: 13km/hNovWind Speed: 12km/hDecWind Speed: 11km/h
Wind Speed
0mph5mph10mphJanFebMarAprMayJunJulAugSepOctNovDecJanWind Speed: 5mphFebWind Speed: 5mphMarWind Speed: 4mphAprWind Speed: 4mphMayWind Speed: 5mphJunWind Speed: 5mphJulWind Speed: 5mphAugWind Speed: 6mphSepWind Speed: 8mphOctWind Speed: 8mphNovWind Speed: 8mphDecWind Speed: 7mph
Wind Speed

Viana is relatively calm, with an average annual wind speed of 9km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is October, averaging 13km/h, though still comfortable for most outdoor activities. The calmest conditions occur in April, with average winds dropping to 7km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 6km/h gap between the calmest and windiest months.Viana is mildly breezy, with an average annual wind speed of 6mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is October, averaging 8mph, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in April, with average winds dropping to 4mph, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 4mph gap between the calmest and windiest months.

Monthly Climate Data

The table below shows monthly climate averages for Viana based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.The table below shows monthly climate averages for Viana based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Fahrenheit (°F). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in miles per hour (mph). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.

Month
Min Temperature
Max Temperature
Wind Speed
Precipitation
Snow
Jan
25 °C76 °F
31 °C88 °F
8 km/h5 mph
211 mm8.3 in
0 cm0 in
Feb
25 °C76 °F
31 °C88 °F
8 km/h5 mph
293 mm11.5 in
0 cm0 in
Mar
25 °C76 °F
31 °C88 °F
7 km/h4 mph
407 mm16 in
0 cm0 in
Apr
25 °C77 °F
31 °C88 °F
7 km/h4 mph
359 mm14.1 in
0 cm0 in
May
25 °C77 °F
32 °C89 °F
7 km/h5 mph
154 mm6.1 in
0 cm0 in
Jun
24 °C76 °F
32 °C89 °F
8 km/h5 mph
60 mm2.3 in
0 cm0 in
Jul
24 °C75 °F
32 °C89 °F
9 km/h5 mph
40 mm1.6 in
0 cm0 in
Aug
24 °C76 °F
33 °C92 °F
10 km/h6 mph
14 mm0.6 in
0 cm0 in
Sep
25 °C77 °F
34 °C94 °F
13 km/h8 mph
10 mm0.4 in
0 cm0 in
OctCurrent
25 °C78 °F
35 °C94 °F
13 km/h8 mph
19 mm0.8 in
0 cm0 in
Nov
25 °C78 °F
34 °C93 °F
12 km/h8 mph
47 mm1.9 in
0 cm0 in
Dec
25 °C77 °F
33 °C91 °F
11 km/h7 mph
115 mm4.5 in
0 cm0 in