Climate Insights for Altamira

Região Geográfica Intermediária de Santa Inês-Bacabal, Maranhão, Brazil

Hottest
September
35°C peak94°F peak
Coldest
July
21°C low71°F low
Wettest
March
367 mm rain14.5 in rain
Best to Visit
Varies throughout year

Climate Overview

The climate in Altamira is hot. The average annual temperature is 27°C and approximately 1,484 mm of precipitation falls per year. March is the wettest month, receiving around 367 mm of rainfall. Altamira sits near the equator, so seasonal temperature differences are minimal throughout the year.The climate in Altamira is hot. The average annual temperature is 81°F and approximately 58.4 in of precipitation falls per year. March is the wettest month, receiving around 14.5 in of rainfall. Altamira sits near the equator, so seasonal temperature differences are minimal throughout the year.

Temperature

0°10°20°30°40°JanFebMarAprMayJunJulAugSepOctNovDecJanMax: 31°Average: 26°Min: 23°FebMax: 31°Average: 26°Min: 23°MarMax: 31°Average: 26°Min: 23°AprMax: 31°Average: 26°Min: 23°MayMax: 31°Average: 27°Min: 23°JunMax: 32°Average: 27°Min: 22°JulMax: 33°Average: 27°Min: 21°AugMax: 34°Average: 27°Min: 22°SepMax: 35°Average: 28°Min: 23°OctMax: 35°Average: 28°Min: 24°NovMax: 34°Average: 28°Min: 24°DecMax: 33°Average: 28°Min: 24°
Max
Average
Min
0°F10°F20°F30°F40°F50°F60°F70°F80°F90°F100°FJanFebMarAprMayJunJulAugSepOctNovDecJanMax: 88°FAverage: 80°FMin: 74°FFebMax: 88°FAverage: 79°FMin: 74°FMarMax: 87°FAverage: 79°FMin: 74°FAprMax: 88°FAverage: 79°FMin: 74°FMayMax: 88°FAverage: 80°FMin: 74°FJunMax: 89°FAverage: 80°FMin: 72°FJulMax: 91°FAverage: 80°FMin: 71°FAugMax: 93°FAverage: 81°FMin: 71°FSepMax: 94°FAverage: 83°FMin: 73°FOctMax: 94°FAverage: 83°FMin: 74°FNovMax: 93°FAverage: 83°FMin: 75°FDecMax: 91°FAverage: 82°FMin: 75°F
Max
Average
Min

Altamira sees moderate temperature variation throughout the year, ranging from 21°C to 35°C. The warmest month is September, when average highs reach 35°C and the mean temperature sits around 28°C. July is the coolest month, with minimum temperatures around 21°C and an average of 27°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs.Altamira sees moderate temperature variation throughout the year, ranging from 71°F to 94°F. The warmest month is September, when average highs reach 94°F and the mean temperature sits around 83°F. July is the coolest month, with minimum temperatures around 71°F and an average of 80°F. On average, daily temperatures fluctuate by about 17°F between overnight lows and afternoon highs.

Precipitation

0mm50mm100mm150mm200mm250mm300mm350mm400mmJanFebMarAprMayJunJulAugSepOctNovDecJanPrecipitation: 217mmFebPrecipitation: 275mmMarPrecipitation: 367mmAprPrecipitation: 242mmMayPrecipitation: 104mmJunPrecipitation: 37mmJulPrecipitation: 16mmAugPrecipitation: 10mmSepPrecipitation: 11mmOctPrecipitation: 23mmNovPrecipitation: 59mmDecPrecipitation: 123mm
Precipitation
0in2in4in6in8in10in12in14inJanFebMarAprMayJunJulAugSepOctNovDecJanPrecipitation: 8.5inFebPrecipitation: 10.8inMarPrecipitation: 14.5inAprPrecipitation: 9.5inMayPrecipitation: 4.1inJunPrecipitation: 1.5inJulPrecipitation: 0.6inAugPrecipitation: 0.4inSepPrecipitation: 0.4inOctPrecipitation: 0.9inNovPrecipitation: 2.3inDecPrecipitation: 4.8in
Precipitation

Altamira is a fairly wet location, receiving approximately 1,484 mm of precipitation annually, which averages out to around 124 mm per month. The wettest month is March, averaging 367 mm of rainfall. February and April also tend to see above-average precipitation. The driest month is August, with just 10 mm. That's 357 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.Altamira is a fairly wet location, receiving approximately 58.4 in of precipitation annually, which averages out to around 4.9 in per month. The wettest month is March, averaging 14.4 in of rainfall. February and April also tend to see above-average precipitation. The driest month is August, with just 0.4 in. That's 14.1 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/hJanFebMarAprMayJunJulAugSepOctNovDecJanWind Speed: 6km/hFebWind Speed: 6km/hMarWind Speed: 5km/hAprWind Speed: 5km/hMayWind Speed: 6km/hJunWind Speed: 7km/hJulWind Speed: 8km/hAugWind Speed: 8km/hSepWind Speed: 9km/hOctWind Speed: 9km/hNovWind Speed: 8km/hDecWind Speed: 7km/h
Wind Speed
0mph5mph10mphJanFebMarAprMayJunJulAugSepOctNovDecJanWind Speed: 4mphFebWind Speed: 4mphMarWind Speed: 3mphAprWind Speed: 3mphMayWind Speed: 4mphJunWind Speed: 4mphJulWind Speed: 5mphAugWind Speed: 5mphSepWind Speed: 6mphOctWind Speed: 6mphNovWind Speed: 5mphDecWind Speed: 5mph
Wind Speed

Altamira is relatively calm, with an average annual wind speed of 7km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is September, averaging 9km/h, though still comfortable for most outdoor activities. The calmest conditions occur in April, with average winds dropping to 5km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 4km/h gap between the calmest and windiest months.Altamira is mildly breezy, with an average annual wind speed of 4mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is September, averaging 6mph, though still comfortable for most outdoor activities. The calmest conditions occur in April, with average winds dropping to 3mph, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 3mph gap between the calmest and windiest months.

Monthly Climate Data

The table below shows monthly climate averages for Altamira 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 Altamira 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
23 °C74 °F
31 °C88 °F
6 km/h4 mph
217 mm8.5 in
0 cm0 in
Feb
23 °C74 °F
31 °C88 °F
6 km/h4 mph
275 mm10.8 in
0 cm0 in
Mar
23 °C74 °F
31 °C87 °F
5 km/h3 mph
367 mm14.5 in
0 cm0 in
Apr
23 °C74 °F
31 °C88 °F
5 km/h3 mph
242 mm9.5 in
0 cm0 in
May
23 °C74 °F
31 °C88 °F
6 km/h4 mph
104 mm4.1 in
0 cm0 in
Jun
22 °C72 °F
32 °C89 °F
7 km/h4 mph
37 mm1.5 in
0 cm0 in
Jul
21 °C71 °F
33 °C91 °F
8 km/h5 mph
16 mm0.6 in
0 cm0 in
Aug
22 °C71 °F
34 °C93 °F
8 km/h5 mph
10 mm0.4 in
0 cm0 in
Sep
23 °C73 °F
35 °C94 °F
9 km/h6 mph
11 mm0.4 in
0 cm0 in
OctCurrent
24 °C74 °F
35 °C94 °F
9 km/h6 mph
23 mm0.9 in
0 cm0 in
Nov
24 °C75 °F
34 °C93 °F
8 km/h5 mph
59 mm2.3 in
0 cm0 in
Dec
24 °C75 °F
33 °C91 °F
7 km/h5 mph
123 mm4.8 in
0 cm0 in