nomadseason

Monthly climate in Altamira, Brazil

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Altamira features a tropical monsoon climate (Am). Temperatures typically range between 26 °C (79 °F) and 28 °C (84 °F) through the year, but rarely can drop to 21 °C (70 °F) or can rise to as high as 36 °C (97 °F). The average annual precipitation amounts to about 1787 mm (70.3 inches) and receives 218 rainy days on the 1 mm (0.04 inches) threshold annually. Altamira enjoys an average of 3354 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 Altamira, Brazil

The warmest months in Altamira are August, September and October, with daily mean temperatures ranging from 28 to 28 °C (83 - 84 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from 26 to 26 °C (79 - 79 °F) throughout the day. On average each year, Altamira 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 Altamira. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum33°C
(91°F)		33°C
(92°F)		33°C
(92°F)		33°C
(91°F)		33°C
(91°F)		34°C
(93°F)		35°C
(95°F)		36°C
(97°F)		36°C
(97°F)		36°C
(97°F)		36°C
(97°F)		35°C
(95°F)
Mean maximum32°C
(90°F)		32°C
(90°F)		33°C
(91°F)		32°C
(90°F)		32°C
(90°F)		33°C
(91°F)		34°C
(94°F)		35°C
(96°F)		35°C
(96°F)		35°C
(96°F)		35°C
(95°F)		34°C
(93°F)
Average high30°C
(86°F)		30°C
(86°F)		30°C
(86°F)		30°C
(87°F)		31°C
(88°F)		31°C
(89°F)		32°C
(90°F)		34°C
(93°F)		34°C
(93°F)		34°C
(93°F)		32°C
(90°F)		31°C
(88°F)
Daily mean26°C
(79°F)		26°C
(79°F)		26°C
(79°F)		26°C
(79°F)		26°C
(80°F)		27°C
(80°F)		27°C
(81°F)		28°C
(83°F)		28°C
(83°F)		28°C
(84°F)		28°C
(82°F)		27°C
(80°F)
Average low23°C
(74°F)		23°C
(74°F)		23°C
(74°F)		23°C
(74°F)		23°C
(74°F)		23°C
(73°F)		23°C
(73°F)		23°C
(74°F)		24°C
(76°F)		24°C
(76°F)		24°C
(76°F)		24°C
(75°F)
Mean minimum22°C
(72°F)		22°C
(72°F)		22°C
(72°F)		22°C
(72°F)		22°C
(73°F)		22°C
(72°F)		21°C
(71°F)		22°C
(71°F)		23°C
(73°F)		23°C
(74°F)		23°C
(73°F)		22°C
(73°F)
Minimum21°C
(71°F)		22°C
(72°F)		22°C
(71°F)		22°C
(72°F)		22°C
(72°F)		21°C
(70°F)		21°C
(70°F)		21°C
(71°F)		22°C
(72°F)		23°C
(74°F)		22°C
(72°F)		22°C
(72°F)

Compare climate in Altamira with other places

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

Monthly average precipitation in Altamira, Brazil

Altamira usually has the most precipitation in February, March and April, with an average of 27 rainy days and 282 mm (11.1 inches) of precipitation per month. The driest months in Altamira are July, August and September. On average, 35 mm (1.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Altamira. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)223 (8.8)271 (10.7)281 (11.1)293 (11.5)175 (6.9)62 (2.5)34 (1.3)36 (1.4)34 (1.3)41 (1.6)134 (5.3)202 (8.0)
Average precipitation days (≥ 1 mm)24252828261576691925

Monthly sunshine hours in Altamira, Brazil

The sunniest months in Altamira are July, August and September, when the sun shines an average of 11 hours 1 minutes a day. Least sunny months in Altamira: January, February and April receive an average of 7 hours 2 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Altamira. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours206210235216280310334345334329286263
Mean daily daylight hours12h 16m12h 11m12h 6m12h 1m11h 57m11h 55m11h 56m11h 59m12h 4m12h 9m12h 14m12h 17m

Solar UV radiation in Altamira, Brazil

Altamira 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 Altamira UV Index data.

Average daily maximum UV levels by month for Altamira. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)151516161311111212121413