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Monthly climate in Santarem, Brazil

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Santarem features a tropical monsoon climate (Am). Temperatures typically range between 26 °C (80 °F) and 29 °C (84 °F) through the year, but rarely can drop to 23 °C (74 °F) or can rise to as high as 35 °C (95 °F). The average annual precipitation amounts to about 3054 mm (120.3 inches) and receives 257 rainy days on the 1 mm (0.04 inches) threshold annually. Santarem enjoys an average of 3507 hours of sunshine throughout the year, and daylight varies from 11 hours 58 minutes to 12 hours 14 minutes per day.

Monthly average temperatures in Santarem, Brazil

The warmest months in Santarem are September, October and November, with daily mean temperatures ranging from 28 to 29 °C (83 - 84 °F) throughout the day. The coldest temperatures usually occur in January, February and April, when daily mean temperatures range from 26 to 26 °C (80 - 80 °F) throughout the day. On average each year, Santarem 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 Santarem. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum31°C
(88°F)		31°C
(88°F)		32°C
(90°F)		31°C
(89°F)		31°C
(88°F)		32°C
(90°F)		33°C
(91°F)		34°C
(94°F)		34°C
(93°F)		35°C
(95°F)		34°C
(93°F)		34°C
(93°F)
Mean maximum31°C
(88°F)		31°C
(88°F)		31°C
(88°F)		31°C
(87°F)		31°C
(88°F)		31°C
(88°F)		32°C
(89°F)		33°C
(91°F)		33°C
(92°F)		34°C
(93°F)		33°C
(92°F)		32°C
(90°F)
Average high29°C
(84°F)		29°C
(84°F)		29°C
(84°F)		29°C
(84°F)		29°C
(85°F)		30°C
(85°F)		30°C
(86°F)		31°C
(88°F)		32°C
(90°F)		32°C
(90°F)		31°C
(88°F)		30°C
(86°F)
Daily mean26°C
(80°F)		26°C
(80°F)		26°C
(80°F)		26°C
(80°F)		27°C
(80°F)		27°C
(81°F)		27°C
(81°F)		28°C
(83°F)		29°C
(84°F)		29°C
(84°F)		28°C
(83°F)		27°C
(81°F)
Average low24°C
(76°F)		25°C
(76°F)		25°C
(77°F)		25°C
(77°F)		25°C
(77°F)		25°C
(77°F)		25°C
(77°F)		26°C
(79°F)		26°C
(80°F)		26°C
(80°F)		26°C
(79°F)		25°C
(77°F)
Mean minimum23°C
(75°F)		24°C
(75°F)		24°C
(75°F)		24°C
(75°F)		24°C
(75°F)		24°C
(75°F)		24°C
(75°F)		24°C
(76°F)		24°C
(75°F)		25°C
(77°F)		24°C
(76°F)		24°C
(75°F)
Minimum23°C
(74°F)		23°C
(74°F)		23°C
(74°F)		24°C
(75°F)		24°C
(75°F)		23°C
(74°F)		23°C
(74°F)		24°C
(75°F)		24°C
(75°F)		24°C
(75°F)		24°C
(76°F)		23°C
(74°F)

Compare climate in Santarem with other places

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

Monthly average precipitation in Santarem, Brazil

Santarem usually has the most precipitation in February, March and April, with an average of 27 rainy days and 418 mm (16.5 inches) of precipitation per month. The driest months in Santarem are August, September and October. On average, 78 mm (3.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Santarem. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)351 (13.8)425 (16.7)399 (15.7)429 (16.9)359 (14.1)169 (6.7)137 (5.4)79 (3.1)69 (2.7)87 (3.4)190 (7.5)359 (14.1)
Average precipitation days (≥ 1 mm)24262829302517910122027

Monthly sunshine hours in Santarem, Brazil

The sunniest months in Santarem are July, August and September, when the sun shines an average of 11 hours 1 minutes a day. Least sunny months in Santarem: January, February and April receive an average of 8 hours 1 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Santarem. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours234240268246281313336340336333290284
Mean daily daylight hours12h 13m12h 10m12h 6m12h 2m11h 59m11h 58m11h 58m12h 1m12h 4m12h 9m12h 12m12h 14m

Solar UV radiation in Santarem, Brazil

Santarem 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 August 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 Santarem UV Index data.

Average daily maximum UV levels by month for Santarem. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)151516161312111212131313