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Monthly climate in Sao Mateus, Brazil

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Sao Mateus features a tropical savanna climate (Aw). Temperatures typically range between 22 °C (73 °F) and 26 °C (80 °F) through the year, but rarely can drop to 18 °C (65 °F) or can rise to as high as 31 °C (88 °F). The average annual precipitation amounts to about 1267 mm (49.9 inches) and receives 200 rainy days on the 1 mm (0.04 inches) threshold annually. Sao Mateus enjoys an average of 3693 hours of sunshine throughout the year, and daylight varies from 11 hours 0 minutes to 13 hours 13 minutes per day.

Monthly average temperatures in Sao Mateus, Brazil

The warmest months in Sao Mateus are January, February and March, with daily mean temperatures ranging from 26 to 26 °C (79 - 80 °F) throughout the day. The coldest temperatures usually occur in June, July and August, when daily mean temperatures range from 22 to 23 °C (73 - 74 °F) throughout the day. On average each year, Sao Mateus experiences 253 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 Sao Mateus. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum30°C
(86°F)		31°C
(88°F)		30°C
(87°F)		31°C
(88°F)		29°C
(85°F)		29°C
(85°F)		29°C
(84°F)		27°C
(81°F)		28°C
(83°F)		29°C
(84°F)		30°C
(85°F)		29°C
(85°F)
Mean maximum29°C
(85°F)		30°C
(86°F)		30°C
(86°F)		30°C
(86°F)		29°C
(84°F)		27°C
(81°F)		27°C
(80°F)		26°C
(79°F)		27°C
(81°F)		29°C
(84°F)		29°C
(84°F)		29°C
(84°F)
Average high28°C
(83°F)		28°C
(83°F)		28°C
(83°F)		27°C
(81°F)		26°C
(79°F)		25°C
(78°F)		24°C
(76°F)		24°C
(76°F)		25°C
(78°F)		26°C
(80°F)		26°C
(80°F)		27°C
(81°F)
Daily mean26°C
(79°F)		26°C
(80°F)		26°C
(80°F)		25°C
(78°F)		24°C
(76°F)		23°C
(74°F)		22°C
(73°F)		22°C
(73°F)		24°C
(75°F)		25°C
(77°F)		25°C
(77°F)		26°C
(78°F)
Average low24°C
(76°F)		25°C
(77°F)		24°C
(76°F)		24°C
(75°F)		23°C
(73°F)		22°C
(71°F)		21°C
(69°F)		21°C
(69°F)		22°C
(72°F)		23°C
(74°F)		23°C
(74°F)		24°C
(76°F)
Mean minimum23°C
(74°F)		23°C
(75°F)		23°C
(73°F)		22°C
(72°F)		21°C
(69°F)		20°C
(69°F)		19°C
(67°F)		19°C
(66°F)		20°C
(68°F)		21°C
(71°F)		21°C
(71°F)		22°C
(72°F)
Minimum23°C
(73°F)		23°C
(73°F)		22°C
(73°F)		22°C
(71°F)		18°C
(65°F)		19°C
(67°F)		19°C
(66°F)		18°C
(65°F)		20°C
(67°F)		21°C
(70°F)		21°C
(69°F)		22°C
(72°F)

Compare climate in Sao Mateus with other places

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

Monthly average precipitation in Sao Mateus, Brazil

Sao Mateus usually has the most precipitation in October, November and December, with an average of 19 rainy days and 187 mm (7.4 inches) of precipitation per month. The driest months in Sao Mateus are June, July and September. On average, 54 mm (2.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Sao Mateus. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)74 (2.9)115 (4.5)112 (4.4)99 (3.9)81 (3.2)53 (2.1)48 (1.9)64 (2.5)60 (2.4)135 (5.3)179 (7.1)246 (9.7)
Average precipitation days (≥ 1 mm)141918191614151612182019

Monthly sunshine hours in Sao Mateus, Brazil

The sunniest months in Sao Mateus are March, September and December, when the sun shines an average of 10 hours 32 minutes a day. Least sunny months in Sao Mateus: January, February and November receive an average of 9 hours 42 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Sao Mateus. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours294297329312300298311312319314281321
Mean daily daylight hours13h 5m12h 41m12h 9m11h 38m11h 12m11h 0m11h 6m11h 29m11h 59m12h 31m12h 59m13h 13m

Solar UV radiation in Sao Mateus, Brazil

Sao Mateus experiences the highest level of ultraviolet (UV) radiation in January, November and December, when the maximum UV index can reach values of 15 - 15, which corresponds to the Extreme category of sun exposure. May, June and July are in the High / Very High exposure category. In these months, the maximum values of the UV index do not exceed 9. For more detailed information, check out our hourly Sao Mateus UV Index data.

Average daily maximum UV levels by month for Sao Mateus. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)151513129781012141515