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Monthly climate in Sao Mateus, Portugal

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Sao Mateus features a warm-summer Mediterranean climate (Csb). Temperatures typically range between 15 °C (59 °F) and 22 °C (72 °F) through the year, but rarely can drop to 10 °C (50 °F) or can rise to as high as 24 °C (76 °F). The average annual precipitation amounts to about 803 mm (31.6 inches) and receives 120 rainy days on the 1 mm (0.04 inches) threshold annually. Sao Mateus enjoys an average of 3311 hours of sunshine throughout the year, and daylight varies from 9 hours 29 minutes to 14 hours 48 minutes per day.

Monthly average temperatures in Sao Mateus, Portugal

The warmest months in Sao Mateus are July, August and September, with daily mean temperatures ranging from 21 to 22 °C (70 - 72 °F) throughout the day. The coldest temperatures usually occur in February, March and April, when daily mean temperatures range from 15 to 15 °C (59 - 60 °F) throughout the day. On average each year, Sao Mateus experiences 0 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
Maximum19°C
(66°F)		18°C
(65°F)		18°C
(64°F)		18°C
(64°F)		19°C
(67°F)		22°C
(72°F)		23°C
(74°F)		24°C
(76°F)		24°C
(76°F)		24°C
(76°F)		22°C
(71°F)		20°C
(68°F)
Mean maximum18°C
(65°F)		17°C
(63°F)		17°C
(63°F)		17°C
(64°F)		19°C
(66°F)		20°C
(68°F)		23°C
(73°F)		24°C
(75°F)		24°C
(75°F)		23°C
(73°F)		21°C
(70°F)		19°C
(67°F)
Average high16°C
(62°F)		16°C
(61°F)		16°C
(60°F)		16°C
(61°F)		17°C
(63°F)		19°C
(67°F)		21°C
(71°F)		23°C
(73°F)		22°C
(72°F)		21°C
(70°F)		19°C
(66°F)		18°C
(64°F)
Daily mean16°C
(61°F)		15°C
(59°F)		15°C
(59°F)		15°C
(60°F)		16°C
(62°F)		19°C
(66°F)		21°C
(70°F)		22°C
(72°F)		22°C
(71°F)		20°C
(69°F)		18°C
(65°F)		17°C
(63°F)
Average low15°C
(60°F)		14°C
(58°F)		14°C
(58°F)		15°C
(59°F)		16°C
(61°F)		18°C
(65°F)		20°C
(69°F)		22°C
(71°F)		21°C
(70°F)		19°C
(67°F)		17°C
(63°F)		16°C
(61°F)
Mean minimum13°C
(55°F)		11°C
(52°F)		12°C
(53°F)		12°C
(54°F)		13°C
(56°F)		16°C
(60°F)		18°C
(65°F)		20°C
(68°F)		19°C
(67°F)		16°C
(62°F)		14°C
(58°F)		13°C
(56°F)
Minimum11°C
(52°F)		10°C
(51°F)		10°C
(50°F)		10°C
(51°F)		12°C
(53°F)		15°C
(58°F)		18°C
(65°F)		19°C
(66°F)		19°C
(66°F)		15°C
(58°F)		13°C
(55°F)		12°C
(54°F)

Compare climate in Sao Mateus with other places

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

Monthly average precipitation in Sao Mateus, Portugal

Sao Mateus usually has the most precipitation in October, November and December, with an average of 13 rainy days and 104 mm (4.1 inches) of precipitation per month. The driest months in Sao Mateus are June, July and September. On average, 37 mm (1.4 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)78 (3.1)77 (3.0)49 (1.9)76 (3.0)54 (2.1)43 (1.7)22 (0.8)47 (1.9)45 (1.8)83 (3.3)107 (4.2)121 (4.8)
Average precipitation days (≥ 1 mm)1113913863810121413

Monthly sunshine hours in Sao Mateus, Portugal

The sunniest months in Sao Mateus are June, July and August, when the sun shines an average of 11 hours 50 minutes a day. Least sunny months in Sao Mateus: January, February and December receive an average of 5 hours 59 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 hours147204261290336352379357317266204193
Mean daily daylight hours9h 47m10h 45m11h 58m13h 13m14h 17m14h 48m14h 32m13h 35m12h 23m11h 8m10h 3m9h 29m

Solar UV radiation in Sao Mateus, Portugal

Sao Mateus experiences the highest level of ultraviolet (UV) radiation in May, June and August, when the maximum UV index can reach values of 10 - 11, which corresponds to the Very High / Extreme category of sun exposure. January, November and December are in the Moderate exposure category. In these months, the maximum values of the UV index do not exceed 4. 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)3579101110109743