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Monthly climate in Santo Isidoro, Portugal

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Santo Isidoro features a hot-summer Mediterranean climate (Csa). Temperatures typically range between 13 °C (55 °F) and 18 °C (65 °F) through the year, but rarely can drop to 7 °C (45 °F) or can rise to as high as 24 °C (76 °F). The average annual precipitation amounts to about 600 mm (23.6 inches) and receives 77 rainy days on the 1 mm (0.04 inches) threshold annually. Santo Isidoro enjoys an average of 3820 hours of sunshine throughout the year, and daylight varies from 9 hours 28 minutes to 14 hours 50 minutes per day.

Monthly average temperatures in Santo Isidoro, Portugal

The warmest months in Santo Isidoro are July, August and September, with daily mean temperatures ranging from 18 to 18 °C (64 - 65 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from 13 to 13 °C (55 - 56 °F) throughout the day. On average each year, Santo Isidoro 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 Santo Isidoro. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum18°C
(64°F)		17°C
(63°F)		19°C
(66°F)		21°C
(69°F)		24°C
(76°F)		21°C
(71°F)		22°C
(72°F)		23°C
(73°F)		24°C
(75°F)		24°C
(75°F)		20°C
(67°F)		17°C
(63°F)
Mean maximum16°C
(61°F)		16°C
(61°F)		17°C
(63°F)		17°C
(63°F)		20°C
(68°F)		19°C
(67°F)		20°C
(69°F)		20°C
(68°F)		22°C
(71°F)		21°C
(70°F)		19°C
(66°F)		17°C
(62°F)
Average high14°C
(57°F)		14°C
(58°F)		14°C
(58°F)		15°C
(59°F)		16°C
(62°F)		17°C
(63°F)		18°C
(65°F)		18°C
(65°F)		19°C
(66°F)		18°C
(65°F)		16°C
(61°F)		15°C
(59°F)
Daily mean13°C
(55°F)		13°C
(56°F)		13°C
(56°F)		14°C
(58°F)		16°C
(61°F)		17°C
(62°F)		18°C
(64°F)		18°C
(64°F)		18°C
(65°F)		17°C
(63°F)		15°C
(60°F)		14°C
(58°F)
Average low12°C
(53°F)		12°C
(54°F)		12°C
(55°F)		13°C
(56°F)		15°C
(59°F)		16°C
(61°F)		17°C
(63°F)		17°C
(64°F)		17°C
(64°F)		16°C
(62°F)		14°C
(58°F)		13°C
(56°F)
Mean minimum8°C
(47°F)		10°C
(50°F)		10°C
(50°F)		10°C
(51°F)		13°C
(55°F)		15°C
(60°F)		16°C
(61°F)		16°C
(62°F)		16°C
(61°F)		14°C
(57°F)		12°C
(53°F)		10°C
(51°F)
Minimum7°C
(45°F)		9°C
(48°F)		9°C
(48°F)		9°C
(49°F)		11°C
(52°F)		14°C
(58°F)		15°C
(60°F)		16°C
(61°F)		15°C
(59°F)		11°C
(51°F)		11°C
(52°F)		9°C
(48°F)

Compare climate in Santo Isidoro with other places

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

Monthly average precipitation in Santo Isidoro, Portugal

Santo Isidoro usually has the most precipitation in April, November and December, with an average of 11 rainy days and 86 mm (3.4 inches) of precipitation per month. The driest months in Santo Isidoro are June, July and August. On average, 9 mm (0.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Santo Isidoro. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)48 (1.9)63 (2.5)69 (2.7)77 (3.0)39 (1.5)16 (0.6)6 (0.2)6 (0.2)32 (1.3)63 (2.5)99 (3.9)82 (3.2)
Average precipitation days (≥ 1 mm)799124401261211

Monthly sunshine hours in Santo Isidoro, Portugal

The sunniest months in Santo Isidoro are May, June and July, when the sun shines an average of 13 hours 24 minutes a day. Least sunny months in Santo Isidoro: January, February and December receive an average of 6 hours 58 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Santo Isidoro. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours182231308351405407420394349312235221
Mean daily daylight hours9h 45m10h 44m11h 58m13h 14m14h 18m14h 50m14h 33m13h 36m12h 23m11h 7m10h 1m9h 28m

Solar UV radiation in Santo Isidoro, Portugal

Santo Isidoro experiences the highest level of ultraviolet (UV) radiation in May, June and July, 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 Santo Isidoro UV Index data.

Average daily maximum UV levels by month for Santo Isidoro. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)356910111098643