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Monthly climate in Cartaxo, Portugal

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Cartaxo features a hot-summer Mediterranean climate (Csa). Temperatures typically range between 10 °C (50 °F) and 22 °C (72 °F) through the year, but rarely can drop to -3 °C (26 °F) or can rise to as high as 43 °C (110 °F). The average annual precipitation amounts to about 554 mm (21.8 inches) and receives 68 rainy days on the 1 mm (0.04 inches) threshold annually. Cartaxo enjoys an average of 3758 hours of sunshine throughout the year, and daylight varies from 9 hours 26 minutes to 14 hours 52 minutes per day.

Monthly average temperatures in Cartaxo, Portugal

The warmest months in Cartaxo are July, August and September, with daily mean temperatures ranging from 21 to 22 °C (71 - 72 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 10 to 12 °C (50 - 54 °F) throughout the day. On average each year, Cartaxo experiences 104 days above 25 °C (77.0 °F) and 1 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Cartaxo. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum21°C
(69°F)		25°C
(77°F)		28°C
(82°F)		30°C
(86°F)		36°C
(96°F)		41°C
(106°F)		40°C
(104°F)		43°C
(110°F)		37°C
(98°F)		36°C
(97°F)		25°C
(78°F)		20°C
(68°F)
Mean maximum19°C
(66°F)		22°C
(72°F)		25°C
(77°F)		27°C
(81°F)		33°C
(92°F)		35°C
(95°F)		37°C
(98°F)		37°C
(99°F)		35°C
(96°F)		30°C
(87°F)		23°C
(73°F)		19°C
(66°F)
Average high14°C
(58°F)		17°C
(63°F)		18°C
(65°F)		20°C
(68°F)		24°C
(76°F)		26°C
(78°F)		29°C
(84°F)		29°C
(85°F)		28°C
(83°F)		24°C
(75°F)		18°C
(64°F)		16°C
(60°F)
Daily mean10°C
(50°F)		12°C
(54°F)		13°C
(56°F)		15°C
(59°F)		18°C
(65°F)		20°C
(68°F)		22°C
(72°F)		22°C
(72°F)		21°C
(71°F)		18°C
(65°F)		13°C
(56°F)		11°C
(53°F)
Average low6°C
(43°F)		8°C
(47°F)		9°C
(49°F)		11°C
(51°F)		13°C
(56°F)		15°C
(59°F)		17°C
(62°F)		17°C
(63°F)		16°C
(61°F)		13°C
(56°F)		10°C
(50°F)		8°C
(47°F)
Mean minimum-0°C
(31°F)		3°C
(38°F)		5°C
(41°F)		6°C
(43°F)		9°C
(48°F)		12°C
(55°F)		14°C
(57°F)		14°C
(58°F)		13°C
(55°F)		8°C
(47°F)		5°C
(40°F)		2°C
(36°F)
Minimum-3°C
(26°F)		1°C
(33°F)		3°C
(38°F)		5°C
(41°F)		7°C
(45°F)		10°C
(50°F)		13°C
(56°F)		13°C
(56°F)		11°C
(51°F)		6°C
(44°F)		3°C
(38°F)		-2°C
(28°F)

Compare climate in Cartaxo with other places

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

Monthly average precipitation in Cartaxo, Portugal

Cartaxo usually has the most precipitation in March, April and November, with an average of 9 rainy days and 85 mm (3.3 inches) of precipitation per month. The driest months in Cartaxo are June, July and August. On average, 8 mm (0.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Cartaxo. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)38 (1.5)54 (2.1)80 (3.1)86 (3.4)41 (1.6)15 (0.6)3 (0.1)6 (0.2)27 (1.1)55 (2.2)89 (3.5)59 (2.3)
Average precipitation days (≥ 1 mm)57811541135108

Monthly sunshine hours in Cartaxo, Portugal

The sunniest months in Cartaxo are May, June and July, when the sun shines an average of 13 hours 23 minutes a day. Least sunny months in Cartaxo: January, February and December receive an average of 6 hours 39 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Cartaxo. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours177218297346406405419394347310223209
Mean daily daylight hours9h 44m10h 43m11h 58m13h 15m14h 20m14h 52m14h 35m13h 37m12h 24m11h 7m10h 0m9h 26m

Solar UV radiation in Cartaxo, Portugal

Cartaxo 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 Cartaxo UV Index data.

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