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Monthly climate in Cacilhas, Portugal

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Cacilhas features a hot-summer Mediterranean climate (Csa). Temperatures typically range between 12 °C (53 °F) and 20 °C (69 °F) through the year, but rarely can drop to 3 °C (38 °F) or can rise to as high as 35 °C (95 °F). The average annual precipitation amounts to about 498 mm (19.6 inches) and receives 65 rainy days on the 1 mm (0.04 inches) threshold annually. Cacilhas enjoys an average of 3826 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 Cacilhas, Portugal

The warmest months in Cacilhas are July, August and September, with daily mean temperatures ranging from 20 to 20 °C (68 - 69 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 12 to 13 °C (53 - 56 °F) throughout the day. On average each year, Cacilhas experiences 27 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 Cacilhas. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum19°C
(66°F)		21°C
(70°F)		23°C
(73°F)		24°C
(75°F)		30°C
(86°F)		32°C
(90°F)		31°C
(87°F)		35°C
(95°F)		29°C
(84°F)		28°C
(82°F)		23°C
(73°F)		18°C
(65°F)
Mean maximum17°C
(63°F)		19°C
(66°F)		21°C
(70°F)		22°C
(71°F)		26°C
(79°F)		27°C
(81°F)		28°C
(83°F)		29°C
(84°F)		28°C
(82°F)		25°C
(78°F)		21°C
(69°F)		18°C
(64°F)
Average high14°C
(57°F)		15°C
(60°F)		16°C
(61°F)		17°C
(63°F)		20°C
(69°F)		21°C
(71°F)		23°C
(74°F)		24°C
(76°F)		24°C
(75°F)		21°C
(71°F)		17°C
(63°F)		15°C
(60°F)
Daily mean12°C
(53°F)		13°C
(55°F)		14°C
(57°F)		15°C
(59°F)		17°C
(63°F)		18°C
(66°F)		20°C
(68°F)		20°C
(69°F)		20°C
(68°F)		18°C
(65°F)		15°C
(59°F)		13°C
(56°F)
Average low9°C
(49°F)		11°C
(51°F)		11°C
(52°F)		12°C
(55°F)		15°C
(59°F)		16°C
(61°F)		17°C
(64°F)		18°C
(64°F)		17°C
(64°F)		16°C
(61°F)		13°C
(55°F)		11°C
(52°F)
Mean minimum5°C
(42°F)		8°C
(46°F)		8°C
(47°F)		9°C
(49°F)		11°C
(53°F)		15°C
(58°F)		16°C
(60°F)		16°C
(61°F)		15°C
(60°F)		12°C
(54°F)		10°C
(49°F)		8°C
(46°F)
Minimum3°C
(38°F)		5°C
(41°F)		7°C
(45°F)		8°C
(46°F)		10°C
(50°F)		13°C
(56°F)		15°C
(59°F)		16°C
(61°F)		14°C
(58°F)		10°C
(50°F)		9°C
(48°F)		6°C
(43°F)

Compare climate in Cacilhas with other places

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

Monthly average precipitation in Cacilhas, Portugal

Cacilhas usually has the most precipitation in March, April and November, with an average of 10 rainy days and 73 mm (2.9 inches) of precipitation per month. The driest months in Cacilhas are June, July and August. On average, 6 mm (0.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Cacilhas. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)37 (1.5)53 (2.1)66 (2.6)73 (2.9)36 (1.4)11 (0.4)5 (0.2)3 (0.1)27 (1.1)46 (1.8)80 (3.2)62 (2.4)
Average precipitation days (≥ 1 mm)57812430025118

Monthly sunshine hours in Cacilhas, Portugal

The sunniest months in Cacilhas are May, June and July, when the sun shines an average of 13 hours 29 minutes a day. Least sunny months in Cacilhas: January, February and December receive an average of 6 hours 57 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Cacilhas. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours181228306353407411422396349313233221
Mean daily daylight hours9h 47m10h 44m11h 58m13h 13m14h 17m14h 48m14h 31m13h 35m12h 23m11h 8m10h 3m9h 29m

Solar UV radiation in Cacilhas, Portugal

Cacilhas 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 Cacilhas UV Index data.

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