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Monthly climate in Sesimbra, Portugal

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Sesimbra features a hot-summer Mediterranean climate (Csa). Temperatures typically range between 12 °C (54 °F) and 21 °C (71 °F) through the year, but rarely can drop to 4 °C (40 °F) or can rise to as high as 34 °C (94 °F). The average annual precipitation amounts to about 441 mm (17.4 inches) and receives 58 rainy days on the 1 mm (0.04 inches) threshold annually. Sesimbra enjoys an average of 3852 hours of sunshine throughout the year, and daylight varies from 9 hours 30 minutes to 14 hours 48 minutes per day.

Monthly average temperatures in Sesimbra, Portugal

The warmest months in Sesimbra are July, August and September, with daily mean temperatures ranging from 21 to 21 °C (69 - 71 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 12 to 14 °C (54 - 57 °F) throughout the day. On average each year, Sesimbra experiences 40 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 Sesimbra. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum20°C
(68°F)		21°C
(71°F)		24°C
(75°F)		24°C
(76°F)		31°C
(87°F)		31°C
(89°F)		31°C
(88°F)		34°C
(94°F)		30°C
(86°F)		28°C
(83°F)		23°C
(73°F)		18°C
(66°F)
Mean maximum18°C
(64°F)		19°C
(67°F)		22°C
(71°F)		22°C
(72°F)		27°C
(80°F)		27°C
(81°F)		29°C
(84°F)		30°C
(86°F)		28°C
(83°F)		26°C
(80°F)		21°C
(70°F)		18°C
(65°F)
Average high15°C
(58°F)		16°C
(61°F)		17°C
(62°F)		18°C
(64°F)		21°C
(70°F)		22°C
(72°F)		24°C
(76°F)		25°C
(78°F)		24°C
(76°F)		22°C
(71°F)		17°C
(64°F)		16°C
(61°F)
Daily mean12°C
(54°F)		13°C
(56°F)		14°C
(58°F)		15°C
(60°F)		18°C
(64°F)		19°C
(67°F)		21°C
(70°F)		21°C
(71°F)		21°C
(69°F)		19°C
(66°F)		15°C
(60°F)		14°C
(57°F)
Average low10°C
(50°F)		11°C
(52°F)		12°C
(53°F)		13°C
(55°F)		15°C
(59°F)		16°C
(62°F)		18°C
(64°F)		18°C
(65°F)		18°C
(64°F)		16°C
(61°F)		13°C
(56°F)		12°C
(53°F)
Mean minimum6°C
(43°F)		8°C
(46°F)		8°C
(47°F)		10°C
(50°F)		12°C
(53°F)		15°C
(59°F)		16°C
(61°F)		16°C
(62°F)		15°C
(60°F)		12°C
(54°F)		10°C
(50°F)		8°C
(47°F)
Minimum4°C
(40°F)		5°C
(42°F)		7°C
(45°F)		9°C
(48°F)		10°C
(50°F)		13°C
(55°F)		15°C
(59°F)		16°C
(61°F)		14°C
(57°F)		10°C
(50°F)		8°C
(47°F)		6°C
(43°F)

Compare climate in Sesimbra with other places

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

Monthly average precipitation in Sesimbra, Portugal

Sesimbra usually has the most precipitation in March, April and November, with an average of 9 rainy days and 66 mm (2.6 inches) of precipitation per month. The driest months in Sesimbra are June, July and August. On average, 5 mm (0.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Sesimbra. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)34 (1.3)53 (2.1)66 (2.6)63 (2.5)31 (1.2)8 (0.3)4 (0.2)3 (0.1)18 (0.7)39 (1.5)69 (2.7)54 (2.1)
Average precipitation days (≥ 1 mm)4681142102497

Monthly sunshine hours in Sesimbra, Portugal

The sunniest months in Sesimbra are May, June and July, when the sun shines an average of 13 hours 30 minutes a day. Least sunny months in Sesimbra: January, February and December receive an average of 7 hours 6 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Sesimbra. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours186233308355408411422395350315236227
Mean daily daylight hours9h 48m10h 45m11h 58m13h 13m14h 16m14h 48m14h 31m13h 35m12h 23m11h 8m10h 3m9h 30m

Solar UV radiation in Sesimbra, Portugal

Sesimbra 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 Sesimbra UV Index data.

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