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Monthly climate in Vairao, Portugal

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Vairao features a warm-summer Mediterranean climate (Csb). Temperatures typically range between 11 °C (52 °F) and 20 °C (68 °F) through the year, but rarely can drop to 3 °C (38 °F) or can rise to as high as 30 °C (87 °F). The average annual precipitation amounts to about 1041 mm (41.0 inches) and receives 110 rainy days on the 1 mm (0.04 inches) threshold annually. Vairao enjoys an average of 3691 hours of sunshine throughout the year, and daylight varies from 9 hours 14 minutes to 15 hours 4 minutes per day.

Monthly average temperatures in Vairao, Portugal

The warmest months in Vairao are July, August and September, with daily mean temperatures ranging from 19 to 20 °C (67 - 68 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 11 to 12 °C (52 - 54 °F) throughout the day. On average each year, Vairao experiences 14 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 Vairao. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum19°C
(67°F)		20°C
(68°F)		23°C
(74°F)		25°C
(78°F)		28°C
(82°F)		28°C
(83°F)		29°C
(85°F)		30°C
(87°F)		30°C
(86°F)		27°C
(81°F)		20°C
(68°F)		18°C
(64°F)
Mean maximum16°C
(61°F)		18°C
(65°F)		19°C
(67°F)		22°C
(71°F)		24°C
(76°F)		25°C
(77°F)		27°C
(82°F)		28°C
(83°F)		27°C
(82°F)		24°C
(76°F)		19°C
(67°F)		17°C
(63°F)
Average high13°C
(56°F)		14°C
(58°F)		15°C
(59°F)		17°C
(62°F)		19°C
(67°F)		20°C
(68°F)		22°C
(72°F)		22°C
(73°F)		22°C
(72°F)		20°C
(67°F)		16°C
(61°F)		14°C
(58°F)
Daily mean11°C
(52°F)		12°C
(54°F)		13°C
(55°F)		14°C
(58°F)		17°C
(63°F)		18°C
(65°F)		20°C
(68°F)		20°C
(68°F)		19°C
(67°F)		17°C
(63°F)		14°C
(57°F)		12°C
(54°F)
Average low8°C
(47°F)		10°C
(50°F)		10°C
(51°F)		12°C
(54°F)		15°C
(58°F)		16°C
(61°F)		18°C
(64°F)		18°C
(64°F)		17°C
(63°F)		15°C
(59°F)		12°C
(53°F)		10°C
(51°F)
Mean minimum4°C
(40°F)		6°C
(43°F)		7°C
(45°F)		8°C
(47°F)		11°C
(52°F)		14°C
(57°F)		15°C
(59°F)		15°C
(59°F)		14°C
(58°F)		11°C
(52°F)		8°C
(47°F)		6°C
(44°F)
Minimum3°C
(38°F)		4°C
(40°F)		5°C
(42°F)		7°C
(45°F)		9°C
(48°F)		12°C
(54°F)		14°C
(57°F)		14°C
(58°F)		13°C
(55°F)		9°C
(48°F)		8°C
(46°F)		5°C
(42°F)

Compare climate in Vairao with other places

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

Monthly average precipitation in Vairao, Portugal

Vairao usually has the most precipitation in April, November and December, with an average of 13 rainy days and 145 mm (5.7 inches) of precipitation per month. The driest months in Vairao are July, August and September. On average, 22 mm (0.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Vairao. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)81 (3.2)114 (4.5)121 (4.7)130 (5.1)71 (2.8)40 (1.6)18 (0.7)17 (0.7)33 (1.3)111 (4.4)144 (5.7)161 (6.3)
Average precipitation days (≥ 1 mm)911111288336101415

Monthly sunshine hours in Vairao, Portugal

The sunniest months in Vairao are May, June and July, when the sun shines an average of 13 hours 27 minutes a day. Least sunny months in Vairao: January, November and December receive an average of 6 hours 3 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Vairao. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours161212291348405406425394346302209187
Mean daily daylight hours9h 34m10h 37m11h 57m13h 20m14h 29m15h 4m14h 46m13h 44m12h 25m11h 3m9h 51m9h 14m

Solar UV radiation in Vairao, Portugal

Vairao experiences the highest level of ultraviolet (UV) radiation in May, June and August, when the maximum UV index can reach values of 9 - 10, which corresponds to the Very High category of sun exposure. January, February and December are in the Low / 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 Vairao UV Index data.

Average daily maximum UV levels by month for Vairao. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)2468910998642