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Monthly climate in Castro Daire, Viseu, Portugal

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Castro Daire features a warm-summer Mediterranean climate (Csb).Temperatures typically range between 6 °C (43 °F) and 20 °C (68 °F) through the year, but rarely can drop to -5 °C (23 °F) or can rise to as high as 37 °C (98 °F).The average annual precipitation amounts to about 1201 mm (47.3 inches) and receives 119 rainy days on the 1 mm (0.04 inches) threshold annually.Castro Daire enjoys an average of 3639 hours of sunshine throughout the year, and daylight varies from 9 hours 15 minutes to 15 hours 4 minutes per day.

Monthly average temperatures in Castro Daire, Viseu, Portugal §

The warmest months in Castro Daire are July, August and September, with daily mean temperatures ranging from 18 to 20 °C (65 - 68 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 6 to 8 °C (43 - 47 °F) throughout the day. On average each year, Castro Daire experiences 53 days above 25 °C (77.0 °F) and 16 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Castro Daire, Viseu, Portugal.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 18°C
(65°F)		 21°C
(69°F)		 24°C
(76°F)		 25°C
(78°F)		 30°C
(86°F)		 34°C
(94°F)		 33°C
(92°F)		 37°C
(98°F)		 32°C
(90°F)		 30°C
(87°F)		 19°C
(66°F)		 16°C
(61°F)
Mean maximum 15°C
(59°F)		 18°C
(65°F)		 20°C
(69°F)		 23°C
(74°F)		 28°C
(82°F)		 29°C
(84°F)		 31°C
(89°F)		 33°C
(92°F)		 30°C
(87°F)		 26°C
(79°F)		 18°C
(64°F)		 15°C
(59°F)
Average high 10°C
(51°F)		 13°C
(56°F)		 14°C
(58°F)		 16°C
(62°F)		 20°C
(69°F)		 22°C
(72°F)		 26°C
(78°F)		 26°C
(80°F)		 24°C
(76°F)		 20°C
(68°F)		 13°C
(57°F)		 11°C
(53°F)
Daily mean 6°C
(43°F)		 8°C
(47°F)		 10°C
(49°F)		 12°C
(53°F)		 15°C
(59°F)		 17°C
(63°F)		 20°C
(68°F)		 20°C
(68°F)		 18°C
(65°F)		 14°C
(58°F)		 9°C
(49°F)		 8°C
(46°F)
Average low 2°C
(36°F)		 4°C
(40°F)		 5°C
(42°F)		 7°C
(46°F)		 10°C
(50°F)		 12°C
(54°F)		 14°C
(58°F)		 14°C
(58°F)		 13°C
(56°F)		 10°C
(50°F)		 6°C
(43°F)		 5°C
(41°F)
Mean minimum -3°C
(27°F)		 -1°C
(30°F)		 0°C
(32°F)		 1°C
(35°F)		 4°C
(40°F)		 8°C
(47°F)		 9°C
(48°F)		 9°C
(48°F)		 8°C
(47°F)		 3°C
(38°F)		 1°C
(33°F)		 -0°C
(32°F)
Minimum -5°C
(23°F)		 -4°C
(25°F)		 -1°C
(30°F)		 -0°C
(32°F)		 2°C
(36°F)		 5°C
(41°F)		 7°C
(45°F)		 7°C
(45°F)		 7°C
(44°F)		 -1°C
(31°F)		 -2°C
(29°F)		 -3°C
(27°F)

Compare climate in Castro Daire with other places

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

Monthly average precipitation in Castro Daire, Viseu, Portugal §

Castro Daire usually has the most precipitation in March, April and December, with an average of 13 rainy days and 162 mm (6.4 inches) of precipitation per month.The driest months in Castro Daire are July, August and September. On average, 33 mm (1.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Castro Daire, Viseu, Portugal.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 84 (3.3) 137 (5.4) 153 (6.0) 153 (6.0) 76 (3.0) 57 (2.3) 27 (1.1) 22 (0.9) 51 (2.0) 108 (4.3) 151 (5.9) 182 (7.2)
Average precipitation days (≥ 1 mm) 8 11 12 15 10 11 4 4 7 10 13 14

Monthly sunshine hours in Castro Daire, Viseu, Portugal §

The sunniest months in Castro Daire are May, June and July, when the sun shines an average of 13 hours 24 minutes a day.Least sunny months in Castro Daire: January, November and December receive an average of 5 hours 49 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Castro Daire, Viseu, Portugal.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 155 205 280 339 401 404 428 399 344 300 204 174
Mean daily daylight hours 9h 34m 10h 37m 11h 57m 13h 20m 14h 29m 15h 4m 14h 45m 13h 44m 12h 25m 11h 3m 9h 52m 9h 15m

Solar UV radiation in Castro Daire, Viseu, Portugal §

Castro Daire experiences the highest level of ultraviolet (UV) radiation in April, June and July, when the maximum UV index can reach values of 9 - 11, which corresponds to the Very High / Extreme 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 Castro Daire UV Index data.

Average daily maximum UV levels by month for Castro Daire, Viseu, Portugal.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 3 4 6 9 9 11 10 9 8 6 4 2