Weather in December
The weather in December in Viana do Castelo, Portugal, is distinguished by its winter characteristic. Temperature highs averaging 15.2°C (59.4°F) indicate the oncoming chill of the winter season. It has fewer daylight hours than the month of November, bringing early twilight and a crisp climate. Though milder than January, the cool December weather signals the holidays, giving Viana do Castelo a festive ambience.
Note: Swimming in water with a temperature of 15.4°C (59.7°F) is not a pleasurable experience for the majority. As the temperature falls below 21°C (69.8°F), it becomes increasingly hard to control one's breathing.
On the first day of the month, sunrise is at 07:43 and sunset at 17:05. On the last day of December, sunrise is at 08:02 and sunset at 17:14 WET.
[Resources]Temperature
The start of December in Viana do Castelo marks an average high-temperature of a mild 15.2°C (59.4°F), hardly distinguishable from the conditions in November. Viana do Castelo experiences an average temperature drop to a chilly 6.4°C (43.5°F) during December nights.Sea temperature
In Viana do Castelo, Portugal, the average seawater temperature in December is 15.4°C (59.7°F).Note: Swimming in water with a temperature of 15.4°C (59.7°F) is not a pleasurable experience for the majority. As the temperature falls below 21°C (69.8°F), it becomes increasingly hard to control one's breathing.
Daylight
The month with the shortest days in Viana do Castelo is December, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 07:43 and sunset at 17:05. On the last day of December, sunrise is at 08:02 and sunset at 17:14 WET.
Frequently asked questions
What is the temperature in December in Viana do Castelo?
The average high-temperature and low-temperature in Viana do Castelo during December are 15.2°C (59.4°F) and 6.4°C (43.5°F) respectively.
What is the sea water temperature in December in Viana do Castelo?
In Viana do Castelo, Portugal, the average seawater temperature in December is 15.4°C (59.7°F). Swimming in 15.4°C (59.7°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).
What is the month with the shortest days in Viana do Castelo?
The month with the shortest days in Viana do Castelo is December, with an average of 9h and 12min of daylight.
What is the average length of the day in December in Viana do Castelo?
In December, the average day length in Viana do Castelo is 9h and 13min.
When is the sunrise / sunset in December in Viana do Castelo?
On the first day of December in Viana do Castelo, Portugal, sunrise is at 07:43 and sunset at 17:05. On the last day of the month, sunrise is at 08:02 and sunset at 17:14 WET.
Average temperature in December
Viana do Castelo, Portugal
- Average high temperature in December: 15.2°C
The warmest month (with the highest average high temperature) is August (26.4°C).
The month with the lowest average high temperature is January (14.6°C).
- Average low temperature in December: 6.4°C
The month with the highest average low temperature is July (15.3°C).
The coldest month (with the lowest average low temperature) is January (4.9°C).
Average sea temperature in December
Viana do Castelo, Portugal
- Average sea temperature in December: 15.4°C
The best month for swimming (with the highest average sea temperature) is September (18.3°C).
The coldest months (with the lowest average sea temperature) are February and March (13.8°C).
Average daylight in December
Viana do Castelo, Portugal
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
Viana do Castelo, Portugal
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