Weather in Viana do Castelo for December 2026
In general, the average temperature in Viana do Castelo at the beginning of December is 14.1 °C. As the month progressed, temperatures tended to slightly decrease, reaching an average of 13.7 °C by the end of December.
Viana do Castelo experiences heavy rainfall in December, with over 20 rainy days and an average total precipitation 196.8 mm.
Is December a good time to visit Viana do Castelo? check out the best time to travel to Viana do Castelo page.
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Viana do Castelo Weather December
Temperatures trend during December in Viana do Castelo
December weather in Viana do Castelo day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Dec. |  Light rain shower | 14° /9° | 7.5 mm | 3 | |
| 2 Dec. |  Partly cloudy | 14° /8° | 5.6 mm | 4 | |
| 3 Dec. |  Light rain | 13° /7° | 10.9 mm | 3 | |
| 4 Dec. | Patchy rain possible | 14° /10° | 2.3 mm | 3 | |
| 5 Dec. |  Overcast | 14° /9° | 4.3 mm | 4 | |
| 6 Dec. |  Cloudy | 15° /10° | 10 mm | 4 | |
| 7 Dec. | Patchy rain possible | 15° /10° | 24.4 mm | 4 | |
| 8 Dec. | Patchy rain possible | 14° /10° | 1.5 mm | 3 | |
| 9 Dec. | Light rain shower | 15° /10° | 9.8 mm | 4 | |
| 10 Dec. | Light rain shower | 14° /10° | 0.9 mm | 4 | |
| 11 Dec. | Light rain shower | 13° /9° | 3.2 mm | 4 | |
| 12 Dec. |  Moderate rain | 13° /9° | 15.1 mm | 3 | |
| 13 Dec. | Light rain shower | 13° /8° | 2.9 mm | 4 | |
| 14 Dec. |  Sunny | 14° /8° | 0.1 mm | 4 | |
| 15 Dec. | Sunny | 14° /8° | 5.9 mm | 4 | |
| 16 Dec. | Sunny | 14° /7° | 0.3 mm | 4 | |
| 17 Dec. | Sunny | 14° /7° | 0.7 mm | 4 | |
| 18 Dec. | Sunny | 14° /10° | 17.5 mm | 4 | |
| 19 Dec. | Sunny | 13° /7° | 3.3 mm | 4 | |
| 20 Dec. | Patchy rain possible | 12° /6° | 6 mm | 2 | |
| 21 Dec. | Partly cloudy | 12° /7° | 4.2 mm | 3 | |
| 22 Dec. |  Heavy rain at times | 15° /9° | 4.9 mm | 4 | |
| 23 Dec. | Sunny | 14° /9° | 3.1 mm | 3 | |
| 24 Dec. | Sunny | 14° /8° | 7.4 mm | 3 | |
| 25 Dec. | Partly cloudy | 14° /8° | 11.6 mm | 3 | |
| 26 Dec. |  Moderate rain at times | 13° /7° | 0.9 mm | 3 | |
| 27 Dec. | Sunny | 14° /7° | 0 mm | 3 | |
| 28 Dec. | Moderate rain at times | 14° /9° | 7.1 mm | 3 | |
| 29 Dec. | Partly cloudy | 13° /9° | 9.6 mm | 3 | |
| 30 Dec. | Moderate or heavy rain shower | 14° /9° | 7.1 mm | 3 | |
| 31 Dec. | Sunny | 14° /8° | 8.5 mm | 3 | |
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Viana do Castelo weather in December vs November vs January
| November | December | January | |
|---|---|---|---|
| Weather | Patchy rain possible | Patchy rain possible | Patchy rain possible |
| Temperatures | 16°/12° | 13°/9° | 13°/8° |
| Rainfall | 238 mm | 197 mm | 249 mm |
| Wind | 21.8 km/h | 20.8 km/h | 24.8 km/h |
| Humidity | 80% | 79% | 79% |
| Rainy days | 24 days | 26 days | 31 days |
| Dry days | 6 days | 5 days | 0 days |
Planning a trip to Viana do Castelo? Discover the best time to visit
Viana do Castelo in December - FAQ
What are the expected maximum and minimum temperatures in Viana do Castelo during December?
How much rainfall should be expected in Viana do Castelo during December?
What are the typical wind conditions in Viana do Castelo during December?
December rainfall patterns in Viana do Castelo
What to pack to Viana do Castelo in December?
Mild · highs around 13 °C, frequent showers
As you prepare for your trip to Viana do Castelo in December, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Viana do Castelo, during December, is comfortable and enjoyable, regardless of the weather conditions.
🧥 Clothing
👟 Footwear
🎒 Accessories
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Where is Viana do Castelo?Get accurate weather forecasts for Viana do Castelo, located at latitude 41.693 and longitude -8.833. Stay updated with localized weather information tailored for Viana do Castelo.