Weather in Cascais for December 2026
In general, the average temperature in Cascais at the beginning of December is 16.4 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 15 °C by the end of December.
Cascais in December brings notable rainfall, with an average of 17 rainy days and a total precipitation of 66 mm.
Is December a good time to visit Cascais? check out the best time to travel to Cascais page.
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Cascais Weather December
Temperatures trend during December in Cascais
December weather in Cascais day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Dec. |  Light rain shower | 17° /13° | 0.9 mm | 4 | |
| 2 Dec. | Patchy rain possible | 16° /12° | 3.3 mm | 4 | |
| 3 Dec. | Patchy rain possible | 16° /13° | 0.9 mm | 4 | |
| 4 Dec. | Patchy rain possible | 17° /14° | 2.5 mm | 4 | |
| 5 Dec. |  Light rain | 16° /13° | 3.2 mm | 4 | |
| 6 Dec. | Patchy rain possible | 16° /13° | 0.1 mm | 4 | |
| 7 Dec. | Light rain shower | 17° /14° | 2.1 mm | 4 | |
| 8 Dec. | Patchy rain possible | 16° /13° | 0.1 mm | 4 | |
| 9 Dec. | Patchy rain possible | 16° /13° | 8.4 mm | 4 | |
| 10 Dec. | Patchy rain possible | 15° /12° | 0.2 mm | 4 | |
| 11 Dec. | Patchy rain possible | 15° /11° | 0.4 mm | 4 | |
| 12 Dec. | Patchy rain possible | 15° /11° | 9.2 mm | 4 | |
| 13 Dec. | Patchy rain possible | 16° /11° | 2.9 mm | 4 | |
| 14 Dec. |  Sunny | 15° /11° | 1.7 mm | 4 | |
| 15 Dec. |  Cloudy | 15° /10° | 3.6 mm | 4 | |
| 16 Dec. | Sunny | 15° /10° | 3.9 mm | 4 | |
| 17 Dec. | Sunny | 16° /11° | 0 mm | 4 | |
| 18 Dec. | Sunny | 16° /12° | 1.3 mm | 4 | |
| 19 Dec. | Sunny | 15° /11° | 4.1 mm | 4 | |
| 20 Dec. | Patchy rain possible | 15° /11° | 1.3 mm | 3 | |
| 21 Dec. | Sunny | 14° /10° | 2.6 mm | 3 | |
| 22 Dec. | Sunny | 16° /11° | 1.2 mm | 4 | |
| 23 Dec. | Sunny | 16° /12° | 0.8 mm | 4 | |
| 24 Dec. | Patchy rain possible | 15° /10° | 0.4 mm | 4 | |
| 25 Dec. |  Partly cloudy | 15° /11° | 4.6 mm | 3 | |
| 26 Dec. |  Moderate rain at times | 15° /11° | 0.9 mm | 4 | |
| 27 Dec. | Sunny | 15° /11° | 3.7 mm | 3 | |
| 28 Dec. | Cloudy | 15° /11° | 0.6 mm | 3 | |
| 29 Dec. | Patchy rain possible | 15° /12° | 0.8 mm | 3 | |
| 30 Dec. | Sunny | 15° /11° | 0.1 mm | 4 | |
| 31 Dec. | Sunny | 15° /11° | 0.3 mm | 3 | |
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Cascais weather in December vs November vs January
| November | December | January | |
|---|---|---|---|
| Weather | Patchy rain possible | Patchy rain possible | Patchy rain possible |
| Temperatures | 18°/15° | 15°/12° | 15°/11° |
| Rainfall | 90 mm | 66 mm | 111 mm |
| Wind | 26.9 km/h | 27 km/h | 30.9 km/h |
| Humidity | 74% | 72% | 75% |
| Rainy days | 18 days | 17 days | 25 days |
| Dry days | 12 days | 14 days | 6 days |
Planning a trip to Cascais? Discover the best time to visit
Cascais in December - FAQ
What are the expected maximum and minimum temperatures in Cascais during December?
How much rainfall should be expected in Cascais during December?
What are the typical wind conditions in Cascais during December?
December rainfall patterns in Cascais
What to pack to Cascais in December?
Mild · highs around 15 °C, frequent showers
As you prepare for your trip to Cascais 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 Cascais, during December, is comfortable and enjoyable, regardless of the weather conditions.
🧥 Clothing
👟 Footwear
🎒 Accessories
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Where is Cascais?Get accurate weather forecasts for Cascais, located at latitude 38.697 and longitude -9.421. Stay updated with localized weather information tailored for Cascais.