Weather in Lisbon for December 2025
Orange Maritime Agitation Warning - See hour by hour.
Until now, December 2025 in Lisbon is slightly cooler than the historical average by -1.1 °C.
Expect cooler weather in the next days in Lisbon with the forecast suggesting a temperature of 13.8 °C, lower than the historical average.
In general, the average temperature in Lisbon at the beginning of December is 16.4 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 14 °C by the end of December.
Lisbon in December brings notable rainfall, with an average of 18 rainy days and a total precipitation of 78.1 mm.
Is December a good time to visit Lisbon? check out the best time to travel to Lisbon page.
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Lisbon Weather December
What’s the Weather Like in Lisbon This December?
Temperatures trend during December in Lisbon
December weather in Lisbon day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Dec. |  Patchy rain possible | 16° /10° | 0.3 mm | 4 | |
| 2 Dec. |  Moderate rain at times | 16° /10° | 1.8 mm | 4 | |
| 3 Dec. |  Sunny | 16° /9° | 0.8 mm | 4 | |
| 4 Dec. | Patchy rain possible | 17° /11° | 3.9 mm | 4 | |
| 5 Dec. | Patchy rain possible | 16° /11° | 2.6 mm | 4 | |
| 6 Dec. | Patchy rain possible | 17° /12° | 0.1 mm | 4 | |
| 7 Dec. | Patchy rain possible | 17° /12° | 6.4 mm | 4 | |
| 8 Dec. | Patchy rain possible | 16° /12° | 4.6 mm | 4 | |
| 9 Dec. | Patchy rain possible | 17° /12° | 8.1 mm | 4 | |
| 10 Dec. |  Partly cloudy | 16° /11° | 1 mm | 4 | |
| 11 Dec. | Patchy rain possible | 16° /11° | 3.2 mm | 4 | |
| 12 Dec. | Sunny | 17° /11° | 7.4 mm | 4 | |
| 13 Dec. | Patchy rain possible | 16° /11° | 4.7 mm | 4 | |
| 14 Dec. |  Overcast | 16° /11° | 3.3 mm | 4 | |
| 15 Dec. | Partly cloudy | 16° /9° | 0.4 mm | 5 | |
| 16 Dec. |  Moderate rain | 14° /11° | 5 mm | 0.3 | |
| 17 Dec. | Sunny | 15° /11° | 0 mm | 0.3 | |
| 18 Dec. | Patchy rain possible | 15° /10° | 1.3 mm | 0.3 | |
| 19 Dec. |  Heavy rain | 15° /12° | 26.1 mm | 0.3 | |
| 20 Dec. | Patchy rain possible | 14° /12° | 0.2 mm | 0.2 | |
| 21 Dec. | Patchy rain possible | 12° /10° | 0.6 mm | 3 | |
| 22 Dec. | Patchy rain possible | 14° /10° | 0.5 mm | 3 | |
| 23 Dec. | Patchy rain possible | 14° /11° | 0.7 mm | 3 | |
| 24 Dec. | Patchy rain possible | 13° /9° | 0.1 mm | 3 | |
| 25 Dec. | Patchy rain possible | 13° /11° | 0.3 mm | 3 | |
| 26 Dec. | Patchy rain possible | 12° /9° | 0.6 mm | 3 | |
| 27 Dec. | Moderate rain | 14° /11° | 11 mm | 3 | |
| 28 Dec. | Patchy rain possible | 14° /11° | 1.9 mm | 3 | |
| 29 Dec. | Patchy rain possible | 14° /9° | 0.4 mm | 3 | |
| 30 Dec. | Sunny | 15° /9° | 0 mm | 4 | |
| 31 Dec. | Sunny | 16° /10° | 0.2 mm | 4 | |
| Next | |||||
Lisbon weather in December vs November vs January
| November | December | January | |
|---|---|---|---|
| Weather | Patchy rain possible | Patchy rain possible | Patchy rain possible |
| Temperatures | 19°/13° | 16°/11° | 15°/9° |
| Rainfall | 37 mm | 78 mm | 61 mm |
| Wind | 18.3 km/h | 19.5 km/h | 19.6 km/h |
| Humidity | 71% | 75% | 74% |
| Rainy days | 12 days | 18 days | 19 days |
| Dry days | 18 days | 13 days | 12 days |
Planning a trip to Lisbon? Discover the best time to visit
Lisbon in December - FAQ
Lisbon water temperatures in December
The average water temperature of the Atlantic Ocean near Lisbon in December is 15.3 °C. Temperatures remain fairly consistent throughout the month.
- What is the water temperature in Lisbon in December?
- The average water temperature in Lisbon in December is 15.3 °C.
- Can you swim in Lisbon in December?
- Brisk: quick dips and active swimming are fine, but pack a 2–3 mm spring suit if you plan longer sessions or early-morning outings.
What to pack to Lisbon in December?
As you prepare for your trip to Lisbon 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 Lisbon, during December, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Warm Clothing: Sweaters, hoodies, long pants
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Scarves: To protect you from the cold wind
- Gloves/Mittens: Essential for cold weather
- Warm Hats: Warm hats for insulation in cold weather
- Umbrellas/Raincoats: For rainy days
December rainfall patterns in Lisbon
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