Portimão, Algarve weather in December
Temperature, sea and sunshine in December: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in December
Poor
Best time to visit: June – September
What is the weather like in Portimão, Algarve in December?
In December, Portimão, Algarve is mild: daytime highs average 16 °C, and nights cool down to about 10 °C. The sea averages 16.9 °C – swimming is only for the hardy. Expect around 6 hours of sunshine a day. Rain falls on about 9 days, adding up to 74 mm. All in all, December is not an ideal month for a holiday in Portimão, Algarve.
December compared
How the weather changes from November to January. Tap a month to open it.
| NovemberNov | DecemberDec | JanuaryJan | |
|---|---|---|---|
| Score | 30 | 23 | 26 |
| Day | 19° | 16° | 16° |
| Night | 12° | 10° | 9° |
| Sea | 18° | 17° | 16° |
| Sun | 7 h | 6 h | 6 h |
| Rain days | 9 | 9 | 8 |
More details for December
- Daylight
- 9 h 38 min07:40 – 17:18
- UV index
- 2 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or more
- Wind
- 21 km/haverage daily peak
- Cloud cover
- 53 %on average
- Hot days
- 0 days30 °C or more
- Time zone
- UTC+0Europe/Lisbon
How the score comes together
- Temperatureweight 35 %0 %
- Seaweight 25 %0 %
- Sunshineweight 20 %47 %
- Few rainy daysweight 20 %68 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in December
- A jumper for the evenings
- Rain jacket or umbrella
Portimão, Algarve in December: quick answers
Is Portimão, Algarve hot in December?
No. In December, Portimão, Algarve is mild: daytime highs average 16 °C and nights drop to about 10 °C.
Can you swim in Portimão, Algarve in December?
Only if you don't mind cold water: in December the sea averages just 16.9 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Portimão, Algarve in December?
Rain falls on about 9 days, adding up to 74 mm.
Portimão, Algarve month by month
The whole year in Portimão, AlgarveAll destinations: PortugalAlgarve weather in DecemberWhere to go in DecemberSea temperature in December
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0)