Olhão 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 Olhão in December?
In December, Olhão is mild: daytime highs average 16 °C, and nights cool down to about 12 °C. The sea averages 17.6 °C – bracing, so a wetsuit helps for longer swims. Expect around 5 hours of sunshine a day. Rain falls on about 7 days, adding up to 64 mm. All in all, December is not an ideal month for a holiday in Olhão.
December compared
How the weather changes from November to January. Tap a month to open it.
| NovemberNov | DecemberDec | JanuaryJan | |
|---|---|---|---|
| Score | 35 | 26 | 26 |
| Day | 18° | 16° | 15° |
| Night | 14° | 12° | 11° |
| Sea | 19° | 18° | 17° |
| Sun | 6 h | 5 h | 6 h |
| Rain days | 7 | 7 | 6 |
More details for December
- Daylight
- 9 h 39 min07:37 – 17:16
- UV index
- 2 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 17 km/haverage daily peakAll months
- Cloud cover
- 50 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Time zone
- UTC+0Europe/Lisbon
How the score comes together
- Temperatureweight 35 %0 %
- Seaweight 25 %9 %
- Sunshineweight 20 %40 %
- Few rainy daysweight 20 %81 %
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
Olhão in December: quick answers
Is Olhão hot in December?
No. In December, Olhão is mild: daytime highs average 16 °C and nights drop to about 12 °C.
Can you swim in Olhão in December?
Only if you don't mind cold water: in December the sea averages just 17.6 °C. Comfortable swimming is possible from July to October.
Does it rain much in Olhão in December?
Rain falls on about 7 days, adding up to 64 mm.
Olhão month by month
The whole year in OlhãoAll 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). Sources & licences