Weather in Porto in December 2024
- December is usually the wettest month of the year in Porto;
Average weather
Average temperature in Porto in December
The expected average maximum temperature in December is +14°C with a maximum of +18°C and a minimum of +3°C.
The average maximum temperature goes up 7% by the end of the month, compared with the beginning of the month, from +12°C to +13°C.
Is Porto warm or cold in December?
Porto is typically mild in December.
Maximum temperatures go down compared to the previous month from +16°C to +14°C. The minimum temperature also goes down from +10°C to +8°C.
Pack a light jacket as it will be warm in the day and cool in the evenings.
December is one of the coolest months in Porto, here is the comparison with other months:
Water temperature in Porto in December
Water in Porto in December is Cold. It varies from +14°C to +17°C, with an average of +15°C. Note that the air temperature is lower than the water temperature, averaging around +14°C.
In December, water temperatures are average relative to the rest of the year:
Can you swim in Porto in December?
Climate in Porto in December
| November | December | January | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +16°C | +14°C | +13°C | ||||
| Min. temperature | ||||||
| +1°C | 0°C | -1°C | ||||
| Max. temperature | ||||||
| +24°C | +21°C | +22°C | ||||
| Rainfall | ||||||
| 151 mm | 150 mm | 128 mm | ||||
| Wind | ||||||
| 2 m/s | 3 m/s | 3 m/s | ||||
| Avg. water temperature | ||||||
| +17°C | +15°C | +14°C | ||||
| Humidity | ||||||
| 79% | 79% | 78% | ||||
| Air pressure | ||||||
| 1017 HPa | 1020 HPa | 1021 HPa | ||||
| Sunny days | ||||||
| 9 | 10 | 11 | ||||
| Cloudy days | ||||||
| 5 | 5 | 6 | ||||
| Rainy days | ||||||
| 15 | 15 | 14 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
December weather is still as ok as in November. It’s getting colder in December. From +16°C in the day, the average maximum temperature lowers to +14°C. As December arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 151 mm to 150 mm. Humidity levels don’t change as the month goes on, averaging around 79%. Winds are stronger in comparison to November, going up from 2 m/s to 3 m/s on average. The good news is there are likely to be more sunny days in December, from 9 to 10.
January brings much the same weather, it remains ok.
Wind
The average wind speed is 4 m/s getting up to 7 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Porto is gradually increasing during December, going from 2 m/s to 3 m/s over the course of the month.
Rain
How was the weather last December in Porto?
Climate Change over Years
The climate in Porto in December has not changed much over the last 43 years.
The average temperature was the lowest in 1979 (+17°C) and the highest in 2022 (+20°C). The driest year was 2007 with only 565 mm of rainfall, and the wettest year was 2022 with 1854 mm.
FAQ
Is December a good time to visit Porto?
Can you sunbathe in Porto in December?
Can you swim in Porto in December?
Is Porto rainy in December?
Is it sunny in Porto in December?
Other cities in Portugal
Monthly weather in Porto
Source of the data
For this page, we’ve looked at the typical weather in Porto, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.