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PortugalThe weather in December in Porto
It's cool in December in Porto with an average temperature of 14°C. Temperatures this month range from a low of 13°C to a high of 15°C. At night, you can expect temperatures between 7°C and 10°C.
Looking for sun? December isn’t a good month to be in Porto. There’s too much chance of rain this month.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in December for Porto, Portugal. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 21°C in 2021, Porto reached the highest temperature in December over the past 10 years. The lowest daytime temperature in this month was 7°C in 2023. The extreme nighttime temperatures ranged from a lowest recorded value of 0°C to a highest value of 16°C.
Water temperature
The water temperature at Porto is 17°C this month. You can swim, but it's a bit chilly.
Rainfall amount
In December, there is an average of 195 mm of precipitation, spread over 22 days. The wind speed is around 3 Bft, mostly coming from the Southwest.
Daily weather in December for Porto
Click on any day in December to get detailed info about the usual weather on that day in Porto. Check out the historical temperatures and precipitation over the past 10 years on this day.
December weather comparison
| Porto | New York | |
|---|---|---|
| Average temperature | 14°C | 9°C |
| Max. temperature | 15°C | 12°C |
| Min. temperature | 7°C | -5°C |
| Total precipitation | 195 mm | 133 mm |
| Rainy days | 22 days | 17 days |
Start of December
The month of December starts in Porto with cool temps, averaging around 15°C during the day and nights around 8°C.
Mid December
By mid-December, daytime temps stay steady at around 15°C, with nights around 9°C. There’s a high chance of precipitation during this time.
End of December
By the end of December, the average daytime temperature in Porto is around 15°C, while nighttime temps are about 9°C. There’s a significant chance of many days with precipitation.
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UV index
The UV index is a maximum of 3 this month. That's a moderate value on the intensity scale of 1 to 11. Unprotected skin can burn in about 30 minutes.
Check out the climate of Porto for all months and discover the best travel time
Curious about the weather in other parts of Portugal? Check out the climate and weather for spots like Algarve, Lisbon, Albufeira, or explore other destinations in Portugal.
Temperature charts
These charts show the average temperatures in December in Porto, Portugal. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in December in Porto
Temperature in December in Porto over the years
Precipitation charts
These charts show the average amount of precipitation in December in Porto, Portugal. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in December in Porto
Total precipitation in December in Porto over the years
Daily UV index in December in Porto
This chart shows the average daily UV index in December in Porto, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in December in Porto
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Average weather in Porto by month
Click on a month below to see detailed weather info for Porto. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.