Temperatures in December
It's cool to moderate in December in Leiria with an average temperature of 16°C. Temperatures this month range from a low of 16°C to a high of 17°C. At night, you can expect temperatures between 7°C and 11°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Leiria in December. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of December
The month of December starts in Leiria with cool temperatures, averaging around 17°C during the day and nights close to 9°C. A few showers might pop up in the first days of the month, but the weather remains mostly sunny and dry.
Mid-December
By mid-December, the average daytime temperature stays the same at 17°C, with nights close to 9°C. During this part of the month, you can expect regular precipitation, but there’ll also be some sunny days.
End of December
By the end of December, the average daytime temperature in Leiria will be around 17°C, with nights close to 9°C. A shower might show up, but overall the weather will be dry and sunny.
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Precipitation in December
In December, there is an average of 96 mm of precipitation, spread over 11 days. The wind speed is around 4 Bft, mostly coming from the South.
The average precipitation chance is 36% per day this month. The weather’s variable. Some days have higher and others lower precipitation chances, which lowers the average.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in December for Leiria. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
Leiria in December |
London | ||
|---|---|---|---|
 Average Temperature |
16°C | 9°C | |
 High Temp |
17°C | 11°C | |
| Low Temp |
16°C | 8°C | |
 Total Precipitation |
96 mm | 67 mm | |
| Rainy Days |
11 days | 10 days | |
November
UV index
The UV index is a maximum of 4 this month. That's a moderate value on the intensity scale of 1 to 11. Unprotected skin can burn in about 30 minutes.
Is December a good time to visit Leiria?
Looking for sun and warm weather? Then December isn’t the best time to be in Leiria. The temperature is too low this month for a warm stay.
Temperature records for Leiria in December
With 21°C, Leiria hit the highest temperature in the last 10 years in December 2015. The lowest daytime temperature in this month was 10°C in 2023. The extreme night temperatures ranged from a low of -1°C to a high of 16°C.
Check out the climate of Leiria for all months and discover the best travel time
Curious about the climate in other parts of Portugal? Check out the weather and climate in places like Algarve, Lisbon, Albufeira, or have a look at other destinations in Portugal.
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Daily Temperature in December in Leiria
This chart shows the average daily temperatures, both day and night, for each day in December in Leiria, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in December in Leiria
The chart below shows the average daily precipitation in December for Leiria, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for December, you can expect around 11 days of rain in Leiria.
Daily UV Index in December in Leiria
This chart shows the average daily UV index in December in Leiria, 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.
Temperature in December in Leiria Over the Years
This chart shows the average temperature in December in Leiria, measured in degrees Celsius, over the past years.
Total Precipitation in December in Leiria Over the Years
This chart shows the average precipitation in December in Leiria, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in December for Leiria
Click on a specific day in December for detailed info on the typical weather on that day in Leiria. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in December in Leiria
Have you been to Leiria in December?
Share your weather experience in December in Leiria.
Average Weather in Leiria by Month
Click on a month below to see detailed weather info for Leiria. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
