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December Weather in San Juan del Puerto, Spain

Last updated: August 27, 2025

In San Juan del Puerto, Spain, the average temperature in December sits at a mild 13°C (55°F). Expect temperatures to range from a cool 2°C (36°F) to a warm 23°C (74°F). During this time, precipitation averages about 45 mm (1.8 in) over 5 days, with an average humidity of 81%.

December Temperature in San Juan del Puerto

In December in San Juan del Puerto, the average temperature is 13°C (55°F), with maximums capable of reaching 23°C (74°F) and minimums dropping as low as 2°C (36°F). This comfortable range makes it an ideal time for travelers to explore the area and enjoy outdoor activities.

December Weather in San Juan del Puerto: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in San Juan del Puerto, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Juan del Puerto, December typically has an average temperature of 13°C (55°F), with highs reaching up to 23°C (74°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec515558626974788076695955
Data source: Temperature data for San Juan del Puerto generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in San Juan del Puerto

In San Juan del Puerto in December, the total precipitation amount is 45 mm (1.8 in) over a span of 5 days.

December Precipitation Trends in San Juan del Puerto

The chart displays monthly precipitation patterns in San Juan del Puerto, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In San Juan del Puerto, December typically receives around 45 mm (1.8 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec313766672241114366045
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in San Juan del Puerto

In San Juan del Puerto in December, humidity is 81%. With an average temperature of 13°C (55°F), this humidity feels like a damp blanket wrapping around you, making strolls outdoors feel heavy and slightly oppressive, which may be less than ideal for travelers looking to explore comfortably.

December Average Humidity in San Juan del Puerto

This chart illustrates the average monthly humidity levels in San Juan del Puerto, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in San Juan del Puerto is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec79%71%67%60%59%52%54%52%59%68%77%81%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in San Juan del Puerto

In San Juan del Puerto in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in San Juan del Puerto, you can check the information here.

Maximum UV Index Levels in San Juan del Puerto for December

The chart shows the monthly maximum UV Index (UVI) for San Juan del Puerto in December, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In December, the maximum UV index in San Juan del Puerto typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101110109743
Data source: San Juan del Puerto December UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How December Weather in San Juan del Puerto Compares to Other Months

Weather in San Juan del Puerto varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in San Juan del Puerto, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in San Juan del Puerto, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather11°C (52°F)30 mm (1.2 inches)79%moderate
February Weather13°C (56°F)37 mm (1.4 inches)71%moderate
March Weather15°C (59°F)66 mm (2.6 inches)67%high
April Weather17°C (62°F)67 mm (2.6 inches)60%very high
May Weather21°C (69°F)22 mm (0.9 inches)59%very high
June Weather23°C (74°F)4 mm (0.2 inches)52%extreme
July Weather26°C (79°F)1 mm (0.0 inches)54%very high
August Weather27°C (81°F)1 mm (0.0 inches)51%very high
September Weather24°C (76°F)14 mm (0.5 inches)59%very high
October Weather20°C (69°F)36 mm (1.4 inches)68%high
November Weather15°C (59°F)60 mm (2.4 inches)77%moderate
December Weather13°C (55°F)45 mm (1.8 inches)81%moderate

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