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December Weather in Portadown, United Kingdom

Last updated: August 27, 2025

In December, the average temperature in Portadown, United Kingdom hovers around 6°C (43°F). You'll experience chilly days, with the temperature occasionally dipping to a minimum of -4°C (24°F) and reaching a maximum of 13°C (56°F). Expect 82 mm (3.2 in) of precipitation over about 14 days, while the air remains quite humid with an average humidity of 86%.

December Temperature in Portadown

In December in Portadown, the average temperature is 6°C (43°F). The maximum can reach 13°C (56°F), while the minimum can drop as low as -4°C (24°F). Be prepared for chilly weather and pack accordingly for your trip!

December Weather in Portadown: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Portadown, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Portadown, December typically has an average temperature of 6°C (43°F), with highs reaching up to 13°C (56°F) and lows dropping to around -4°C (24°F).
JanFebMarAprMayJunJulAugSepOctNovDec424244475358605956514643
Data source: Temperature data for Portadown 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 Portadown

In Portadown in December, the precipitation amount is 82 mm (3.2 in) spread over 14 days.

December Precipitation Trends in Portadown

The chart displays monthly precipitation patterns in Portadown, 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 Portadown, December typically receives around 82 mm (3.2 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec5787784666777611368798082
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Portadown

In Portadown in December humidity is 86%. With an average temperature of 6°C (43°F), this humidity feels like a chilling blanket enveloping you, making outdoor exploration feel damp and uncomfortable.

December Average Humidity in Portadown

This chart illustrates the average monthly humidity levels in Portadown, 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 Portadown is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%86%86%85%82%84%86%86%88%89%90%87%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Portadown

In Portadown in December, the maximum UV index is 1, which corresponds to a low Exposure Category. This means you have a time to burn of 45 minutes. For more details, you can check the Hourly UV Index in Portadown.

Maximum UV Index Levels in Portadown for December

The chart shows the monthly maximum UV Index (UVI) for Portadown 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 Portadown typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578875321
Data source: Portadown 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 Portadown Compares to Other Months

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

This table compares monthly weather conditions in Portadown, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)57 mm (2.2 inches)87%low
February Weather6°C (43°F)87 mm (3.4 inches)86%low
March Weather7°C (44°F)78 mm (3.1 inches)86%moderate
April Weather8°C (48°F)46 mm (1.8 inches)85%moderate
May Weather11°C (53°F)66 mm (2.6 inches)82%high
June Weather14°C (58°F)77 mm (3.0 inches)84%very high
July Weather16°C (61°F)76 mm (3.0 inches)86%very high
August Weather15°C (60°F)113 mm (4.4 inches)86%high
September Weather13°C (56°F)68 mm (2.7 inches)88%moderate
October Weather10°C (51°F)79 mm (3.1 inches)89%moderate
November Weather8°C (46°F)79 mm (3.1 inches)90%low
December Weather6°C (43°F)82 mm (3.2 inches)86%low

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