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December Weather in South Suffolk, United States

Last updated: June 24, 2025

In December, the average temperature in South Suffolk, United States is a cool 8°C (47°F). Expect a minimum drop to -8°C (19°F) and a maximum rise to 24°C (76°F). With an average precipitation of 89 mm (3.5 in) over 9 days, it's wise to prepare for some wet weather. The atmospheric conditions are quite humid, with an average humidity level of 84%.

December Temperature in South Suffolk

In December in South Suffolk, the average temperature is 8°C (47°F). The maximum can reach 24°C (76°F) and the minimum can be as low as -8°C (19°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.

December Weather in South Suffolk: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in South Suffolk, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In South Suffolk, December typically has an average temperature of 8°C (47°F), with highs reaching up to 24°C (76°F) and lows dropping to around -8°C (19°F).
JanFebMarAprMayJunJulAugSepOctNovDec424751616976807974655246
Data source: Temperature data for South Suffolk 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 South Suffolk

In South Suffolk in December, the precipitation amount is 89 mm (3.5 in) during a span of 9 days.

December Precipitation Trends in South Suffolk

The chart displays monthly precipitation patterns in South Suffolk, 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 South Suffolk, December typically receives around 89 mm (3.5 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec9110284101120118140168130847689
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in South Suffolk

In South Suffolk in December, humidity is 84%. With an average temperature of 8°C (47°F), this humidity feels like a damp blanket wrapping around you, making travel feel heavy and a bit lethargic, as the air thickens with moisture and each step becomes a little more cumbersome.

December Average Humidity in South Suffolk

This chart illustrates the average monthly humidity levels in South Suffolk, 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 South Suffolk is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%83%82%81%80%82%81%81%78%80%84%84%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in South Suffolk

In South Suffolk 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 South Suffolk, you can check the information here.

Maximum UV Index Levels in South Suffolk for December

The chart shows the monthly maximum UV Index (UVI) for South Suffolk 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 South Suffolk typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec4689101011109853
Data source: South Suffolk 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 South Suffolk Compares to Other Months

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

This table compares monthly weather conditions in South Suffolk, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (42°F)91 mm (3.6 inches)84%moderate
February Weather8°C (47°F)102 mm (4.0 inches)83%high
March Weather11°C (51°F)84 mm (3.3 inches)82%very high
April Weather16°C (61°F)101 mm (4.0 inches)81%very high
May Weather20°C (69°F)120 mm (4.7 inches)80%very high
June Weather24°C (76°F)118 mm (4.6 inches)82%very high
July Weather27°C (81°F)140 mm (5.5 inches)81%extreme
August Weather26°C (79°F)168 mm (6.6 inches)81%very high
September Weather23°C (75°F)130 mm (5.1 inches)78%very high
October Weather19°C (66°F)84 mm (3.3 inches)80%very high
November Weather11°C (52°F)76 mm (3.0 inches)84%moderate
December Weather8°C (47°F)89 mm (3.5 inches)84%moderate

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