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December Weather in Old Harbour, Jamaica

Last updated: August 23, 2025

In Old Harbour, Jamaica, the average temperature in December is a pleasant 25°C (78°F). Expect a minimum of 21°C (71°F) and a maximum of 30°C (86°F). While the sun shines, be prepared for some rain, with an average precipitation of 28 mm (1.1 in) over 7 days. The air is quite humid too, with an average humidity level of 77%.

December Temperature in Old Harbour

In December in Old Harbour, the average temperature is 25°C (78°F). Maximums can reach 30°C (86°F), while minimums can be as low as 21°C (71°F). This pleasant climate makes Old Harbour an ideal destination for travelers seeking warm and enjoyable weather during their visit.

December Weather in Old Harbour: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Old Harbour, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Old Harbour, December typically has an average temperature of 25°C (78°F), with highs reaching up to 30°C (86°F) and lows dropping to around 21°C (71°F).
JanFebMarAprMayJunJulAugSepOctNovDec767677787981828281797877
Data source: Temperature data for Old Harbour 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 Old Harbour

In Old Harbour in December, the precipitation amount is 28 mm (1.1 in) over a period of 7 days.

December Precipitation Trends in Old Harbour

The chart displays monthly precipitation patterns in Old Harbour, 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 Old Harbour, December typically receives around 28 mm (1.1 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec2524377111249389112218611028
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Old Harbour

In Old Harbour in December humidity is 77%. With an average temperature of 25°C (78°F), this humidity feels like a warm, sticky embrace that can quickly sap your energy, making outdoor activities more challenging and requiring frequent breaks to stay hydrated and cool.

December Average Humidity in Old Harbour

This chart illustrates the average monthly humidity levels in Old Harbour, 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 Old Harbour is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%76%75%76%77%79%79%78%77%76%78%77%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Old Harbour

In Old Harbour in December, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Old Harbour.

Maximum UV Index Levels in Old Harbour for December

The chart shows the monthly maximum UV Index (UVI) for Old Harbour 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 Old Harbour typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec911131413131313121298
Data source: Old Harbour 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 Old Harbour Compares to Other Months

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

This table compares monthly weather conditions in Old Harbour, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather25°C (77°F)25 mm (1.0 inches)76%very high
February Weather25°C (77°F)24 mm (0.9 inches)76%extreme
March Weather25°C (77°F)37 mm (1.4 inches)75%extreme
April Weather25°C (78°F)71 mm (2.8 inches)76%extreme
May Weather26°C (79°F)112 mm (4.4 inches)77%extreme
June Weather27°C (81°F)49 mm (1.9 inches)79%extreme
July Weather28°C (82°F)37 mm (1.5 inches)79%extreme
August Weather28°C (82°F)90 mm (3.6 inches)78%extreme
September Weather27°C (81°F)122 mm (4.8 inches)77%extreme
October Weather26°C (79°F)185 mm (7.3 inches)76%extreme
November Weather26°C (79°F)110 mm (4.3 inches)78%very high
December Weather25°C (78°F)28 mm (1.1 inches)77%very high

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