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December Weather in Greenock, Australia

Last updated: August 22, 2025

In December, the average temperature in Greenock, Australia typically hovers around 20°C (68°F). However, temperatures can vary significantly, with minimums plunging to 7°C (44°F) and soaring up to a scorching 43°C (109°F). Expect some rainfall as well, with an average precipitation of 15 mm (0.6 in) spread over about 4 days. The atmosphere is moderately comfortable, boasting an average humidity of 46%.

December Temperature in Greenock

In December in Greenock, the average temperature is 20°C (68°F), with maximums reaching 43°C (109°F) and minimums dropping as low as 7°C (44°F). This varied climate makes Greenock an ideal destination for travelers seeking both warmth and cooler respite.

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

The chart illustrates December temperature patterns in Greenock, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Greenock, December typically has an average temperature of 20°C (68°F), with highs reaching up to 43°C (109°F) and lows dropping to around 7°C (44°F).
JanFebMarAprMayJunJulAugSepOctNovDec726866615348484953586368
Data source: Temperature data for Greenock 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 Greenock

In Greenock in December, the precipitation amount is 15 mm (0.6 in) occurring over the course of 4 days.

December Precipitation Trends in Greenock

The chart displays monthly precipitation patterns in Greenock, 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 Greenock, December typically receives around 15 mm (0.6 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec152110243436425734333815
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Greenock

In Greenock in December, humidity is 46%. With an average temperature of 20°C (68°F), this humidity feels like a comfortable embrace, making it perfect for exploring the sights without feeling overly sticky or weighed down.

December Average Humidity in Greenock

This chart illustrates the average monthly humidity levels in Greenock, 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 Greenock is approximately 46%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec41%46%55%66%73%76%76%70%65%51%50%46%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Greenock

In Greenock in December, the maximum UV index reaches an alarming 15, which falls into the extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take precautions. For detailed information, you can check the Hourly UV Index in Greenock.

Maximum UV Index Levels in Greenock for December

The chart shows the monthly maximum UV Index (UVI) for Greenock 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 Greenock typically reaches 15, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141412853458101315
Data source: Greenock 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 Greenock Compares to Other Months

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

This table compares monthly weather conditions in Greenock, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather22°C (72°F)15 mm (0.6 inches)41%extreme
February Weather20°C (69°F)21 mm (0.8 inches)46%extreme
March Weather19°C (66°F)10 mm (0.4 inches)55%extreme
April Weather16°C (61°F)24 mm (0.9 inches)66%very high
May Weather12°C (53°F)34 mm (1.3 inches)73%moderate
June Weather9°C (49°F)36 mm (1.4 inches)76%moderate
July Weather9°C (49°F)42 mm (1.6 inches)76%moderate
August Weather9°C (49°F)57 mm (2.2 inches)70%moderate
September Weather12°C (53°F)34 mm (1.3 inches)65%very high
October Weather14°C (58°F)33 mm (1.3 inches)51%very high
November Weather17°C (63°F)38 mm (1.5 inches)50%extreme
December Weather20°C (68°F)15 mm (0.6 inches)46%extreme

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