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December Weather in Mount Pleasant, Australia

Last updated: August 22, 2025

In December, the average temperature in Mount Pleasant, Australia hovers around 19°C (66°F). However, be prepared for a temperature range that can dip to a minimum of 6°C (43°F) and soar to a maximum of 42°C (108°F). During this month, you can expect about 16 mm (0.6 in) of precipitation spread over 4 days, along with an average humidity level of 46%.

December Temperature in Mount Pleasant

In December in Mount Pleasant, the average temperature is 19°C (66°F). Maximum temperatures can reach 42°C (108°F), while minimum temperatures can drop to 6°C (43°F). Be prepared for a wide range of temperatures when traveling, so pack accordingly!

December Weather in Mount Pleasant: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Mount Pleasant, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mount Pleasant, December typically has an average temperature of 19°C (66°F), with highs reaching up to 42°C (108°F) and lows dropping to around 6°C (43°F).
JanFebMarAprMayJunJulAugSepOctNovDec706765605348484852576266
Data source: Temperature data for Mount Pleasant 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 Mount Pleasant

In Mount Pleasant in December, the precipitation amount is 16 mm (0.6 in) over a span of 4 days.

December Precipitation Trends in Mount Pleasant

The chart displays monthly precipitation patterns in Mount Pleasant, 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 Mount Pleasant, December typically receives around 16 mm (0.6 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec162110254042506538374316
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Mount Pleasant

In Mount Pleasant in December humidity is 46%. With an average temperature of 19°C (66°F), this humidity feels like a refreshing embrace, making it comfortable for traveling as long as you're prepared for occasional warmth and a gentle stickiness in the air.

December Average Humidity in Mount Pleasant

This chart illustrates the average monthly humidity levels in Mount Pleasant, 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 Mount Pleasant 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 Mount Pleasant

In Mount Pleasant 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 Mount Pleasant.

Maximum UV Index Levels in Mount Pleasant for December

The chart shows the monthly maximum UV Index (UVI) for Mount Pleasant 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 Mount Pleasant typically reaches 15, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141312853458101315
Data source: Mount Pleasant 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 Mount Pleasant Compares to Other Months

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

This table compares monthly weather conditions in Mount Pleasant, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather21°C (70°F)16 mm (0.6 inches)41%extreme
February Weather19°C (67°F)21 mm (0.8 inches)46%extreme
March Weather18°C (65°F)10 mm (0.4 inches)55%extreme
April Weather16°C (60°F)25 mm (1.0 inches)66%very high
May Weather11°C (53°F)40 mm (1.6 inches)73%moderate
June Weather9°C (48°F)42 mm (1.7 inches)76%moderate
July Weather9°C (48°F)50 mm (2.0 inches)76%moderate
August Weather9°C (49°F)65 mm (2.6 inches)70%moderate
September Weather11°C (53°F)38 mm (1.5 inches)65%very high
October Weather14°C (57°F)37 mm (1.5 inches)51%very high
November Weather17°C (62°F)43 mm (1.7 inches)50%extreme
December Weather19°C (66°F)16 mm (0.6 inches)46%extreme

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