December Weather in Mount Barker, Australia

Last updated: February 26, 2025

In December, Mount Barker, Australia experiences a climate marked by contrasting temperatures, with highs soaring to a blistering 43°C (109°F) and settling to a more comfortable average of 19°C (67°F). The nights bring a refreshing coolness, dipping to a minimum of 6°C (44°F). While the month is generally dry, a modest 17 mm (0.7 in) of precipitation can be expected over 4 days, offering slight relief from the heat. With humidity levels around 46%, December in Mount Barker presents a dynamic climate, perfect for outdoor activities while reminding visitors to stay hydrated and vigilant in the summer sun.

December Temperature in Mount Barker

In December, Mount Barker experiences a transition into the sultry Australian summer, with temperatures hovering between a minimum of 6°C (44°F) and soaring to a maximum of 43°C (109°F). The average temperature settles comfortably at 19°C (67°F), hinting at the heat to come in January. This month often brings a significant increase in warmth compared to the preceding months, with notably higher maximum temperatures compared to the cooler fall and early winter periods. As the days grow longer, residents enjoy the vibrant summer ambiance, making it a perfect time for outdoor activities and festivities. Overall, December marks a striking shift, showcasing Mount Barker's characteristic summer heat while remaining mild during the cooler early mornings.

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

The chart illustrates December temperature patterns in Mount Barker, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec706766615450505053586367
Data source: Temperature data for Mount Barker generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Mount Barker

In Mount Barker, Australia, December typically ushers in a modest 17 mm (0.7 in) of rainfall over the course of just 4 days. This amount reflects a gradual decrease from the wetter months prior, highlighting a trend where precipitation peaks during the winter and spring. As summer approaches, the drier conditions become more pronounced, as seen in January and February, which experience significantly lower rainfall totals. Despite this seasonal ebb, December’s rainfall serves as a gentle reminder of the nourishing patterns that sustain the region, providing essential moisture before the hotter months set in.

December Precipitation Trends in Mount Barker

The chart displays monthly precipitation patterns in Mount Barker, 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.
JanFebMarAprMayJunJulAugSepOctNovDec152013274745596844394117
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Mount Barker

In Mount Barker, Australia, December wraps up the year with a humidity level of 46%, marking a notable dip from the heavier moisture of the preceding months. This decrease follows a steady upward trend peaking in July and June, where humidity levels reached 76%. As the warmer months approached from late spring to summer, humidity levels gradually decreased, starting from a high of 73% in May and trending downwards to December's 46%. This pattern suggests a shift towards drier conditions as the region transitions into the warmer summer months, with December providing a refreshing respite from the mid-year humidity peak.

December Average Humidity in Mount Barker

This chart illustrates the average monthly humidity levels in Mount Barker, with December's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how December's humidity levels compare to other months.
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 Barker

As December rolls into Mount Barker, Australia, residents and visitors experience a notable peak in UV intensity, with the UV Index reaching a striking 15, categorizing it as extreme. This trend of high UV levels is consistent with the months leading up to December, where both November and the preceding summer months showcased extreme exposure levels. With a burn time of just 10 minutes, it’s crucial to take precautions during this time. Interestingly, while the months of April to August see a drop in intensity, returning to very high and moderate ranges, the overall pattern illustrates the importance of sun safety, particularly as the hotter months approach. For those seeking more information on UV exposure, explore the Mount Barker UV Index for insights on staying safe under the Australian sun.

Maximum UV Index Levels in Mount Barker for December

The chart shows the monthly maximum UV Index (UVI) for Mount Barker 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.
JanFebMarAprMayJunJulAugSepOctNovDec141312853458101315
Data source: Mount Barker 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.

December Sunshine in Mount Barker

In Mount Barker, Australia, December shines brightly as the sunniest month of the year, boasting an impressive 353 hours of sunshine. This radiant stretch marks a delightful shift from the cooler months, as the sunlight steadily increases from the depths of winter. Starting with just 221 hours in June, the sunshine hours climb gradually, peaking in November at 312 hours, before culminating in December's glorious display. Such a trend highlights the vibrant summer months, as each preceding month builds anticipation for the sun-drenched days and warm evenings that characterize the festive season. The increased daylight not only enhances the natural beauty of the region but also invites both locals and visitors to revel in outdoor activities under the clear blue skies.

Monthly Sunshine Duration in Mount Barker: December Highlighted

The December sunshine duration represents the total number of hours Mount Barker experiences direct sunlight during the month of December, excluding cloudy or obstructed periods. This chart compares the sunshine duration of December with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec293h297h307h256h233h221h237h248h275h300h312h353h
Data source: Mount Barker December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Mount Barker During December

The likelihood of sunny weather in Mount Barker, Australia shows a notable increase in December, reaching 71%, making it one of the sunniest months of the year. This trend reflects a seasonal shift, as the chances of sunshine have steadily risen from 40% in May to 42% in November, culminating in a significant leap as summer approaches. Compared to the winter months, where sunshine dips to a mere 35% from June to July, December offers a refreshing transition into warmer, sunnier days, inviting outdoor activities and holiday cheer. As locals and visitors alike gear up for the festive season, December's bright outlook ensures a delightful backdrop for celebrations and gatherings.

Percentage of Sunny Days in December in Mount Barker

The chart illustrates the percentage of sunny days in Mount Barker throughout the year, with December highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Mount Barker experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec58%60%60%59%40%35%36%51%53%49%42%71%
Data source: Mount Barker December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Mount Barker in December

In Mount Barker, Australia, the dance of daylight hours throughout the year reveals an intriguing rhythm of change. December embraces the summer solstice with 14 hours of sunlight, echoing the length of daylight seen in January. As the months progress, daylight gradually wanes, with March and April experiencing a shift to 12 and 11 hours respectively, before reaching a low of 9 hours in the heart of winter, June. The return of spring heralds longer days once more, as daylight rebounds to 10 hours in July and August, and gradually climbs back to 13 hours in November. This cyclical pattern not only highlights the seasonal transformations but also invites locals and visitors alike to savor the brilliance of Mount Barker's summer days and the cozy charm of its winter nights.

Average Daylight Hours in Mount Barker for December

The chart illustrates the variation in daylight duration in Mount Barker throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec14h 11m13h 20m12h 16m11h 10m10h 16m9h 49m10h 2m10h 49m11h 52m12h 57m13h 56m14h 27m
Data source: Mount Barker daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Mount Barker

As the year draws to a close, December in Mount Barker, Australia, ushers in a gentle breeze, with an average wind speed of 3.5 m/s (8 mph). This marks a slight dip from the more vigorous gusts of July, which recorded the season's peak at 4.7 m/s (10 mph). Interestingly, the wind's intensity remains fairly consistent throughout the warmer months, hovering around 3.7 m/s in both January and October. The transition into December reflects the calming rhythms of late spring, with breezes softening after the sharper winds of winter. Overall, the trends suggest a dynamic yet moderated wind pattern, perfect for those looking to enjoy the fresh air while soaking in the beautiful landscapes of Mount Barker.

Average December Wind Speed in Mount Barker

The chart displays monthly wind speed patterns in Mount Barker, with values for each month shown alongside December's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how December's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.73.63.02.93.43.94.73.74.13.73.93.5 m/s
Data source: Mount Barker December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Mount Barker Compares to Other Months

The weather in Mount Barker changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of December's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Mount Barker and find detailed weather information for every month.

In December, temperatures range from a minimum of 6°C (44°F) to a maximum of 43°C (109°F), with an average of 19°C (67°F). The month experiences 17 mm (0.7 in) of precipitation over four days, and humidity levels are around 46%. Conversely, January sees a slight increase in the minimum temperature, averaging 9°C (49°F) and an average of 21°C (71°F), while the maximum temperature reaches 45°C (114°F). Precipitation decreases to 15 mm (0.6 in) over just two days, and humidity drops to 41%. For a detailed look at January weather specifics, you can check Mount Barker weather in January.

In December, the weather features a minimum temperature of 6°C (44°F) and can reach up to a sweltering maximum of 43°C (109°F), with an average temperature of 19°C (67°F). The month experiences around 17 mm (0.7 in) of precipitation over four days, while maintaining a consistent humidity level of 46%.

In contrast, February offers slightly milder conditions, with a minimum of 8°C (47°F) and a maximum of 39°C (103°F), alongside an average temperature of 20°C (68°F). Precipitation increases slightly to 19 mm (0.8 in) over just three days, but humidity remains at 46%. This makes February compare favorably to December in terms of overall temperature, though both months share similar humidity levels. For more details on the weather in February, check out this resource: Mount Barker weather in February.

In comparing the weather patterns of December and March, we see subtle yet significant differences. December experiences a range of temperatures from a minimum of 6°C (44°F) to a maximum of 43°C (109°F), with an average temperature of 19°C (67°F) and relatively low humidity at 46%. In contrast, March has slightly warmer nights with a minimum temperature of 8°C (46°F) and a maximum of 39°C (103°F), while maintaining a similar average temperature of 19°C (66°F). Although March sees less rainfall at 13 mm (0.5 in) over about 3 days compared to December's 17 mm (0.7 in) over 4 days, the humidity is higher at 55%. For more detailed insights, you can check Mount Barker weather in March.

In December, the weather is characterized by more extreme temperatures, with a minimum of 6°C (44°F) and a high reaching up to 43°C (109°F), averaging around 19°C (67°F). The month sees relatively low precipitation, accumulating only 17 mm (0.7 in) over four days, and maintains a lower humidity level of 46%. In contrast, April experiences milder temperatures, with a minimum of 5°C (41°F) and a maximum of 35°C (95°F), averaging 16°C (61°F). The rainfall is slightly higher, totaling 27 mm (1.0 in) across four days, and the humidity rises to 66%. For more detailed insights into weather conditions, you can refer to Mount Barker weather in April.

December weather is characterized by warmer temperatures, with a minimum of 6°C, an average of 19°C, and a maximum soaring to 43°C. This month sees relatively low precipitation at 17 mm over just 4 days, accompanied by a moderate humidity level of 46%. In contrast, May experiences cooler temperatures, ranging from a minimum of 3°C to a maximum of 27°C, with an average of 12°C. This month has higher precipitation at 47 mm spread over 9 days, and significantly increased humidity at 73%. For more details about the weather patterns during this month, you can visit Mount Barker weather in May.

When comparing the weather in December and June, distinct differences emerge in temperature and precipitation. December boasts a much warmer climate, with average temperatures reaching 19°C (67°F) and maximum highs soaring to 43°C (109°F). In contrast, June experiences cooler conditions, with an average temperature of only 10°C (50°F) and a maximum of 20°C (68°F). Additionally, December has relatively low precipitation at 17 mm (0.7 in) over just 4 days, while June sees significantly higher rainfall totaling 45 mm (1.8 in) spread across 10 days, contributing to a much higher humidity level of 76%. For more detailed information, you can check the specifics at Mount Barker weather in June.

When comparing the weather in December and July, notable differences emerge. December boasts a warmer climate, with temperatures ranging from a minimum of 6°C (44°F) to a scorching maximum of 43°C (109°F) and an average of 19°C (67°F). In contrast, July presents a much cooler atmosphere, with temperatures peaking at 19°C (67°F) and dipping as low as 1°C (34°F), averaging around 10°C (50°F). While December experiences relatively low precipitation at 17 mm (0.7 in) over just four days, July sees a significant increase with 59 mm (2.3 in) spread across 12 days, contributing to a higher humidity of 76%. For a more detailed look at July weather patterns, you can explore Mount Barker weather in July.

December and August present stark contrasts in weather. December enjoys a warmer climate, with average temperatures reaching 19°C (67°F) and maximums soaring up to 43°C (109°F). However, it experiences relatively low precipitation at 17 mm (0.7 in) over just 4 days and a moderate humidity of 46%. In contrast, August is much cooler, with average temperatures around 10°C (50°F) and maximums peaking at 23°C (73°F). It also sees significant rainfall, totaling 68 mm (2.7 in) across 13 days, contributing to a higher humidity of 70%. For a closer look at what to expect, check out Mount Barker weather in August.

When comparing the weather in December and September, December typically offers warmer temperatures, with a minimum of 6°C and a maximum reaching up to 43°C, compared to September's more moderate range of 1°C to 29°C. The average temperature in December is around 19°C, while September's average is significantly lower at 12°C. Additionally, December experiences less precipitation, with only 17 mm over 4 days, whereas September sees more rain, totaling 44 mm across 10 days. Humidity levels also differ, with December registering at 46% compared to September’s higher 65%. For a closer look at September's conditions, you can check out Mount Barker weather in September.

When comparing the weather in December and October, December typically experiences warmer temperatures, with a minimum of 6°C (44°F) and an average high of 43°C (109°F), while October starts cooler, with a minimum of 4°C (39°F) and a maximum of 35°C (95°F). Precipitation is notably lower in December, with only 17 mm (0.7 in) over about 4 days, compared to October's 39 mm (1.5 in) spread across 7 days. Humidity levels are also marginally lower in December at 46%, compared to 51% in October, making December generally feel drier and hotter. For more detailed insights into October weather, check out Mount Barker weather in October.

In December, the weather is generally hotter than in November, with average temperatures rising from 17°C (63°F) in November to 19°C (67°F) in December. The maximum temperature in December peaks at a sweltering 43°C (109°F), compared to November's maximum of 41°C (105°F). Additionally, December experiences less rainfall, with only 17 mm (0.7 in) over 4 days, while November sees significantly more precipitation at 41 mm (1.6 in) over 7 days. Humidity levels also drop slightly in December to 46%, down from November's 50%. For more details, you can check out Mount Barker weather in November.

Compare Mount Barker's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Mount Barker

December in Mount Barker ushers in the warmth of summer, marking a distinct contrast to the cooler months. With its peak temperatures soaring significantly higher, residents and visitors can expect a notable increase in warmth, as the air fills with a pleasant dryness. Although the rainfall is relatively minimal, with only a handful of days experiencing precipitation, the average humidity offers a refreshing touch amidst the heat. This vibrant transition to summer sets the stage for outdoor activities and festive gatherings, making December a lively time in Mount Barker. For a deeper dive into the region’s climate, explore Mount Barker Climate.