December Weather in Mount Barker, Australia

Last updated: February 26, 2025

December in Mount Barker, Australia brings a mix of warmth and humidity, with maximum temperatures soaring to 38°C (101°F) and an average of 18°C (64°F). Cooler nights provide a refreshing contrast, with temperatures dipping to a minimum of 5°C (42°F). The month sees about 19 mm (0.7 in) of precipitation, spread over three days, making for a relatively dry spell. With humidity hovering around 69%, the air can feel quite muggy, especially during the hotter days. This combination makes December a unique time in Mount Barker, blending the warmth of summer with the cooler relief of night and occasional rainfall.

December Temperature in Mount Barker

In December, Mount Barker experiences the height of summer, with temperatures soaring to a maximum of 38°C (101°F), creating a warm and vibrant atmosphere. The average temperature rests at a comfortable 18°C (64°F), while the minimum dips just to 5°C (42°F), providing cooler respite during the nights. This month marks a transition from the milder temperatures of November, which had highs of 34°C (93°F), to the intense heat typical of the summer months ahead. As the festive season approaches, the warm weather encourages outdoor activities, making it an ideal time to enjoy the scenic beauty of the region basked in golden sunshine.

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.
JanFebMarAprMayJunJulAugSepOctNovDec666665605653525254565964
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 December, Mount Barker, Australia, experiences a notable dip in precipitation, with only 19 mm (0.7 in) of rainfall occurring over a mere three days. This marks a departure from the wetter months preceding it, particularly the peak wetness seen in August, where the region recorded 80 mm (3.2 in) over twelve days. As the year wraps up, the rainfall starts to consolidate into shorter bursts, suggesting a shift towards drier conditions typical of the summer season ahead. This pattern highlights the region's gradual transition, illuminating how December serves as a bridge between the wetter winter months and the forthcoming heat of January.

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.
JanFebMarAprMayJunJulAugSepOctNovDec133537294041518055393119
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Mount Barker

As the year unfolds in Mount Barker, Australia, December brings a slight dip in humidity, measuring at 69%. This marks a subtle decline from the higher figures recorded in the preceding months, particularly from April to July, which saw humidity levels consistently hovering around 76%. Following a gradual decrease through the latter part of the year, including a notable drop to 68% in November, December's humidity levels suggest a seasonal transition, reflecting a typical shift towards drier conditions as summer approaches. Overall, the trend illustrates a gentle ebb in moisture, creating a refreshing end to the year while hinting at the warmer weather ahead.

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.
JanFebMarAprMayJunJulAugSepOctNovDec70%71%73%76%74%76%76%75%74%70%68%70%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Mount Barker

In Mount Barker, Australia, December sees a peak UV Index of 14, categorized as extreme, with a rapid burn time of just 10 minutes. This aligns with January and February, both also recording a UV Index of 14, indicating a relentless intensity of sun exposure during the peak of summer. As the year progresses into March, the UV Index slightly declines to 11, yet it remains within the extreme range. The trend showcases a significant drop by April to a very high index of 8, reflecting a shift towards milder sun conditions as the season transitions. However, even the later months, such as November with an index of 12, signal that UV exposure is still a serious concern in this region. Overall, the consistently high UV Index in December and the preceding months underscores the importance of sun safety measures. For more details on UV conditions throughout the year, check Mount Barker UV Index.

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.
JanFebMarAprMayJunJulAugSepOctNovDec141411853457101214
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

December in Mount Barker, Australia, is a radiant month, boasting a remarkable 362 hours of sunshine. This vibrant increase starkly contrasts with the cooler, shorter days of the earlier winter months, where sunlight dips to around 242 hours in June. As the year progresses, there's a noticeable upward trend in sunshine hours, with December shining as the pinnacle of brightness, surpassing even the spring months of September (277 hours) and October (302 hours). The consistent ascent in daylight hours not only creates a warm, inviting atmosphere but also encourages outdoor activities and celebrations, making December a cherished time in Mount Barker.

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.
JanFebMarAprMayJunJulAugSepOctNovDec297h295h295h258h254h242h252h264h277h302h314h362h
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

As December rolls in, Mount Barker, Australia, welcomes a notable increase in the likelihood of sunny weather, boasting a 55% chance of sunshine. This marks a notable shift from the preceding months, where the sun's presence gradually diminishes, seen in November's 35%. Interestingly, December’s promise of bright skies stands out in comparison to earlier months such as May, with only 29% chance, and March, which drops to 34%. This trend suggests that while summer officially starts in December, the region enjoys a delightful peak of sunlight, making it an ideal time for outdoor activities and festive 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.
JanFebMarAprMayJunJulAugSepOctNovDec49%41%34%35%29%42%42%51%47%37%35%55%
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 9m13h 19m12h 15m11h 11m10h 17m9h 51m10h 4m10h 51m11h 52m12h 57m13h 55m14h 25m
Data source: Mount Barker daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Mount Barker

In Mount Barker, Australia, the December wind brings a refreshing change as the average wind speed reaches 4.4 m/s (10 mph). This marks a notable increase compared to the calmer months of late autumn, where speeds dipped to an average of 3.9 m/s in November and 3.2 m/s in April. The trend across the year indicates a pattern of rising winds during the winter months, peaking in July with 5.7 m/s (13 mph) before softening in the warmer seasons. As December transitions into summer, the winds maintain a mild yet invigorating force, perfectly complementing the vibrant Australian landscape ready for the festive season. While the gusts reflect a decrease from the winter peak, they provide a comfortable breeze that enhances the warmth of approaching summer.

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.
JanFebMarAprMayJunJulAugSepOctNovDec4.94.63.73.23.84.65.74.53.84.03.94.4 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, the weather features a temperature range with a minimum of 5°C (42°F) and an average of 18°C (64°F), while it can peak at 38°C (101°F). The month experiences moderate precipitation with 19 mm (0.7 in) over three days and a humidity level of 69%. In comparison, January begins with slightly warmer temperatures, featuring a minimum of 7°C (44°F) and an average of 19°C (66°F), with a maximum of 39°C (103°F). Precipitation decreases to 13 mm (0.5 in), occurring over just two days, and humidity rises slightly to 70%. For more detailed weather information, check out Mount Barker weather in January.

When comparing the weather in December and February, we observe some notable differences. December experiences slightly lower temperatures, with a minimum of 5°C (42°F) and an average of 18°C (64°F), reaching a maximum of 38°C (101°F). In contrast, February's temperatures are a bit warmer, with minimums of 8°C (47°F) and an average of 19°C (66°F), but can peak at a higher maximum of 42°C (107°F). Additionally, February sees increased precipitation at 35 mm (1.4 in) over five days compared to December’s 19 mm (0.7 in) over three days. Humidity is slightly higher in February at 71%, compared to December's 69%. For more detailed insights into February weather, visit Mount Barker weather in February.

December and March both feature similar average temperatures, hovering around 18°C (64°F), but the extremes of the seasons differ. December sees maximum temperatures reaching up to 38°C (101°F), while March is slightly milder with a maximum of 35°C (96°F). Precipitation is notably higher in March, totaling 37 mm (1.5 in) over 8 days, compared to just 19 mm (0.7 in) on 3 days in December. Both months exhibit relatively high humidity, with December at 69% and March slightly higher at 73%. For more detailed information on March weather, you can visit Mount Barker weather in March.

In December, the weather is typically warmer, with average temperatures ranging from a minimum of 5°C (42°F) to a maximum of 38°C (101°F), while April experiences slightly cooler averages, with temperatures ranging from 5°C (40°F) to 34°C (93°F). December sees less precipitation, tallying around 19 mm (0.7 in) over just three days, compared to April's 29 mm (1.1 in) across five days, indicating a slightly wetter period. Additionally, humidity levels are higher in April at 76%, compared to December's 69%, contributing to a more humid atmosphere during the early months of the year. For a detailed overview of the weather in April, you can check Mount Barker weather in April.

In December, temperatures in the region can range from a minimum of 5°C (42°F) to a maximum of 38°C (101°F), with an average temperature of 18°C (64°F). The month experiences relatively low precipitation, totaling 19 mm (0.7 in) over just three days and a humidity level of 69%. In contrast, May sees cooler temperatures, with a minimum of 3°C (39°F), an average of 13°C (56°F), and a maximum of 29°C (85°F). This month also experiences higher precipitation, averaging 40 mm (1.6 in) over six days, and slightly increased humidity at 74%. For more detailed information, check out Mount Barker weather in May.

When comparing the weather in December and June, notable differences emerge. December tends to be warmer, with temperatures ranging from a minimum of 5°C to a maximum of 38°C, while June's temperatures are significantly cooler, peaking at 23°C and dipping to 2°C. Additionally, December experiences less precipitation, with only 19 mm over about 3 days, compared to June's 41 mm across 9 days. Humidity levels are also higher in June at 76%, compared to December's 69%. For more detailed insights about June weather, you can refer to Mount Barker weather in June.

When comparing the weather in December and July, December typically boasts warmer temperatures, with highs reaching up to 38°C (101°F), while July's maximum temperatures are significantly cooler, peaking at 22°C (71°F). In December, the average temperature is 18°C (64°F) and there is relatively little rainfall, averaging just 19 mm (0.7 inches) over three days. Conversely, July is much wetter, averaging 51 mm (2.0 inches) of precipitation across 11 days, and it experiences higher humidity levels at 76%. For more specific details on July's weather conditions, you can visit Mount Barker weather in July.

When comparing the weather between December and August, it’s evident that December tends to be much warmer, with average temperatures ranging from a minimum of 5°C to a maximum of 38°C, while August’s temperatures are cooler, averaging between 0°C and 24°C. Additionally, December experiences significantly less precipitation, with only 19 mm over just three days, compared to August's 80 mm spread over twelve days. Humidity levels are relatively similar, with December at 69% and August at 75%. For a more detailed look at August weather, you can visit Mount Barker weather in August.

In December, Mount Barker experiences warmer temperatures with a minimum of 5°C (42°F) and an average high of 38°C (101°F), compared to the cooler September, where temperatures range from a minimum of 0°C (33°F) to a maximum of 28°C (83°F). Additionally, December is drier, with only 19 mm (0.7 in) of precipitation over three days, while September sees significantly more rain at 55 mm (2.2 in) spread across ten days. Humidity levels remain relatively high in both months, though slightly higher in September at 74% compared to December's 69%. For a detailed look at September weather, you can visit Mount Barker weather in September.

When comparing the weather in December and October, December tends to be warmer overall, with average temperatures reaching 18°C (64°F) compared to October's 14°C (57°F). The maximum temperature in December can soar to 38°C (101°F), significantly higher than October's peak of 31°C (88°F). However, October experiences more precipitation, with 39 mm (1.5 in) over 10 days, while December only sees 19 mm (0.7 in) across 3 days. Humidity remains relatively consistent, with October at 70% and December at 69%. For more details on October weather specifics, you can check Mount Barker weather in October.

In December, the weather experiences a slight warming trend compared to November, with minimum temperatures averaging around 5°C (42°F) and maximum temperatures reaching up to 38°C (101°F). The average temperature in December is 18°C (64°F), which is a notable increase from November's average of 15°C (59°F). Precipitation also decreases in December, totaling 19 mm (0.7 in) over just 3 days, while November sees higher rainfall at 31 mm (1.2 in) spread over 6 days. Humidity remains comparable, with December at 69% and November at 68%. For more detailed information on November's weather, visit 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 marks a notable shift in weather patterns, showcasing the warmth of summer with maximum temperatures soaring to a sizzling 38°C. Unlike the cooler months, this time of year brings a delightful average of 18°C, making outdoor activities particularly enjoyable. Despite having a few wet days, with total precipitation around 19 mm, the overall ambiance is decidedly drier and sunnier compared to previous months. Humidity levels hover around 69%, creating a balmy atmosphere that enriches the summer experience. For those looking to explore what the season brings, take a dive into the details at Mount Barker Climate.