Last updated: February 25, 2025
In December, the Adelaide Hills region of Australia experiences a dynamic climate, characterized by a maximum temperature soaring to an impressive 43°C (109°F) and a more moderate average temperature of 19°C (67°F). Evening temperatures can dip as low as 6°C (44°F), creating a significant range. With only 17 mm (0.7 in) of precipitation over just 4 days, the humidity levels hover around 46%, offering a warm yet relatively dry atmosphere. This combination of high heat and low rainfall contributes to the region's vibrant summer landscape, making it an exciting time for outdoor activities and exploration.
In December, the Adelaide Hills experience a vibrant transition into summer, characterized by relatively warm temperatures that invite outdoor adventures. The month starts with a minimum temperature of 6°C (44°F), climbing to an average of 19°C (67°F) and peaking at a scorching 43°C (109°F). This trend highlights a significant warm-up from the cooler months preceding it, particularly November, which saw highs of 41°C (105°F). As the year draws to a close, residents and visitors alike can enjoy the lively atmosphere, perfect for exploring the stunning landscapes and vineyards that the region is renowned for, all while bearing in mind the potential for extreme heat. Overall, December in the Adelaide Hills is a month where warmth prevails, making it a perfect time for summer festivities and relaxation under the sun.
In December, the Adelaide Hills experience a brief respite from the intense precipitation that characterizes its winter months. With 17 mm (0.7 in) of rainfall spread across just 4 days, December's precipitation remains modest, hinting at the warm summer days to come. This contrasts sharply with the peak winter months, where July and August see significantly higher rainfall, accumulating 59 mm (2.3 in) and 68 mm (2.7 in) respectively. As the year draws to a close, the region's precipitation patterns reveal a clear trend: while the winter months are marked by increased rainfall, December serves as a transition, setting the stage for the drier conditions typical of January and February. This cyclical dance of wet and dry seasons highlights the diverse climatic character of the Adelaide Hills.
In the Adelaide Hills, humidity levels showcase a distinct seasonal pattern that reflects the region's climate characteristics. Starting the year with a relatively low humidity of 41% in January, the figures rise steadily, peaking at 76% during both June and July. This increase highlights the area's cool, moist winter months, which are soon followed by a gradual decline as spring approaches. Interestingly, December sees humidity drop to 46%, marking a return to the lower levels experienced at the year's outset. This cyclical trend underscores the dynamic shift in humidity, influenced by seasonal changes and climatic conditions, creating a rich tapestry of weather patterns throughout the year.
In December, the UV Index in the Adelaide Hills peaks at a striking 15, categorizing it as extreme and resulting in a burn time of just 10 minutes. This high level of UV exposure is consistent with the trend observed in the preceding months, particularly in January and February, where the index remained above 13. As the year winds down, individuals in the region should be particularly vigilant, as the intensity of UV radiation does not wane until cooler months begin. Observing the overall pattern, it's clear that while the summer months command the highest UV levels, even the moderate winter months of June and July see indices that warrant caution. Staying informed about these variations in UV exposure is crucial for outdoor enthusiasts and residents alike. For more in-depth insights, visit Adelaide Hills UV Index.
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December shines brightly in the Adelaide Hills, boasting an impressive 353 hours of sunshine, the highest of the year. This splendid month marks a striking contrast to the shorter, cooler days of winter, where sunlight dips to around 221 hours in June. As the year progresses, the daylight hours steadily increase, peaking in summer, with December eclipsing November's 312 hours and bringing a radiant close to the year. With the promise of long, sunny days, December in the Adelaide Hills is a time for outdoor gatherings, exploring nature, and soaking up the beautiful Australian sun, making it a cherished month for locals and visitors alike.
In December, the Adelaide Hills experience a notable uptick in sunny weather, with a promising 71% chance of sunshine, making it the month with the highest likelihood of clear skies. This increase is a refreshing contrast to the previous months, where sunshine probabilities dipped, especially in the winter months of May through July, which hovered around 35-40%. As spring transitions into summer, the trend continues upward, with December's probability significantly surpassing November's 42%. This shift not only heralds the arrival of warmer days but also captures the spirit of the festive season, inviting both locals and visitors to explore the stunning landscapes bathed in sunlight.
In the picturesque Adelaide Hills, Australia, the daylight duration takes on a rhythmic cycle throughout the year, reflecting the changing seasons. December, with its 14 hours of daylight, marks the peak of summer, providing ample opportunities to soak in the sun. As daylight gradually wanes, January and February also boast the same generous 14 hours, before a steady decline begins with March at 12 hours. By the time we reach winter, in June, daylight dips to its annual low of just 9 hours. This trend reverses as we transition into spring, where daylight begins to stretch again, peaking once more in the warmth of December. The gentle ebb and flow of sunlight not only influences the landscape but also enriches the vibrant outdoor culture of this beautiful region.
In December, the Adelaide Hills experience a gentle breeze with an average wind speed of 3.5 m/s (8 mph), marking a slight decline from the stronger gusts that dominate the winter months. Following the peak winds of July (4.7 m/s) and September (4.1 m/s), the transition into summer brings a softer, more temperate airflow. This decrease in wind strength is mirrored in the gradual decline from October's 3.7 m/s and November's 3.9 m/s averages, signaling a shift towards the warmer, calmer conditions typical of the Southern Hemisphere's summer. As December unfolds, the Adelaide Hills invite a more tranquil atmosphere, perfect for outdoor activities amidst the clear skies and vibrant landscapes.
The weather in Adelaide Hills 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 Adelaide Hills and find detailed weather information for every month.
December and January in the Adelaide Hills showcase slightly warmer temperatures, with January having an average temperature of 21°C (71°F) compared to December's 19°C (67°F). The minimum temperatures also rise from 6°C (44°F) in December to 9°C (49°F) in January, while the maximum temperatures remain relatively stable, peaking at 43°C (109°F) in December and 45°C (114°F) in January. Precipitation decreases from 17 mm (0.7 in) over four days in December to 15 mm (0.6 in) over just two days in January, contributing to lower humidity levels of 41% in January compared to 46% in December. For a detailed look at January's weather, you can visit Adelaide Hills weather in January.
In December, the weather boasts a wider temperature range, with a minimum of 6°C (44°F) and a maximum reaching up to 43°C (109°F), averaging around 19°C (67°F). The month experiences moderate precipitation of 17 mm (0.7 in) over about 4 days, while humidity remains steady at 46%. In contrast, February features slightly warmer temperatures, with a minimum of 8°C (47°F) and a maximum of 39°C (103°F), along with a similar average of 20°C (68°F). Precipitation increases slightly to 19 mm (0.8 in) but occurs over fewer days, just 3. Overall, both months maintain a consistent humidity level of 46%, but February tends to be a bit milder and drier compared to December. For more details, check Adelaide Hills weather in February.
When comparing the weather in December and March, both months exhibit warm temperatures, but with slight variations. December starts with a minimum temperature of 6°C (44°F) and can reach a maximum of 43°C (109°F), while March has a slightly higher minimum of 8°C (46°F) and peaks at 39°C (103°F). Both months have an average temperature of around 19°C (66-67°F), but December experiences slightly more dry weather with 17 mm (0.7 in) of precipitation over four days, compared to March's 13 mm (0.5 in) over just three days. Additionally, humidity levels are higher in March at 55%, compared to December's 46%. For more details on March weather, you can visit Adelaide Hills weather in March.
When comparing the weather in December and April, notable differences emerge. December typically boasts a wider temperature range, with minimums around 6°C (44°F), average highs reaching 19°C (67°F), and maximums soaring to 43°C (109°F). In contrast, April experiences slightly cooler temperatures, with minimums at 5°C (41°F), an average of 16°C (61°F), and a maximum of 35°C (95°F). Precipitation is also more prevalent in April, with an average of 27 mm (1.0 in) of rain over four days, compared to December's 17 mm (0.7 in) on the same number of days. Additionally, April has a higher humidity level of 66%, compared to December's 46%. For a more detailed overview, check out Adelaide Hills weather in April.
In December, temperatures vary significantly, with minimums around 6°C (44°F) and maximums reaching up to 43°C (109°F), making it a warm month overall, with an average temperature of 19°C (67°F). Precipitation is relatively low at 17 mm (0.7 in) over just 4 days, contributing to the lower humidity of 46%. In contrast, May experiences milder temperatures, with minimums around 3°C (38°F) and maximums of 27°C (81°F), resulting in a cooler average of 12°C (54°F). Additionally, May sees more rainfall, with 47 mm (1.8 in) spread over 9 days, leading to a higher humidity level of 73%. For a detailed look at the weather patterns during this month, you can visit Adelaide Hills weather in May.
In December, the weather is characterized by warm temperatures, with a minimum of 6°C (44°F) and soaring highs of up to 43°C (109°F), making it a much hotter month overall. Precipitation is relatively low, with only 17 mm (0.7 in) falling over about 4 days, and humidity levels sit at a comfortable 46%. In contrast, June presents a cooler climate, presenting a minimum temperature of 1°C (34°F) and an average high of 20°C (68°F). This month is also wetter, receiving about 45 mm (1.8 in) of rain spread over 10 days, alongside higher humidity at 76%. For a detailed look at what to expect, check out Adelaide Hills weather in June.
When comparing the weather in December and July, we see notable differences in temperature and precipitation. December boasts a much warmer climate, with average temperatures ranging from a minimum of 6°C (44°F) to a maximum of 43°C (109°F), alongside relatively low precipitation of 17 mm (0.7 in) spread over just 4 days and a humidity level of 46%. In contrast, July is significantly cooler, with an average temperature range of 1°C (34°F) to 19°C (67°F). It also experiences higher rainfall, averaging 59 mm (2.3 in) over 12 days, and a humidity level of 76%. For more insights on the weather specifics in July, you can check Adelaide Hills weather in July.
When comparing the weather in December and August, it's clear that these months present quite contrasting conditions. In December, temperatures can soar with a minimum of 6°C (44°F) and highs reaching up to 43°C (109°F), making it the warmer of the two months. In contrast, August experiences cooler temperatures, with a minimum of -1°C (31°F) and a maximum of 23°C (73°F). Additionally, December sees relatively low precipitation at 17 mm (0.7 in) over just 4 days, whereas August is much wetter, accumulating 68 mm (2.7 in) of rainfall across 13 days. This results in higher humidity in August at 70%, compared to December’s 46%. For more detailed insights, you can check Adelaide Hills weather in August.
When comparing the weather in December and September, notable differences emerge. December boasts much hotter temperatures, with minimums around 6°C (44°F) and highs reaching up to 43°C (109°F), while September offers a cooler range, with a minimum of 1°C (34°F) and a maximum of 29°C (84°F). Additionally, December experiences less precipitation, with only 17 mm (0.7 in) over 4 days, compared to September's 44 mm (1.7 in) over 10 days. Humidity is also lower in December at 46%, contrasting with the higher 65% humidity level seen in September. For more detailed insights, check out Adelaide Hills weather in September.
In comparing the weather between October and December, we see notable differences in temperature and precipitation patterns. December experiences higher temperatures with a minimum of 6°C (44°F), an average of 19°C (67°F), and a maximum that can reach a scorching 43°C (109°F). In contrast, October is cooler, with temperatures ranging from a minimum of 4°C (39°F) to an average of 14°C (58°F) and a maximum of 35°C (95°F).
Additionally, December has significantly less rainfall, with only 17 mm (0.7 in) over about 4 days, while October sees higher precipitation levels of 39 mm (1.5 in) across 7 days. The humidity is slightly higher in October at 51%, compared to 46% in December. For more detailed information on weather conditions in October, you can check the following link: Adelaide Hills weather in October.
In comparing the weather of December and November, December experiences slightly warmer temperatures, with a minimum of 6°C and a maximum of 43°C, while November has a minimum of 5°C and a maximum of 41°C. The average temperature in December rises to 19°C, compared to November’s 17°C. Notably, December also has significantly lower precipitation levels at 17 mm over 4 days, contrasting with November’s 41 mm over 7 days. Additionally, humidity in December averages around 46%, which is lower than November's 50%. For more detailed insights into November's weather, you can check Adelaide Hills weather in November.
In December, the Adelaide Hills experience a notable shift in weather, with warm temperatures leading the change. The month can soar to scorching highs of 43°C, creating a striking contrast with the cooler winter months. On average, residents enjoy pleasant daytime temperatures around 19°C, while nights cool down to a refreshing 6°C. The relatively low humidity of 46% and minimal rainfall, averaging just 17 mm over about 4 days, contribute to the dry heat typical of Australian summers. This makes December an ideal time for outdoor activities, but it's essential to stay hydrated and seek shade during the hottest parts of the day. For a comparative look at seasonal trends, explore further in Adelaide Hills Climate.