December Weather in Mandurah, Australia

Last updated: February 26, 2025

December in Mandurah, Australia, offers a vibrant summer experience with maximum temperatures soaring to 38°C (100°F), while the average hovers around a pleasant 22°C (72°F). The nights cool down to a refreshing minimum of 9°C (49°F), providing a delightful contrast. Enjoying moderate humidity at 53%, residents and visitors can expect limited precipitation, totaling just 9 mm (0.4 in) over 2 days. This combination of warm weather and slight moisture makes December an ideal time to explore the stunning coastal attractions that Mandurah has to offer.

December Temperature in Mandurah

December in Mandurah, Australia, marks the onset of summer, showcasing a delightful range of temperatures that perfectly capture the season's warmth. With minimum temperatures around 9°C (49°F), the nights remain pleasantly cool, while daytime averages soar to 22°C (72°F). The **maximums can reach a sizzling 38°C (100°F), making it one of the hottest months of the year. This significant rise in temperature compared to the preceding months signals a transition, inviting locals and visitors alike to embrace outdoor activities and beach outings. As the year closes, the climatic charm encapsulated in December embodies the vibrant summer spirit that defines Mandurah.

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

The chart illustrates December temperature patterns in Mandurah, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec737372666158575759616671
Data source: Temperature data for Mandurah 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 Mandurah

In Mandurah, Australia, December marks a notable decline in precipitation, with only 9 mm (0.4 in) recorded over just 2 days. This significant drop contrasts sharply with the wetter months preceding it, particularly June and July, which see 122 mm (4.8 in) and 134 mm (5.3 in), respectively. As summer approaches, the consistently lower rainfall in December highlights a clear trend towards dry conditions, setting the stage for the sun-drenched days that characterize the Australian summer. The easing of rain not only shifts the landscape but also invites locals and visitors to embrace outdoor activities, celebrating the mild and pleasant climate with open skies.

December Precipitation Trends in Mandurah

The chart displays monthly precipitation patterns in Mandurah, 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.
JanFebMarAprMayJunJulAugSepOctNovDec23542425651221341074842279
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Mandurah

In December, Mandurah experiences a humidity level of 53%, marking a notable decrease from the peak of 77% seen in the mid-year months of June and July. This reduction reflects a gradual cooling trend as the year winds down, with humidity beginning to decline from the late spring highs of 72% in May and 70% in April. With December's humidity returning closer to the lighter levels typified at the year's start, such as 52% in January, it's evident that the region transitions into a drier phase as summer approaches. While humidity fluctuates throughout the year, December illustrates a shift towards more comfortable conditions, inviting both locals and visitors to enjoy the balmy beaches and outdoor activities that Mandurah has to offer.

December Average Humidity in Mandurah

This chart illustrates the average monthly humidity levels in Mandurah, 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.
JanFebMarAprMayJunJulAugSepOctNovDec53%55%59%70%72%77%77%75%71%63%56%53%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Mandurah

In Mandurah, Australia, December brings a UV Index of 14, categorizing it as extreme and marking a return to the higher levels of sun intensity seen in the previous summer months. Much like January and February, where the UV levels peak at 14, locals and visitors alike must remain vigilant, as the burn time is limited to just 10 minutes. The trend throughout the year indicates a significant drop in UV levels during the winter months, where the index falls to a moderate 4 in June and July, but the heat returns with a vengeance as December approaches. As the year wraps up, it's essential to understand these fluctuations to ensure safe sun exposure. For more detailed insights, check out the Mandurah UV Index.

Maximum UV Index Levels in Mandurah for December

The chart shows the monthly maximum UV Index (UVI) for Mandurah 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.
JanFebMarAprMayJunJulAugSepOctNovDec141411864468111314
Data source: Mandurah 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 Mandurah

December brings a radiant conclusion to the year in Mandurah, Australia, with an impressive total of 384 sunshine hours. This peak brightness not only highlights the city's fantastic summer climate but also showcases a significant upward trend throughout the year. As days lengthen from October's 327 hours to December's 384, residents and visitors alike bask in the delightful warmth of the sun, making it the sunniest month on record. Following a gentle decline during the cooler autumn months, where sunshine dipped below 300 hours, December's brilliance invites outdoor adventures and celebrations, perfectly encapsulating the essence of a vibrant Australian summer.

Monthly Sunshine Duration in Mandurah: December Highlighted

The December sunshine duration represents the total number of hours Mandurah 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.
JanFebMarAprMayJunJulAugSepOctNovDec310h317h323h290h277h260h271h285h295h327h352h384h
Data source: Mandurah December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Mandurah During December

In Mandurah, Australia, December marks a delightful shift towards sunnier weather, boasting a 78% chance of sunshine. This spike in sunny days follows a gradual downward trend from the warmth of the summer months, where January starts strong at 75%, only to see a decline through the autumn. However, as the year ends, the likelihood of clear skies rises again, surpassing both November's 65% and the cooler months of May through October. This trend highlights December as an ideal time for outdoor activities, as the likelihood of basking in the sun is at its peak, promising residents and visitors alike a beautiful finish to the year.

Percentage of Sunny Days in December in Mandurah

The chart illustrates the percentage of sunny days in Mandurah 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 Mandurah experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec75%71%59%54%42%51%39%55%65%48%65%78%
Data source: Mandurah December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Mandurah in December

In Mandurah, Australia, December marks the peak of daylight, with 14 hours of sunshine illuminating the summer skies. This vibrant month follows a gradual decline from 14 hours in January, showcasing a consistent pattern of shorter days as the year progresses. As we transition from the long days of summer to the cooler seasons, daylight decreases steadily to 12 hours in March and then dips further to 10 hours from May through August. Interestingly, daylight begins to increase again in September, rising incrementally to 13 hours by November before returning to that summer high of 14 hours. This cyclical rhythm of daylight not only highlights the seasonal shifts but also invites residents and visitors alike to bask in the abundant sunshine of Mandurah's summer.

Average Daylight Hours in Mandurah for December

The chart illustrates the variation in daylight duration in Mandurah throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec14h13h 13m12h 15m11h 15m10h 25m10h 1m10h 14m10h 56m11h 53m12h 53m13h 46m14h 14m
Data source: Mandurah daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Mandurah

As December rolls into Mandurah, Australia, the weather transitions into a lively breeze, with an average wind speed of 5.6 m/s (13 mph). This subtly aligns with the trend of oscillating wind patterns throughout the year. The average speeds are notably lower during the mid-year months, peaking in July at 6.2 m/s (14 mph) when winter’s strength grips the region. As the year wanes, the wind begins to whisper again, reminiscent of the gentle currents felt in the warmer months of January and February, both steadying at 6.0 m/s (13 mph). December’s refreshing winds offer a delightful precursor to summer, hinting at the balanced climate that characterizes this beautiful coastal town.

Average December Wind Speed in Mandurah

The chart displays monthly wind speed patterns in Mandurah, 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.
JanFebMarAprMayJunJulAugSepOctNovDec6.05.74.54.04.34.56.24.84.54.85.15.6 m/s
Data source: Mandurah December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Mandurah Compares to Other Months

The weather in Mandurah 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 Mandurah and find detailed weather information for every month.

In December, temperatures in Mandurah range from a minimum of 9°C (49°F) to a scorching maximum of 38°C (100°F), with an average of 22°C (72°F). The month experiences minimal precipitation with just 9 mm (0.4 in) over 2 days, resulting in relatively low humidity levels of 53%. By contrast, January sees a slight increase in both minimum and average temperatures, starting at 12°C (53°F) and averaging 23°C (73°F), while the maximum temperature drops to 36°C (96°F). January features more rainfall, totaling 22 mm (0.9 in), but notably has no rainy days and maintains a similar humidity level of 52%. For more detailed insights, check Mandurah weather in January.

In comparing the weather between December and February, December experiences slightly lower average temperatures, with a minimum of 9°C (49°F) and a maximum of 38°C (100°F). In contrast, February sees a milder range, with a minimum of 13°C (55°F) and a maximum of 36°C (96°F). Precipitation is notably higher in February, totaling 53 mm (2.1 in) over three days, compared to December's modest 9 mm (0.4 in) over two days. The humidity remains relatively consistent, with December at 53% and February slightly higher at 55%. For more detailed insights, you can check Mandurah weather in February.

In comparing the weather between December and March, both months exhibit relatively warm temperatures with an average of 22°C (72°F). However, December experiences a slightly higher maximum temperature of 38°C (100°F) compared to March's 34°C (94°F). The humidity also increases in March, rising to 59% from December's 53%. Notably, March sees more precipitation, with 24 mm (0.9 in) over 5 days, compared to December's 9 mm (0.4 in) over just 2 days. For further details on March weather, you can check out Mandurah weather in March.

In comparing the weather of December and April, we notice some notable differences. December boasts warmer temperatures, with an average high of 38°C (100°F), while April tends to be milder with an average high of 33°C (91°F). Humidity also plays a role, as December has a lower humidity level at 53%, compared to the higher 70% humidity experienced in April. Precipitation is another factor, with December receiving only 9 mm (0.4 in) over two days, whereas April sees a significant increase in rainfall at 25 mm (1.0 in) over the same duration. For more details on the weather patterns in April, you can check Mandurah weather in April.

December and May exhibit contrasting weather patterns. In December, temperatures range from a minimum of 9°C (49°F) to a maximum of 38°C (100°F), averaging a warm 22°C (72°F), with relatively low precipitation of 9 mm (0.4 in) over just 2 days and humidity at 53%. In contrast, May experiences cooler conditions, with temperatures ranging from a minimum of 7°C (44°F) to a maximum of 27°C (80°F), averaging only 16°C (61°F). This month also sees significantly higher rainfall, with 65 mm (2.6 in) spread across 8 days and a higher humidity level of 72%. For more details, check Mandurah weather in May.

Comparing the weather in December and June reveals notable differences in temperature and precipitation patterns. In December, temperatures range from a minimum of 9°C (49°F) to a maximum of 38°C (100°F), with an average of 22°C (72°F). The month is relatively dry, experiencing only 9 mm (0.4 in) of precipitation over just 2 days and maintaining a humidity level of 53%. In contrast, June is notably cooler, with temperatures ranging from a minimum of 7°C (46°F) to a maximum of 24°C (75°F) and an average of 15°C (59°F). This month sees a significant increase in rainfall, totaling 122 mm (4.8 in) over 12 days, and a higher humidity of 77%. For more detailed insights, check out Mandurah weather in June.

When comparing December and July weather, December typically boasts warmer temperatures, with averages reaching a pleasant 22°C (72°F) and maximums soaring up to 38°C (100°F). In contrast, July experiences cooler conditions, with average temperatures around 14°C (58°F) and maximums rarely exceeding 22°C (71°F). Additionally, December tends to be drier, with only 9 mm (0.4 in) of rainfall over just 2 days, while July is significantly wetter, receiving 134 mm (5.3 in) of precipitation across 17 days. This increased rainfall in July contributes to a higher humidity of 77%, compared to December's more comfortable 53%. For more detailed insights, you can check Mandurah weather in July.

December weather is typically warmer and drier than that of August. With minimum temperatures around 9°C (49°F) and maximums reaching up to 38°C (100°F), December averages a comfortable 22°C (72°F) with only 9 mm of precipitation over just 2 days. In contrast, August sees cooler temperatures, with a minimum of 6°C (44°F) and a maximum of 24°C (76°F), averaging only 14°C (57°F) while experiencing significantly higher rainfall of 107 mm over 12 days and greater humidity at 75%. For more detailed insights on August weather, you can visit Mandurah weather in August.

When comparing the weather in December and September, notable differences emerge. December showcases much warmer temperatures, with a minimum of 9°C (49°F) and a maximum of 38°C (100°F), while September’s range is cooler, with a minimum of 6°C (43°F) and a maximum of 26°C (80°F). Rainfall also varies significantly; December experiences only 9 mm (0.4 in) of precipitation over 2 days, whereas September sees a much wetter month with 48 mm (1.9 in) over 8 days. Additionally, the humidity levels highlight the contrast, with December at 53% and September at a more humid 71%. For a closer look at September’s climatic conditions, you can visit Mandurah weather in September.

When comparing the weather in December and October, December boasts warmer temperatures, with averages reaching up to 22°C (72°F) and maximums climbing as high as 38°C (100°F), while October sees a cooler average of 16°C (62°F) and maximums of 31°C (88°F). Additionally, December experiences significantly less rainfall with only 9 mm (0.4 in) over just 2 days, in stark contrast to October's 42 mm (1.7 in) over 6 days. The humidity is also lower in December at 53%, compared to October's 63%. For more detailed information, you can check Mandurah weather in October.

In December, the weather features slightly warmer temperatures, with an average high of 38°C (100°F) compared to November's maximum of 34°C (93°F). Both months share similar minimum temperatures of 9°C, but December enjoys a higher average temperature of 22°C (72°F) versus November's 19°C (66°F). Precipitation levels drop significantly in December to just 9 mm (0.4 in) over 2 days, while November experiences 27 mm (1.1 in) of rain across 3 days. Humidity is relatively stable, though slightly lower in December at 53% compared to November's 56%. For more detailed insights, you can check Mandurah weather in November.

Compare Mandurah's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Mandurah

December in Mandurah brings a vibrant shift, with warm temperatures dominating the landscape and reaching peaks that make it one of the hottest months. The average warmth, coupled with a sharp drop in precipitation, results in drier conditions compared to the rest of the year. While the humidity remains manageable, the occasional burst of heat, juxtaposed with the mild nights, creates a unique climate tapestry that beckons outdoor enthusiasts and sun seekers alike. For a deeper understanding of how Mandurah's weather patterns evolve throughout the year, explore Mandurah Climate.