December Weather in Timaru, New Zealand

Last updated: August 31, 2025

December in Timaru, New Zealand offers a vibrant mix of summer warmth and occasional rain. With a maximum temperature reaching 25°C (78°F) and an average of 15°C (59°F), the month is characterized by comfortable days ideal for outdoor activities. However, visitors should be prepared for cooler nights, as temperatures can dip to a minimum of 8°C (47°F). Rainfall is also a factor, with 104 mm (4.1 in) of precipitation spread across 16 days, resulting in a humidity level of 81% that can enhance the lush scenery. Whether you're exploring the coastal beauty or visiting local attractions, December presents a delightful blend of warmth and freshness in Timaru.

December Temperature in Timaru

In December, Timaru, New Zealand experiences a delightful shift as summer takes hold, offering a warm embrace with temperatures ranging from a minimum of 8°C (47°F) to a maximum of 25°C (78°F). The average temperature sits comfortably at 15°C (59°F), reflecting a trend of steadily rising warmth compared to the preceding months. This rise follows the cooler spring transition, where December stands out with its inviting warmth, inviting locals and visitors alike to enjoy the long, sun-soaked days. As the holiday season approaches, the pleasant temperatures make it an ideal time for outdoor activities and festivities, showcasing the charm of Timaru in full summer bloom.

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

The chart illustrates December temperature patterns in Timaru, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Timaru, December typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec616058544945434548515559
Data source: Temperature data for Timaru 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 Timaru

In December, Timaru experiences a notable increase in precipitation, mirroring the wettest month of November with 104 mm (4.1 in) of rainfall. This aligns with a trend of higher rainfall during the late spring and early summer months, often leading to vibrant, lush landscapes. With 16 days of precipitation recorded, December showcases a bustling rainfall pattern, reflecting a climate rich in moisture. This consistent wet weather, following November's peak, highlights the region's shift toward a more humid environment as the year draws to a close, setting the stage for a verdant summer ahead. Such patterns not only influence local ecosystems but also enhance the charm of Timaru during this time, making it a dynamic and picturesque seasonal period.

December Precipitation Trends in Timaru

The chart displays monthly precipitation patterns in Timaru, 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 Timaru, December typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec69887382454876464775105104
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Timaru

In December, Timaru experiences an average humidity of 81%, revealing a notable consistency in moisture levels as the year draws to a close. This month's humidity reflects a rise from the slightly drier conditions of November at 78%, suggesting a trend where humidity tends to peak during the late spring and summer months. Following the pattern established earlier in the year, the humidity in December aligns closely with the 81% recorded in April, indicating a stable atmospheric condition amidst the holiday festivities. Overall, the gradual increase from the year's lower humidity rates hints at the onset of warmer summer days, making December a month of refreshing coastal breezes in this charming New Zealand town.

December Average Humidity in Timaru

This chart illustrates the average monthly humidity levels in Timaru, 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 Timaru is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec79%76%78%81%84%85%85%84%83%80%78%81%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Timaru

In December, Timaru experiences a UV Index of 12, categorizing it as extreme with a quick burn time of just 10 minutes. This marks a continuation of high UV levels from the preceding months. Notably, the trend indicates that the summer months, from November to February, consistently feature extreme to very high exposures, which can be a stark contrast to the lower indices in the winter, where values drop to as low as 2. As the year shifts, it's crucial for residents and visitors to stay vigilant about sun protection, especially in the peak summer months. Ensure you're well-prepared and informed by checking the forecast on the Timaru UV Index.

Maximum UV Index Levels in Timaru for December

The chart shows the monthly maximum UV Index (UVI) for Timaru 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 Timaru typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec1312963223591012
Data source: Timaru 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 Timaru

December in Timaru, New Zealand, shines with an impressive 331 hours of sunshine, marking it as the sunniest month of the year. As the year draws to a close, daylight hours peak, creating vibrant and inviting conditions that contrast with the cooler and cloudier months preceding it. Following a steady increase in sunlight from May’s 199 hours, the trend towards longer days becomes evident, culminating in a notable surge from November to December. This rise not only reflects the welcoming warmth of the Southern Hemisphere's summer but also sets the stage for an array of outdoor activities amid the stunning coastal landscapes. As December shines brighter than any other month, it embodies the essence of a sun-soaked summer in Timaru, encouraging locals and visitors alike to revel in the natural beauty and warmth of this delightful season.

Monthly Sunshine Duration in Timaru: December Highlighted

The December sunshine duration represents the total number of hours Timaru 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.
JanFebMarAprMayJunJulAugSepOctNovDec277h297h267h231h199h156h180h216h250h281h313h331h
Data source: Timaru December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Timaru During December

In Timaru, New Zealand, the likelihood of sunny weather in December is at 27%, marking it as one of the less favorable months for sunshine. This trend reflects a gradual decline in sunny days as the year winds down, especially following the brightening peak of April with a 50% chance of sun. While December offers a slight increase in sunny days compared to the cooler winter months, it falls short compared to the potential warmth and brightness of early summer months, such as January and February, which boast chances of 37% and 33% respectively. As spring transitions into summer, the shift in weather patterns can lead to more variability, but December’s lower percentage suggests that residents and visitors should prepare for a mix of sun and clouds during this time.

Percentage of Sunny Days in December in Timaru

The chart illustrates the percentage of sunny days in Timaru 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 Timaru experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec37%33%37%50%41%25%34%42%48%28%30%27%
Data source: Timaru December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Timaru in December

In Timaru, New Zealand, the daylight duration reaches its apex in December, offering a generous 15 hours of sunlight. Following a gradual decline from January's peak, where daylight also spans 15 hours, the months progress towards the shorter days of winter, peaking in June with just 8 hours. As the year unfolds, light begins to return, gradually extending from the depths of winter through spring to December’s longest days. This rhythmic cycle not only marks the changing seasons but also highlights Timaru’s vibrant summers, inviting residents and visitors alike to bask in the abundant daylight.

Average Daylight Hours in Timaru for December

The chart illustrates the variation in daylight duration in Timaru throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec15h 4m13h 52m12h 21m10h 49m9h 31m8h 52m9h 12m10h 19m11h 46m13h 19m14h 42m15h 26m
Data source: Timaru daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Timaru

As December ushers in the summer season in Timaru, New Zealand, it brings a noticeable increase in wind activity with an average speed of 4.2 m/s (9 mph). This slight uptick marks a transition from the relatively calm conditions of the earlier months, particularly March and June, when the winds were at their lowest. Interestingly, the wind speeds in December are comparable to those recorded in October and September, which both hover around 4.0 m/s. This pattern suggests that as the year draws to a close, the wind begins to stir, setting the stage for the vibrant energy that summer brings. Overall, December's breezy conditions serve as a reminder of nature's dynamic rhythms in this picturesque coastal town.

Average December Wind Speed in Timaru

The chart displays monthly wind speed patterns in Timaru, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.33.63.33.63.83.03.23.94.04.13.74.2 m/s
Data source: Timaru December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Timaru Compares to Other Months

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

In December, temperatures range from a minimum of 8°C (47°F) to a maximum of 25°C (78°F), with an average of 15°C (59°F). The month also sees considerable precipitation, totaling 104 mm (4.1 in) over 16 days and maintaining a high humidity level of 81%. In contrast, January offers slightly warmer temperatures, with a minimum of 9°C (48°F), an average of 16°C (61°F), and a maximum of 26°C (80°F). January is notably drier, receiving only 69 mm (2.7 in) of rain over 12 days, and maintaining a similar humidity of 79%. For more detailed insights, check out Timaru weather in January.

In comparing December and February weather, we see some notable differences. December features a mild temperature range with a minimum of 8°C (47°F), an average of 15°C (59°F), and a maximum of 25°C (78°F). It also experiences significant precipitation at 104 mm (4.1 in) over 16 days, contributing to higher humidity levels at 81%. In contrast, February sees a slight increase in average temperature, with a minimum of 8°C (46°F), an average of 16°C (60°F), and a maximum of 27°C (81°F). Precipitation decreases to 88 mm (3.5 in) over just 10 days, resulting in lower humidity at 76%. For more details on February conditions, you can check Timaru weather in February.

In comparing the weather of December and March, both months showcase mild temperatures, with December slightly warmer overall. December features a minimum of 8°C (47°F) and an average of 15°C (59°F), with highs reaching 25°C (78°F). In contrast, March has a minimum temperature of 7°C (45°F) and an average of 15°C (58°F), peaking at 24°C (75°F). December also experiences more precipitation, totaling 104 mm (4.1 in) over 16 days, while March sees less rainfall at 73 mm (2.9 in) over 11 days. Humidity levels are similar, with December at 81% and March at 78%. For a more detailed look at the weather patterns, you can check Timaru weather in March.

In December, the weather is generally warmer with temperatures ranging from a minimum of 8°C (47°F) to a maximum of 25°C (78°F), averaging around 15°C (59°F). Precipitation is relatively high, totaling 104 mm (4.1 in) over 16 days, while humidity remains consistent at 81%. In contrast, April experiences cooler temperatures, with a minimum of 5°C (41°F) and a maximum of 21°C (71°F), averaging 12°C (54°F). Rainfall is lower in April at 82 mm (3.2 in) spread over 12 days, yet humidity persists at 81%. For more detailed information about the weather in April, you can view Timaru weather in April.

The weather in December is generally warmer and wetter compared to May. With temperatures ranging from a minimum of 8°C (47°F) to a maximum of 25°C (78°F) and an average of 15°C (59°F), December enjoys a more tropical feel. It also sees significant rainfall, with 104 mm (4.1 in) over 16 days, contributing to a humidity level of 81%. In contrast, May experiences cooler temperatures, with a minimum of 2°C (35°F) and a maximum of 18°C (64°F), resulting in an average of 10°C (50°F). The month is drier, with only 45 mm (1.8 in) of precipitation over 10 days, and a slightly higher humidity of 84%. For more detailed insights on May weather, visit Timaru weather in May.

In December, the weather is typically much warmer, with temperatures ranging from a minimum of 8°C (47°F) to a maximum of 25°C (78°F) and an average temperature of 15°C (59°F). This month also sees more rainfall, with 104 mm (4.1 in) of precipitation over approximately 16 days, while the humidity averages around 81%. In contrast, June experiences cooler temperatures, with lows dipping to 0°C (33°F) and highs reaching only up to 16°C (61°F), averaging at 7°C (45°F). June is generally drier, with only 48 mm (1.9 in) of precipitation across about 10 days, and the humidity is slightly higher at 85%. For more insights on what to expect during this month, check out Timaru weather in June.

In December, temperatures in Timaru range from a minimum of 8°C (47°F) to a maximum of 25°C (78°F), resulting in an average temperature of 15°C (59°F). The month sees a significant amount of precipitation, with 104 mm (4.1 in) of rain over 16 days, and humidity levels are relatively high at 81%. In contrast, July experiences much cooler temperatures, with a minimum of 0°C (32°F) and a maximum of 15°C (59°F), averaging just 6°C (44°F). Additionally, July has lower precipitation at 76 mm (3.0 in) over 10 days, with humidity slightly higher at 85%. For more detailed information, you can check Timaru weather in July.

When comparing the weather in December and August, December offers noticeably warmer temperatures, with an average of 15°C (59°F) and maximums reaching up to 25°C (78°F), whereas August is much cooler, with an average of just 7°C (46°F) and maximums only reaching 17°C (63°F). Additionally, December experiences higher precipitation, totaling 104 mm (4.1 in) over 16 days, while August sees significantly less rain at 45 mm (1.8 in) over 9 days. Humidity levels are relatively high in both months, with December at 81% and August slightly higher at 84%. For a closer look at conditions during August, visit Timaru weather in August.

In comparing the weather of December and September, it's clear that December provides a warmer experience. The average temperature in December reaches 15°C (59°F), with highs of 25°C (78°F), whereas September sees lower temperatures, averaging only 9°C (48°F) and peaking at 18°C (65°F). Additionally, December is considerably wetter, receiving 104 mm (4.1 in) of precipitation over 16 days, compared to September's 47 mm (1.8 in) spread across just 8 days. Despite slightly higher humidity in September at 83%, both months maintain a relatively humid atmosphere, with December at 81%. For those interested in more detailed weather patterns, you can check out Timaru weather in September.

December generally experiences warmer temperatures compared to October, with an average high of 25°C (78°F) in December versus 20°C (68°F) in October. The minimum temperature in December is also notably higher, at 8°C (47°F), compared to 3°C (38°F) in October. While both months see a similar number of rainy days, December has significantly higher precipitation, registering 104 mm (4.1 in) compared to October's 75 mm (2.9 in). Humidity levels remain comparable, with December slightly higher at 81% compared to October's 80%. Overall, December is characterized by warmer temperatures and increased rainfall, making it a contrasting month to the more moderate and drier October. For more details, you can visit Timaru weather in October.

In December, the weather is slightly warmer than in November, with average temperatures ranging from a minimum of 8°C (47°F) to a maximum of 25°C (78°F), compared to November's temperatures of 4°C (40°F) to 26°C (79°F). Both months feature similar levels of precipitation, with December receiving 104 mm (4.1 in) of rain over 16 days, while November sees 105 mm (4.1 in) over 13 days. Humidity levels are also a bit higher in December at 81%, compared to 78% in November. For more details on November's weather, you can check out Timaru weather in November.

Compare Timaru's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Timaru

December in Timaru offers a refreshing contrast to the cooler months, bringing warmer average temperatures and longer days filled with sunshine. With a maximum of 25°C, the weather beckons locals and visitors alike to embrace outdoor activities, though occasional rainfall—spanning about half the month—can keep the landscape lush and vibrant. The higher humidity levels create a unique tropical feel, adding a touch of warmth to the festive season. As you plan for December's charming environment, be sure to check out more about the seasonal transitions in Timaru Climate.