Last updated: August 31, 2025
In December, Greymouth, New Zealand experiences a mild yet captivating climate, with maximum temperatures reaching 24°C (75°F) and an average of 16°C (61°F). While the minimum dips to 6°C (43°F), the humidity hangs notably high at 84%, creating a lush atmosphere. This month is marked by significant rainfall, accumulating to 256 mm (10.1 in) over about 17 days, making it a vital period for the region's flourishing landscapes. Travelers should be prepared for a mix of sunny days and gentle showers, enhancing the picturesque charm of Greymouth and its surrounding beauty.
In Greymouth, New Zealand, December heralds the arrival of the summer season, showcasing mild temperatures that entice both locals and visitors alike. With a minimum temperature of 6°C (43°F) and a pleasant average of 16°C (61°F), the weather is comfortably warm, peaking at around 24°C (75°F) during the day. This marks a notable increase in warmth compared to the preceding months, where temperatures gradually rise from the cooler averages of late spring. December's inviting climate creates an ideal backdrop for outdoor adventures, making it a prime time to explore the stunning landscapes that Greymouth has to offer.
In December, Greymouth experiences significant rainfall, with 256 mm (10.1 in) of precipitation accumulating over 17 days. This marks a continuation of the region’s wet trend as the year draws to a close, closely following November's total of 257 mm (10.1 in). The rainfall during December reflects a pattern of consistency, as the average for the month aligns closely with the preceding months of November and October. Notably, December's precipitation sits comfortably within the higher range of the annual totals, indicating that Greymouth remains vibrant and lush during this festive season. As summer begins in the Southern Hemisphere, the combination of frequent rainfall and mild temperatures sets the stage for a dynamic and colorful landscape.
In Greymouth, New Zealand, December marks a slight dip in humidity, settling at 84% after a gradual decline from the peak of 87% seen during the winter months. This month’s humidity closely reflects trends established in late spring, as the area transitions from the cooler, more humid winter to the warmer, albeit still damp, summer conditions. With humidity levels remaining consistently high throughout the year, December's measurement aligns well with the overall pattern observed, indicating a resilient coastal climate that remains lush and vibrant even as festive activities ramp up in the heart of summer.
In December, Greymouth experiences a UV Index of 12, placing it in the extreme exposure category with a burn time of just 10 minutes. This trend of high UV levels continues from November, which also recorded a very high index, suggesting that summer's peak intensity is upon the region. Following this period, UV levels typically begin to decrease in January and February, where they remain at a staggering 13. As the year progresses into autumn and winter, the index gradually declines, reflecting the natural ebb of sunlight as daylight hours shorten. For those planning outdoor activities, it's essential to stay informed about the changing UV conditions. For more details on UV levels, visit Greymouth UV Index.
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In December, Greymouth basks in a glorious average of 302 sunshine hours, making it the sunniest month of the year. This remarkable surge in daylight stands in stark contrast to the shorter days of winter months, such as June's meager 163 hours. As the year winds down, the transition from the cooler seasons is evident, with December's hours soaring above the mid-year lows, creating a vibrant atmosphere perfect for outdoor activities. This trend of increasing sunlight continues from spring into summer, with November already showcasing 268 hours—a clear precursor to the sun-soaked days that December promises. The gradual climb in sunshine throughout the latter half of the year certainly makes Greymouth a delightful destination for those seeking warmth and brightness as the calendar year concludes.
In Greymouth, New Zealand, the likelihood of sunny weather in December takes a dip, with only a 20% chance of sunshine gracing the skies. This marks one of the lowest probabilities throughout the year, showcasing a trend that sees brighter days peaking in the summer months of February and March, where sunshine chances reach 35% and 33% respectively. As the year progresses towards December, the likelihood of sun wanes, with notable drops in October and December when sunshine becomes less frequent. Therefore, while December may bring festive cheer, it often does so under a blanket of clouds rather than sunshine.
As December unfolds in Greymouth, New Zealand, residents are treated to a delightful 15 hours of daylight, marking the peak of the summer season. This month stands out after a gradual shift from 14 hours in November, reflecting the longest days of the year. Following this pinnacle of brightness, the daylight hours progressively decline, with January still basking in a generous 14 hours before entering the shorter days of early autumn. The trend reveals a rhythmic cycle where the days lengthen steadily from winter's brief 9 hours in June, July, and August, ascending towards the vibrant summer months. As the years pass, this warm December sunlight invites outdoor adventures and festivities, celebrating the natural beauty of Greymouth amidst its stunning landscapes.
As December arrives in Greymouth, New Zealand, the wind picks up momentum, averaging a brisk 3.0 m/s (7 mph). This slight increase from November's 2.6 m/s (6 mph) marks a notable trend as the year winds down, with December often boasting some of the higher wind speeds seen since September, which recorded 3.1 m/s (7 mph). This seasonal gustiness feels invigorating, contrasting with the more serene conditions of the earlier months, where wind speeds hovered around 2.0 to 2.6 m/s (5–6 mph). As summer approaches, the shifting winds in Greymouth create a dynamic atmosphere, inviting both locals and visitors to revel in the refreshing coastal breezes.
Weather in Greymouth varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Greymouth, focusing on differences in temperature, rainfall, humidity, and UV levels.
In December, Greymouth experiences a mild climate with temperatures ranging from a minimum of 6°C (43°F) to a maximum of 24°C (75°F) and an average temperature of 16°C (61°F). The month is quite wet, with total precipitation reaching 256 mm (10.1 in) over 17 days, contributing to a high humidity level of 84%.
In contrast, January sees a slight increase in temperatures, with a minimum of 7°C (45°F) and a maximum of 26°C (80°F), maintaining an average of 16°C (62°F). The precipitation decreases to 202 mm (7.9 in) spread over 15 days, resulting in a slightly lower humidity of 81%. For more details about what to expect in January, check out Greymouth weather in January.
December and February in Greymouth exhibit notable differences in weather patterns. December experiences slightly cooler temperatures, with an average of 16°C (61°F) compared to February's warmer average of 17°C (62°F). However, February sees higher maximum temperatures, reaching up to 28°C (83°F) while December peaks at 24°C (75°F). Precipitation also varies, with December receiving 256 mm (10.1 in) over 17 days, while February has a reduced rainfall of 175 mm (6.9 in) across 13 days. Humidity levels are also slightly lower in February at 79%, compared to December's 84%. For more detailed information, you can check Greymouth weather in February.
December and March in Greymouth share similar temperature ranges, with both months featuring minimum temperatures around 6°C (43°F) and average highs reaching up to 24°C (75°F). However, December tends to be wetter, experiencing about 256 mm (10.1 in) of precipitation over 17 days, whereas March receives slightly less rain at 213 mm (8.4 in) over 15 days. This leads to a marginal difference in humidity levels as well, with December sitting at 84% compared to March's 81%. For more specific insights, you can check the Greymouth weather in March.
In December, the weather typically features warmer temperatures, with a minimum of 6°C (43°F) and an average of 16°C (61°F), peaking at a comfortable 24°C (75°F). However, it also sees higher precipitation levels, with about 256 mm (10.1 in) spread over 17 days. The humidity remains high at 84%. In contrast, April experiences slightly cooler conditions, with a minimum of 2°C (36°F), an average of 13°C (56°F), and a maximum of 22°C (72°F). April also has lower precipitation totals at 217 mm (8.5 in) over 15 days, while maintaining the same humidity level of 84%. For more details on the climate in April, you can visit Greymouth weather in April.
In December, temperatures in Greymouth range from a minimum of 6°C (43°F) to a maximum of 24°C (75°F), with an average of 16°C (61°F). The month experiences considerable rainfall, totaling 256 mm (10.1 in) over approximately 17 days, and boasts a high humidity level of 84%. Conversely, May brings cooler temperatures, with minimums dropping to 0°C (33°F) and maximums reaching 19°C (67°F), resulting in an average of 11°C (52°F). Rainfall in May is slightly lower at 238 mm (9.4 in), occurring over about 16 days, while humidity remains relatively high at 87%. For more detailed information, check out Greymouth weather in May.
In December, Greymouth experiences a warmer climate, with temperatures ranging from a minimum of 6°C (43°F) to a maximum of 24°C (75°F) and an average of 16°C (61°F). This month also sees significant rainfall, totaling 256 mm (10.1 in) over approximately 17 days, accompanied by a high humidity level of 84%. In contrast, June brings cooler temperatures, with a minimum of 0°C (33°F) and a maximum of 18°C (65°F), averaging around 9°C (48°F). The precipitation is lower at 134 mm (5.3 in) over about 12 days, though humidity rises slightly to 87%. For more details, you can check Greymouth weather in June.
When comparing the weather in December and July, December tends to be warmer with temperatures ranging from a minimum of 6°C (43°F) to a maximum of 24°C (75°F), while July experiences cooler conditions, with temperatures peaking at 15°C (60°F). Both months see significant rainfall, with December receiving slightly more at 256 mm (10.1 in) compared to July's 251 mm (9.9 in), albeit with just one additional rainy day in December (17 days versus July's 16 days). Additionally, humidity levels are relatively high in both months, hovering around 84% in December and slightly higher at 87% in July. For more details on July's weather, you can check out Greymouth weather in July.
When comparing the weather in December and August, December offers warmer temperatures with a minimum of 6°C (43°F) and an average that reaches 16°C (61°F), peaking at a maximum of 24°C (75°F). In contrast, August experiences cooler conditions, with temperatures ranging from a minimum of 0°C (33°F) to a maximum of 17°C (63°F), averaging only 9°C (49°F). Precipitation levels are relatively close, with December receiving 256 mm (10.1 in) over 17 days and August experiencing 237 mm (9.3 in) across 20 days. Interestingly, the humidity in both months remains high, at 84% in December and slightly higher at 85% in August. For more detailed insights on August weather, you can refer to Greymouth weather in August.
The weather in December is generally warmer than in September, with average temperatures ranging from a minimum of 6°C (43°F) to a maximum of 24°C (75°F), compared to September's range of 0°C (32°F) to 18°C (64°F). However, both months experience similar levels of precipitation, with December receiving 256 mm (10.1 in) and September slightly more at 262 mm (10.3 in), both spread over 17 days. Humidity levels are also comparably high, with December at 84% and September slightly higher at 85%. For a more detailed look at September weather, you can check Greymouth weather in September.
In Greymouth, December weather is generally warmer than in October, with average temperatures ranging from a minimum of 6°C (43°F) to a maximum of 24°C (75°F), compared to October's range of 2°C (36°F) to 20°C (68°F). December also sees increased rainfall, with 256 mm (10.1 in) over 17 days, while October has slightly less precipitation at 231 mm (9.1 in) over 20 days. Despite the minor differences in precipitation, both months share the same humidity level of 84%. For a more detailed look at October's climate, you can refer to Greymouth weather in October.
In comparing the weather between November and December, we see that December experiences slightly higher temperatures, with averages of 16°C (61°F) compared to November's 14°C (57°F). Both months receive similar amounts of precipitation, with December recording 256 mm (10.1 in) over 17 days, just edging out November's 257 mm (10.1 in) over 16 days. Humidity levels also increase slightly in December, reaching 84% compared to November's 82%. For more detailed information, you can check Greymouth weather in November.
As December rolls into Greymouth, the weather takes on a delightful warmth that sets it apart from the cooler months. With average temperatures rising significantly, days become more enjoyable, inviting outdoor activities and exploration. However, this pleasant warmth comes with its share of rain, as the region experiences a notable increase in precipitation, making it one of the wetter months of the year. With humidity hovering around 84%, the air feels lush and vibrant, contributing to the region's lush landscapes. Overall, December offers a unique blend of warmth and moisture that creates a lively summer atmosphere, making it an ideal time to experience the best of Greymouth's natural beauty. For more detailed insights, check out Greymouth Climate.