Last updated: August 31, 2025
In September, Greymouth, New Zealand, experiences a transition into spring with a maximum temperature reaching 18°C (64°F) and an average temperature of around 10°C (50°F). The minimum temperature can drop to a chilly 0°C (32°F), highlighting the region's variable climate. Rainfall is a significant feature of this month, with total precipitation amounting to 262 mm (10.3 in) spread over 17 wet days, contributing to a high humidity level of 85%. Visitors and locals alike should be prepared for both cool and damp conditions, making layers and waterproof gear essential for outdoor activities.
In September, Greymouth experiences a transition towards spring, bringing gradual warmth after the chilly winter months. The minimum temperature hovers around 0°C (32°F), while the average settles at a crisp 10°C (50°F), with highs reaching about 18°C (64°F). This marks a noticeable increase from the colder weeks of winter, suggesting a clear trend of rising temperatures as the region shifts from the depths of winter into the sunnier days of spring. As nature awakens, the milder weather invites both locals and visitors to embrace outdoor activities amidst Greymouth's stunning landscapes.
September in Greymouth, New Zealand, marks a significant uptick in rainfall, with precipitation reaching 262 mm (10.3 in) over the month, making it one of the wettest of the year. This increase is complemented by 17 days of rain, contributing to a lush landscape that characterizes the region. Following the drier months of June and July, September's showers pave the way for a vibrant spring ecosystem. Interestingly, this month outpaces both the preceding August, which saw 237 mm (9.3 in), and keeps pace with the upcoming October, hinting at a season rich in moisture. As Greymouth steps into spring, the consistent rainfall provides a refreshing contrast to the milder and occasionally drier winter months, setting the stage for a flourishing environment.
In September, Greymouth experiences a notable consistency in its humid climate, with humidity levels at 85%. This figure aligns closely with the preceding months of August and the subsequent month of October, which both hover around the same mark. Over the course of the year, a gradual increase in humidity can be observed, particularly from April to May, where it peaks at 87%. This seasonal trend showcases Greymouth's characteristic wetness, typically intensifying as it transitions into spring. As temperatures rise, the relatively high humidity remains a defining feature, contributing to the lush, vibrant landscapes for which this region is renowned.
In September, Greymouth experiences a UV Index of 6, categorizing the exposure as high with a burn time of approximately 25 minutes. This marks a transition from the low index seen during the winter months of June and July, where the UV levels were at 2, to a stronger intensity that heralds the onset of spring. As daylight increases and temperatures rise, it's important to stay vigilant about sun protection, especially as the UV Index will soon escalate to very high levels in October. For more detailed insights, visit Greymouth UV Index.
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As the seasons transition, September in Greymouth, New Zealand, shines with an invigorating 217 hours of sunshine, marking a gentle revival from the winter months. This increase in daylight is welcomed after a modest 194 hours in August, signaling the approach of warmer days. Interestingly, September’s sunshine hours set the stage for an upward trend heading into spring, with October promising even more radiant skies at 239 hours. This gradual rise underscores Greymouth's transformation as it shakes off the chill of winter and embraces the bright, lively days of spring, inviting both locals and visitors to enjoy the revitalizing energy of the coastal town.
In September, Greymouth experiences a moderate likelihood of sunny weather, with a 37% chance of sunshine gracing the skies. This marks a slight increase compared to the previous months, showcasing a promising transition into spring. Interestingly, September's sun probabilities outshine October's significantly lower 23%, hinting at the fading winter clouds and the burgeoning warmth of the season ahead. Overall, as the days grow longer and warmer, residents and visitors alike can look forward to a refreshing shift in the weather landscape, setting the stage for enjoyable outdoor activities.
As September unfolds in Greymouth, New Zealand, the daylight begins to reclaim its strength, stretching to 11 hours after the winter months. This slight increase marks a transition from the diminished light of the middle of the year, where daylight hovered around 9 hours from June to August. The gradual return of longer days continues into October, where sunlight expands to 13 hours, hinting at the approaching summer. The overall trend showcases a seasonal rhythm, where daylight peaks at 15 hours in December, providing a stark contrast to the shorter, darker days at the beginning of the year. This natural ebb and flow of light not only shapes the landscape but also enriches the experience of living in this picturesque coastal town.
As September arrives in Greymouth, New Zealand, a notable shift in the wind pattern emerges. The average wind speed climbs to 3.1 m/s (7 mph), marking a slight increase from the summer months and setting the stage for the breezier conditions of spring. This uptick is a refreshing change that contrasts with the more gentle winds of the previous months, where speeds hovered between 2.0 m/s and 2.6 m/s. The invigorating presence of the September wind hints at the dynamic weather transitions to come, invigorating the coastal landscape and bringing a renewed energy to the region as it gears up for warmer days ahead.
Weather in Greymouth varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Greymouth, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather in Greymouth is quite cool, with average temperatures ranging from a chilly 0°C (32°F) at night to a mild 18°C (64°F) during the day. The area experiences significant rainfall, accumulating 262 mm (10.3 in) over 17 days, contributing to a high humidity level of 85%.
In contrast, January brings warmer conditions, with nighttime temperatures starting at 7°C (45°F) and peaking at a comfortable 26°C (80°F) in the daytime. Rainfall is lower, totaling 202 mm (7.9 in) over 15 days, and humidity is slightly reduced at 81%. For more details, you can check Greymouth weather in January.
September and February exhibit contrasting weather patterns. In September, temperatures range from a chilly 0°C (32°F) to a mild 18°C (64°F), with an average of 10°C (50°F). The month is notably wet, receiving 262 mm (10.3 in) of precipitation over 17 days, accompanied by high humidity levels at 85%. Conversely, February enjoys a much warmer climate, featuring temperatures that span from 6°C (43°F) to a high of 28°C (83°F), averaging 17°C (62°F). Rainfall is less frequent, with 175 mm (6.9 in) spread across only 13 days and slightly lower humidity at 79%. For more details, you can check Greymouth weather in February.
When comparing the weather in September and March, notable differences emerge. September experiences cooler temperatures, with a minimum of 0°C and an average of 10°C, while March boasts milder conditions, featuring a minimum of 6°C and an average of 16°C. The maximum temperatures also illustrate this change, peaking at 18°C in September compared to 24°C in March. Precipitation levels are significant in both months, with September receiving 262 mm over 17 days and March slightly less at 213 mm across 15 days. Humidity levels are relatively high in both months, with September at 85% and March slightly lower at 81%. For a more detailed look at March weather, check out Greymouth weather in March.
When comparing the weather in September and April, notable differences emerge in both temperature and precipitation. In September, temperatures range from a chilly 0°C (32°F) at night to a maximum of 18°C (64°F) during the day, with an average of 10°C (50°F). This month also experiences higher rainfall, with 262 mm (10.3 in) over 17 days, contributing to a humid atmosphere with 85% humidity.
In contrast, April presents milder temperatures, with nighttime lows of 2°C (36°F) and daytime highs reaching up to 22°C (72°F), resulting in a more comfortable average temperature of 13°C (56°F). April sees slightly less precipitation at 217 mm (8.5 in) over 15 days, and humidity remains comparably high at 84%. For more detailed insights on the weather during this month, you can visit Greymouth weather in April.
September and May in Greymouth exhibit notable differences in weather. In September, temperatures range from a chilly 0°C (32°F) to a maximum of 18°C (64°F), with an average of 10°C (50°F). This month sees considerable precipitation, totaling 262 mm (10.3 in) over 17 days, accompanied by high humidity levels at 85%. In contrast, May offers slightly warmer temperatures with a range of 0°C (33°F) to 19°C (67°F) and an average of 11°C (52°F). Precipitation is also high but slightly less than in September, recording 238 mm (9.4 in) over 16 days, with humidity rising to 87%. For more detailed insights about May weather, you can check Greymouth weather in May.
In comparing the weather of September and June, we see some notable differences. Both months have similar maximum temperatures, peaking at around 18°C (64°F) in September and 18°C (65°F) in June. However, September is cooler on average, with an average temperature of 10°C (50°F) compared to 9°C (48°F) in June. Rainfall is significantly higher in September, with 262 mm (10.3 in) over 17 days, while June experiences only 134 mm (5.3 in) over 12 days. Humidity levels are slightly elevated in June at 87%, compared to 85% in September. For more detailed information, you can check Greymouth weather in June.
The weather in September is generally milder compared to July, with average temperatures rising from 8°C (47°F) in July to 10°C (50°F) in September. While both months experience significant precipitation, September sees slightly more rainfall at 262 mm (10.3 in) over 17 days compared to July's 251 mm (9.9 in) over 16 days. Additionally, the humidity levels are quite similar, with September at 85% and July at 87%. For a more detailed look at July's weather conditions, you can visit Greymouth weather in July.
When comparing the weather in September to August, September experiences slightly warmer temperatures, with an average of 10°C (50°F), as opposed to August's average of 9°C (49°F). The maximum temperatures also show a slight increase, reaching up to 18°C (64°F) in September compared to 17°C (63°F) in August. However, September has more precipitation, totaling 262 mm (10.3 in) over 17 days, while August recorded 237 mm (9.3 in) over 20 days. Despite these differences, both months maintain similar humidity levels at 85%. For more detailed insights into August’s weather, check out Greymouth weather in August.
In September, the weather features cooler temperatures, with a minimum of 0°C (32°F) and an average of 10°C (50°F), peaking at 18°C (64°F). This month experiences higher precipitation, totaling 262 mm (10.3 in) over 17 days, while humidity remains relatively high at 85%. In contrast, October sees a slight uptick in temperatures, with minimums of 2°C (36°F) and an average of 12°C (53°F), maxing out at 20°C (68°F). While precipitation decreases to 231 mm (9.1 in), it occurs over more days, totaling 20, and humidity remains comparable at 84%. For more specific details about the weather in this month, check out Greymouth weather in October.
In comparing the weather between September and November, September typically experiences cooler temperatures, with a minimum of 0°C (32°F) and an average of 10°C (50°F), while November sees milder conditions, with minimum temperatures starting at 4°C (40°F) and an average of 14°C (57°F). Both months have significant rainfall, but September is slightly wetter, receiving 262 mm (10.3 in) over 17 days, compared to November's 257 mm (10.1 in) over 16 days. Humidity levels remain fairly consistent, with September at 85% and November slightly lower at 82%. For more detailed information about November weather, you can visit Greymouth weather in November.
In comparison to December, September experiences cooler temperatures, with a minimum of 0°C (32°F) and an average of 10°C (50°F), while December sees milder temperatures ranging from a minimum of 6°C (43°F) to a maximum of 24°C (75°F). Both months have similar precipitation levels, with September receiving 262 mm (10.3 in) and December slightly less at 256 mm (10.1 in), but the days of rain remain consistent at 17 days each. Interestingly, humidity levels are fairly comparable, with September at 85% and December just a touch lower at 84%. For more details about the weather conditions during December, check out Greymouth weather in December.
As September rolls around in Greymouth, the weather begins to transition, marking the end of the winter chill. While maximum temperatures can reach a pleasant 18°C, the average dips to a refreshing 10°C, with nighttime temperatures occasionally touching the freezing mark. This month is notably damp, with precipitation occurring on 17 days, contributing to a humidity level around 85%. Compared to the warmer, drier summer months, September presents a cooler and more humid experience, making it a time when the landscape flourishes in lush greenery. For a deeper look into the annual weather patterns, take a look at Greymouth Climate.