Last updated: August 31, 2025
September in Nelson, New Zealand marks a transitional period, characterized by mild temperatures and frequent rainfall. With daytime highs reaching a pleasant 16°C (62°F) and an average of 10°C (50°F), the air remains crisp, especially in the early mornings, where temperatures can dip as low as 3°C (37°F). Residents and visitors can expect 116 mm (4.6 in) of precipitation over 11 days this month, contributing to a relatively high humidity level of 83%. This weather pattern fosters a vibrant spring atmosphere, perfect for exploring the region's stunning landscapes and blooming flora.
As September unfolds in Nelson, New Zealand, the temperatures begin to herald the arrival of spring, marking a transition from the cooler winter months. The month starts with a minimum of 3°C (37°F) and rises to a pleasant maximum of 16°C (62°F), reflecting a gradual warming that averages 10°C (50°F) throughout the month. Compared to the chilly depths of winter, where temperatures dipped below 2°C (36°F), September offers a refreshing change, inviting residents and visitors alike to embrace the blooming landscapes. This gradual rise paves the way for October's further warmth, setting the stage for the vibrant spring season ahead, with all the promise of blossoming flora and sunny days.
September in Nelson, New Zealand, sees a moderate precipitation amount of 116 mm (4.6 in), falling in line with the early spring transition where increased moisture prepares the region for the warmer months ahead. With rain spread over approximately 11 days, this month tends to be slightly less soggy than its predecessors, hinting at a shift in the weather pattern after the heavier rains of July and August, which both recorded over 130 mm. Interestingly, while precipitation decreases, the frequency of rainy days remains consistent, reflecting the gradual change in climate as the seasons shift. This blend of conditions contributes to lush landscapes bursting back to life, showcasing spring's arrival in all its vibrant glory.
September in Nelson, New Zealand, sees a humidity level of 83%, which is consistent with the moderately humid conditions experienced in the preceding months. Following the peak of 86% in both June and July, humidity begins to gently taper off as spring approaches. This gradual decline from the winter highs aligns with the transition to warmer weather, making September feel refreshing yet still slightly humid. As the month progresses toward October, we can expect a continued drop, settling to 82%, indicating the onset of drier conditions typical for the spring season. This trend reflects Nelson's characteristic climate rhythm, where the summer months often bring lower humidity levels after the winter's moisture-laden air.
In September, Nelson, New Zealand experiences a UV Index of 6, categorizing it as high and resulting in a burn time of 25 minutes for unprotected skin. This marks a gradual transition from the winter months, where the UV Index dipped to low levels in June and July, to a more intense sun exposure as spring approaches. The UV Index is poised to increase further in the coming months, with October showcasing a rise back to 9, classed as very high. This trend highlights the importance of sun safety as the warmer days of spring set in. For more information on sun protection, check out Nelson UV Index.
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September in Nelson, New Zealand, is a vibrant month that marks a transition from winter's retreat to the warmth of spring. With 255 hours of sunshine, it sets the stage for longer, brighter days ahead. This is a noticeable rise from the chillier months of June and July, which enjoyed just 178 and 187 hours, respectively. As September approaches, the area witnesses a refreshing increase in daylight, just shy of the peak summer months. Following this trend, October further elevates the sunshine count to 281 hours, hinting at the abundant warmth that summer will soon bring. This wonderful surge not only brightens the landscape but also rejuvenates the local community, inviting everyone to embrace the outdoors and celebrate the impending beauty of spring.
In Nelson, New Zealand, September brings a relatively promising 48% chance of sunny weather, marking a slight uptick compared to the preceding winter months. Following the cooler, cloudier days of June and July, where sunny weather probabilities dipped to 36% and 39%, September starts to show encouraging signs of spring. This increase aligns closely with the overall trend of seasonal transition, as the likelihood of sunny days generally improves from the autumn chill of April's 50% down to the less favorable conditions seen in October and November. As the region shakes off winter's grasp, residents and visitors can look forward to more sunshine, inviting outdoor activities and blossoming landscapes.
As September unfolds in Nelson, New Zealand, daylight begins its gradual ascent following the winter months. With 11 hours of daylight, this month marks a noticeable increase from the persistent 9 hours experienced during the depths of winter. As the region prepares to embrace the blossoming spring, the trend of lengthening days continues, hinting at the 13 hours that October promises. This transition not only brightens the landscape but also invites a sense of rejuvenation, as locals and visitors alike look forward to the vibrant outdoor activities that longer days will soon bring.
As September rolls into Nelson, New Zealand, the average wind speed picks up slightly to 3.3 m/s (7 mph), mirroring January's brisk breezes. This delicate increase signals the transition from the quieter, calmer months of winter, where wind speeds lingered at around 2.7 m/s from April through June. Interestingly, the gusts begin to strengthen again as spring approaches, bringing a refreshing vitality to the region after the more subdued summer previous months. From August's gentle 3.1 m/s to this month's breezy heights, the wind seems to usher in the vibrant energy of the season, setting the stage for pleasant outdoor adventures in the months ahead. With the promise of October still maintaining a lively pace at 3.0 m/s, it’s clear that propitious winds are set to linger, making Nelson an inviting destination for enjoying the great outdoors.
Weather in Nelson varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Nelson, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January exhibit notable differences in weather patterns. September sees cooler temperatures with a minimum of 3°C (37°F) and an average of 10°C (50°F), peaking at 16°C (62°F). This month is also characterized by higher precipitation, totaling 116 mm (4.6 in) over about 11 days, coupled with 83% humidity. In contrast, January offers a much warmer climate, with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 27°C (80°F), and an average of 18°C (64°F). Rainfall is lower in January, averaging 72 mm (2.8 in) across 8 days, and humidity drops slightly to 79%. For more details on January weather, visit Nelson weather in January.
September and February exhibit contrasting weather patterns, reflecting the transition from late winter to late summer. In September, temperatures range from a chilly minimum of 3°C (37°F) to a mild maximum of 16°C (62°F), with an average of 10°C (50°F). Precipitation is relatively high at 116 mm (4.6 in), occurring over 11 days, along with high humidity levels averaging 83%. In stark contrast, February features warmer temperatures, with lows of 9°C (49°F), an average of 17°C (63°F), and highs reaching 25°C (77°F). Precipitation decreases to 86 mm (3.4 in) spread over just 8 days, accompanied by a slight drop in humidity to 79%. For more specific information, you can explore Nelson weather in February.
September and March present noticeably different weather patterns. In September, temperatures range from a chilly minimum of 3°C (37°F) to a mild maximum of 16°C (62°F), with an average of 10°C (50°F). This month also experiences significant precipitation, with 116 mm (4.6 in) falling over 11 days, and a humidity level of 83%. In contrast, March sees warmer weather, with temperatures starting at a minimum of 9°C (48°F) and peaking at a comfortable 23°C (73°F), averaging 16°C (61°F). While March has slightly higher precipitation at 124 mm (4.9 in) over the same number of days, the humidity remains lower at 79%. For more detailed insights, check out Nelson weather in March.
September and April present distinct shifts in weather patterns. In September, temperatures range from a chilly minimum of 3°C (37°F) to a comfortable maximum of 16°C (62°F), with an average of 10°C (50°F). The month is relatively damp, receiving about 116 mm (4.6 in) of precipitation over 11 days and maintaining high humidity at 83%. Conversely, April enjoys warmer temperatures, with a minimum of 5°C (41°F), an average of 14°C (57°F), and a maximum of 20°C (69°F). While it receives slightly more rainfall at 143 mm (5.6 in) over 13 days, humidity remains lower at 80%. This comparison highlights the transition from the cooler, wetter September to the milder, albeit rainier, April. For more specific details, you can refer to Nelson weather in April.
September and May exhibit similar temperature ranges, though September tends to be slightly cooler, with average temperatures around 10°C (50°F) compared to May's average of 11°C (53°F). Both months experience considerable rainfall, with May being the wetter of the two, receiving 148 mm (5.8 in) over 12 days, while September sees 116 mm (4.6 in) across 11 days. Humidity levels remain high in both months, hovering around 83% in September and slightly higher at 84% in May. For more details, check out Nelson weather in May.
In comparing September and June weather, both months exhibit similar maximum temperatures, reaching up to 16°C (62°F). However, September tends to be slightly warmer on average with a minimum of 3°C (37°F), whereas June has a lower minimum of 2°C (36°F). Precipitation levels are higher in September, totaling 116 mm (4.6 in) over 11 days, compared to June's 76 mm (3.0 in) across 10 days. Humidity is marginally higher in June at 86%, compared to 83% in September. For a detailed look at June weather specifics, you can visit Nelson weather in June.
When comparing the weather in September to July, September generally experiences slightly warmer temperatures, with an average of 10°C (50°F) compared to July's average of 8°C (47°F). The maximum temperature in September can reach up to 16°C (62°F), whereas July's maximum is 14°C (57°F). However, September also sees a higher amount of precipitation, totaling 116 mm (4.6 in) over 11 days, compared to July's 165 mm (6.5 in) over 12 days. Humidity levels are slightly lower in September at 83% compared to July's 86%. For a more detailed look at July's weather, you can visit Nelson weather in July.
In comparing the weather of September and August, September experiences slightly warmer temperatures, with a minimum of 3°C (37°F) and a maximum of 16°C (62°F), compared to August's minimum of 2°C (36°F) and maximum of 15°C (59°F). The average temperature also rises from 9°C (48°F) in August to 10°C (50°F) in September. However, September sees a decrease in total precipitation, with 116 mm (4.6 in) over 11 days, compared to August's 130 mm (5.1 in) spread over 14 days. Both months maintain a high humidity level of 83%. For more details, check out Nelson weather in August.
In September, the weather is characterized by cooler temperatures, with a minimum of 3°C (37°F) and an average of 10°C (50°F), peaking at 16°C (62°F). The month is also marked by relatively high humidity at 83% and notable precipitation, totaling 116 mm (4.6 in) over 11 days. In contrast, October brings slightly warmer conditions, with temperatures ranging from a minimum of 4°C (39°F) to an average of 12°C (54°F) and a maximum of 19°C (66°F). The amount of rainfall increases marginally to 120 mm (4.7 in) across 12 days, while humidity remains comparable at 82%. For more detailed insights into the October weather, you can check Nelson weather in October.
September and November exhibit distinct differences in weather patterns. In September, temperatures range from a cool minimum of 3°C (37°F) to a mild maximum of 16°C (62°F), with an average of 10°C (50°F). The month experiences 116 mm (4.6 in) of precipitation over 11 days, and humidity levels are relatively high at 83%. In contrast, November sees a warmer climate with temperatures ranging from a minimum of 6°C (43°F) to a maximum of 23°C (74°F) and an average of 14°C (57°F). The precipitation slightly increases to 118 mm (4.7 in) over 13 days, while humidity remains fairly consistent at 82%. For a closer look at the weather specifics during this month, check out Nelson weather in November.
September and December showcase notable differences in weather patterns. In September, temperatures range from a minimum of 3°C (37°F) to a maximum of 16°C (62°F), with an average temperature of 10°C (50°F). The month experiences approximately 116 mm (4.6 in) of precipitation over 11 days, coupled with a high humidity level of 83%.
In contrast, December offers warmer temperatures, with a minimum of 8°C (47°F), an average of 16°C (61°F), and a maximum reaching 24°C (76°F). Precipitation increases slightly to 145 mm (5.7 in) over 13 days, and humidity remains relatively stable at 81%. For more detailed insights about the weather during this month, visit Nelson weather in December.
As September rolls in, Nelson's weather begins to shift, marking a transition from the winter chill to the pleasant embrace of spring. While temperatures start to rise, averaging around a cool 10°C (50°F), it’s not uncommon for early morning frosts to remind us that winter is still lingering. With 116 mm of precipitation over 11 days, the increased humidity of 83% adds a freshness to the air, nurturing the region's beautiful blooms as they awaken anew. This blend of mild temperatures and moisture creates a unique charm, distinguishing September from the warmer and often drier months ahead. For those curious about what else to expect throughout the year, explore more at Nelson Climate.