Last updated: August 31, 2025
In Rotorua, New Zealand, September ushers in the gently warming embrace of spring, where average temperatures hover around a comfortable 10°C (50°F). Daily highs can reach a pleasant 18°C (64°F), while nights dip to a brisk 0°C (32°F). However, visitors should prepare for variable weather, as the region experiences 14 days of rain, totaling about 115 mm (4.5 in) of precipitation, contributing to a humidity level of 78%. This combination of warmth and moisture brings life to Rotorua’s stunning landscapes, making it a captivating destination during this transitional month.
As September arrives in Rotorua, temperatures begin to gradually rise, signaling the transition from the chill of winter to the beginnings of spring. With a minimum of 0°C (32°F) and an average temperature of 10°C (50°F), the cooler mornings invite a cozy start to the day. By midday, the mercury climbs to a pleasant maximum of 18°C (64°F), allowing for brighter afternoons perfect for outdoor adventures. This marked increase from the preceding winter months reflects the city's dynamic climate, where the vibrant geothermal landscape comes to life against a backdrop of warming temperatures, setting the stage for the beautiful blooms that characterize early spring in New Zealand.
In September, Rotorua experiences a significant amount of rainfall, with 115 mm (4.5 inches) of precipitation spread across 14 days. This marks a slight decrease from the wetter months of August and July, which both recorded 125 mm (4.9 inches) but were accompanied by more rainy days. As we transition from winter to spring, September not only retains a substantial level of moisture but also sets the stage for the incoming warmer months. The consistent rainfall during this time contributes to the lush landscapes that Rotorua is famous for, making it an ideal backdrop for outdoor activities. Overall, while September's precipitation is robust, it hints at the gradual shift toward a drier season ahead.
In September, Rotorua experiences a notable dip in humidity, with levels averaging 78%. This marks a slight decrease from the preceding month, August, which recorded a humid 83%. As winter recedes, the transition to spring is palpable, signaling a shift towards milder conditions. Overall, the humidity in Rotorua tends to rise through the colder months, reaching a peak in July at 86%, before gradually declining as warmer months approach. The humidity trend showcases a beautiful ebb and flow throughout the year, encapsulating Rotorua's unique climate nuances.
As September unfolds in Rotorua, New Zealand, residents can expect a UV Index of 7, placing it in the high exposure category with a burn time of approximately 25 minutes. This slight uptick from the previous months reflects a transition into spring, following a pattern of gradually increasing UV levels that began in the winter. While still moderate compared to the summer peak, caution is advised as the intensity begins to rise, reminiscent of the very high levels noted in March and October. Staying informed about UV exposure is essential, especially as the days grow longer and sunnier. For more information on the UV index in Rotorua, visit Rotorua UV Index.
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As September rolls in, Rotorua begins to bask in a welcome resurgence of sunshine, accumulating 236 hours of glorious daylight—an increase from August's 214 hours. This upward trend continues, paving the way for October, which not only maintains momentum with a promising 260 hours but also hints at the approaching summer months. The gradual rise in sunshine hours, especially following the chill of winter with June often hovering around 170 hours, paints a picture of rejuvenation and vibrant energy. Visitors and locals alike can revel in the warm glow of early spring, where each sunlit hour invites adventure and exploration in this stunning geothermal paradise.
In Rotorua, New Zealand, the likelihood of enjoying sunny weather in September hovers around 36%, placing it among the cooler months when sunshine is less abundant. This percentage aligns closely with the preceding months of August and July, both also exhibiting similar chances for sun. As the seasons transition, September's sun probability reflects a gradual recovery from the colder winter months of June and July, which see significantly lower sunshine rates of 26% and 37% respectively. However, compared to the vibrant summer months like January and February, where the chance of sun peaks at 47% and 37%, September offers only a glimpse of the more cheerful weather that lies ahead in spring. Overall, while September may not boast the sunniest conditions, it marks the turning point towards brighter days.
As September unfolds in Rotorua, New Zealand, the arrival of spring is marked by an increase in daylight, with the sun gracing the skies for approximately 11 hours a day. This heralds a departure from the shorter days of winter, where sunlight lingered for just 9 hours in July and June. Following the gradual descent into autumn seen in earlier months, the daylight duration begins to rise again, setting a precedent for the longer days of summer ahead. In October, the daylight stretches to 13 hours, paving the way for November and December, where daylight peaks at a generous 14 hours. This trend not only paints a picture of seasonal change but also invites residents and visitors to enjoy more outdoor activities as the days become longer and warmer.
As September approaches in Rotorua, New Zealand, a noticeable shift in the wind begins to emerge. With an average wind speed of 3.5 m/s (8 mph), September marks a distinct increase from the more gentle breezes of winter, signaling the arrival of spring. This uptick in wind speed, compared to previous months, hints at the invigorating changes that accompany the seasonal transition. Following a steady pattern through the colder months, where wind speeds hovered around 2.9 to 3.2 m/s (6 to 7 mph), this month brings a refreshing breath of air, suggesting a lively spring ahead. As the winds pick up, they carry with them the promise of new beginnings, inviting both residents and visitors to embrace the vibrant atmosphere that Rotorua has to offer.
Weather in Rotorua varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Rotorua, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present contrasting weather patterns. In September, temperatures range from a chilly 0°C (32°F) at night to a mild 18°C (64°F) during the day, with an average of 10°C (50°F). This month sees considerable rainfall of 115 mm (4.5 in) over 14 days, coupled with a high humidity level of 78%. In stark contrast, January offers much warmer conditions, with nighttime lows of 6°C (44°F) and daytime highs reaching up to 29°C (84°F), averaging 18°C (65°F). Additionally, January experiences significantly less rainfall, amounting to 65 mm (2.6 in) over only 8 days, and lower humidity at 69%. For a more detailed look at January weather, you can visit Rotorua weather in January.
September weather in Rotorua is characterized by 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 typically experiences higher precipitation, with 115 mm (4.5 in) falling over 14 days, contributing to an average humidity of 78%. In contrast, February presents much warmer conditions, boasting a minimum of 7°C (45°F), an average of 18°C (65°F), and a maximum of 30°C (87°F). Additionally, February sees less rainfall, totaling 96 mm (3.8 in) over just 7 days, and a lower humidity level of 69%. For more detailed information, you can check Rotorua weather in February.
In comparing the weather between September and March, we see a notable shift in temperatures and overall conditions. September tends to be cooler, with average temperatures hovering around 10°C (50°F) and maximums reaching only 18°C (64°F), while March experiences milder weather, averaging 16°C (61°F) and peaking at 26°C (79°F). Precipitation levels are similar, with September receiving 115 mm (4.5 in) over 14 days, compared to March's 120 mm (4.7 in) over 11 days. Additionally, March exhibits slightly lower humidity at 71%, compared to September's 78%. For more details on March's weather, you can check Rotorua weather in March.
Comparing the weather in September and April reveals notable differences. September typically experiences cooler temperatures with a minimum of 0°C (32°F) and an average of 10°C (50°F), while April enjoys milder conditions with minimum temperatures around 4°C (39°F) and an average of 13°C (56°F). In terms of maximum temperatures, September peaks at 18°C (64°F), whereas April can reach up to 23°C (74°F). Precipitation levels are relatively similar, with September receiving 115 mm (4.5 in) over 14 days and April slightly wetter at 128 mm (5.1 in) over just 10 days. The humidity is also slightly lower in April at 74% compared to 78% in September. For more detailed information about the weather specifics in April, visit Rotorua weather in April.
In comparing the weather of September and May, we observe a slight difference in temperatures and precipitation patterns. September experiences a minimum temperature of 0°C (32°F) and an average of 10°C (50°F), while May has a slightly cooler minimum of -1°C (31°F) but a comparable average of 11°C (52°F). The maximum temperatures are similar, with September reaching up to 18°C (64°F) and May peaking at 19°C (67°F). Precipitation is more frequent in September, with 115 mm (4.5 in) over 14 days, compared to May's 95 mm (3.8 in) across 9 days. Humidity levels are also high in both months, with September at 78% and May at 83%. For more details on May's weather conditions, you can visit Rotorua weather in May.
September and June present relatively similar climates, yet they have distinct characteristics. In September, temperatures range from a chilly 0°C (32°F) to a comfortable 18°C (64°F), with an average of 10°C (50°F). The month sees a total precipitation of 115 mm (4.5 in) across 14 days, accompanied by a humidity level of 78%. Conversely, June has slightly lower temperature fluctuations, with minimums dipping to -2°C (29°F) and a maximum reaching 17°C (63°F), averaging 9°C (48°F). The precipitation is comparable at 110 mm (4.3 in), spread over 10 days, but humidity is slightly higher at 85%. For more details on June weather, check out Rotorua weather in June.
In comparing the weather between September and July, we see a noticeable shift in temperature and humidity levels. In September, the temperatures range from a minimum of 0°C (32°F) to a maximum of 18°C (64°F), with an average of 10°C (50°F), reflecting a generally milder climate. The precipitation in September totals 115 mm (4.5 in) over 14 days, while July experiences slightly higher precipitation at 125 mm (4.9 in) over 12 days, although with a lower temperature range from -2°C (28°F) to 15°C (59°F) and an average of 8°C (46°F). Furthermore, humidity is relatively high in both months, with September at 78% and July slightly higher at 86%. For a more detailed look at July weather, you can refer to Rotorua weather in July.
In comparing the weather between September and August, September tends to be slightly warmer, with a minimum temperature of 0°C (32°F) and an average of 10°C (50°F), compared to August's minimum of -2°C (29°F) and average of 8°C (47°F). However, September also experiences higher humidity levels at 78%, while August sits at 83%. Precipitation levels are comparable, with September receiving 115 mm (4.5 in) over 14 days, while August recorded 125 mm (4.9 in) across 15 days. For more detailed insights into August's weather, you can refer to Rotorua weather in August.
In September, temperatures range from a chilly minimum of 0°C (32°F) to a pleasant maximum of 18°C (64°F), with an average temperature of 10°C (50°F). The month sees considerable rainfall, with 115 mm (4.5 in) of precipitation spread over 14 days, contributing to a humidity level of 78%. As we transition into October, the weather warms slightly, featuring a minimum temperature of 1°C (33°F) and a maximum of 22°C (73°F), with an average of 12°C (53°F). While the precipitation decreases slightly to 106 mm (4.2 in), it still occurs over 14 days, and humidity remains comparable at 77%. For more details on October weather, you can visit Rotorua weather in October.
In comparing September and November weather, September typically experiences cooler temperatures with a minimum of 0°C (32°F) and an average of 10°C (50°F), whereas November sees a milder minimum of 4°C (39°F) and an average of 15°C (58°F). Additionally, September is marked by more precipitation, totaling 115 mm (4.5 in) over 14 days, compared to November's 100 mm (3.9 in) across 13 days. Humidity levels are slightly higher in September at 78%, while November maintains a lower humidity of 74%. For a closer look at November weather specifics, you can refer to Rotorua weather in November.
In September, the weather tends to be cooler with temperatures ranging from a minimum of 0°C (32°F) to a maximum of 18°C (64°F), an average of 10°C (50°F). The month is characterized by higher humidity at 78% and experiences significant rainfall of 115 mm (4.5 in) over about 14 days. In contrast, December offers much warmer conditions, with temperatures fluctuating between a minimum of 5°C (41°F) and a maximum of 28°C (83°F), averaging 17°C (62°F). The precipitation level is slightly higher at 116 mm (4.6 in), but occurs over just 13 days, making it a relatively drier month with lower humidity at 66%. For more detailed information on December’s weather patterns, you can check Rotorua weather in December.
As September unfolds in Rotorua, the weather shifts distinctly from the colder months, bringing a refreshing transition into spring. While temperatures begin to rise, showcasing a pleasant average that encourages outdoor exploration, the increased humidity and precipitation remind us that this season can still be quite unpredictable. With about half the month seeing rain, it's essential to prepare for both sunny and wet days alike. This blend of dynamic weather allows visitors to experience Rotorua's lush landscapes in their vibrant form, making it a unique time to appreciate the area's natural beauty. For more comprehensive insights on weather patterns, check out Rotorua Climate.