Last updated: August 31, 2025
September in Whanganui, New Zealand, ushers in the early signs of spring with average temperatures fluctuating around 11°C (53°F). During this month, residents can expect maximum highs reaching 17°C (62°F) and minimum lows dipping to 6°C (42°F). The region sees significant rainfall, totaling 114 mm (4.5 in) across 14 days, creating a lush backdrop perfect for nature enthusiasts. With a humidity level hovering around 83%, the air feels fresh yet damp, adding to the invigorating atmosphere of this vibrant coastal town.
In September, Whanganui begins to shake off the remnants of winter, as temperatures gradually rise, signaling the arrival of spring. The minimum temperature hovers around a brisk 6°C (42°F), while the average settles at a cool but refreshing 11°C (53°F). The maximum tends to reach a pleasant 17°C (62°F), providing a comfortable backdrop for outdoor activities. Compared to the chillier winter months of July and August, this transition is marked by a noticeable increase in warmth, fostering a sense of renewal and inviting locals and visitors alike to enjoy the blossoming landscape. With these moderate temperatures, September in Whanganui promises a delightful experience as nature begins to bloom once more.
September in Whanganui, New Zealand, brings average precipitation of 114 mm (4.5 in), slightly lower than the preceding months of August and April, which are particularly wet. Occurring over approximately 14 days, September's rainfall continues the trend of consistent precipitation seen throughout the winter months, with June and July being the wettest. Notably, the transition from winter to spring shows a gradual tapering from the heavier downpours of the colder months while still contributing to the lush, green landscapes for which the region is known. As the month unfolds, the weather becomes more temperate, encouraging outdoor activities even amidst this moderate rainfall.
In September, Whanganui experiences a slight dip in humidity, averaging around 83%—a continuation of the trend witnessed during the cooler months. The humidity remains relatively stable, having shown an upward trajectory from 79% in the earlier months of the year, with May and June peaking at 84% and 86%, respectively. This gradual increase reflects the region's shift from winter into spring, where the air begins to feel a bit more comfortable with the impending warmth. As October approaches, the humidity levels are set to slightly decrease again to 82%, suggesting a transition into more balanced conditions that characterize the upcoming months. Overall, Whanganui's humidity showcases a rhythmic pattern, punctuated by seasonal changes that residents and visitors alike may find refreshing.
As the seasons begin to transition in Whanganui, September marks a notable shift in the UV Index, which rises to 6—a high exposure category with a burn time of about 25 minutes. This increase follows the relatively mild winter months, where UV levels were lower, ranging from minimal to moderate exposure. As spring approaches, residents and visitors should be mindful of the sun’s strength, particularly as October looms with an even higher index of 9, indicating very high sun exposure. It's a reminder to enjoy the vibrant outdoors while taking necessary precautions. To learn more about the UV Index in this beautiful region, visit Whanganui UV Index.
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September in Whanganui, New Zealand, ushers in a gentle warmth, with 248 hours of sunny brilliance that hints at the approaching spring. As the days grow longer, this month stands out as a transitional period, wedged between the crispness of winter and the vibrant energy of summer. Following a more temperate August with 232 hours of sunshine, September showcases a significant increase, indicating the gradual return of sun-drenched skies. This uptick in sunlight not only brightens the landscapes but also rejuvenates the spirit, making it a perfect time for locals and visitors alike to explore the natural beauty of Whanganui. Looking ahead, October promises a further ascent with 275 hours, setting the stage for a gorgeous lead into the bustling summer months.
In Whanganui, New Zealand, September offers a moderate 46% chance of sunny weather, positioning it favorably within the month-to-month trends of the year. This slight uptick in sunshine compared to the cooler winter months hints at the arrival of spring, where residents and visitors alike can expect gradually improving conditions. While the sun shines less frequently than earlier months like January, this transitional period marks a shift from the gloomy winter, preparing the landscape for the sunnier days of spring and summer ahead. With each passing week, the likelihood of sunshine in Whanganui tends to reflect the burgeoning vibrancy of the season, inviting outdoor activities and a renewed appreciation for the beauty of the region.
As September rolls into Whanganui, New Zealand, daylight begins to stretch its arms after the winter months, offering approximately 11 hours of sunshine each day. This gradual increase in daylight is a precursor to the vibrant spring ahead, contrasting sharply with the shorter days of winter when sunlight dwindled to just 9 hours in June, July, and August. Following September, October brings an exciting leap to 13 hours, ushering in longer and brighter days that continue to climb towards the 14-hour mark of the summer months. This rhythm of changing daylight not only enhances the natural beauty of the region but also invigorates the local community, encouraging outdoor activities as nature awakens from its winter slumber.
As September arrives in Whanganui, New Zealand, it ushers in a noticeable shift in the wind patterns, with average wind speeds peaking at 7.1 m/s (16 mph). This marks a clear increase from the preceding months, showcasing a trend that ascends as winter wanes. The springtime breeze provides a refreshing change, hinting at warmer days ahead. Interestingly, September's winds are not just a seasonal transition; they surpass the calmer winds of late summer, reminding residents that nature is ever-changing. With the promise of more dynamic weather, Whanganui in September embraces the lively spirit of early spring, setting the stage for the vibrant months to come.
Weather in Whanganui varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Whanganui, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present quite different weather patterns. In September, temperatures range from a minimum of 6°C (42°F) to a maximum of 17°C (62°F), with an average of 11°C (53°F). This month is characterized by a higher level of precipitation, totaling 114 mm (4.5 in) over about 14 days, and a humidity level of 83%. In contrast, January experiences milder temperatures, with temperatures ranging from a minimum of 11°C (52°F) to a maximum of 24°C (75°F), and an average of 18°C (64°F). Precipitation drops significantly to 61 mm (2.4 in) over 10 days, alongside a slightly lower humidity level of 79%. For more detailed information, check out Whanganui weather in January.
September and February present contrasting weather patterns. In September, temperatures range from a cool 6°C (42°F) at night to a mild 17°C (62°F) during the day, with an average of 11°C (53°F). The month experiences significant precipitation, totaling 114 mm (4.5 in) over 14 days, combined with a high humidity level of 83%. In contrast, February offers warmer conditions, with temperatures ranging from a minimum of 11°C (53°F) to a maximum of 26°C (79°F), averaging 18°C (65°F). Rainfall is less frequent, accumulating to 79 mm (3.1 in) over just 8 days, and humidity drops slightly to 79%. For further details about February weather, check out Whanganui weather in February.
The weather in September is generally cooler and wetter compared to March. In September, temperatures range from a minimum of 6°C (42°F) to a maximum of 17°C (62°F), with an average of 11°C (53°F). The month sees significant precipitation, totaling 114 mm (4.5 in) over about 14 days, while humidity remains relatively high at 83%. In contrast, March experiences warmer temperatures, with a minimum of 11°C (52°F) and a maximum of 23°C (74°F), averaging around 17°C (63°F). Precipitation is also lighter in March, totaling 96 mm (3.8 in) over approximately 10 days, coupled with slightly lower humidity at 79%. You can find more detailed information on the weather patterns in this region during March at Whanganui weather in March.
When comparing the weather in September and April, a notable difference in temperatures is evident. September sees cooler conditions with an average temperature of 11°C (53°F) and maximums reaching 17°C (62°F), while April enjoys milder weather with an average of 15°C (60°F) and highs of 22°C (71°F). Both months experience significant rainfall, but April tends to be wetter, receiving 143 mm (5.6 in) over 13 days compared to September's 114 mm (4.5 in) over 14 days. Humidity levels are slightly higher in September at 83%, compared to April's 80%. For more details, check out Whanganui weather in April.
When comparing the weather in September and May, we see some notable differences. September features cooler temperatures, with a minimum of 6°C (42°F) and an average of 11°C (53°F), while May has slightly warmer conditions, with temperatures ranging from a minimum of 7°C (45°F) and an average of 14°C (57°F). Additionally, September records more precipitation, totaling 114 mm (4.5 in) across 14 days, compared to May's 88 mm (3.5 in) over 11 days. Humidity levels are quite similar, with September at 83% and May at 84%. For a closer look at May weather specifics, you can visit Whanganui weather in May.
When comparing the weather in September and June, we see some interesting similarities and differences. Both months have similar maximum temperatures, with September reaching up to 17°C (62°F) and June also peaking at 17°C (63°F). However, September tends to have slightly milder average temperatures, ranging from a minimum of 6°C (42°F) and an average of 11°C (53°F), compared to June's minimum of 5°C (41°F) and average of 12°C (53°F). In terms of precipitation, September records about 114 mm (4.5 in) over 14 days, while June has slightly less, at 111 mm (4.4 in) over 15 days. Humidity levels are comparable as well, with September at 83% and June slightly higher at 86%. Overall, both months are relatively cool and wet, making them similar in climate characteristics. For more detailed information, check out Whanganui weather in June.
In comparing the weather of September and July, we can observe some notable similarities and differences. Both months exhibit similar average temperatures, with September having a slightly higher maximum of 17°C (62°F) compared to July's 16°C (61°F). However, July features a slightly lower minimum temperature of 5°C (41°F) versus September's 6°C (42°F). Precipitation levels are also comparable, with July receiving 118 mm (4.6 in) over 16 days and September seeing 114 mm (4.5 in) over 14 days. Humidity levels remain high in both months, with September at 83% and July marginally higher at 86%. For more detailed insights, you can check out the Whanganui weather in July.
In comparing the weather of September and August, we see similar temperature patterns, with September recording a slightly higher maximum temperature of 17°C (62°F) compared to August's 16°C (61°F). Both months share an average temperature of around 11°C (53°F), but September features a minimal increase in the minimum temperature, resting at 6°C (42°F) versus August's 5°C (40°F). Precipitation levels show a decrease in September, with 114 mm (4.5 in) over 14 days, compared to 120 mm (4.7 in) over 16 days in August. Humidity remains constant at 83% for both months, leading to a similar level of moisture in the air. For more detailed information regarding August's weather, you can refer to Whanganui weather in August.
In September, the weather tends to be a bit cooler with minimum temperatures around 6°C (42°F) and an average of 11°C (53°F). The maximum temperature reaches 17°C (62°F), accompanied by significant precipitation of 114 mm (4.5 in) over 14 days and high humidity at 83%. In contrast, October brings a slight warming trend, with minimum temperatures rising to 7°C (44°F) and an average of 13°C (56°F). The maximum temperature increases to 19°C (66°F), and while precipitation decreases to 99 mm (3.9 in), it still occurs over the same number of days, maintaining a similar humidity level of 82%. For more detailed information, check out Whanganui weather in October.
September tends to be cooler than November, with average temperatures ranging from a minimum of 6°C (42°F) to a maximum of 17°C (62°F). In contrast, November enjoys slightly milder conditions, with temperatures ranging from a minimum of 9°C (49°F) to a maximum of 20°C (69°F). Additionally, September sees more precipitation, totaling 114 mm (4.5 in) over 14 days, while November has a lower total of 85 mm (3.4 in) across 13 days. Humidity levels are relatively similar, with September at 83% and November at 82%. For more details, you can check Whanganui weather in November.
In comparing the weather between September and December, September presents a cooler picture with temperatures ranging from a minimum of 6°C (42°F) to a maximum of 17°C (62°F) and an average of 11°C (53°F). The month also experiences significant rainfall, with 114 mm (4.5 in) spread over 14 days and a humidity level of 83%. In contrast, December showcases a milder climate, featuring a minimum temperature of 9°C (49°F) and a maximum of 23°C (74°F), with an average temperature of 17°C (63°F). Although December sees a slight increase in precipitation to 133 mm (5.2 in) over the same number of days, the humidity is marginally lower at 81%. For more detailed information on December weather, you can check Whanganui weather in December.
As September arrives in Whanganui, the weather begins to transition from the chill of winter to the embrace of spring. With temperatures averaging around 11°C and often peaking at a comfortable 17°C, this month offers a pleasant respite from the colder months. However, the sky can be quite moody, as September sees an average of 14 days of rain, contributing to a relatively high humidity of 83%. This combination of warmth with frequent rainfall sets September apart from the drier summer months ahead, making it a time of refreshing change and vibrant growth. For a deeper understanding of what to expect throughout the year, explore the details at Whanganui Climate.