Last updated: August 31, 2025
September in Oamaru, New Zealand welcomes the arrival of spring with a maximum temperature peaking at 18°C (65°F), while the average temperature lingers around a cool 9°C (49°F). The chill of the minimum temperature can dip down to 2°C (35°F), reminding residents of the season's transition. With 46 mm (1.8 in) of precipitation spread over 9 days, the month presents a mix of sunny and rainy spells, contributing to the lush landscape. Coupled with a humidity level of 83%, September is marked by a refreshing yet damp atmosphere, making it an intriguing time for both locals and visitors to experience Oamaru's seasonal charm.
In September, Oamaru begins to shake off the winter chill, revealing a pleasant transition toward spring. With temperatures ranging from a minimum of 2°C (35°F) to a maximum of 18°C (65°F), the average settles at a comfortable 9°C (49°F). This month marks a gradual warming trend, as days become noticeably longer and milder compared to the preceding winter months. The increase in temperatures not only brightens up the landscape but also invites locals and visitors alike to enjoy the burgeoning outdoor activities, setting the stage for the warmth of summer just around the corner.
In September, Oamaru experiences a moderate precipitation level of 46 mm (1.8 in), marking a subtle rise from the drier winter months. With 9 days of recorded rainfall, this month hints at the transition into spring as the weather begins to warm. Comparing September’s precipitation to the preceding months reveals a consistent pattern of fluctuating moisture, with a notable increase in October, where averages jump significantly to 80 mm (3.2 in). This gradual uptick sets the stage for the wetter spring months ahead, while the relatively low precipitation also emphasizes the lingering effects of winter's chill.
In September, Oamaru experiences a notable dip in humidity at 83%, following the slightly higher levels of the winter months. This marks a gradual transition from the peak humidities observed during the colder months, with values consistently hovering around 84% and above in July and August. As spring begins to take hold, the humidity gently decreases, hinting at the anticipation of warmer, drier days ahead. This easing reflects a broader trend seen in Oamaru, where humidity levels tend to fluctuate throughout the year, peaking in the winter and gradually moderating as summer approaches.
As September rolls into Oamaru, the UV Index sits at a moderate 5, indicating a transitional phase in sun exposure as spring approaches. While this level suggests a moderate risk—allowing for a 30-minute burn time without protection—it marks a gradual increase from the lower indices of winter. This upward trend continues into October, where the index rises to 8, heralding the arrival of warmer, sunnier days. Despite this increase, September's level of UV exposure remains manageable compared to the peak summer months, making it a great time to enjoy outdoor activities with appropriate sun protection. Stay informed and check out the details on the Oamaru UV Index for safe sun practices!
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As September graces Oamaru with 252 hours of sunshine, the lingering warmth of winter begins to ebb, welcoming the vibrant colors of spring. This month's sunshine marks a notable increase compared to the previous months, particularly following the cooler, cloudier days of June and July, which recorded only 159 and 178 hours, respectively. The trend of daylight hours steadily rises through the early spring, setting the stage for an even brighter October with 282 hours and a dazzling November that shines with 319 hours. This gradual transition reveals the hopeful promise of longer days, inviting locals and visitors alike to enjoy the blossoming landscapes and outdoor adventures that Oamaru has to offer.
In Oamaru, New Zealand, the arrival of September marks a notable transition in weather patterns, bringing a 52% chance of sunshine that outshines the preceding months. This upswing in sunny days reflects a broader trend as the region shifts from the cooler winter months, characterized by lower chances of sun, toward the warmer spring season. Following a relatively cloudy winter, September's sun-filled days pave the way for October's dip in sunshine—highlighting the region's characteristic variability. As Oamaru moves further into spring, residents can look forward to a brightening landscape and increasingly pleasant weather, making September an enticing month for outdoor activities and exploration.
As September unfolds in Oamaru, New Zealand, the daylight duration sees a gentle resurgence, extending to 11 hours. This increase marks a significant transition from the shorter days of winter, as daylight gradually begins to reclaim its dominance over the darker months. Following the lowest points of June's 8 hours and July's 9 hours, September signals a comforting return to longer days, paving the way for the vibrant months ahead. With daylight extending by a further hour from August's 10 hours, residents can expect to enjoy more outdoor activities and the natural beauty of spring, as the trend of longer days continues into October and beyond.
As September unfolds in Oamaru, New Zealand, the average wind speed picks up slightly, maintaining a brisk 4.1 m/s (9 mph). This mirrors the gentle breezes of August, setting the stage for spring's arrival. Interestingly, after the relatively calm months of June and July, where winds dipped to 3.2 m/s (7 mph) and 3.5 m/s (8 mph), September marks a notable resurgence. The wind speeds throughout the year fluctuate subtly, with the highest winds on the horizon in the summer months of January and December, both at 4.5 m/s (10 mph). As autumn approaches, September serves as a transition, blending the lingering coolness of winter with the invigorating promise of warmer days ahead.
Weather in Oamaru varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Oamaru, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather generally presents cooler temperatures, with a minimum of 2°C (35°F) and an average of 9°C (49°F), reaching a maximum of 18°C (65°F). The month sees 46 mm (1.8 in) of precipitation over about 9 days, accompanied by relatively high humidity at 83%. In contrast, January features warmer conditions, with a minimum of 8°C (47°F) and an average of 15°C (60°F), peaking at 28°C (83°F). Precipitation increases to 79 mm (3.1 in) spread across 12 days, and humidity is slightly lower at 79%. For more details on January weather, visit Oamaru weather in January.
September and February present contrasting weather patterns. In September, temperatures tend to be cooler, with a minimum of 2°C (35°F) and an average of 9°C (49°F), peaking at 18°C (65°F). The month experiences 46 mm (1.8 in) of precipitation over 9 days, coupled with a high humidity of 83%. Conversely, February showcases warmer temperatures, starting at a minimum of 8°C (47°F), averaging 15°C (60°F), and reaching highs of 28°C (82°F). This month is also wetter, with 100 mm (3.9 in) of rain over 11 days, but the humidity is slightly lower at 76%. For a more detailed look at weather in February, visit Oamaru weather in February.
In September, temperatures in Oamaru exhibit a cooler range, with a minimum of 2°C (35°F) and a maximum of 18°C (65°F), averaging 9°C (49°F). The month experiences 46 mm (1.8 in) of precipitation over about 9 days, accompanied by a high humidity level of 83%. In contrast, March welcomes warmer weather, with temperatures ranging from a minimum of 7°C (46°F) to a comfortable maximum of 24°C (75°F), averaging 14°C (58°F). March sees an increase in precipitation to 66 mm (2.6 in) spread over 11 days, though humidity slightly decreases to 78%. For more detailed information, check out Oamaru weather in March.
In comparing the weather between September and April, we see notable differences in temperature and precipitation patterns. September tends to be cooler, with average temperatures ranging from 2°C (35°F) to a maximum of 18°C (65°F), while April experiences milder conditions with averages from 5°C (41°F) to a maximum of 22°C (73°F). Precipitation also varies, with September receiving about 46 mm (1.8 in) over 9 days, compared to April's higher total of 86 mm (3.4 in) spread across 12 days. Humidity levels remain similar, with September at 83% and April slightly lower at 81%. For more detailed information, you can check Oamaru weather in April.
September and May present similar temperature ranges, with both months experiencing minimum temperatures around 2°C (35°F), while May enjoys a slightly higher average temperature of 10°C (50°F) compared to September's 9°C (49°F). The maximum temperatures are also comparable, with September reaching up to 18°C (65°F) and May peaking at 17°C (64°F). Precipitation levels are fairly close, with September receiving 46 mm (1.8 in) over 9 days and May seeing 40 mm (1.6 in) across 8 days. Humidity levels are almost identical, hovering around 83% in September and 84% in May, contributing to a generally moist atmosphere in both months. For more detailed information, you can check Oamaru weather in May.
When comparing the weather in September and June, both months experience similar temperature ranges, with September averages slightly warmer at 9°C (49°F) compared to June's 8°C (46°F). However, September features higher maximum temperatures, reaching up to 18°C (65°F), whereas June peaks at 16°C (61°F). Precipitation is relatively close, with September receiving 46 mm (1.8 in) and June receiving 39 mm (1.5 in), both spread over 9 days. Humidity levels are comparable, with September at 83% and June slightly higher at 85%. For more detailed information, you can check Oamaru weather in June.
In comparing the weather between July and September, there are noticeable differences in temperature and precipitation patterns. September tends to be slightly warmer, with average temperatures reaching 9°C (49°F) compared to July's average of 7°C (45°F). The maximum temperatures also reflect this trend, peaking at 18°C (65°F) in September versus 15°C (59°F) in July. However, July experiences slightly higher precipitation, with 69 mm (2.7 in) over 10 days, compared to September's 46 mm (1.8 in) over 9 days. Humidity remains quite similar, hovering around 83% in September and 85% in July. For a detailed look at July weather specifics, you can refer to Oamaru weather in July.
In comparing the weather between August and September, September exhibits a slightly warmer trend, with an average temperature of 9°C (49°F), compared to August's average of 8°C (46°F). Both months share similar minimum temperatures at 2°C (35°F), but September boasts a higher maximum temperature of 18°C (65°F) versus August's 16°C (61°F). Precipitation levels are also comparable, with September receiving 46 mm (1.8 in) over nine days, slightly more than August's 39 mm (1.5 in) over the same number of days. Humidity remains relatively consistent, declining slightly from 84% in August to 83% in September. For a more detailed breakdown, you can check out Oamaru weather in August.
September and October exhibit a gradual transition in weather conditions. In September, temperatures range from a chilly minimum of 2°C (35°F) to a maximum of 18°C (65°F), with an average of 9°C (49°F). This month sees 46 mm (1.8 in) of precipitation over 9 days, coupled with high humidity at 83%. In contrast, October brings slightly warmer temperatures, with a minimum of 4°C (39°F) and a maximum reaching 20°C (68°F), averaging 11°C (51°F). However, it is also wetter, experiencing 80 mm (3.2 in) of precipitation over 15 days and slightly lower humidity at 80%. For a detailed perspective, check Oamaru weather in October.
In comparing the weather between September and November, September tends to be cooler with temperatures ranging from a minimum of 2°C (35°F) to a maximum of 18°C (65°F) and an average of 9°C (49°F). The month experiences about 46 mm (1.8 in) of precipitation across 9 days, with humidity levels at 83%. In contrast, November shows a noticeable increase in temperatures, with a minimum of 5°C (42°F) and a maximum of 25°C (77°F), averaging 13°C (55°F). However, it also sees a higher precipitation total of 100 mm (4.0 in) over 12 days, while humidity decreases slightly to 78%. For more detailed insights, you can visit Oamaru weather in November.
In September, the weather is generally cooler, with temperatures ranging from a minimum of 2°C (35°F) to a maximum of 18°C (65°F) and an average of 9°C (49°F). The month experiences moderate rainfall, totaling 46 mm (1.8 in) over approximately 9 days, with a relatively high humidity of 83%. In contrast, December brings warmer temperatures, with a minimum of 8°C (47°F), an average of 15°C (58°F), and a maximum of 24°C (76°F). However, it also sees increased precipitation at 101 mm (4.0 in) spread across 16 days, and slightly lower humidity of 81%. For more detailed information about December conditions, you can check Oamaru weather in December.
As September rolls in, Oamaru experiences a distinct transition marked by cooler temperatures and increasing humidity. With a maximum reaching 18°C, the month offers a refreshing respite from winter's chill, yet the average temperature settles at a brisk 9°C, nudging residents to layer up. Precipitation is quite common, with rain gracing 9 days throughout the month, amounting to around 46 mm. This blend of mild warmth and moisture sets September apart from other months, hinting at the lush spring that is just around the corner. For more insights into Oamaru's climate and what to expect throughout the year, check out Oamaru Climate.