September Weather in Kaikoura, New Zealand

Last updated: August 31, 2025

September in Kaikoura, New Zealand offers a refreshing blend of crisp coastal air and vibrant landscapes. With maximum temperatures reaching 17°C (62°F) and an average of 10°C (50°F), residents and visitors can expect cool days and chilly nights, where temperatures dip to a minimum of 3°C (37°F). This transitional month brings 76 mm (3.0 in) of rainfall over approximately 11 days, creating an atmosphere rich in humidity at 82%. Embrace the invigorating climate of Kaikoura, where nature awakens, and the breathtaking scenery beckons exploration.

September Temperature in Kaikoura

September marks a transitional phase in Kaikoura, New Zealand, as the winter chill begins to fade and spring starts to unveil its warmth. With temperatures ranging from a chilly 3°C (37°F) at night to a pleasant 17°C (62°F) during the day, the city experiences a gentle rise in warmth. The average temperature of 10°C (50°F) suggests a refreshing shift that encourages outdoor activities and exploration. As the daylight hours lengthen and nature awakens, September offers an inviting glimpse into the mild and vibrant months ahead, making it an ideal time for visitors to enjoy the stunning scenery and wildlife that Kaikoura is famed for.

September Weather in Kaikoura: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Kaikoura, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kaikoura, September typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec626259565349474850525659
Data source: Temperature data for Kaikoura generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Kaikoura

In September, Kaikoura experiences a moderate precipitation total of 76 mm (3.0 in), marking a slight increase from the 68 mm seen in August. Rainfall is recorded on approximately 11 days, indicating a consistent pattern of wet weather that transitions the region into the spring season. This uptick in rainfall is part of a broader trend, as September's precipitation fits neatly within the generally wetter months from April through June, which often see totals exceeding 100 mm. Overall, while September maintains a moderate level of moisture, it paves the way for the drier, sunnier days expected in October and November.

September Precipitation Trends in Kaikoura

The chart displays monthly precipitation patterns in Kaikoura, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Kaikoura, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec507374110811179168768476106
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Kaikoura

In September, Kaikoura experiences a notable humidity level of 82%, aligning with the slightly elevated percentages seen in the preceding months. This trend reflects the transition into spring, as the region gradually shifts from the colder, more humid winter months—the peak of which occur in July with an average of 85% humidity. Following September, the humidity shows a slight decline in October to 79%, indicating a seasonal decrease that precedes the warmer months ahead. Overall, September's humidity underscores a period of sustained moisture, setting the stage for the vibrant changes of spring in this stunning coastal New Zealand town.

September Average Humidity in Kaikoura

This chart illustrates the average monthly humidity levels in Kaikoura, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Kaikoura is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec72%72%77%77%82%84%85%83%82%79%77%75%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Kaikoura

As September rolls into Kaikoura, the UV Index rises to 6, categorizing it as high and shortening the burn time to 25 minutes. This marks a transition from the lower indices of the winter months, where values hovered around 2, signaling a growing intensity of sunlight. Following the moderate exposure levels of August, September ushers in a renewed emphasis on sun safety as the warmer months approach. With the UV Index forecasted to escalate further into the spring, it's crucial to stay prepared and protected. For more detailed information, check out Kaikoura UV Index.

Maximum UV Index Levels in Kaikoura for September

The chart shows the monthly maximum UV Index (UVI) for Kaikoura in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Kaikoura typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec1313964224691113
Data source: Kaikoura September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

September Sunshine in Kaikoura

As September unfolds in Kaikoura, New Zealand, the region enjoys a delightful 252 hours of sunshine. While this marks a slight dip from the sun-drenched summer months of January and February, it still signals the approach of warmer days. Following the cooler, cloudier winter months, September plays a pivotal role in the transition to spring, heralding a gradual increase in light and warmth. This trend culminates in the brilliant sunshine of November and December, where sun hours soar to their peak, embracing visitors and locals alike in a golden glow. Overall, September stands as a bridge between seasons, offering plenty of sunshine for those eager to explore Kaikoura's breathtaking landscapes.

Monthly Sunshine Duration in Kaikoura: September Highlighted

The September sunshine duration represents the total number of hours Kaikoura experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec291h304h274h234h209h168h184h223h252h295h314h345h
Data source: Kaikoura September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Kaikoura During September

As September rolls in, Kaikoura begins to shake off the winter chill, offering a 54% chance of sunny weather. This marks a noticeable uptick from the previous months, with only June seeing a lower likelihood of sun at 37%. Compared to the summer months, where January enjoys a 50% chance, September indicates a promising shift towards clearer skies, hinting at the transition into spring. This gradual increase in sunshine opportunities continues into October, although it dips again to 34%. Overall, September stands out as a bright spot on Kaikoura's weather calendar, suggesting a delightful start to the warmer months ahead.

Percentage of Sunny Days in September in Kaikoura

The chart illustrates the percentage of sunny days in Kaikoura throughout the year, with September highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Kaikoura experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec50%45%47%57%51%37%51%47%54%34%36%36%
Data source: Kaikoura September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Kaikoura in September

As September arrives in Kaikoura, New Zealand, the daylight hours begin to transition from the winter months towards the warmth of spring. With 11 hours of daylight, September marks a notable increase from the 10 hours experienced in August, signaling the gradual return of longer, sunlit days. This shift is part of a broader seasonal trend: daylight duration peaks in December at 15 hours and starts to decrease sharply as summer gives way to the shorter days of winter. The rhythm of light and dark is an integral part of Kaikoura's charm, inviting both residents and visitors to bask in the vibrant beauty of the emerging spring season.

Average Daylight Hours in Kaikoura for September

The chart illustrates the variation in daylight duration in Kaikoura throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec14h 52m13h 44m12h 19m10h 54m9h 42m9h 6m9h 24m10h 26m11h 48m13h 14m14h 31m15h 12m
Data source: Kaikoura daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Kaikoura

As September arrives in Kaikoura, New Zealand, the wind whispers a gentle 3.8 m/s (8 mph), slightly lower than the breezy heights of the winter months. This month marks a transitional period, as the average wind speed dips from the gusty 4.2 m/s (9 mph) in August, hinting at the calmness of spring on the horizon. Throughout the year, wind speeds remain relatively stable, with averages hovering between 3.5 m/s and 4.2 m/s. Interestingly, the highest winds occur in mid-winter, while September's softness heralds a gradual shift towards warmer days. As the coastal landscape breathes in this moderate air, it's a beautiful reminder of the dynamic nature of Kaikoura's weather.

Average September Wind Speed in Kaikoura

The chart displays monthly wind speed patterns in Kaikoura, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.93.83.53.54.14.14.04.23.8 m/s4.13.53.9
Data source: Kaikoura September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Kaikoura Compares to Other Months

Weather in Kaikoura varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Kaikoura, focusing on differences in temperature, rainfall, humidity, and UV levels.

September and January showcase distinctly different weather patterns. In September, temperatures typically range from a chilly 3°C (37°F) at night to a mild 17°C (62°F) during the day, with an average of 10°C (50°F). This month is characterized by higher humidity at 82% and more frequent rainfall, averaging 76 mm (3.0 in) over 11 days. In contrast, January brings warmer conditions, with night temperatures starting at 9°C (49°F) and peaking at a warm 27°C (81°F), resulting in a comfortable average of 17°C (62°F). Precipitation decreases to 49 mm (1.9 in) over just 7 days, accompanied by lower humidity at 72%. For more information on January weather, you can visit Kaikoura weather in January.

When comparing the weather in September and February, notable differences emerge. September sees cooler temperatures, with a minimum of 3°C (37°F) and an average around 10°C (50°F), peaking at 17°C (62°F). In contrast, February enjoys much warmer weather, with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 25°C (77°F). Additionally, while September experiences more frequent rain with 76 mm (3.0 in) over 11 days, February is slightly drier, receiving 73 mm (2.9 in) of precipitation over just 7 days. The humidity in September is higher at 82%, compared to February's 72%, contributing to the overall feeling of the seasons. For further details on February weather, you can visit Kaikoura weather in February.

In comparing the weather of September and March, significant differences can be observed. September typically features cooler temperatures, with a minimum of 3°C (37°F) and an average of 10°C (50°F), while March enjoys milder conditions, starting at a minimum of 8°C (47°F) and averaging 15°C (60°F). The maximum temperatures in September reach 17°C (62°F), compared to a much warmer maximum of 24°C (75°F) in March, making the latter a more inviting month for outdoor activities. Both months experience similar levels of precipitation, with September receiving 76 mm (3.0 in) over 11 days and March slightly less at 74 mm (2.9 in) over 10 days. Humidity is also marginally lower in March at 77% compared to September's 82%. For more detailed insights, you can explore Kaikoura weather in March.

In September, the weather tends to be cooler, with average temperatures ranging from a minimum of 3°C (37°F) to a maximum of 17°C (62°F), and an overall average of 10°C (50°F). This month experiences about 76 mm (3.0 in) of precipitation over 11 days, resulting in a higher humidity level of 82%. In contrast, April brings milder conditions, with temperatures spanning from a minimum of 6°C (42°F) to a maximum of 21°C (70°F), leading to a comfortable average of 13°C (56°F). Even though April sees increased precipitation of 110 mm (4.3 in) over just 10 days, the humidity is slightly lower at 77%. For a detailed look at the weather patterns, you can check Kaikoura weather in April.

In comparing the weather of September and May, we see that both months share similar humidity levels of 82%, creating a consistently damp atmosphere. September has slightly cooler temperatures, with an average of 10°C (50°F) and a maximum of 17°C (62°F), while May experiences a bit warmer temperatures, averaging 12°C (53°F) and peaking at 19°C (66°F). Precipitation is comparable, with September receiving 76 mm (3.0 in) over 11 days, and May slightly higher at 81 mm (3.2 in) across 10 days. For more detailed insights on May weather, check out Kaikoura weather in May.

In September, temperatures range from a minimum of 3°C (37°F) to a maximum of 17°C (62°F), with an average of 10°C (50°F). This month experiences a total precipitation of 76 mm (3.0 in) over approximately 11 days, with humidity averaging at 82%. In contrast, June has slightly higher minimum temperatures at 4°C (40°F) and a maximum of 16°C (61°F), with an average of 9°C (49°F). However, June sees more rainfall, totaling 117 mm (4.6 in) across 14 days, along with a humidity level of 84%. Overall, while both months are relatively cool and humid, June tends to be wetter and slightly warmer than September. For more detailed information, you can check Kaikoura weather in June.

In comparing September and July weather, September generally offers a slightly warmer climate, with average temperatures reaching 10°C (50°F) compared to July's 9°C (48°F). Both months experience similar minimum temperatures at 3°C (37°F), while September boasts a higher maximum temperature of 17°C (62°F), in contrast to July's peak of 14°C (58°F). However, July features slightly more precipitation, with 91 mm (3.6 in) over 13 days, while September sees 76 mm (3.0 in) spread across 11 days. Humidity remains high in both months, with September at 82% and July at 85%. For a closer look at July's specific conditions, refer to Kaikoura weather in July.

In comparing the weather of September and August, we see a slight increase in temperatures across the board. September boasts a minimum temperature of 3°C (37°F), an average of 10°C (50°F), and a maximum of 17°C (62°F), while August features comparable minimum and maximum temperatures of 3°C (38°F) and 15°C (58°F), with an average of 9°C (48°F). Precipitation is slightly higher in September, totaling 76 mm (3.0 in) over 11 days, compared to August's 68 mm (2.7 in) across 12 days. Humidity remains consistent at 82% for both months, reflecting a generally damp atmosphere. For a detailed look at August weather, visit Kaikoura weather in August.

In comparing the weather of September and October, we see a noticeable shift towards milder temperatures. September experiences a minimum of 3°C (37°F) and an average of 10°C (50°F), while October sees slightly warmer conditions with a minimum of 4°C (40°F) and an average of 11°C (53°F). The maximum temperatures also rise in October to 21°C (69°F), compared to 17°C (62°F) in September. However, October is not without its challenges, experiencing an increase in precipitation to 84 mm (3.3 in) over 15 days, as opposed to 76 mm (3.0 in) over 11 days in September. The humidity remains relatively high in both months, slightly decreasing from 82% in September to 79% in October. Overall, while October offers warmer temperatures, it also brings more rainy days. For more detailed information, check out Kaikoura weather in October.

In September, temperatures tend to be cooler with a minimum of 3°C (37°F), averaging around 10°C (50°F), and reaching a maximum of 17°C (62°F). The month experiences 76 mm (3.0 in) of precipitation over 11 days, accompanied by relatively high humidity at 82%. In contrast, November brings milder temperatures, with a minimum of 7°C (45°F) and an average of 13°C (56°F), peaking at 22°C (72°F). Interestingly, November also sees the same amount of precipitation, 76 mm (3.0 in), over the same number of days, but with slightly lower humidity at 77%. For more detailed insights, you can check the Kaikoura weather in November.

In comparing the weather between September and December, December tends to be warmer with average temperatures ranging from a minimum of 8°C (47°F) to a maximum of 24°C (75°F), whereas September experiences cooler conditions with temperatures from 3°C (37°F) to 17°C (62°F). Additionally, December has higher precipitation levels at 106 mm (4.2 in) over 12 days, compared to September's 76 mm (3.0 in) over 11 days. While September has a higher humidity of 82%, December still maintains a comfortable level at 75%. For a detailed look at the weather specifics in December, you can visit Kaikoura weather in December.

Compare Kaikoura's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Kaikoura

As September unfolds in Kaikoura, the onset of spring brings a refreshing change to the weather, characterized by milder temperatures and a noticeable increase in humidity. Unlike the chillier winter months, residents and visitors can expect daytime highs reaching up to 17°C, offering a pleasant contrast to the cooler nights that dip to around 3°C. However, September is also known for its share of precipitation, with about 11 days of rain contributing to a total of 76 mm for the month. This combination of mild temperatures and frequent showers creates a dynamic landscape perfect for enjoying the vibrant rebirth of nature. For more detailed insights on weather patterns throughout the year, visit Kaikoura Climate.