September is one of the cooler months of the year in Kerikeri, with average highs near 15.9°C and lows around 11.8°C (mean 13.9°C). It is about average for rainfall, averaging 102 mm of rainfall and 81% relative humidity across the period.
September is one of the cooler months of the year in Kerikeri. Across 45 years of records, the warmest September in Kerikeri was 2005 — when the month averaged 15°C — while the coldest was 1992 at 12.2°C. Typical September days reach 15.9°C with nights near 11.8°C. The long-term September temperature trend is broadly flat.
September is about average for rainfall in Kerikeri, averaging 102 mm of rainfall. The wettest September on record was 2025 with 210 mm, while the driest was 2006 at 39 mm.
Relative humidity in Kerikeri during September averages 81%. The most humid September was 1989 at 85%, and the least humid was 1990 at 75%.
September receives about 4.1 kWh/m²/day of solar energy in Kerikeri. The sunniest Septembers were 1990 and 2020 at 4.4 kWh/m²/day, and the cloudiest was 1988 at 3.6.
Average wind speed in Kerikeri during September is 5.7 m/s. The windiest September was 1994 at 7.4 m/s, while the calmest was 2006 at 3.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 13.9°C | 13.6°C | 14.2°C | 13.8°C | 14.1°C | +0.2°C |
| Avg High | 15.9°C | 15.6°C | 16.3°C | 15.8°C | 16.2°C | +0.3°C |
| Avg Low | 11.8°C | 11.5°C | 12.1°C | 11.8°C | 12.1°C | +0.3°C |
| Avg Rain | 118 mm | 104 mm | 71 mm | 104 mm | 122 mm | +4 mm |
September temperatures in Kerikeri have risen by about 0.4°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 7.2°C (1993) to a record high of 20.5°C (2023).
Rainfall in September is about average for rainfall, averaging 102 mm, with a wettest year of 210 mm.
A quieter season to visit Kerikeri
If your dates are flexible, the more temperate months of February and January tend to be the most comfortable for visiting Kerikeri. That said, September — with days averaging 15.9°C and nights around 11.8°C (mean 13.9°C) and higher rainfall (102 mm) — can still be rewarding for travellers who don't mind the cooler conditions, and often means fewer crowds.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 🌧️ | 16.3°C | 14.4°C | 12.6°C | 19.1°C | 9.4°C | 210 mm | 82% | 6.1 m/s | 4 |
| 2024 | 16.3°C | 14.1°C | 11.9°C | 19.1°C | 9.7°C | 94 mm | 83% | 5.4 m/s | 4.2 |
| 2023 | 16.6°C | 14.5°C | 12.5°C | 20.5°C | 10.0°C | 74 mm | 84% | 5.8 m/s | 4.3 |
| 2022 | 16.4°C | 14.5°C | 12.6°C | 18.2°C | 9.2°C | 148 mm | 79% | 5 m/s | 4.1 |
| 2021 | 15.7°C | 13.7°C | 11.8°C | 18.1°C | 9.7°C | 137 mm | 81% | 6.3 m/s | 4.1 |
| 2020 | 15.8°C | 13.6°C | 11.4°C | 18.7°C | 8.4°C | 70 mm | 80% | 5.5 m/s | 4.4 |
| 2019 | 16.0°C | 13.9°C | 11.9°C | 17.3°C | 9.6°C | 97 mm | 82% | 6.1 m/s | 4.2 |
| 2018 | 15.8°C | 13.7°C | 11.6°C | 18.4°C | 9.7°C | 77 mm | 81% | 5.2 m/s | 4.1 |
| 2017 | 15.7°C | 13.9°C | 12.1°C | 18.1°C | 10.0°C | 133 mm | 83% | 6.4 m/s | 4.2 |
| 2016 | 16.6°C | 14.6°C | 12.6°C | 19.3°C | 8.8°C | 105 mm | 82% | 4.6 m/s | 4 |
| 2015 | 15.3°C | 13.2°C | 11.1°C | 17.6°C | 9.4°C | 92 mm | 79% | 5.3 m/s | 4.3 |
| 2014 | 16.1°C | 14.1°C | 12.1°C | 17.5°C | 8.8°C | 87 mm | 83% | 6.1 m/s | 3.9 |
| 2013 | 15.5°C | 13.7°C | 11.9°C | 18.2°C | 8.0°C | 131 mm | 83% | 6.8 m/s | 3.7 |
| 2012 | 15.6°C | 13.8°C | 12.0°C | 18.5°C | 7.5°C | 129 mm | 79% | 6.7 m/s | 3.9 |
| 2011 | 15.1°C | 13.0°C | 10.9°C | 17.2°C | 8.7°C | 68 mm | 77% | 5.7 m/s | 4.3 |
| 2010 | 16.0°C | 14.0°C | 12.0°C | 17.7°C | 10.0°C | 118 mm | 83% | 6.4 m/s | 3.8 |
| 2009 | 16.4°C | 14.3°C | 12.3°C | 18.7°C | 7.7°C | 99 mm | 82% | 5.8 m/s | 4 |
| 2008 | 16.3°C | 14.1°C | 11.9°C | 18.0°C | 10.1°C | 47 mm | 80% | 5.3 m/s | 4.2 |
| 2007 | 16.1°C | 14.3°C | 12.4°C | 18.5°C | 9.9°C | 98 mm | 82% | 5.3 m/s | 3.8 |
| 2006 | 16.8°C | 14.5°C | 12.3°C | 19.6°C | 10.4°C | 39 mm | 80% | 3.8 m/s | 4.3 |
| 2005 🔥 | 16.8°C | 15.0°C | 13.2°C | 18.5°C | 10.5°C | 77 mm | 79% | 5.8 m/s | 4 |
| 2004 | 15.4°C | 13.3°C | 11.1°C | 17.7°C | 9.4°C | 68 mm | 79% | 6.3 m/s | 3.9 |
| 2003 | 15.9°C | 14.2°C | 12.4°C | 19.1°C | 9.8°C | 119 mm | 83% | 6.8 m/s | 3.8 |
| 2002 | 16.2°C | 13.9°C | 11.5°C | 19.0°C | 8.8°C | 53 mm | 79% | 5.5 m/s | 4.2 |
| 2001 | 16.7°C | 14.6°C | 12.4°C | 18.9°C | 10.5°C | 57 mm | 80% | 4.5 m/s | 4.2 |
| 2000 | 16.1°C | 13.8°C | 11.6°C | 18.1°C | 9.3°C | 48 mm | 79% | 5.4 m/s | 4.1 |
| 1999 | 16.7°C | 14.4°C | 12.1°C | 18.7°C | 9.2°C | 64 mm | 79% | 4.9 m/s | 4.3 |
| 1998 | 16.8°C | 14.7°C | 12.5°C | 19.6°C | 10.1°C | 76 mm | 79% | 5.4 m/s | 4 |
| 1997 | 15.6°C | 13.7°C | 11.8°C | 18.4°C | 8.7°C | 153 mm | 84% | 6.1 m/s | 3.9 |
| 1996 | 16.7°C | 14.6°C | 12.4°C | 19.0°C | 9.8°C | 125 mm | 84% | 5.6 m/s | 4 |
| 1995 | 15.8°C | 13.7°C | 11.7°C | 19.2°C | 7.7°C | 123 mm | 79% | 4.6 m/s | 4.2 |
| 1994 | 14.8°C | 12.8°C | 10.7°C | 16.8°C | 8.9°C | 97 mm | 80% | 7.4 m/s | 3.9 |
| 1993 | 14.8°C | 12.8°C | 10.8°C | 18.3°C | 7.2°C | 103 mm | 77% | 5.9 m/s | 4.1 |
| 1992 ❄️ | 14.2°C | 12.2°C | 10.2°C | 16.3°C | 7.8°C | 138 mm | 83% | 5.7 m/s | 4 |
| 1991 | 15.5°C | 13.7°C | 11.8°C | 17.4°C | 9.1°C | 95 mm | 82% | 5.9 m/s | 4.2 |
| 1990 | 15.2°C | 13.0°C | 10.8°C | 16.9°C | 8.8°C | 62 mm | 75% | 4.2 m/s | 4.4 |
| 1989 | 16.3°C | 14.5°C | 12.7°C | 18.9°C | 9.2°C | 193 mm | 85% | 5.9 m/s | 3.7 |
| 1988 | 16.5°C | 14.5°C | 12.4°C | 18.3°C | 9.0°C | 179 mm | 82% | 5.3 m/s | 3.6 |
| 1987 | 15.8°C | 13.8°C | 11.8°C | 18.5°C | 10.5°C | 76 mm | 79% | 6.5 m/s | 3.7 |
| 1986 | 15.5°C | 13.2°C | 10.8°C | 17.8°C | 9.1°C | 92 mm | 81% | 5.1 m/s | 4.3 |
| 1985 | 15.4°C | 13.8°C | 12.1°C | 18.8°C | 9.9°C | 138 mm | 81% | 7.1 m/s | 4 |
| 1984 | 16.1°C | 13.9°C | 11.8°C | 18.0°C | 9.9°C | 104 mm | 79% | 5.1 m/s | 4.1 |
| 1983 | 16.5°C | 14.2°C | 11.9°C | 18.6°C | 9.5°C | 99 mm | 81% | 6 m/s | — |
| 1982 | 15.8°C | 13.7°C | 11.6°C | 17.8°C | 8.1°C | 85 mm | 80% | 5 m/s | — |
| 1981 | 15.4°C | 13.3°C | 11.2°C | 18.0°C | 9.8°C | 98 mm | 80% | 6.6 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 15.9°C with lows near 11.8°C (mean 13.9°C), based on 45 years of NASA POWER data.
September averages 102 mm of rainfall in Kerikeri, about average for rainfall. The wettest on record was 210 mm in 2025.
The hottest September reached 20.5°C in 2023. The coldest dipped to 7.2°C in 1993.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 0.4°C. Daytime highs moved from 15.8°C to 16.3°C and overnight lows from 11.7°C to 12.3°C over the same span.
September is one of the cooler months of the year in Kerikeri and about average for rainfall, so plan for around 15.9°C daytime highs and 11.8°C at night.
Not quite — September is the 3rd coolest month in Kerikeri, averaging 13.9°C.
For September in Kerikeri, pack light layers you can adjust through the day, with typical highs of 15.9°C and lows of 11.8°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 81% — quite humid.
Average wind speed in September is 5.7 m/s. The windiest September on record averaged 7.4 m/s (1994).
The wettest September on record was 2025 with 210 mm. On average, September sees 102 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Kerikeri behaves each September, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for September specifically, along with year-by-year records and how the month has changed over the decades.
