September is one of the cooler months of the year in Kaitaia, with average highs near 15.6°C and lows around 12.6°C (mean 14.1°C). It is about average for rainfall, averaging 100 mm of rainfall and 81% relative humidity across the period.
September is one of the cooler months of the year in Kaitaia. Across 45 years of records, the warmest September in Kaitaia was 2005 — when the month averaged 15.3°C — while the coldest was 1992 at 12.5°C. Typical September days reach 15.6°C with nights near 12.6°C. The long-term September temperature trend is broadly flat.
September is about average for rainfall in Kaitaia, averaging 100 mm of rainfall. The wettest September on record was 2025 with 183 mm, while the driest was 2008 at 45 mm.
Relative humidity in Kaitaia during September averages 81%. The most humid Septembers were 1989 and 1996 at 85%, and the least humid was 1990 at 74%.
September receives about 4.1 kWh/m²/day of solar energy in Kaitaia. 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 Kaitaia during September is 5.7 m/s. The windiest September was 1994 at 7.4 m/s, while the calmest was 2006 at 3.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 14.1°C | 13.8°C | 14.4°C | 14.0°C | 14.3°C | +0.2°C |
| Avg High | 15.6°C | 15.3°C | 15.9°C | 15.4°C | 15.8°C | +0.2°C |
| Avg Low | 12.6°C | 12.3°C | 12.9°C | 12.6°C | 12.9°C | +0.3°C |
| Avg Rain | 117 mm | 115 mm | 73 mm | 97 mm | 104 mm | -13 mm |
September temperatures in Kaitaia have risen by about 0.4°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 8.9°C (1993) to a record high of 18.9°C (1989).
Rainfall in September is about average for rainfall, averaging 100 mm, with a wettest year of 183 mm.
A quieter season to visit Kaitaia
If your dates are flexible, the more temperate months of February and January tend to be the most comfortable for visiting Kaitaia. That said, September — with days averaging 15.6°C and nights around 12.6°C (mean 14.1°C) and higher rainfall (100 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 🌧️ | 16.0°C | 14.6°C | 13.3°C | 17.7°C | 10.9°C | 183 mm | 82% | 6 m/s | 4 |
| 2024 | 15.8°C | 14.3°C | 12.8°C | 18.0°C | 10.9°C | 93 mm | 83% | 5.5 m/s | 4.2 |
| 2023 | 16.0°C | 14.5°C | 13.0°C | 18.3°C | 11.1°C | 52 mm | 84% | 5.8 m/s | 4.3 |
| 2022 | 16.0°C | 14.6°C | 13.2°C | 17.8°C | 10.3°C | 121 mm | 80% | 5 m/s | 4.1 |
| 2021 | 15.5°C | 14.1°C | 12.7°C | 17.9°C | 10.8°C | 116 mm | 81% | 6.3 m/s | 4.1 |
| 2020 | 15.4°C | 13.9°C | 12.4°C | 18.4°C | 9.8°C | 58 mm | 80% | 5.5 m/s | 4.4 |
| 2019 | 15.6°C | 14.1°C | 12.7°C | 17.2°C | 10.4°C | 93 mm | 81% | 6.1 m/s | 4.2 |
| 2018 | 15.3°C | 13.9°C | 12.5°C | 18.2°C | 11.3°C | 72 mm | 80% | 5.4 m/s | 4.1 |
| 2017 | 15.3°C | 14.1°C | 12.8°C | 17.3°C | 10.8°C | 124 mm | 83% | 6.6 m/s | 4.2 |
| 2016 | 16.1°C | 14.7°C | 13.3°C | 18.8°C | 10.1°C | 99 mm | 82% | 4.7 m/s | 4 |
| 2015 | 15.0°C | 13.6°C | 12.1°C | 17.0°C | 10.6°C | 64 mm | 78% | 5.4 m/s | 4.3 |
| 2014 | 15.7°C | 14.3°C | 12.9°C | 17.5°C | 11.2°C | 95 mm | 83% | 6.2 m/s | 3.9 |
| 2013 | 15.2°C | 13.9°C | 12.6°C | 17.4°C | 9.7°C | 128 mm | 83% | 6.9 m/s | 3.7 |
| 2012 | 15.3°C | 14.0°C | 12.6°C | 17.4°C | 9.5°C | 129 mm | 79% | 6.9 m/s | 3.9 |
| 2011 | 14.9°C | 13.3°C | 11.8°C | 16.2°C | 10.0°C | 61 mm | 76% | 5.8 m/s | 4.3 |
| 2010 | 15.8°C | 14.3°C | 12.8°C | 17.9°C | 11.4°C | 106 mm | 82% | 6.5 m/s | 3.8 |
| 2009 | 16.0°C | 14.5°C | 13.0°C | 18.4°C | 8.9°C | 111 mm | 82% | 5.8 m/s | 4 |
| 2008 | 15.7°C | 14.2°C | 12.7°C | 17.3°C | 10.6°C | 45 mm | 81% | 5.3 m/s | 4.2 |
| 2007 | 15.9°C | 14.4°C | 13.0°C | 17.8°C | 11.3°C | 101 mm | 82% | 5.4 m/s | 3.8 |
| 2006 | 15.9°C | 14.5°C | 13.0°C | 17.8°C | 10.8°C | 47 mm | 81% | 3.9 m/s | 4.3 |
| 2005 🔥 | 16.7°C | 15.3°C | 13.9°C | 18.5°C | 11.8°C | 82 mm | 79% | 5.9 m/s | 4 |
| 2004 | 15.0°C | 13.5°C | 12.0°C | 16.8°C | 10.5°C | 79 mm | 79% | 6.4 m/s | 3.9 |
| 2003 | 15.6°C | 14.3°C | 12.9°C | 18.1°C | 10.6°C | 104 mm | 83% | 6.7 m/s | 3.8 |
| 2002 | 15.7°C | 14.1°C | 12.4°C | 18.1°C | 9.8°C | 53 mm | 80% | 5.6 m/s | 4.2 |
| 2001 | 16.5°C | 14.8°C | 13.2°C | 18.9°C | 12.1°C | 55 mm | 80% | 4.7 m/s | 4.2 |
| 2000 | 15.7°C | 14.1°C | 12.5°C | 17.7°C | 10.7°C | 52 mm | 79% | 5.5 m/s | 4.1 |
| 1999 | 16.1°C | 14.6°C | 13.0°C | 18.4°C | 11.2°C | 58 mm | 79% | 4.9 m/s | 4.3 |
| 1998 | 16.3°C | 14.7°C | 13.2°C | 18.9°C | 11.3°C | 82 mm | 79% | 5.4 m/s | 4 |
| 1997 | 15.5°C | 14.0°C | 12.6°C | 17.2°C | 10.2°C | 166 mm | 84% | 6.1 m/s | 3.9 |
| 1996 | 16.4°C | 14.8°C | 13.1°C | 18.1°C | 11.2°C | 146 mm | 85% | 5.5 m/s | 4 |
| 1995 | 15.4°C | 13.9°C | 12.5°C | 18.2°C | 9.3°C | 116 mm | 79% | 4.7 m/s | 4.2 |
| 1994 | 14.5°C | 13.0°C | 11.6°C | 16.6°C | 9.7°C | 113 mm | 80% | 7.4 m/s | 3.9 |
| 1993 | 14.4°C | 13.0°C | 11.6°C | 16.9°C | 8.9°C | 122 mm | 77% | 5.9 m/s | 4.1 |
| 1992 ❄️ | 13.9°C | 12.5°C | 11.1°C | 15.5°C | 9.1°C | 161 mm | 83% | 5.8 m/s | 4 |
| 1991 | 15.3°C | 13.9°C | 12.5°C | 16.9°C | 10.5°C | 103 mm | 82% | 5.9 m/s | 4.2 |
| 1990 | 14.9°C | 13.3°C | 11.7°C | 16.7°C | 9.7°C | 81 mm | 74% | 4.4 m/s | 4.4 |
| 1989 | 16.3°C | 14.8°C | 13.4°C | 18.9°C | 11.1°C | 177 mm | 85% | 6 m/s | 3.7 |
| 1988 | 16.0°C | 14.5°C | 13.1°C | 18.4°C | 10.7°C | 170 mm | 82% | 5.1 m/s | 3.6 |
| 1987 | 15.3°C | 14.0°C | 12.6°C | 17.0°C | 11.1°C | 89 mm | 80% | 6.6 m/s | 3.7 |
| 1986 | 15.0°C | 13.4°C | 11.8°C | 16.6°C | 10.2°C | 80 mm | 81% | 5.1 m/s | 4.3 |
| 1985 | 15.5°C | 14.1°C | 12.7°C | 17.7°C | 11.2°C | 154 mm | 81% | 7.1 m/s | 4 |
| 1984 | 15.8°C | 14.2°C | 12.6°C | 17.1°C | 11.3°C | 98 mm | 80% | 5.1 m/s | 4.1 |
| 1983 | 15.8°C | 14.3°C | 12.7°C | 18.1°C | 10.6°C | 86 mm | 82% | 5.9 m/s | — |
| 1982 | 15.4°C | 13.9°C | 12.4°C | 17.4°C | 10.0°C | 95 mm | 81% | 5.2 m/s | — |
| 1981 | 15.0°C | 13.5°C | 12.1°C | 17.2°C | 10.8°C | 101 mm | 79% | 6.5 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 15.6°C with lows near 12.6°C (mean 14.1°C), based on 45 years of NASA POWER data.
September averages 100 mm of rainfall in Kaitaia, about average for rainfall. The wettest on record was 183 mm in 2025.
The hottest September reached 18.9°C in 1989. The coldest dipped to 8.9°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 15.5°C to 15.9°C and overnight lows from 12.5°C to 13°C over the same span.
September is one of the cooler months of the year in Kaitaia and about average for rainfall, so plan for around 15.6°C daytime highs and 12.6°C at night.
Not quite — September is the 3rd coolest month in Kaitaia, averaging 14.1°C.
For September in Kaitaia, pack light layers you can adjust through the day, with typical highs of 15.6°C and lows of 12.6°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 183 mm. On average, September sees 100 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 Kaitaia 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.
