September is one of the cooler months of the year in Warwick, with average highs near 23.9°C and lows around 8.9°C (mean 16.4°C). It is one of the drier months, averaging 30 mm of rainfall and 61% relative humidity across the period.
September is one of the cooler months of the year in Warwick. Across 45 years of records, the warmest September in Warwick was 2013 — when the month averaged 19°C — while the coldest was 1984 at 13.1°C. Typical September days reach 23.9°C with nights near 8.9°C. The long-term trend is warming, about 0.6°C per decade.
September is one of the drier months in Warwick, averaging 30 mm of rainfall. The wettest September on record was 2010 with 100 mm, while the driest was 2017 at 1 mm.
Relative humidity in Warwick during September averages 61%. The most humid September was 1998 at 81%, and the least humid was 1991 at 43%.
September receives about 5.4 kWh/m²/day of solar energy in Warwick. The sunniest September was 2017 at 6.2 kWh/m²/day, and the cloudiest was 2010 at 4.1.
Average wind speed in Warwick during September is 2.4 m/s. The windiest Septembers were 1996 and 2016 at 2.8 m/s, while the calmest was 2025 at 1.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 15.3°C | 15.7°C | 17.2°C | 16.8°C | 17.5°C | +2.2°C |
| Avg High | 22.6°C | 23.1°C | 24.9°C | 24.3°C | 25.0°C | +2.4°C |
| Avg Low | 8.0°C | 8.3°C | 9.5°C | 9.2°C | 9.9°C | +1.9°C |
| Avg Rain | 33 mm | 37 mm | 28 mm | 28 mm | 18 mm | -15 mm |
September temperatures in Warwick have risen by about 2.3°C between 1981–1985 and 2021–2025.
September has ranged from a record low of -1.1°C (1987) to a record high of 36.1°C (2013).
Rainfall in September is one of the drier months, averaging 30 mm, with a wettest year of 100 mm.
A good time to visit Warwick
September is a good time to visit Warwick, with days averaging 23.9°C and nights around 8.9°C (mean 16.4°C, cooler than Warwick's yearly average) and low rainfall. March and November are marginally more temperate, but September still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 25.2°C | 17.6°C | 10.1°C | 32.1°C | 5.5°C | 11 mm | 61% | 1.9 m/s | 5.6 |
| 2024 | 26.6°C | 18.6°C | 10.6°C | 33.3°C | 6.3°C | 27 mm | 54% | 2.2 m/s | 5.4 |
| 2023 | 26.8°C | 18.6°C | 10.4°C | 33.4°C | 6.0°C | 11 mm | 55% | 2.1 m/s | 5.5 |
| 2022 | 22.3°C | 15.8°C | 9.3°C | 26.7°C | 5.6°C | 47 mm | 67% | 2.3 m/s | 4.7 |
| 2021 | 24.2°C | 16.5°C | 8.7°C | 29.8°C | 2.3°C | 11 mm | 56% | 2.5 m/s | 5.4 |
| 2020 | 25.2°C | 17.9°C | 10.5°C | 31.6°C | 3.8°C | 3 mm | 59% | 2.6 m/s | 5.2 |
| 2019 | 26.8°C | 18.3°C | 9.8°C | 31.5°C | 3.4°C | 4 mm | 43% | 2.4 m/s | 5.9 |
| 2018 | 24.6°C | 17.1°C | 9.5°C | 29.9°C | 6.4°C | 9 mm | 59% | 2.5 m/s | 5.2 |
| 2017 | 27.5°C | 18.7°C | 9.8°C | 35.7°C | 3.0°C | 1 mm | 43% | 2.6 m/s | 6.2 |
| 2016 | 22.6°C | 15.9°C | 9.2°C | 25.4°C | 5.0°C | 55 mm | 68% | 2.8 m/s | 4.8 |
| 2015 | 23.3°C | 15.7°C | 8.2°C | 28.3°C | 3.5°C | 18 mm | 63% | 2.2 m/s | 5.2 |
| 2014 | 22.8°C | 15.7°C | 8.6°C | 30.5°C | 2.0°C | 21 mm | 63% | 2.4 m/s | 5.4 |
| 2013 🔥 | 27.4°C | 19.0°C | 10.5°C | 36.1°C | 6.2°C | 26 mm | 54% | 2.2 m/s | 5.8 |
| 2012 | 24.3°C | 16.3°C | 8.4°C | 29.5°C | 1.7°C | 19 mm | 59% | 2 m/s | 5.7 |
| 2011 | 23.0°C | 15.5°C | 7.9°C | 28.8°C | 1.5°C | 30 mm | 62% | 2.2 m/s | 5.5 |
| 2010 🌧️ | 21.1°C | 15.7°C | 10.2°C | 25.2°C | 5.3°C | 100 mm | 78% | 2.1 m/s | 4.1 |
| 2009 | 24.9°C | 17.1°C | 9.2°C | 31.5°C | 4.4°C | 56 mm | 59% | 2.4 m/s | 5.9 |
| 2008 | 24.1°C | 17.2°C | 10.2°C | 31.7°C | 6.0°C | 48 mm | 67% | 2.4 m/s | 5.1 |
| 2007 | 23.7°C | 16.4°C | 9.0°C | 30.2°C | 4.8°C | 26 mm | 62% | 2.3 m/s | 5.5 |
| 2006 | 23.8°C | 16.8°C | 9.8°C | 30.3°C | 4.7°C | 51 mm | 68% | 2.4 m/s | 5.3 |
| 2005 | 24.8°C | 17.2°C | 9.5°C | 30.2°C | 3.0°C | 31 mm | 62% | 2.4 m/s | 5.3 |
| 2004 | 24.1°C | 16.5°C | 8.9°C | 32.6°C | 2.2°C | 29 mm | 58% | 2 m/s | 5.5 |
| 2003 | 26.8°C | 18.2°C | 9.6°C | 34.4°C | 4.7°C | 4 mm | 46% | 2.5 m/s | 6.1 |
| 2002 | 25.7°C | 17.6°C | 9.4°C | 33.7°C | 4.7°C | 12 mm | 54% | 2.5 m/s | 5.5 |
| 2001 | 23.6°C | 16.2°C | 8.8°C | 27.8°C | 4.5°C | 22 mm | 64% | 2.3 m/s | 5 |
| 2000 | 27.4°C | 18.9°C | 10.3°C | 34.4°C | 4.5°C | 4 mm | 47% | 2.4 m/s | 5.6 |
| 1999 | 22.9°C | 16.2°C | 9.5°C | 28.6°C | 3.7°C | 19 mm | 69% | 2.3 m/s | 5.2 |
| 1998 | 21.3°C | 16.0°C | 10.6°C | 28.9°C | 5.2°C | 86 mm | 81% | 2.2 m/s | 4.8 |
| 1997 | 24.2°C | 16.9°C | 9.7°C | 29.9°C | 5.5°C | 62 mm | 61% | 2.3 m/s | 5 |
| 1996 | 23.3°C | 15.3°C | 7.2°C | 29.8°C | 1.2°C | 57 mm | 61% | 2.8 m/s | 5.5 |
| 1995 | 24.2°C | 16.6°C | 9.0°C | 28.4°C | -0.1°C | 47 mm | 60% | 2.3 m/s | 5.2 |
| 1994 | 23.8°C | 15.3°C | 6.9°C | 28.1°C | 1.5°C | 12 mm | 46% | 2.5 m/s | 5.9 |
| 1993 | 22.2°C | 15.1°C | 8.1°C | 28.4°C | 3.6°C | 36 mm | 65% | 2.5 m/s | 5.1 |
| 1992 | 22.2°C | 14.5°C | 6.9°C | 30.0°C | 2.1°C | 34 mm | 59% | 2.5 m/s | 5.4 |
| 1991 | 24.8°C | 16.3°C | 7.9°C | 29.7°C | 1.1°C | 4 mm | 43% | 2.7 m/s | 5.9 |
| 1990 | 21.7°C | 14.6°C | 7.4°C | 28.1°C | 2.3°C | 14 mm | 67% | 2.4 m/s | 5.2 |
| 1989 | 23.5°C | 15.1°C | 6.7°C | 29.5°C | 2.6°C | 11 mm | 58% | 2.4 m/s | 6 |
| 1988 | 22.0°C | 15.7°C | 9.4°C | 32.3°C | 3.7°C | 57 mm | 74% | 2.5 m/s | 4.9 |
| 1987 | 23.1°C | 15.3°C | 7.4°C | 27.8°C | -1.1°C | 9 mm | 63% | 2.1 m/s | 5.7 |
| 1986 | 23.9°C | 16.2°C | 8.5°C | 30.8°C | 2.0°C | 23 mm | 60% | 2.4 m/s | 5.4 |
| 1985 | 21.3°C | 14.1°C | 7.0°C | 28.3°C | 1.3°C | 31 mm | 64% | 2.4 m/s | 5.5 |
| 1984 ❄️ | 20.2°C | 13.1°C | 6.0°C | 24.2°C | 0.5°C | 47 mm | 65% | 2.6 m/s | 5.9 |
| 1983 | 22.4°C | 16.2°C | 9.9°C | 27.6°C | 5.1°C | 50 mm | 78% | 2.2 m/s | — |
| 1982 | 22.5°C | 15.2°C | 7.8°C | 30.0°C | 3.2°C | 57 mm | 59% | 2.5 m/s | — |
| 1981 | 24.8°C | 16.9°C | 8.9°C | 32.0°C | 1.0°C | 12 mm | 60% | 2.1 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 23.9°C with lows near 8.9°C (mean 16.4°C), based on 45 years of NASA POWER data.
September averages 30 mm of rainfall in Warwick, one of the drier months. The wettest on record was 100 mm in 2010.
The hottest September reached 36.1°C in 2013. The coldest dipped to -1.1°C in 1987.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 2.3°C. Daytime highs moved from 22.2°C to 25°C and overnight lows from 7.9°C to 9.8°C over the same span.
September is one of the cooler months of the year in Warwick and one of the drier months, so plan for around 23.9°C daytime highs and 8.9°C at night.
Not quite — September is the 5th coolest month in Warwick, averaging 16.4°C.
For September in Warwick, pack light layers you can adjust through the day, with typical highs of 23.9°C and lows of 8.9°C.
Relative humidity in September averages 61% — moderately humid.
Average wind speed in September is 2.4 m/s. The windiest September on record averaged 2.8 m/s (1996).
The wettest September on record was 2010 with 100 mm. On average, September sees 30 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 Warwick 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.
