September is one of the cooler months of the year in Launceston, with average highs near 13.2°C and lows around 3.6°C (mean 8.4°C). It is a relatively wet time of year, averaging 86 mm of rainfall and 85% relative humidity across the period.
September is one of the cooler months of the year in Launceston. Across 45 years of records, the warmest September in Launceston was 2023 — when the month averaged 10.3°C — while the coldest were 1994 and 2003 at 6.6°C. Typical September days reach 13.2°C with nights near 3.6°C. The long-term trend is warming, about 0.2°C per decade.
September is a relatively wet time of year in Launceston, averaging 86 mm of rainfall. The wettest September on record was 1996 with 179 mm, while the driest was 2015 at 23 mm.
Relative humidity in Launceston during September averages 85%. The most humid September was 1988 at 88%, and the least humid was 2023 at 79%.
September receives about 3.8 kWh/m²/day of solar energy in Launceston. The sunniest Septembers were 1987, 2019 and 2023 at 4.2 kWh/m²/day, and the cloudiest was 2009 at 3.3.
Average wind speed in Launceston during September is 2.6 m/s. The windiest September was 2002 at 3.6 m/s, while the calmest were 1997 and 2015 at 1.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 8.3°C | 7.8°C | 8.5°C | 8.6°C | 9.0°C | +0.7°C |
| Avg High | 13.1°C | 12.5°C | 13.1°C | 13.5°C | 13.8°C | +0.7°C |
| Avg Low | 3.5°C | 3.1°C | 3.8°C | 3.7°C | 4.2°C | +0.7°C |
| Avg Rain | 91 mm | 92 mm | 112 mm | 72 mm | 52 mm | -39 mm |
September temperatures in Launceston have risen by about 0.9°C between 1981–1985 and 2021–2025.
September has ranged from a record low of -2.7°C (1994) to a record high of 22.2°C (2023).
Rainfall in September is a relatively wet time of year, averaging 86 mm, with a wettest year of 179 mm.
A quieter season to visit Launceston
If your dates are flexible, the more temperate months of February and January tend to be the most comfortable for visiting Launceston. That said, September — with days averaging 13.2°C and nights around 3.6°C (mean 8.4°C) and higher rainfall (86 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 | 13.5°C | 8.9°C | 4.3°C | 16.6°C | 0.5°C | 64 mm | 80% | 3.4 m/s | 3.8 |
| 2024 | 13.3°C | 8.6°C | 4.0°C | 16.1°C | -0.7°C | 67 mm | 82% | 3.5 m/s | 3.6 |
| 2023 🔥 | 15.9°C | 10.3°C | 4.7°C | 22.2°C | 0.4°C | 29 mm | 79% | 2.7 m/s | 4.2 |
| 2022 | 13.6°C | 8.9°C | 4.2°C | 18.5°C | -0.7°C | 56 mm | 84% | 2.1 m/s | 3.6 |
| 2021 | 13.2°C | 8.3°C | 3.3°C | 18.4°C | -0.5°C | 56 mm | 82% | 2.9 m/s | 4 |
| 2020 | 13.1°C | 8.8°C | 4.6°C | 18.2°C | 0.2°C | 41 mm | 86% | 2.7 m/s | 3.7 |
| 2019 | 14.0°C | 8.6°C | 3.2°C | 19.5°C | -1.2°C | 48 mm | 81% | 2.3 m/s | 4.2 |
| 2018 | 13.5°C | 8.4°C | 3.3°C | 17.5°C | -1.3°C | 32 mm | 82% | 2.6 m/s | 4.1 |
| 2017 | 12.5°C | 7.8°C | 3.0°C | 16.8°C | 0.3°C | 58 mm | 83% | 3 m/s | 3.8 |
| 2016 | 13.9°C | 9.3°C | 4.7°C | 16.6°C | 0.6°C | 91 mm | 86% | 2 m/s | 3.5 |
| 2015 | 14.2°C | 9.0°C | 3.8°C | 18.9°C | -2.0°C | 23 mm | 83% | 1.9 m/s | 4.1 |
| 2014 | 14.4°C | 9.3°C | 4.3°C | 18.6°C | -0.6°C | 70 mm | 84% | 2.4 m/s | 4.1 |
| 2013 | 13.5°C | 9.0°C | 4.6°C | 18.1°C | -0.3°C | 126 mm | 87% | 2.6 m/s | 3.6 |
| 2012 | 13.1°C | 8.6°C | 4.1°C | 17.0°C | -1.2°C | 115 mm | 87% | 2.8 m/s | 3.6 |
| 2011 | 13.5°C | 8.5°C | 3.4°C | 18.3°C | -0.5°C | 64 mm | 85% | 2.6 m/s | 4 |
| 2010 | 12.3°C | 7.6°C | 2.8°C | 16.8°C | -1.0°C | 95 mm | 83% | 3 m/s | 3.9 |
| 2009 | 12.9°C | 8.6°C | 4.2°C | 15.9°C | 1.8°C | 129 mm | 88% | 3 m/s | 3.3 |
| 2008 | 13.0°C | 8.1°C | 3.2°C | 17.0°C | -1.0°C | 105 mm | 84% | 3.1 m/s | 3.6 |
| 2007 | 13.3°C | 8.4°C | 3.6°C | 16.1°C | -1.2°C | 88 mm | 85% | 2.7 m/s | 3.6 |
| 2006 | 13.9°C | 8.7°C | 3.5°C | 17.7°C | -0.3°C | 82 mm | 83% | 2.8 m/s | 4 |
| 2005 | 13.5°C | 9.2°C | 4.8°C | 18.2°C | 0.9°C | 123 mm | 87% | 2.2 m/s | 3.5 |
| 2004 | 13.8°C | 8.8°C | 3.8°C | 17.2°C | -0.8°C | 45 mm | 85% | 2.1 m/s | 3.9 |
| 2003 | 11.2°C | 6.6°C | 1.9°C | 13.9°C | -2.0°C | 146 mm | 85% | 3.3 m/s | 3.9 |
| 2002 | 12.6°C | 8.1°C | 3.6°C | 17.8°C | -0.1°C | 157 mm | 85% | 3.6 m/s | 3.7 |
| 2001 | 14.4°C | 9.8°C | 5.2°C | 19.3°C | 0.6°C | 97 mm | 86% | 2.4 m/s | 3.8 |
| 2000 | 12.4°C | 8.4°C | 4.3°C | 17.2°C | 0.5°C | 150 mm | 87% | 3.5 m/s | 3.5 |
| 1999 | 14.1°C | 9.4°C | 4.7°C | 18.7°C | -0.5°C | 58 mm | 87% | 2.3 m/s | 3.7 |
| 1998 | 13.6°C | 9.3°C | 5.0°C | 16.5°C | 0.9°C | 149 mm | 86% | 2.8 m/s | 3.7 |
| 1997 | 13.3°C | 8.4°C | 3.4°C | 15.8°C | -0.2°C | 102 mm | 85% | 1.9 m/s | 3.8 |
| 1996 🌧️ | 10.9°C | 6.8°C | 2.6°C | 14.2°C | -0.4°C | 179 mm | 87% | 3.1 m/s | 3.5 |
| 1995 | 11.8°C | 7.1°C | 2.4°C | 16.2°C | -1.0°C | 61 mm | 85% | 2.6 m/s | 3.7 |
| 1994 ❄️ | 11.6°C | 6.6°C | 1.6°C | 16.5°C | -2.7°C | 53 mm | 83% | 2.6 m/s | 4 |
| 1993 | 13.4°C | 8.6°C | 3.7°C | 18.5°C | -1.0°C | 77 mm | 85% | 2.2 m/s | 3.8 |
| 1992 | 11.3°C | 6.9°C | 2.5°C | 15.6°C | -0.7°C | 98 mm | 86% | 2.3 m/s | 3.7 |
| 1991 | 12.3°C | 7.3°C | 2.4°C | 15.6°C | -1.1°C | 79 mm | 86% | 2.3 m/s | 3.9 |
| 1990 | 12.9°C | 7.9°C | 3.0°C | 16.2°C | -1.8°C | 62 mm | 86% | 2.4 m/s | 3.7 |
| 1989 | 13.0°C | 8.3°C | 3.5°C | 17.1°C | 0.4°C | 100 mm | 86% | 2.3 m/s | 3.8 |
| 1988 | 13.8°C | 9.3°C | 4.9°C | 16.5°C | -0.3°C | 106 mm | 88% | 2.8 m/s | 3.5 |
| 1987 | 14.2°C | 8.8°C | 3.4°C | 20.5°C | -0.6°C | 46 mm | 84% | 2.4 m/s | 4.2 |
| 1986 | 12.5°C | 7.8°C | 3.1°C | 16.4°C | -0.6°C | 95 mm | 87% | 2.6 m/s | 3.6 |
| 1985 | 13.7°C | 8.3°C | 2.9°C | 17.1°C | -0.1°C | 35 mm | 84% | 2.1 m/s | 4.1 |
| 1984 | 12.2°C | 7.9°C | 3.6°C | 14.9°C | -1.2°C | 165 mm | 87% | 2.4 m/s | 3.7 |
| 1983 | 12.3°C | 7.9°C | 3.5°C | 16.1°C | -1.4°C | 121 mm | 86% | 3.1 m/s | — |
| 1982 | 12.8°C | 7.7°C | 2.6°C | 17.7°C | -1.2°C | 89 mm | 84% | 2.6 m/s | — |
| 1981 | 13.7°C | 8.8°C | 4.0°C | 16.6°C | 0.3°C | 58 mm | 86% | 3 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 13.2°C with lows near 3.6°C (mean 8.4°C), based on 45 years of NASA POWER data.
September averages 86 mm of rainfall in Launceston, a relatively wet time of year. The wettest on record was 179 mm in 1996.
The hottest September reached 22.2°C in 2023. The coldest dipped to -2.7°C in 1994.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 0.9°C. Daytime highs moved from 12.9°C to 13.9°C and overnight lows from 3.3°C to 4.1°C over the same span.
September is one of the cooler months of the year in Launceston and a relatively wet time of year, so plan for around 13.2°C daytime highs and 3.6°C at night.
Not quite — September is the 4th coolest month in Launceston, averaging 8.4°C.
For September in Launceston, pack warm layers and a jacket for chilly mornings, with typical highs of 13.2°C and lows of 3.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 85% — quite humid.
Average wind speed in September is 2.6 m/s. The windiest September on record averaged 3.6 m/s (2002).
The wettest September on record was 1996 with 179 mm. On average, September sees 86 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 Launceston 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.
