September is one of the cooler months of the year in Mount Evelyn, with average highs near 15°C and lows around 6.7°C (mean 10.9°C). It is a relatively wet time of year, averaging 88 mm of rainfall and 78% relative humidity across the period.
September is one of the cooler months of the year in Mount Evelyn. Across 45 years of records, the warmest September in Mount Evelyn was 2023 — when the month averaged 14°C — while the coldest was 1992 at 8.4°C. Typical September days reach 15°C with nights near 6.7°C. The long-term trend is warming, about 0.5°C per decade.
September is a relatively wet time of year in Mount Evelyn, averaging 88 mm of rainfall. The wettest September on record was 1993 with 189 mm, while the driest was 2015 at 23 mm.
Relative humidity in Mount Evelyn during September averages 78%. The most humid September was 1992 at 88%, and the least humid was 2023 at 64%.
September receives about 3.9 kWh/m²/day of solar energy in Mount Evelyn. The sunniest September was 2023 at 4.6 kWh/m²/day, and the cloudiest was 1992 at 3.3.
Average wind speed in Mount Evelyn during September is 0.2 m/s. The windiest Septembers were 2023, 2024 and 2025, among others at 0.2 m/s, while the calmest were 1998 and 2016 at 0.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 10.3°C | 10.1°C | 11.2°C | 11.1°C | 12.2°C | +1.9°C |
| Avg High | 14.3°C | 14.1°C | 15.4°C | 15.3°C | 16.5°C | +2.2°C |
| Avg Low | 6.2°C | 6.2°C | 7.0°C | 6.9°C | 7.7°C | +1.5°C |
| Avg Rain | 94 mm | 117 mm | 92 mm | 72 mm | 56 mm | -38 mm |
September temperatures in Mount Evelyn have risen by about 2.2°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 0.5°C (1990) to a record high of 27.6°C (2017).
Rainfall in September is a relatively wet time of year, averaging 88 mm, with a wettest year of 189 mm.
A quieter season to visit Mount Evelyn
If your dates are flexible, the more temperate months of February and January tend to be the most comfortable for visiting Mount Evelyn. That said, September — with days averaging 15°C and nights around 6.7°C (mean 10.9°C) and higher rainfall (88 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 | 16.5°C | 12.4°C | 8.3°C | 21.9°C | 2.7°C | 32 mm | 68% | 0.2 m/s | 3.7 |
| 2024 | 16.5°C | 12.2°C | 7.9°C | 23.7°C | 3.9°C | 65 mm | 70% | 0.2 m/s | 3.7 |
| 2023 🔥 | 19.4°C | 14.0°C | 8.5°C | 27.0°C | 2.9°C | 29 mm | 64% | 0.2 m/s | 4.6 |
| 2022 | 15.0°C | 11.1°C | 7.1°C | 20.2°C | 1.9°C | 50 mm | 81% | 0.2 m/s | 3.4 |
| 2021 | 15.9°C | 11.5°C | 7.0°C | 22.0°C | 2.7°C | 104 mm | 75% | 0.2 m/s | 4.2 |
| 2020 | 15.9°C | 11.7°C | 7.4°C | 23.9°C | 1.2°C | 53 mm | 73% | 0.2 m/s | 4.1 |
| 2019 | 16.0°C | 11.4°C | 6.7°C | 22.4°C | 2.0°C | 60 mm | 74% | 0.2 m/s | 4.1 |
| 2018 | 16.3°C | 11.0°C | 5.6°C | 22.1°C | 1.5°C | 27 mm | 68% | 0.2 m/s | 4.4 |
| 2017 | 15.3°C | 11.1°C | 6.9°C | 27.6°C | 2.1°C | 56 mm | 70% | 0.2 m/s | 3.7 |
| 2016 | 15.0°C | 11.1°C | 7.2°C | 20.5°C | 4.4°C | 67 mm | 80% | 0.1 m/s | 3.5 |
| 2015 | 15.8°C | 11.1°C | 6.3°C | 22.9°C | 3.0°C | 23 mm | 75% | 0.2 m/s | 4.3 |
| 2014 | 15.6°C | 11.3°C | 7.1°C | 21.6°C | 1.8°C | 81 mm | 80% | 0.2 m/s | 4.2 |
| 2013 | 16.0°C | 12.3°C | 8.5°C | 21.7°C | 1.6°C | 107 mm | 80% | 0.2 m/s | 3.7 |
| 2012 | 14.7°C | 10.9°C | 7.2°C | 20.0°C | 2.7°C | 92 mm | 80% | 0.2 m/s | 3.9 |
| 2011 | 15.6°C | 11.3°C | 7.0°C | 22.4°C | 3.4°C | 106 mm | 76% | 0.2 m/s | 4 |
| 2010 | 13.0°C | 9.7°C | 6.4°C | 17.7°C | 2.2°C | 96 mm | 84% | 0.2 m/s | 3.4 |
| 2009 | 15.4°C | 11.4°C | 7.4°C | 22.4°C | 4.8°C | 148 mm | 77% | 0.2 m/s | 3.7 |
| 2008 | 16.1°C | 11.6°C | 7.1°C | 23.9°C | 2.9°C | 45 mm | 69% | 0.2 m/s | 4.4 |
| 2007 | 15.0°C | 10.7°C | 6.4°C | 17.8°C | 2.6°C | 77 mm | 77% | 0.2 m/s | 4 |
| 2006 | 17.3°C | 12.2°C | 7.1°C | 25.4°C | 2.7°C | 56 mm | 69% | 0.2 m/s | 4.3 |
| 2005 | 15.1°C | 11.1°C | 7.2°C | 21.5°C | 2.5°C | 107 mm | 80% | 0.2 m/s | 3.7 |
| 2004 | 14.3°C | 10.5°C | 6.8°C | 20.3°C | 3.0°C | 116 mm | 85% | 0.2 m/s | 3.5 |
| 2003 | 13.5°C | 9.7°C | 5.9°C | 20.0°C | 1.1°C | 88 mm | 79% | 0.2 m/s | 3.7 |
| 2002 | 15.8°C | 11.5°C | 7.1°C | 22.7°C | 3.0°C | 84 mm | 69% | 0.2 m/s | 3.8 |
| 2001 | 16.5°C | 12.0°C | 7.5°C | 23.0°C | 3.2°C | 56 mm | 79% | 0.2 m/s | 3.8 |
| 2000 | 14.7°C | 11.1°C | 7.6°C | 19.1°C | 4.2°C | 139 mm | 81% | 0.2 m/s | 3.7 |
| 1999 | 16.6°C | 11.9°C | 7.3°C | 23.2°C | 1.0°C | 69 mm | 78% | 0.2 m/s | 3.9 |
| 1998 | 16.0°C | 12.0°C | 8.0°C | 21.9°C | 1.6°C | 87 mm | 78% | 0.1 m/s | 3.8 |
| 1997 | 15.2°C | 10.8°C | 6.4°C | 18.0°C | 1.8°C | 73 mm | 82% | 0.2 m/s | 4.1 |
| 1996 | 13.3°C | 9.6°C | 5.9°C | 19.9°C | 2.1°C | 161 mm | 82% | 0.2 m/s | 3.5 |
| 1995 | 13.7°C | 9.5°C | 5.2°C | 19.6°C | 1.7°C | 67 mm | 83% | 0.2 m/s | 3.9 |
| 1994 | 12.6°C | 8.9°C | 5.1°C | 19.5°C | 0.7°C | 107 mm | 79% | 0.2 m/s | 3.6 |
| 1993 🌧️ | 14.1°C | 10.3°C | 6.6°C | 21.9°C | 0.7°C | 189 mm | 85% | 0.2 m/s | 3.8 |
| 1992 ❄️ | 11.6°C | 8.4°C | 5.2°C | 15.2°C | 1.5°C | 176 mm | 88% | 0.2 m/s | 3.3 |
| 1991 | 13.0°C | 9.4°C | 5.8°C | 19.2°C | 0.9°C | 147 mm | 85% | 0.2 m/s | 3.8 |
| 1990 | 14.4°C | 10.4°C | 6.4°C | 20.3°C | 0.5°C | 93 mm | 83% | 0.2 m/s | 4 |
| 1989 | 14.1°C | 10.1°C | 6.1°C | 20.4°C | 1.4°C | 82 mm | 84% | 0.2 m/s | 4 |
| 1988 | 15.5°C | 11.3°C | 7.1°C | 20.4°C | 3.5°C | 99 mm | 80% | 0.2 m/s | 3.9 |
| 1987 | 14.8°C | 11.0°C | 7.2°C | 24.0°C | 3.0°C | 70 mm | 82% | 0.2 m/s | 3.9 |
| 1986 | 13.8°C | 10.0°C | 6.2°C | 20.6°C | 3.5°C | 79 mm | 85% | 0.2 m/s | 3.6 |
| 1985 | 13.7°C | 9.7°C | 5.7°C | 20.3°C | 2.3°C | 66 mm | 85% | 0.2 m/s | 4.2 |
| 1984 | 12.8°C | 9.2°C | 5.7°C | 17.8°C | 2.6°C | 156 mm | 86% | 0.2 m/s | 3.9 |
| 1983 | 13.8°C | 10.0°C | 6.2°C | 19.3°C | 1.0°C | 142 mm | 84% | 0.2 m/s | — |
| 1982 | 14.7°C | 9.9°C | 5.0°C | 20.6°C | 1.1°C | 100 mm | 75% | 0.2 m/s | — |
| 1981 | 15.3°C | 11.2°C | 7.0°C | 23.1°C | 3.2°C | 51 mm | 81% | 0.2 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 15°C with lows near 6.7°C (mean 10.9°C), based on 45 years of NASA POWER data.
September averages 88 mm of rainfall in Mount Evelyn, a relatively wet time of year. The wettest on record was 189 mm in 1993.
The hottest September reached 27.6°C in 2017. The coldest dipped to 0.5°C in 1990.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 2.2°C. Daytime highs moved from 14.1°C to 16.7°C and overnight lows from 5.9°C to 7.8°C over the same span.
September is one of the cooler months of the year in Mount Evelyn and a relatively wet time of year, so plan for around 15°C daytime highs and 6.7°C at night.
Not quite — September is the 4th coolest month in Mount Evelyn, averaging 10.9°C.
For September in Mount Evelyn, pack warm layers and a jacket for chilly mornings, with typical highs of 15°C and lows of 6.7°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 78% — quite humid.
Average wind speed in September is 0.2 m/s. The windiest September on record averaged 0.2 m/s (1981).
The wettest September on record was 1993 with 189 mm. On average, September sees 88 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 Mount Evelyn 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.
