September is one of the warmer months of the year in Banda, with average highs near 34.6°C and lows around 21.4°C (mean 28°C). It is a relatively wet time of year, averaging 157 mm of rainfall and 81% relative humidity across the period.
September is one of the warmer months of the year in Banda. Across 45 years of records, the warmest Septembers in Banda were 1989 and 2015 — when the month averaged 30.7°C — while the coldest was 1994 at 25°C. Typical September days reach 34.6°C with nights near 21.4°C. The long-term trend is warming, about 0.2°C per decade.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 28.4°C | 27.2°C | 28.2°C | 28.2°C | 28.4°C | 0°C |
| Avg High | 35.7°C | 33.6°C | 35.0°C | 34.7°C | 34.1°C | -1.6°C |
| Avg Low | 21.1°C | 20.8°C | 21.3°C | 21.6°C | 22.7°C | +1.6°C |
| Avg Rain | 157 mm | 173 mm | 152 mm | 146 mm | 157 mm | +0 mm |
September temperatures in Banda have risen by about 0.9°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 16.8°C (1994) to a record high of 39.4°C (2015).
Rainfall in September is a relatively wet time of year, averaging 157 mm, with a wettest year of 433 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.1°C per decade while lows rose 0.4°C per decade, narrowing the gap between day and night.
A good time to visit Banda
September is a good time to visit Banda, with days averaging 34.6°C and nights around 21.4°C (mean 28°C, warmer than Banda's yearly average) and higher rainfall. November and February are marginally more temperate, but September still suits most travellers.
| Year | High | Low | Avg | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|
| 2025 | 33.4°C | 22.0°C | 27.7°C | 181 mm | 86% | 1.8 m/s | 4.6 |
| 2024 | 33.4°C | 23.6°C | 28.5°C | 166 mm | 86% | 2.1 m/s | 4.3 |
| 2023 | 35.5°C | 23.6°C | 29.5°C | 162 mm | 82% | 1.6 m/s | 4.7 |
| 2022 | 33.9°C | 22.4°C | 28.2°C | 169 mm | 83% | 1.9 m/s | 4.4 |
| 2021 | 33.4°C | 23.6°C | 28.5°C | 148 mm | 85% | 2.2 m/s | 4.6 |
| 2020 | 35.0°C | 21.2°C | 28.1°C | 116 mm | 81% | 1.7 m/s | 4.6 |
| 2019 | 34.0°C | 23.2°C | 28.6°C | 324 mm | 89% | 1.9 m/s | 3.8 |
| 2018 | 32.7°C | 20.3°C | 26.5°C | 147 mm | 85% | 2.3 m/s | 4.7 |
| 2017 | 35.6°C | 21.3°C | 28.5°C | 69 mm | 76% | 1.6 m/s | 5 |
| 2016 | 33.1°C | 23.5°C | 28.3°C | 130 mm | 85% | 1.7 m/s | 4.7 |
| 2015 | 39.4°C | 22.0°C | 30.7°C | 62 mm | 61% | 2.4 m/s | 5.6 |
| 2014 | 37.3°C | 22.1°C | 29.7°C | 130 mm | 71% | 2.3 m/s | 5.1 |
| 2013 | 33.5°C | 23.3°C | 28.4°C | 69 mm | 81% | 1.7 m/s | 5.2 |
| 2012 | 34.2°C | 19.4°C | 26.8°C | 241 mm | 84% | 2 m/s | 4.5 |
| 2011 | 33.5°C | 21.5°C | 27.5°C | 167 mm | 85% | 2 m/s | 4.8 |
| 2010 | 33.7°C | 19.6°C | 26.7°C | 122 mm | 82% | 1.8 m/s | 4.8 |
| 2009 | 35.7°C | 21.0°C | 28.3°C | 188 mm | 80% | 2 m/s | 4.9 |
| 2008 | 34.0°C | 20.7°C | 27.4°C | 113 mm | 85% | 1.9 m/s | 5.4 |
| 2007 | 34.5°C | 22.1°C | 28.3°C | 115 mm | 80% | 1.8 m/s | 4.8 |
| 2006 | 37.8°C | 22.6°C | 30.2°C | 38 mm | 66% | 1.8 m/s | 5.4 |
| 2005 | 34.2°C | 21.1°C | 27.6°C | 139 mm | 85% | 2.4 m/s | 4.7 |
| 2004 | 38.4°C | 21.9°C | 30.1°C | 132 mm | 74% | 1.7 m/s | 5.2 |
| 2003 🌧️ | 31.9°C | 23.5°C | 27.7°C | 433 mm | 90% | 1.9 m/s | 3.5 |
| 2002 | 33.0°C | 19.8°C | 26.4°C | 219 mm | 81% | 1.8 m/s | 4.8 |
| 2001 | 34.9°C | 19.7°C | 27.3°C | 49 mm | 77% | 1.8 m/s | 5.6 |
| 2000 | 35.9°C | 20.6°C | 28.2°C | 91 mm | 79% | 1.6 m/s | 4.9 |
| 1999 | 32.8°C | 22.3°C | 27.6°C | 150 mm | 86% | 1.7 m/s | 4.2 |
| 1998 | 33.5°C | 23.8°C | 28.6°C | 137 mm | 84% | 2 m/s | 5.1 |
| 1997 | 33.7°C | 19.8°C | 26.8°C | 205 mm | 81% | 2.1 m/s | 4.9 |
| 1996 | 33.9°C | 21.4°C | 27.6°C | 122 mm | 81% | 1.5 m/s | 5.1 |
| 1995 | 34.4°C | 20.1°C | 27.3°C | 134 mm | 81% | 2.2 m/s | 5.1 |
| 1994 ❄️ | 33.1°C | 16.8°C | 25.0°C | 75 mm | 79% | 2.2 m/s | 5.2 |
| 1993 | 33.2°C | 22.5°C | 27.8°C | 329 mm | 85% | 2.3 m/s | 3.7 |
| 1992 | 34.1°C | 19.1°C | 26.6°C | 215 mm | 80% | 1.9 m/s | 4.7 |
| 1991 | 33.6°C | 19.5°C | 26.5°C | 155 mm | 81% | 1.8 m/s | 4.7 |
| 1990 | 33.2°C | 22.7°C | 28.0°C | 203 mm | 87% | 2.3 m/s | 4.4 |
| 1989 🔥 | 37.9°C | 23.5°C | 30.7°C | 122 mm | 73% | 1.8 m/s | 4.8 |
| 1988 | 36.0°C | 21.9°C | 29.0°C | 28 mm | 75% | 2.2 m/s | 5.4 |
| 1987 | 37.8°C | 19.4°C | 28.6°C | 254 mm | 78% | 2.2 m/s | 4.5 |
| 1986 | 38.6°C | 20.8°C | 29.7°C | 56 mm | 65% | 2.4 m/s | 5.3 |
| 1985 | 36.3°C | 21.4°C | 28.8°C | 263 mm | 81% | 2.2 m/s | 4.9 |
| 1984 | 32.9°C | 19.1°C | 26.0°C | 174 mm | 81% | 2 m/s | 5.3 |
| 1983 | 34.5°C | 24.1°C | 29.3°C | 195 mm | 84% | 2 m/s | — |
| 1982 | 33.3°C | 16.9°C | 25.1°C | 176 mm | 84% | 2.1 m/s | — |
| 1981 | 34.3°C | 22.8°C | 28.6°C | 141 mm | 84% | 2.1 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 34.6°C with lows near 21.4°C (mean 28°C), based on 45 years of NASA POWER data.
September averages 157 mm of rainfall in Banda, a relatively wet time of year. The wettest on record was 433 mm in 2003.
The hottest September reached 39.4°C in 2015. The coldest dipped to 16.8°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 34.3°C to 33.9°C and overnight lows from 20.9°C to 23°C over the same span.
September is one of the warmer months of the year in Banda and a relatively wet time of year, so plan for around 34.6°C daytime highs and 21.4°C at night.
Not quite — September is the 7th coolest month in Banda, averaging 28°C.
For September in Banda, pack light, breathable clothing and sun protection, with typical highs of 34.6°C and lows of 21.4°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 81% — quite humid.
Average wind speed in September is 2 m/s. The windiest September on record averaged 2.4 m/s (1986).
The wettest September on record was 2003 with 433 mm. On average, September sees 157 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 Banda 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.
