September is one of the cooler months of the year in Dang, with average highs near 29.5°C and lows around 22.5°C (mean 26°C). It is a relatively wet time of year, averaging 197 mm of rainfall and 86% relative humidity across the period.
September is one of the cooler months of the year in Dang. Across 45 years of records, the warmest September in Dang was 1987 — when the month averaged 28.3°C — while the coldest was 1994 at 24.5°C. Typical September days reach 29.5°C with nights near 22.5°C. The long-term September temperature trend is broadly flat.
September is a relatively wet time of year in Dang, averaging 197 mm of rainfall. The wettest September on record was 2021 with 500 mm, while the driest was 1987 at 6 mm.
Relative humidity in Dang during September averages 86%. The most humid September was 2019 at 92%, and the least humid was 1986 at 68%.
September receives about 4.4 kWh/m²/day of solar energy in Dang. The sunniest September was 1987 at 5.5 kWh/m²/day, and the cloudiest was 2025 at 3.1.
Average wind speed in Dang during September is 2.5 m/s. The windiest September was 2021 at 3.1 m/s, while the calmest were 2017 and 2020 at 1.7 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 26.6°C | 25.7°C | 26.1°C | 25.7°C | 25.9°C | -0.7°C |
| Avg High | 30.8°C | 29.3°C | 29.5°C | 28.9°C | 28.6°C | -2.2°C |
| Avg Low | 22.4°C | 22.2°C | 22.6°C | 22.4°C | 23.2°C | +0.8°C |
| Avg Rain | 112 mm | 154 mm | 192 mm | 252 mm | 315 mm | +203 mm |
September temperatures in Dang have stayed relatively stable across the record.
September has ranged from a record low of 16.4°C (1994) to a record high of 38.7°C (1986).
Rainfall in September is a relatively wet time of year, averaging 197 mm, with a wettest year of 500 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.5°C per decade while lows rose 0.2°C per decade, narrowing the gap between day and night.
A good time to visit Dang
September is a good time to visit Dang, with days averaging 29.5°C and nights around 22.5°C (mean 26°C, close to Dang's yearly average) and higher rainfall. January and December 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 | 28.3°C | 25.4°C | 22.5°C | 30.2°C | 20.2°C | 276 mm | 90% | 2.5 m/s | 3.1 |
| 2024 | 28.2°C | 25.7°C | 23.1°C | 30.3°C | 21.1°C | 374 mm | 91% | 2.9 m/s | 3.6 |
| 2023 | 29.4°C | 26.4°C | 23.4°C | 31.6°C | 21.9°C | 244 mm | 87% | 2.7 m/s | 3.8 |
| 2022 | 28.7°C | 25.9°C | 23.1°C | 31.8°C | 21.0°C | 285 mm | 90% | 2.3 m/s | 3.8 |
| 2021 🌧️ | 28.2°C | 25.8°C | 23.4°C | 30.0°C | 21.9°C | 500 mm | 92% | 3.1 m/s | 3.2 |
| 2020 | 29.0°C | 26.2°C | 23.4°C | 32.0°C | 20.2°C | 208 mm | 89% | 1.7 m/s | 4.3 |
| 2019 | 28.0°C | 25.8°C | 23.5°C | 30.8°C | 22.2°C | 407 mm | 92% | 2.6 m/s | 3.5 |
| 2018 | 29.6°C | 25.5°C | 21.3°C | 33.0°C | 19.8°C | 60 mm | 83% | 2.4 m/s | 5 |
| 2017 | 29.8°C | 26.2°C | 22.6°C | 31.9°C | 21.4°C | 102 mm | 87% | 1.7 m/s | 4.7 |
| 2016 | 28.6°C | 25.5°C | 22.3°C | 29.8°C | 20.9°C | 222 mm | 89% | 2.5 m/s | 3.8 |
| 2015 | 29.9°C | 25.9°C | 21.8°C | 32.8°C | 18.4°C | 431 mm | 84% | 2.2 m/s | 4.6 |
| 2014 | 28.8°C | 25.5°C | 22.2°C | 31.7°C | 20.0°C | 230 mm | 88% | 2.5 m/s | 4.3 |
| 2013 | 28.5°C | 25.6°C | 22.7°C | 31.2°C | 21.7°C | 201 mm | 89% | 2.7 m/s | 4 |
| 2012 | 28.7°C | 25.6°C | 22.6°C | 32.1°C | 20.4°C | 349 mm | 88% | 3 m/s | 4.1 |
| 2011 | 28.4°C | 25.4°C | 22.4°C | 30.2°C | 20.8°C | 222 mm | 90% | 2.6 m/s | 4.2 |
| 2010 | 29.0°C | 26.0°C | 23.0°C | 31.2°C | 21.1°C | 299 mm | 89% | 2.5 m/s | 4.3 |
| 2009 | 30.1°C | 26.5°C | 22.8°C | 32.6°C | 21.0°C | 119 mm | 86% | 2 m/s | 5 |
| 2008 | 28.6°C | 25.4°C | 22.2°C | 30.8°C | 18.5°C | 391 mm | 90% | 2.2 m/s | 4.3 |
| 2007 | 28.8°C | 25.9°C | 22.9°C | 30.4°C | 21.3°C | 327 mm | 89% | 2 m/s | 4.4 |
| 2006 | 29.1°C | 25.9°C | 22.6°C | 31.1°C | 21.2°C | 177 mm | 89% | 1.9 m/s | 4.5 |
| 2005 | 28.8°C | 25.9°C | 23.1°C | 31.9°C | 19.8°C | 444 mm | 90% | 2.7 m/s | 3.7 |
| 2004 | 29.7°C | 26.2°C | 22.6°C | 31.8°C | 20.9°C | 97 mm | 86% | 1.9 m/s | 4.7 |
| 2003 | 28.3°C | 25.5°C | 22.7°C | 29.8°C | 21.7°C | 209 mm | 89% | 2.8 m/s | 3.9 |
| 2002 | 29.1°C | 25.5°C | 21.8°C | 33.3°C | 20.3°C | 103 mm | 86% | 2.4 m/s | 4.7 |
| 2001 | 30.6°C | 26.5°C | 22.4°C | 35.4°C | 21.4°C | 29 mm | 83% | 1.9 m/s | 4.8 |
| 2000 | 32.0°C | 27.2°C | 22.4°C | 37.0°C | 20.8°C | 21 mm | 76% | 2.5 m/s | 4.8 |
| 1999 | 31.2°C | 27.0°C | 22.9°C | 33.8°C | 21.6°C | 125 mm | 81% | 3 m/s | 4.1 |
| 1998 | 28.5°C | 26.0°C | 23.5°C | 31.8°C | 22.5°C | 294 mm | 91% | 2.8 m/s | 3.8 |
| 1997 | 29.2°C | 25.6°C | 22.0°C | 31.5°C | 19.5°C | 94 mm | 87% | 2.3 m/s | 4.8 |
| 1996 | 28.8°C | 25.4°C | 22.1°C | 31.1°C | 19.2°C | 80 mm | 87% | 2.2 m/s | 4.6 |
| 1995 | 29.4°C | 25.9°C | 22.5°C | 31.4°C | 20.6°C | 170 mm | 86% | 2.4 m/s | 4.9 |
| 1994 ❄️ | 28.0°C | 24.5°C | 20.9°C | 30.5°C | 16.4°C | 151 mm | 86% | 3 m/s | 4.8 |
| 1993 | 29.7°C | 26.2°C | 22.6°C | 31.2°C | 21.5°C | 257 mm | 85% | 3 m/s | 4.4 |
| 1992 | 29.8°C | 25.7°C | 21.6°C | 34.1°C | 19.5°C | 119 mm | 81% | 2.7 m/s | 4.7 |
| 1991 | 29.7°C | 25.6°C | 21.4°C | 32.8°C | 19.3°C | 33 mm | 83% | 2.2 m/s | 4.9 |
| 1990 | 28.2°C | 25.3°C | 22.3°C | 29.3°C | 20.3°C | 214 mm | 89% | 2.8 m/s | 3.9 |
| 1989 | 30.6°C | 26.6°C | 22.5°C | 33.5°C | 21.2°C | 51 mm | 82% | 2.1 m/s | 4.7 |
| 1988 | 29.6°C | 26.6°C | 23.6°C | 31.8°C | 21.5°C | 264 mm | 88% | 2.1 m/s | 4.2 |
| 1987 🔥 | 33.6°C | 28.3°C | 23.1°C | 38.3°C | 20.7°C | 6 mm | 74% | 2.7 m/s | 5.5 |
| 1986 | 34.2°C | 28.0°C | 21.8°C | 38.7°C | 20.2°C | 15 mm | 68% | 2.7 m/s | 5.3 |
| 1985 | 32.5°C | 27.4°C | 22.3°C | 38.2°C | 21.1°C | 14 mm | 74% | 2.8 m/s | 5 |
| 1984 | 29.8°C | 25.6°C | 21.4°C | 32.3°C | 18.2°C | 99 mm | 81% | 2.8 m/s | 5.2 |
| 1983 | 28.8°C | 25.8°C | 22.8°C | 30.2°C | 22.1°C | 269 mm | 89% | 2.3 m/s | — |
| 1982 | 29.1°C | 25.3°C | 21.5°C | 31.1°C | 19.6°C | 65 mm | 86% | 2.2 m/s | — |
| 1981 | 29.1°C | 26.0°C | 23.0°C | 31.4°C | 22.1°C | 224 mm | 87% | 2.2 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 29.5°C with lows near 22.5°C (mean 26°C), based on 45 years of NASA POWER data.
September averages 197 mm of rainfall in Dang, a relatively wet time of year. The wettest on record was 500 mm in 2021.
The hottest September reached 38.7°C in 1986. The coldest dipped to 16.4°C in 1994.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have fallen by about 0.2°C — but days and nights have moved in opposite directions. Overnight lows rose from 22.2°C to 23.1°C while daytime highs eased from 29.9°C to 28.6°C, narrowing the gap between day and night.
September is one of the cooler months of the year in Dang and a relatively wet time of year, so plan for around 29.5°C daytime highs and 22.5°C at night.
Not quite — September is the 6th coolest month in Dang, averaging 26°C.
For September in Dang, pack light layers you can adjust through the day, with typical highs of 29.5°C and lows of 22.5°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 86% — quite humid.
Average wind speed in September is 2.5 m/s. The windiest September on record averaged 3.1 m/s (2021).
The wettest September on record was 2021 with 500 mm. On average, September sees 197 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 Dang 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.
