September is one of the cooler months of the year in Koppal, with average highs near 30.7°C and lows around 21.3°C (mean 26°C). It is a relatively wet time of year, averaging 113 mm of rainfall and 77% relative humidity across the period.
September is one of the cooler months of the year in Koppal. Across 45 years of records, the warmest Septembers in Koppal were 2002 and 2003 — when the month averaged 27.6°C — while the coldest were 1988 and 1996 at 24.7°C. Typical September days reach 30.7°C with nights near 21.3°C. The long-term September temperature trend is broadly flat.
September is a relatively wet time of year in Koppal, averaging 113 mm of rainfall. The wettest September on record was 2007 with 248 mm, while the driest was 2011 at 27 mm.
Relative humidity in Koppal during September averages 77%. The most humid September was 2020 at 85%, and the least humid was 2002 at 66%.
September receives about 5.1 kWh/m²/day of solar energy in Koppal. The sunniest Septembers were 1993 and 2002 at 5.8 kWh/m²/day, and the cloudiest was 2016 at 4.2.
Average wind speed in Koppal during September is 3.2 m/s. The windiest Septembers were 1983 and 2011 at 4 m/s, while the calmest was 2017 at 2.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 25.8°C | 26.1°C | 26.2°C | 26.0°C | 25.5°C | -0.3°C |
| Avg High | 30.6°C | 31.2°C | 31.0°C | 30.7°C | 29.7°C | -0.9°C |
| Avg Low | 21.0°C | 21.1°C | 21.5°C | 21.4°C | 21.4°C | +0.4°C |
| Avg Rain | 128 mm | 85 mm | 117 mm | 104 mm | 145 mm | +17 mm |
September temperatures in Koppal have stayed relatively stable across the record.
September has ranged from a record low of 17.6°C (1994) to a record high of 36.8°C (1985).
Rainfall in September is a relatively wet time of year, averaging 113 mm, with a wettest year of 248 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.2°C per decade while lows rose 0.1°C per decade, narrowing the gap between day and night.
A good time to visit Koppal
September is a good time to visit Koppal, with days averaging 30.7°C and nights around 21.3°C (mean 26°C, close to Koppal's yearly average) and higher rainfall. December and January 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 | 28.8°C | 24.9°C | 21.1°C | 31.0°C | 19.9°C | 140 mm | 84% | 3.2 m/s | 4.3 |
| 2024 | 30.4°C | 26.1°C | 21.7°C | 32.7°C | 20.2°C | 111 mm | 80% | 3.5 m/s | 4.9 |
| 2023 | 31.2°C | 26.4°C | 21.7°C | 33.4°C | 20.6°C | 91 mm | 78% | 3.7 m/s | 4.8 |
| 2022 | 28.8°C | 24.9°C | 21.1°C | 31.3°C | 18.8°C | 212 mm | 84% | 2.9 m/s | 4.8 |
| 2021 | 30.3°C | 25.9°C | 21.5°C | 33.4°C | 20.0°C | 81 mm | 79% | 3.7 m/s | 4.6 |
| 2020 | 28.5°C | 25.0°C | 21.4°C | 31.6°C | 19.9°C | 233 mm | 85% | 3.1 m/s | 4.5 |
| 2019 | 30.0°C | 25.8°C | 21.7°C | 32.4°C | 20.5°C | 135 mm | 81% | 3.6 m/s | 4.4 |
| 2018 | 32.8°C | 26.9°C | 21.1°C | 36.3°C | 19.6°C | 78 mm | 68% | 2.8 m/s | 5.5 |
| 2017 | 30.3°C | 26.1°C | 21.8°C | 33.9°C | 20.6°C | 165 mm | 79% | 2.3 m/s | 4.9 |
| 2016 | 30.0°C | 25.5°C | 20.9°C | 33.5°C | 19.7°C | 106 mm | 77% | 3.7 m/s | 4.2 |
| 2015 | 30.0°C | 25.7°C | 21.3°C | 32.6°C | 19.7°C | 112 mm | 80% | 2.6 m/s | 5.4 |
| 2014 | 29.9°C | 25.6°C | 21.3°C | 32.2°C | 19.9°C | 67 mm | 80% | 3.4 m/s | 5.1 |
| 2013 | 29.7°C | 25.5°C | 21.3°C | 32.4°C | 19.6°C | 164 mm | 81% | 3 m/s | 5 |
| 2012 | 32.4°C | 27.0°C | 21.6°C | 35.1°C | 20.2°C | 85 mm | 71% | 3.7 m/s | 5.3 |
| 2011 | 32.1°C | 26.7°C | 21.3°C | 35.1°C | 19.2°C | 27 mm | 72% | 4 m/s | 5.3 |
| 2010 | 29.4°C | 25.3°C | 21.3°C | 30.8°C | 19.4°C | 105 mm | 82% | 3.1 m/s | 5 |
| 2009 | 30.2°C | 26.0°C | 21.8°C | 33.1°C | 20.9°C | 200 mm | 79% | 2.8 m/s | 4.9 |
| 2008 | 30.1°C | 25.6°C | 21.1°C | 32.7°C | 19.0°C | 91 mm | 78% | 3.1 m/s | 5.2 |
| 2007 🌧️ | 28.7°C | 25.0°C | 21.3°C | 31.4°C | 19.9°C | 248 mm | 84% | 3.1 m/s | 4.6 |
| 2006 | 31.4°C | 26.6°C | 21.7°C | 34.6°C | 20.7°C | 99 mm | 75% | 3.1 m/s | 5.4 |
| 2005 | 28.7°C | 25.1°C | 21.5°C | 30.3°C | 20.6°C | 106 mm | 84% | 3.2 m/s | 4.7 |
| 2004 | 30.3°C | 25.7°C | 21.2°C | 33.3°C | 19.2°C | 134 mm | 77% | 2.8 m/s | 5.2 |
| 2003 | 33.5°C | 27.6°C | 21.7°C | 35.7°C | 20.8°C | 34 mm | 68% | 3.9 m/s | 5.3 |
| 2002 🔥 | 33.7°C | 27.6°C | 21.5°C | 35.8°C | 19.7°C | 41 mm | 66% | 3.4 m/s | 5.8 |
| 2001 | 31.7°C | 26.7°C | 21.7°C | 34.7°C | 20.6°C | 114 mm | 74% | 2.5 m/s | 5.5 |
| 2000 | 31.4°C | 26.3°C | 21.3°C | 34.0°C | 20.0°C | 99 mm | 75% | 2.8 m/s | 5.4 |
| 1999 | 32.2°C | 26.7°C | 21.3°C | 36.7°C | 20.1°C | 92 mm | 71% | 3.6 m/s | 5.3 |
| 1998 | 29.2°C | 25.4°C | 21.5°C | 31.2°C | 20.2°C | 153 mm | 83% | 3.1 m/s | 5 |
| 1997 | 32.6°C | 26.9°C | 21.3°C | 34.7°C | 19.8°C | 51 mm | 70% | 3 m/s | 5.3 |
| 1996 | 28.5°C | 24.7°C | 20.9°C | 30.4°C | 19.7°C | 188 mm | 83% | 2.7 m/s | 5.2 |
| 1995 | 31.0°C | 26.2°C | 21.4°C | 33.5°C | 20.0°C | 71 mm | 75% | 3.4 m/s | 5.1 |
| 1994 | 31.8°C | 25.9°C | 20.1°C | 34.9°C | 17.6°C | 35 mm | 70% | 3.8 m/s | 5.6 |
| 1993 | 30.3°C | 25.5°C | 20.8°C | 33.3°C | 19.5°C | 87 mm | 77% | 3.6 m/s | 5.8 |
| 1992 | 31.8°C | 26.5°C | 21.2°C | 34.7°C | 19.9°C | 55 mm | 70% | 3.3 m/s | 5.2 |
| 1991 | 31.4°C | 26.2°C | 21.0°C | 34.3°C | 19.9°C | 89 mm | 73% | 2.6 m/s | 5.1 |
| 1990 | 32.9°C | 27.1°C | 21.2°C | 35.9°C | 20.0°C | 33 mm | 67% | 3.8 m/s | 5.2 |
| 1989 | 30.1°C | 25.4°C | 20.8°C | 33.7°C | 17.9°C | 150 mm | 76% | 2.9 m/s | 4.9 |
| 1988 ❄️ | 28.4°C | 24.7°C | 21.1°C | 31.3°C | 19.8°C | 179 mm | 84% | 3.2 m/s | 4.9 |
| 1987 | 31.4°C | 26.6°C | 21.7°C | 34.1°C | 19.4°C | 119 mm | 75% | 2.7 m/s | 5.7 |
| 1986 | 31.1°C | 26.0°C | 20.9°C | 34.3°C | 19.0°C | 124 mm | 74% | 2.7 m/s | 5.6 |
| 1985 | 32.7°C | 26.8°C | 21.0°C | 36.8°C | 19.1°C | 31 mm | 67% | 3.3 m/s | 5.1 |
| 1984 | 31.5°C | 26.1°C | 20.7°C | 34.3°C | 19.6°C | 116 mm | 72% | 3.1 m/s | 5.6 |
| 1983 | 30.0°C | 25.5°C | 21.0°C | 32.7°C | 19.7°C | 90 mm | 79% | 4 m/s | — |
| 1982 | 31.1°C | 25.9°C | 20.7°C | 35.1°C | 18.4°C | 118 mm | 72% | 3.4 m/s | — |
| 1981 | 28.8°C | 24.9°C | 20.9°C | 32.2°C | 19.7°C | 228 mm | 83% | 3 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 30.7°C with lows near 21.3°C (mean 26°C), based on 45 years of NASA POWER data.
September averages 113 mm of rainfall in Koppal, a relatively wet time of year. The wettest on record was 248 mm in 2007.
The hottest September reached 36.8°C in 1985. The coldest dipped to 17.6°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 20.9°C to 21.4°C while daytime highs eased from 30.8°C to 29.9°C, narrowing the gap between day and night.
September is one of the cooler months of the year in Koppal and a relatively wet time of year, so plan for around 30.7°C daytime highs and 21.3°C at night.
Not quite — September is the 5th coolest month in Koppal, averaging 26°C.
For September in Koppal, pack light, breathable clothing and sun protection, with typical highs of 30.7°C and lows of 21.3°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 77% — quite humid.
Average wind speed in September is 3.2 m/s. The windiest September on record averaged 4 m/s (1983).
The wettest September on record was 2007 with 248 mm. On average, September sees 113 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 Koppal 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.
