September is one of the warmer months of the year in Karnal, with average highs near 36.7°C and lows around 19.9°C (mean 28.3°C). It is a relatively wet time of year, averaging 115 mm of rainfall and 67% relative humidity across the period.
September is one of the warmer months of the year in Karnal. Across 45 years of records, the warmest September in Karnal was 1999 — when the month averaged 32.2°C — while the coldest was 1994 at 23.7°C. Typical September days reach 36.7°C with nights near 19.9°C. The long-term trend is cooling, about 0.3°C per decade.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 29.1°C | 28.1°C | 28.7°C | 27.5°C | 27.9°C | -1.2°C |
| Avg High | 38.5°C | 36.4°C | 37.4°C | 35.5°C | 35.0°C | -3.5°C |
| Avg Low | 19.8°C | 19.9°C | 19.9°C | 19.4°C | 20.8°C | +1°C |
| Avg Rain | 74 mm | 116 mm | 104 mm | 134 mm | 160 mm | +86 mm |
September temperatures in Karnal have fallen by about 0.4°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 14.3°C (1994) to a record high of 41.8°C (1987).
Rainfall in September is a relatively wet time of year, averaging 115 mm, with a wettest year of 296 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.7°C per decade while lows rose 0.2°C per decade, narrowing the gap between day and night.
A good time to visit Karnal
September is a good time to visit Karnal, with days averaging 36.7°C and nights around 19.9°C (mean 28.3°C, warmer than Karnal's yearly average) and higher rainfall. March and November are marginally more temperate, but September still suits most travellers.
| Year | High | Low | Avg | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|
| 2025 | 33.8°C | 20.1°C | 26.9°C | 143 mm | 82% | 1.8 m/s | 5 |
| 2024 | 34.6°C | 22.3°C | 28.4°C | 186 mm | 83% | 1.3 m/s | 4.6 |
| 2023 | 36.6°C | 19.1°C | 27.8°C | 73 mm | 75% | 1.6 m/s | 5.4 |
| 2022 🌧️ | 35.8°C | 21.6°C | 28.7°C | 296 mm | 76% | 1.5 m/s | 5 |
| 2021 | 33.0°C | 21.9°C | 27.5°C | 248 mm | 85% | 1.5 m/s | 4.5 |
| 2020 | 36.1°C | 19.7°C | 27.9°C | 17 mm | 69% | 1.4 m/s | 5.5 |
| 2019 | 37.2°C | 21.9°C | 29.5°C | 88 mm | 72% | 1.3 m/s | 4.9 |
| 2018 | 33.3°C | 19.0°C | 26.1°C | 215 mm | 79% | 1.6 m/s | 4.8 |
| 2017 | 37.2°C | 18.1°C | 27.7°C | 142 mm | 63% | 1.5 m/s | 5.2 |
| 2016 | 37.3°C | 21.7°C | 29.5°C | 43 mm | 57% | 1.5 m/s | 5.5 |
| 2015 | 38.3°C | 19.2°C | 28.7°C | 42 mm | 52% | 1.8 m/s | 5.6 |
| 2014 | 37.6°C | 20.3°C | 29.0°C | 104 mm | 62% | 1.9 m/s | 5.3 |
| 2013 | 34.1°C | 20.4°C | 27.3°C | 91 mm | 74% | 1.3 m/s | 5.3 |
| 2012 | 34.3°C | 17.3°C | 25.8°C | 107 mm | 76% | 1.9 m/s | 5.2 |
| 2011 | 33.3°C | 19.2°C | 26.2°C | 235 mm | 84% | 1.6 m/s | 5 |
| 2010 | 32.6°C | 17.3°C | 24.9°C | 272 mm | 84% | 1.5 m/s | 4.6 |
| 2009 | 35.3°C | 20.5°C | 27.9°C | 181 mm | 70% | 1.3 m/s | 5.2 |
| 2008 | 35.2°C | 18.5°C | 26.8°C | 174 mm | 78% | 1.4 m/s | 5.5 |
| 2007 | 37.3°C | 20.8°C | 29.0°C | 72 mm | 63% | 1.3 m/s | 5.2 |
| 2006 | 37.3°C | 20.4°C | 28.9°C | 75 mm | 62% | 1.7 m/s | 5.6 |
| 2005 | 40.4°C | 20.4°C | 30.4°C | 200 mm | 71% | 1.8 m/s | 4.7 |
| 2004 | 39.4°C | 20.7°C | 30.0°C | 16 mm | 55% | 1.5 m/s | 5.6 |
| 2003 | 34.6°C | 19.2°C | 26.9°C | 97 mm | 76% | 1.1 m/s | 5.1 |
| 2002 | 36.6°C | 19.7°C | 28.2°C | 148 mm | 65% | 1.6 m/s | 5.1 |
| 2001 | 38.4°C | 19.2°C | 28.8°C | 37 mm | 50% | 1.5 m/s | 5.9 |
| 2000 | 39.8°C | 19.6°C | 29.7°C | 45 mm | 50% | 1.5 m/s | 5.8 |
| 1999 🔥 | 41.5°C | 22.9°C | 32.2°C | 73 mm | 55% | 1.7 m/s | 5.4 |
| 1998 | 37.6°C | 20.8°C | 29.2°C | 160 mm | 74% | 1.6 m/s | 4.9 |
| 1997 | 37.5°C | 21.3°C | 29.4°C | 41 mm | 61% | 1.3 m/s | 5.7 |
| 1996 | 35.1°C | 19.6°C | 27.3°C | 139 mm | 75% | 1.5 m/s | 5.5 |
| 1995 | 33.7°C | 19.1°C | 26.4°C | 141 mm | 74% | 1.3 m/s | 5.8 |
| 1994 ❄️ | 33.2°C | 14.3°C | 23.7°C | 38 mm | 75% | 1.7 m/s | 5.9 |
| 1993 | 36.8°C | 20.8°C | 28.8°C | 167 mm | 71% | 1.4 m/s | 5.2 |
| 1992 | 37.0°C | 19.3°C | 28.2°C | 81 mm | 62% | 1.7 m/s | 5.5 |
| 1991 | 35.0°C | 19.0°C | 27.0°C | 89 mm | 68% | 1.3 m/s | 6 |
| 1990 | 37.0°C | 21.5°C | 29.2°C | 233 mm | 77% | 1.4 m/s | 5 |
| 1989 | 38.8°C | 21.4°C | 30.1°C | 71 mm | 55% | 1.3 m/s | 5.5 |
| 1988 | 37.2°C | 19.1°C | 28.1°C | 186 mm | 73% | 1.8 m/s | 5.4 |
| 1987 | 41.8°C | 22.3°C | 32.0°C | 22 mm | 39% | 1.6 m/s | 6.1 |
| 1986 | 40.7°C | 20.4°C | 30.5°C | 63 mm | 43% | 1.9 m/s | 5.8 |
| 1985 | 37.6°C | 18.3°C | 27.9°C | 71 mm | 64% | 1.7 m/s | 5.8 |
| 1984 | 34.1°C | 17.5°C | 25.8°C | 103 mm | 75% | 1.5 m/s | 5.7 |
| 1983 | 38.1°C | 20.5°C | 29.3°C | 71 mm | 66% | 1.4 m/s | — |
| 1982 | 39.1°C | 17.3°C | 28.2°C | 3 mm | 46% | 1.8 m/s | — |
| 1981 | 39.3°C | 21.0°C | 30.2°C | 77 mm | 55% | 1.7 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 36.7°C with lows near 19.9°C (mean 28.3°C), based on 45 years of NASA POWER data.
September averages 115 mm of rainfall in Karnal, a relatively wet time of year. The wettest on record was 296 mm in 2022.
The hottest September reached 41.8°C in 1987. The coldest dipped to 14.3°C in 1994.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have fallen by about 0.4°C. Daytime highs moved from 37.6°C to 34.8°C and overnight lows from 18.9°C to 21°C over the same span.
September is one of the warmer months of the year in Karnal and a relatively wet time of year, so plan for around 36.7°C daytime highs and 19.9°C at night.
Not quite — September is the 7th coolest month in Karnal, averaging 28.3°C.
For September in Karnal, pack light, breathable clothing and sun protection, with typical highs of 36.7°C and lows of 19.9°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 67% — moderately humid.
Average wind speed in September is 1.5 m/s. The windiest September on record averaged 1.9 m/s (1986).
The wettest September on record was 2022 with 296 mm. On average, September sees 115 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 Karnal 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.
