September is one of the warmer months of the year in Mandi, with average highs near 26.5°C and lows around 18.5°C (mean 22.5°C). It is a relatively wet time of year, averaging 143 mm of rainfall and 71% relative humidity across the period.
September is one of the warmer months of the year in Mandi. Across 45 years of records, the warmest September in Mandi was 1987 — when the month averaged 25.3°C — while the coldest was 1984 at 20.9°C. Typical September days reach 26.5°C with nights near 18.5°C. The long-term September temperature trend is broadly flat.
September is a relatively wet time of year in Mandi, averaging 143 mm of rainfall. The wettest September on record was 2010 with 338 mm, while the driest was 1987 at 5 mm.
Relative humidity in Mandi during September averages 71%. The most humid September was 2025 at 88%, and the least humid was 1982 at 42%.
September receives about 5.1 kWh/m²/day of solar energy in Mandi. The sunniest September was 2001 at 6 kWh/m²/day, and the cloudiest were 1990, 1998 and 2021 at 4.4.
Average wind speed in Mandi during September is 1.4 m/s. The windiest Septembers were 1982, 1986 and 1987 at 1.7 m/s, while the calmest were 2003, 2005 and 2011, among others at 1.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 23.2°C | 22.2°C | 22.3°C | 22.2°C | 22.8°C | -0.4°C |
| Avg High | 28.3°C | 26.2°C | 26.6°C | 25.5°C | 25.9°C | -2.4°C |
| Avg Low | 18.2°C | 18.3°C | 18.0°C | 18.9°C | 19.6°C | +1.4°C |
| Avg Rain | 96 mm | 137 mm | 132 mm | 186 mm | 172 mm | +76 mm |
September temperatures in Mandi have stayed relatively stable across the record.
September has ranged from a record low of 12.8°C (1997) to a record high of 32.8°C (1987).
Rainfall in September is a relatively wet time of year, averaging 143 mm, with a wettest year of 338 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.6°C per decade while lows rose 0.3°C per decade, narrowing the gap between day and night.
One of the best times to visit Mandi
September is one of the best times to visit Mandi. Expect days averaging 26.5°C and nights around 18.5°C (mean 22.5°C) — warmer than Mandi's yearly average — with higher rainfall (143 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 25.5°C | 22.8°C | 20.0°C | 27.9°C | 18.7°C | 310 mm | 88% | 1.6 m/s | 4.6 |
| 2024 | 26.3°C | 23.2°C | 20.1°C | 28.4°C | 17.4°C | 190 mm | 85% | 1.3 m/s | 4.9 |
| 2023 | 26.1°C | 22.8°C | 19.4°C | 27.7°C | 17.3°C | 70 mm | 81% | 1.3 m/s | 5.1 |
| 2022 | 25.2°C | 22.2°C | 19.1°C | 26.7°C | 17.1°C | 200 mm | 86% | 1.3 m/s | 4.8 |
| 2021 | 25.5°C | 22.5°C | 19.5°C | 26.9°C | 18.1°C | 238 mm | 86% | 1.3 m/s | 4.4 |
| 2020 | 26.9°C | 23.2°C | 19.4°C | 28.1°C | 15.9°C | 23 mm | 75% | 1.4 m/s | 5.7 |
| 2019 | 26.0°C | 22.7°C | 19.5°C | 27.6°C | 16.8°C | 110 mm | 82% | 1.4 m/s | 4.8 |
| 2018 | 24.6°C | 21.6°C | 18.6°C | 26.8°C | 16.0°C | 304 mm | 81% | 1.3 m/s | 4.7 |
| 2017 | 26.2°C | 22.5°C | 18.7°C | 28.3°C | 17.7°C | 116 mm | 74% | 1.5 m/s | 5.5 |
| 2016 | 26.2°C | 22.7°C | 19.2°C | 27.5°C | 16.8°C | 51 mm | 77% | 1.4 m/s | 5.4 |
| 2015 | 26.4°C | 22.4°C | 18.4°C | 28.8°C | 15.3°C | 89 mm | 66% | 1.5 m/s | 5.7 |
| 2014 | 25.0°C | 22.0°C | 19.0°C | 26.6°C | 16.8°C | 336 mm | 83% | 1.3 m/s | 5 |
| 2013 | 25.1°C | 21.9°C | 18.7°C | 26.5°C | 17.0°C | 78 mm | 80% | 1.3 m/s | 5.4 |
| 2012 | 25.7°C | 22.6°C | 19.5°C | 27.5°C | 17.0°C | 196 mm | 79% | 1.5 m/s | 5.1 |
| 2011 | 25.1°C | 21.9°C | 18.7°C | 27.1°C | 16.5°C | 247 mm | 81% | 1.2 m/s | 5 |
| 2010 🌧️ | 24.7°C | 21.5°C | 18.4°C | 26.9°C | 15.6°C | 338 mm | 82% | 1.3 m/s | 4.9 |
| 2009 | 26.5°C | 22.4°C | 18.3°C | 28.2°C | 16.0°C | 162 mm | 68% | 1.3 m/s | 5.3 |
| 2008 | 24.9°C | 21.1°C | 17.2°C | 27.2°C | 13.9°C | 233 mm | 77% | 1.3 m/s | 5.6 |
| 2007 | 26.5°C | 22.6°C | 18.6°C | 27.9°C | 15.5°C | 69 mm | 71% | 1.3 m/s | 5.1 |
| 2006 | 25.9°C | 21.9°C | 17.9°C | 27.6°C | 14.6°C | 144 mm | 76% | 1.4 m/s | 5.3 |
| 2005 | 26.8°C | 23.0°C | 19.2°C | 30.9°C | 15.5°C | 209 mm | 71% | 1.2 m/s | 4.6 |
| 2004 | 27.3°C | 22.9°C | 18.4°C | 28.8°C | 16.3°C | 20 mm | 61% | 1.4 m/s | 5.6 |
| 2003 | 25.8°C | 22.3°C | 18.8°C | 27.1°C | 14.6°C | 151 mm | 75% | 1.2 m/s | 5 |
| 2002 | 25.9°C | 21.5°C | 17.1°C | 27.6°C | 14.6°C | 197 mm | 67% | 1.4 m/s | 5.3 |
| 2001 | 28.1°C | 22.6°C | 17.2°C | 30.3°C | 15.0°C | 44 mm | 56% | 1.4 m/s | 6 |
| 2000 | 27.9°C | 22.8°C | 17.7°C | 29.8°C | 14.6°C | 95 mm | 58% | 1.4 m/s | 5.5 |
| 1999 | 29.3°C | 24.4°C | 19.6°C | 31.2°C | 17.7°C | 110 mm | 58% | 1.4 m/s | 5 |
| 1998 | 27.6°C | 23.6°C | 19.5°C | 29.3°C | 17.7°C | 98 mm | 67% | 1.2 m/s | 4.4 |
| 1997 | 26.2°C | 21.9°C | 17.6°C | 27.5°C | 12.8°C | 33 mm | 69% | 1.4 m/s | 5 |
| 1996 | 25.5°C | 21.8°C | 18.2°C | 26.7°C | 16.0°C | 155 mm | 75% | 1.3 m/s | 4.8 |
| 1995 | 25.3°C | 21.5°C | 17.7°C | 27.8°C | 15.7°C | 133 mm | 75% | 1.4 m/s | 5.2 |
| 1994 | 25.0°C | 21.4°C | 17.8°C | 27.2°C | 14.3°C | 80 mm | 70% | 1.3 m/s | 5.1 |
| 1993 | 25.8°C | 21.8°C | 17.9°C | 27.5°C | 15.8°C | 203 mm | 70% | 1.3 m/s | 4.9 |
| 1992 | 25.5°C | 21.5°C | 17.6°C | 28.2°C | 14.9°C | 134 mm | 72% | 1.4 m/s | 5.1 |
| 1991 | 26.2°C | 22.1°C | 18.0°C | 28.4°C | 14.6°C | 143 mm | 68% | 1.4 m/s | 5.2 |
| 1990 | 25.9°C | 22.4°C | 18.9°C | 28.5°C | 16.2°C | 284 mm | 79% | 1.3 m/s | 4.4 |
| 1989 | 29.1°C | 23.7°C | 18.3°C | 30.5°C | 15.8°C | 75 mm | 55% | 1.5 m/s | 5.3 |
| 1988 | 28.5°C | 23.7°C | 18.8°C | 32.0°C | 15.6°C | 286 mm | 63% | 1.6 m/s | 4.6 |
| 1987 🔥 | 31.6°C | 25.3°C | 19.1°C | 32.8°C | 14.9°C | 5 mm | 43% | 1.7 m/s | 5.5 |
| 1986 | 29.5°C | 23.6°C | 17.8°C | 31.6°C | 14.9°C | 60 mm | 48% | 1.7 m/s | 5.1 |
| 1985 | 26.3°C | 22.2°C | 18.1°C | 27.7°C | 15.4°C | 45 mm | 68% | 1.3 m/s | 5.1 |
| 1984 ❄️ | 24.6°C | 20.9°C | 17.1°C | 26.9°C | 13.6°C | 143 mm | 75% | 1.3 m/s | 5.4 |
| 1983 | 28.5°C | 23.9°C | 19.3°C | 30.5°C | 17.7°C | 117 mm | 63% | 1.5 m/s | — |
| 1982 | 30.1°C | 23.8°C | 17.5°C | 32.4°C | 14.1°C | 9 mm | 42% | 1.7 m/s | — |
| 1981 | 26.5°C | 22.1°C | 17.7°C | 28.0°C | 14.8°C | 126 mm | 68% | 1.4 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 26.5°C with lows near 18.5°C (mean 22.5°C), based on 45 years of NASA POWER data.
September averages 143 mm of rainfall in Mandi, a relatively wet time of year. The wettest on record was 338 mm in 2010.
The hottest September reached 32.8°C in 1987. The coldest dipped to 12.8°C in 1997.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 0.1°C — but days and nights have moved in opposite directions. Overnight lows rose from 17.9°C to 19.6°C while daytime highs eased from 27.2°C to 25.7°C, narrowing the gap between day and night.
September is one of the warmer months of the year in Mandi and a relatively wet time of year, so plan for around 26.5°C daytime highs and 18.5°C at night.
Not quite — September is the 8th coolest month in Mandi, averaging 22.5°C.
For September in Mandi, pack light layers you can adjust through the day, with typical highs of 26.5°C and lows of 18.5°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 71% — moderately humid.
Average wind speed in September is 1.4 m/s. The windiest September on record averaged 1.7 m/s (1982).
The wettest September on record was 2010 with 338 mm. On average, September sees 143 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 Mandi 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.
