September is one of the warmer months of the year in Nainital, with average highs near 29.2°C and lows around 16.6°C (mean 22.9°C). It is a relatively wet time of year, averaging 172 mm of rainfall and 80% relative humidity across the period.
September is one of the warmer months of the year in Nainital. Across 45 years of records, the warmest September in Nainital was 2024 — when the month averaged 24.8°C — while the coldest was 1984 at 20.5°C. Typical September days reach 29.2°C with nights near 16.6°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 | 23.0°C | 22.6°C | 22.4°C | 23.0°C | 24.0°C | +1°C |
| Avg High | 29.8°C | 29.1°C | 28.6°C | 28.7°C | 29.9°C | +0.1°C |
| Avg Low | 16.1°C | 16.2°C | 16.1°C | 17.3°C | 18.2°C | +2.1°C |
| Avg Rain | 130 mm | 145 mm | 193 mm | 201 mm | 194 mm | +64 mm |
September temperatures in Nainital have risen by about 2°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 13.9°C (1984) to a record high of 32.8°C (1987).
Rainfall in September is a relatively wet time of year, averaging 172 mm, with a wettest year of 558 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.1°C per decade while lows rose 0.6°C per decade, narrowing the gap between day and night.
One of the best times to visit Nainital
September is one of the best times to visit Nainital. Expect days averaging 29.2°C and nights around 16.6°C (mean 22.9°C) — warmer than Nainital's yearly average — with higher rainfall (172 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | High | Low | Avg | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|
| 2025 | 29.4°C | 19.0°C | 24.2°C | 211 mm | 88% | 1.3 m/s | 4.3 |
| 2024 🔥 | 30.5°C | 19.1°C | 24.8°C | 294 mm | 87% | 1.2 m/s | 4.2 |
| 2023 | 29.5°C | 17.7°C | 23.6°C | 197 mm | 85% | 1.1 m/s | 4.7 |
| 2022 | 31.0°C | 17.7°C | 24.4°C | 318 mm | 81% | 1.3 m/s | 4.3 |
| 2021 | 28.7°C | 18.5°C | 23.6°C | 126 mm | 84% | 1.1 m/s | 4.7 |
| 2020 | 30.5°C | 16.9°C | 23.7°C | 20 mm | 78% | 1.2 m/s | 5.1 |
| 2019 | 28.6°C | 16.9°C | 22.7°C | 129 mm | 87% | 1.2 m/s | 4.2 |
| 2018 | 28.3°C | 17.1°C | 22.7°C | 147 mm | 86% | 1.3 m/s | 4.7 |
| 2017 | 30.2°C | 18.3°C | 24.2°C | 249 mm | 82% | 1.3 m/s | 4.9 |
| 2016 | 28.8°C | 18.5°C | 23.7°C | 90 mm | 81% | 1.3 m/s | 5.2 |
| 2015 | 29.6°C | 16.3°C | 22.9°C | 78 mm | 75% | 1.4 m/s | 5.5 |
| 2014 | 29.5°C | 17.5°C | 23.5°C | 111 mm | 80% | 1.5 m/s | 5.3 |
| 2013 | 28.3°C | 18.1°C | 23.2°C | 126 mm | 85% | 1.2 m/s | 5 |
| 2012 | 28.2°C | 17.4°C | 22.8°C | 251 mm | 86% | 1.4 m/s | 4.8 |
| 2011 | 28.2°C | 16.8°C | 22.5°C | 273 mm | 86% | 1.2 m/s | 5 |
| 2010 🌧️ | 27.6°C | 15.7°C | 21.7°C | 558 mm | 87% | 1.2 m/s | 4.1 |
| 2009 | 28.0°C | 17.0°C | 22.5°C | 227 mm | 84% | 1.2 m/s | 4.7 |
| 2008 | 28.3°C | 16.3°C | 22.3°C | 243 mm | 83% | 1.2 m/s | 5 |
| 2007 | 28.2°C | 16.8°C | 22.5°C | 208 mm | 84% | 1.2 m/s | 5 |
| 2006 | 28.6°C | 16.2°C | 22.4°C | 119 mm | 79% | 1.4 m/s | 5.3 |
| 2005 | 28.8°C | 17.1°C | 23.0°C | 382 mm | 84% | 1.2 m/s | 4.4 |
| 2004 | 29.0°C | 16.5°C | 22.8°C | 58 mm | 75% | 1.3 m/s | 5 |
| 2003 | 28.8°C | 15.8°C | 22.3°C | 325 mm | 85% | 1.1 m/s | 4.1 |
| 2002 | 28.9°C | 14.9°C | 21.9°C | 236 mm | 78% | 1.2 m/s | 4.3 |
| 2001 | 29.4°C | 15.1°C | 22.3°C | 47 mm | 71% | 1.3 m/s | 5.6 |
| 2000 | 28.4°C | 15.0°C | 21.7°C | 80 mm | 76% | 1.2 m/s | 4.8 |
| 1999 | 29.8°C | 17.8°C | 23.8°C | 182 mm | 81% | 1.1 m/s | 4.1 |
| 1998 | 29.0°C | 17.8°C | 23.4°C | 130 mm | 84% | 1.1 m/s | 4.8 |
| 1997 | 29.4°C | 14.0°C | 21.7°C | 50 mm | 74% | 1.3 m/s | 4.6 |
| 1996 | 27.8°C | 16.2°C | 22.0°C | 234 mm | 85% | 1.2 m/s | 4.6 |
| 1995 | 30.8°C | 16.4°C | 23.6°C | 159 mm | 82% | 1.3 m/s | 4.8 |
| 1994 | 28.9°C | 14.4°C | 21.7°C | 29 mm | 79% | 1.2 m/s | 5.2 |
| 1993 | 28.4°C | 17.1°C | 22.8°C | 189 mm | 83% | 1.3 m/s | 4.3 |
| 1992 | 30.0°C | 15.9°C | 22.9°C | 101 mm | 74% | 1.2 m/s | 4.6 |
| 1991 | 28.4°C | 14.8°C | 21.6°C | 121 mm | 80% | 1.3 m/s | 4.9 |
| 1990 | 28.5°C | 17.1°C | 22.8°C | 254 mm | 86% | 1.2 m/s | 3.9 |
| 1989 | 31.6°C | 17.6°C | 24.6°C | 89 mm | 70% | 1.3 m/s | 4.6 |
| 1988 | 29.2°C | 17.9°C | 23.6°C | 134 mm | 82% | 1.2 m/s | 4.6 |
| 1987 | 32.8°C | 16.3°C | 24.5°C | 59 mm | 57% | 1.4 m/s | 5.1 |
| 1986 | 31.7°C | 15.9°C | 23.8°C | 104 mm | 59% | 1.3 m/s | 5 |
| 1985 | 29.0°C | 16.2°C | 22.6°C | 234 mm | 82% | 1.2 m/s | 4.2 |
| 1984 ❄️ | 27.1°C | 13.9°C | 20.5°C | 153 mm | 81% | 1.3 m/s | 5.1 |
| 1983 | 27.7°C | 16.9°C | 22.3°C | 269 mm | 85% | 1.1 m/s | — |
| 1982 | 29.0°C | 14.1°C | 21.6°C | 45 mm | 69% | 1.3 m/s | — |
| 1981 | 30.4°C | 16.5°C | 23.4°C | 84 mm | 74% | 1.2 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 29.2°C with lows near 16.6°C (mean 22.9°C), based on 45 years of NASA POWER data.
September averages 172 mm of rainfall in Nainital, a relatively wet time of year. The wettest on record was 558 mm in 2010.
The hottest September reached 32.8°C in 1987. The coldest dipped to 13.9°C in 1984.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 2°C. Daytime highs moved from 28.6°C to 29.8°C and overnight lows from 15.5°C to 18.4°C over the same span.
September is one of the warmer months of the year in Nainital and a relatively wet time of year, so plan for around 29.2°C daytime highs and 16.6°C at night.
Not quite — September is the 7th coolest month in Nainital, averaging 22.9°C.
For September in Nainital, pack light layers you can adjust through the day, with typical highs of 29.2°C and lows of 16.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 80% — quite humid.
Average wind speed in September is 1.2 m/s. The windiest September on record averaged 1.5 m/s (2014).
The wettest September on record was 2010 with 558 mm. On average, September sees 172 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 Nainital 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.
