September is one of the warmer months of the year in Diu, with average highs near 30.6°C and lows around 26.2°C (mean 28.4°C). It is a relatively wet time of year, averaging 120 mm of rainfall and 81% relative humidity across the period.
September is one of the warmer months of the year in Diu. Across 45 years of records, the warmest September in Diu was 2001 — when the month averaged 30°C — while the coldest was 1982 at 27.5°C. Typical September days reach 30.6°C with nights near 26.2°C. The long-term September temperature trend is broadly flat.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 28.5°C | 28.3°C | 28.3°C | 28.3°C | 28.3°C | -0.2°C |
| Avg High | 31.2°C | 30.6°C | 30.6°C | 30.3°C | 30.0°C | -1.2°C |
| Avg Low | 25.9°C | 26.1°C | 26.0°C | 26.4°C | 26.6°C | +0.7°C |
| Avg Rain | 74 mm | 81 mm | 100 mm | 159 mm | 221 mm | +147 mm |
September temperatures in Diu have stayed relatively stable across the record.
September has ranged from a record low of 24.7°C (1984) to a record high of 33.8°C (2001).
Rainfall in September is a relatively wet time of year, averaging 120 mm, with a wettest year of 480 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.3°C per decade while lows rose 0.2°C per decade, narrowing the gap between day and night.
A quieter season to visit Diu
If your dates are flexible, the more temperate months of January and February tend to be the most comfortable for visiting Diu. That said, September — with days averaging 30.6°C and nights around 26.2°C (mean 28.4°C) and higher rainfall (120 mm) — can still be rewarding for travellers who don't mind the warmth, and often means fewer crowds.
| Year | High | Low | Avg | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|
| 2025 | 30.4°C | 26.0°C | 28.2°C | 219 mm | 84% | 4.6 m/s | 4.4 |
| 2024 | 29.6°C | 26.6°C | 28.1°C | 180 mm | 83% | 4.8 m/s | 4.8 |
| 2023 | 30.8°C | 26.6°C | 28.7°C | 70 mm | 83% | 4.5 m/s | 5.3 |
| 2022 | 30.3°C | 26.7°C | 28.5°C | 236 mm | 82% | 4.3 m/s | 5.1 |
| 2021 🌧️ | 29.0°C | 26.9°C | 27.9°C | 480 mm | 85% | 5.6 m/s | 4.1 |
| 2020 | 30.1°C | 27.0°C | 28.5°C | 138 mm | 81% | 3.7 m/s | 5 |
| 2019 | 29.4°C | 27.1°C | 28.2°C | 303 mm | 86% | 5.4 m/s | 3.9 |
| 2018 | 31.9°C | 25.5°C | 28.7°C | 16 mm | 81% | 4.5 m/s | 5.7 |
| 2017 | 29.9°C | 26.3°C | 28.1°C | 79 mm | 82% | 3.8 m/s | 5.2 |
| 2016 | 29.2°C | 26.1°C | 27.6°C | 170 mm | 82% | 5 m/s | 5.1 |
| 2015 | 30.8°C | 26.3°C | 28.5°C | 109 mm | 78% | 4.3 m/s | 5.4 |
| 2014 | 30.2°C | 26.7°C | 28.5°C | 112 mm | 81% | 4.4 m/s | 5.2 |
| 2013 | 30.3°C | 26.3°C | 28.3°C | 240 mm | 83% | 5 m/s | 4.9 |
| 2012 | 31.4°C | 26.4°C | 28.9°C | 198 mm | 82% | 5.2 m/s | 4.7 |
| 2011 | 29.2°C | 26.5°C | 27.9°C | 158 mm | 82% | 4.7 m/s | 4.8 |
| 2010 | 30.4°C | 26.3°C | 28.4°C | 202 mm | 82% | 4.5 m/s | 5 |
| 2009 | 31.4°C | 26.6°C | 29.0°C | 40 mm | 81% | 4.4 m/s | 5.9 |
| 2008 | 30.9°C | 26.1°C | 28.5°C | 241 mm | 82% | 4.2 m/s | 5 |
| 2007 | 29.4°C | 25.9°C | 27.6°C | 231 mm | 83% | 4.4 m/s | 5.2 |
| 2006 | 29.5°C | 25.6°C | 27.6°C | 101 mm | 83% | 4.3 m/s | 5.5 |
| 2005 | 30.3°C | 25.9°C | 28.1°C | 235 mm | 86% | 5.4 m/s | 4.4 |
| 2004 | 29.9°C | 26.1°C | 28.0°C | 33 mm | 82% | 4 m/s | 5.6 |
| 2003 | 29.6°C | 26.6°C | 28.1°C | 64 mm | 82% | 4.9 m/s | 5.3 |
| 2002 | 30.8°C | 25.7°C | 28.3°C | 23 mm | 79% | 4.6 m/s | 5.8 |
| 2001 🔥 | 33.8°C | 26.1°C | 30.0°C | 21 mm | 81% | 4 m/s | 5.6 |
| 2000 | 30.4°C | 25.8°C | 28.1°C | 9 mm | 80% | 4.4 m/s | 5.5 |
| 1999 | 31.0°C | 26.6°C | 28.8°C | 50 mm | 80% | 5.4 m/s | 5.7 |
| 1998 | 31.0°C | 27.0°C | 29.0°C | 105 mm | 81% | 5.2 m/s | 5.6 |
| 1997 | 30.0°C | 26.4°C | 28.2°C | 98 mm | 80% | 4.6 m/s | 5.7 |
| 1996 | 30.5°C | 25.6°C | 28.0°C | 21 mm | 81% | 4.5 m/s | 5.6 |
| 1995 | 31.2°C | 26.8°C | 29.0°C | 58 mm | 79% | 4.8 m/s | 5.6 |
| 1994 | 30.8°C | 25.0°C | 27.9°C | 128 mm | 77% | 5.1 m/s | 5.5 |
| 1993 | 30.3°C | 26.4°C | 28.4°C | 135 mm | 79% | 5.4 m/s | 5.2 |
| 1992 | 31.0°C | 25.2°C | 28.1°C | 144 mm | 78% | 4.7 m/s | 5.3 |
| 1991 | 31.1°C | 25.6°C | 28.4°C | 9 mm | 80% | 4.5 m/s | 5.5 |
| 1990 | 29.0°C | 26.2°C | 27.6°C | 61 mm | 82% | 4.7 m/s | 5.4 |
| 1989 | 30.4°C | 26.0°C | 28.2°C | 36 mm | 81% | 4 m/s | 5.6 |
| 1988 | 31.0°C | 27.0°C | 29.0°C | 193 mm | 84% | 4.2 m/s | 5 |
| 1987 | 32.2°C | 26.6°C | 29.4°C | 2 mm | 78% | 5.2 m/s | 6 |
| 1986 | 32.2°C | 25.0°C | 28.6°C | 8 mm | 77% | 4.9 m/s | 5.9 |
| 1985 | 32.1°C | 25.9°C | 29.0°C | 21 mm | 77% | 4.6 m/s | 5.8 |
| 1984 | 31.1°C | 24.7°C | 27.9°C | 120 mm | 82% | 4.7 m/s | 5.5 |
| 1983 | 30.7°C | 26.2°C | 28.4°C | 125 mm | 83% | 4 m/s | — |
| 1982 ❄️ | 30.1°C | 24.9°C | 27.5°C | 54 mm | 78% | 4 m/s | — |
| 1981 | 31.1°C | 26.4°C | 28.7°C | 103 mm | 83% | 3.9 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 30.6°C with lows near 26.2°C (mean 28.4°C), based on 45 years of NASA POWER data.
September averages 120 mm of rainfall in Diu, a relatively wet time of year. The wettest on record was 480 mm in 2021.
The hottest September reached 33.8°C in 2001. The coldest dipped to 24.7°C in 1984.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have held steady by about 0°C. Daytime highs moved from 31°C to 30°C and overnight lows from 25.6°C to 26.6°C over the same span.
September is one of the warmer months of the year in Diu and a relatively wet time of year, so plan for around 30.6°C daytime highs and 26.2°C at night.
Not quite — September is the 7th coolest month in Diu, averaging 28.4°C.
For September in Diu, pack light, breathable clothing and sun protection, with typical highs of 30.6°C and lows of 26.2°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 81% — quite humid.
Average wind speed in September is 4.6 m/s. The windiest September on record averaged 5.6 m/s (2021).
The wettest September on record was 2021 with 480 mm. On average, September sees 120 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 Diu 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.
