September is one of the warmer months of the year in Deeg, with average highs near 37.4°C and lows around 20.6°C (mean 29°C). It is a relatively wet time of year, averaging 103 mm of rainfall and 68% relative humidity across the period.
September is one of the warmer months of the year in Deeg. Across 45 years of records, the warmest September in Deeg was 1999 — when the month averaged 31.9°C — while the coldest was 2012 at 25.6°C. Typical September days reach 37.4°C with nights near 20.6°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 | 29.3°C | 28.5°C | 30.2°C | 27.9°C | 29.0°C | -0.3°C |
| Avg High | 38.2°C | 36.8°C | 39.3°C | 35.9°C | 36.2°C | -2°C |
| Avg Low | 20.5°C | 20.2°C | 21.2°C | 19.9°C | 21.9°C | +1.4°C |
| Avg Rain | 64 mm | 122 mm | 78 mm | 98 mm | 181 mm | +117 mm |
September temperatures in Deeg have stayed relatively stable across the record.
September has ranged from a record low of 15.8°C (1982) to a record high of 41.8°C (1987).
Rainfall in September is a relatively wet time of year, averaging 103 mm, with a wettest year of 280 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.4°C per decade while lows rose 0.2°C per decade, narrowing the gap between day and night.
A good time to visit Deeg
September is a good time to visit Deeg, with days averaging 37.4°C and nights around 20.6°C (mean 29°C, warmer than Deeg's yearly average) and higher rainfall. November and February are marginally more temperate, but September still suits most travellers.
| Year | High | Low | Avg | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|
| 2025 | 33.6°C | 20.7°C | 27.2°C | 255 mm | 82% | 1.9 m/s | 5 |
| 2024 🌧️ | 34.9°C | 22.6°C | 28.8°C | 280 mm | 84% | 1.7 m/s | 4.1 |
| 2023 | 36.7°C | 20.0°C | 28.3°C | 125 mm | 75% | 1.9 m/s | 4.8 |
| 2022 | 39.0°C | 22.6°C | 30.8°C | 276 mm | 71% | 2 m/s | 4.5 |
| 2021 | 33.3°C | 22.9°C | 28.1°C | 128 mm | 85% | 2.5 m/s | 4.3 |
| 2020 | 39.6°C | 22.4°C | 31.0°C | 21 mm | 58% | 1.8 m/s | 5.3 |
| 2019 | 36.9°C | 22.3°C | 29.6°C | 135 mm | 79% | 1.5 m/s | 4.1 |
| 2018 | 34.5°C | 19.7°C | 27.1°C | 124 mm | 80% | 2.3 m/s | 4.5 |
| 2017 | 39.4°C | 18.8°C | 29.1°C | 100 mm | 57% | 1.7 m/s | 4.9 |
| 2016 | 35.7°C | 21.9°C | 28.8°C | 36 mm | 72% | 1.6 m/s | 5.3 |
| 2015 | 39.7°C | 19.3°C | 29.5°C | 42 mm | 50% | 1.9 m/s | 5.8 |
| 2014 | 38.8°C | 21.2°C | 30.0°C | 45 mm | 57% | 2.2 m/s | 5.4 |
| 2013 | 33.7°C | 20.5°C | 27.1°C | 106 mm | 79% | 1.8 m/s | 5.4 |
| 2012 ❄️ | 33.6°C | 17.6°C | 25.6°C | 104 mm | 79% | 1.9 m/s | 5.1 |
| 2011 | 33.9°C | 19.4°C | 26.7°C | 128 mm | 81% | 2 m/s | 5.2 |
| 2010 | 33.3°C | 18.1°C | 25.7°C | 162 mm | 80% | 1.9 m/s | 4.3 |
| 2009 | 39.1°C | 20.9°C | 30.0°C | 111 mm | 65% | 1.9 m/s | 5.4 |
| 2008 | 38.4°C | 20.3°C | 29.3°C | 110 mm | 72% | 1.7 m/s | 5.2 |
| 2007 | 39.6°C | 22.0°C | 30.8°C | 49 mm | 60% | 1.7 m/s | 5.2 |
| 2006 | 38.9°C | 20.9°C | 29.9°C | 48 mm | 57% | 2.1 m/s | 5.5 |
| 2005 | 41.3°C | 21.1°C | 31.2°C | 102 mm | 62% | 2.7 m/s | 4.9 |
| 2004 | 40.2°C | 21.3°C | 30.7°C | 58 mm | 59% | 2 m/s | 5.6 |
| 2003 | 36.9°C | 21.9°C | 29.4°C | 102 mm | 72% | 1.5 m/s | 4.3 |
| 2002 | 37.5°C | 20.7°C | 29.1°C | 143 mm | 65% | 1.8 m/s | 5.1 |
| 2001 | 40.8°C | 21.3°C | 31.0°C | 30 mm | 43% | 1.8 m/s | 5.8 |
| 2000 | 40.4°C | 21.4°C | 30.9°C | 26 mm | 47% | 1.8 m/s | 5.5 |
| 1999 🔥 | 40.1°C | 23.7°C | 31.9°C | 71 mm | 64% | 1.7 m/s | 4.6 |
| 1998 | 39.2°C | 23.0°C | 31.1°C | 149 mm | 72% | 1.9 m/s | 5.1 |
| 1997 | 40.2°C | 21.5°C | 30.8°C | 49 mm | 56% | 2.1 m/s | 5 |
| 1996 | 36.1°C | 18.5°C | 27.3°C | 128 mm | 76% | 1.7 m/s | 5.3 |
| 1995 | 34.9°C | 17.8°C | 26.3°C | 146 mm | 77% | 1.7 m/s | 5.4 |
| 1994 | 35.0°C | 16.8°C | 25.9°C | 24 mm | 71% | 2.3 m/s | 5.8 |
| 1993 | 36.8°C | 21.6°C | 29.2°C | 274 mm | 78% | 1.8 m/s | 5 |
| 1992 | 36.4°C | 18.5°C | 27.5°C | 117 mm | 69% | 2.2 m/s | 5.2 |
| 1991 | 34.4°C | 18.2°C | 26.3°C | 98 mm | 74% | 2 m/s | 5.5 |
| 1990 | 35.1°C | 22.3°C | 28.7°C | 162 mm | 78% | 1.9 m/s | 4.8 |
| 1989 | 39.3°C | 20.1°C | 29.7°C | 89 mm | 57% | 2 m/s | 5.5 |
| 1988 | 37.5°C | 20.8°C | 29.1°C | 46 mm | 75% | 2.2 m/s | 5.8 |
| 1987 | 41.8°C | 21.8°C | 31.8°C | 52 mm | 43% | 2 m/s | 5.7 |
| 1986 | 41.0°C | 21.7°C | 31.4°C | 34 mm | 47% | 2.2 m/s | 5.4 |
| 1985 | 37.4°C | 20.2°C | 28.8°C | 80 mm | 70% | 2.5 m/s | 5.3 |
| 1984 | 34.7°C | 18.5°C | 26.6°C | 122 mm | 75% | 1.6 m/s | 5.7 |
| 1983 | 35.9°C | 22.6°C | 29.3°C | 92 mm | 79% | 1.8 m/s | — |
| 1982 | 36.0°C | 15.8°C | 25.9°C | 6 mm | 69% | 1.9 m/s | — |
| 1981 | 39.9°C | 22.8°C | 31.4°C | 56 mm | 58% | 2.2 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 37.4°C with lows near 20.6°C (mean 29°C), based on 45 years of NASA POWER data.
September averages 103 mm of rainfall in Deeg, a relatively wet time of year. The wettest on record was 280 mm in 2024.
The hottest September reached 41.8°C in 1987. The coldest dipped to 15.8°C in 1982.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 0.2°C. Daytime highs moved from 36.8°C to 35.5°C and overnight lows from 20°C to 21.8°C over the same span.
September is one of the warmer months of the year in Deeg and a relatively wet time of year, so plan for around 37.4°C daytime highs and 20.6°C at night.
Not quite — September is the 7th coolest month in Deeg, averaging 29°C.
For September in Deeg, pack light, breathable clothing and sun protection, with typical highs of 37.4°C and lows of 20.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 68% — moderately humid.
Average wind speed in September is 1.9 m/s. The windiest September on record averaged 2.7 m/s (2005).
The wettest September on record was 2024 with 280 mm. On average, September sees 103 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 Deeg 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.
