September is one of the warmer months of the year in Odessa, with average highs near 31.2°C and lows around 17.7°C (mean 24.5°C). It is a relatively wet time of year, averaging 56 mm of rainfall and 53% relative humidity across the period.
September is one of the warmer months of the year in Odessa. Across 45 years of records, the warmest September in Odessa was 2023 — when the month averaged 28.3°C — while the coldest was 1991 at 21.1°C. Typical September days reach 31.2°C with nights near 17.7°C. The long-term trend is warming, about 0.5°C per decade.
September is a relatively wet time of year in Odessa, averaging 56 mm of rainfall. The wettest September on record was 2024 with 141 mm, while the driest was 2000 at 2 mm.
Relative humidity in Odessa during September averages 53%. The most humid September was 1991 at 68%, and the least humid was 2000 at 31%.
September receives about 5.7 kWh/m²/day of solar energy in Odessa. The sunniest September was 1992 at 6.3 kWh/m²/day, and the cloudiest was 2014 at 4.8.
Average wind speed in Odessa during September is 3.1 m/s. The windiest September was 1983 at 3.7 m/s, while the calmest were 1987 and 2008 at 2.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 23.7°C | 24.0°C | 24.2°C | 25.0°C | 25.8°C | +2.1°C |
| Avg High | 30.4°C | 30.8°C | 31.1°C | 31.5°C | 32.9°C | +2.5°C |
| Avg Low | 17.0°C | 17.2°C | 17.4°C | 18.6°C | 18.5°C | +1.5°C |
| Avg Rain | 64 mm | 53 mm | 48 mm | 68 mm | 43 mm | -21 mm |
September temperatures in Odessa have risen by about 2.2°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 3.6°C (1985) to a record high of 42°C (2023).
Rainfall in September is a relatively wet time of year, averaging 56 mm, with a wettest year of 141 mm.
One of the best times to visit Odessa
September is one of the best times to visit Odessa. Expect days averaging 31.2°C and nights around 17.7°C (mean 24.5°C) — warmer than Odessa's yearly average — with moderate rainfall (56 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 | 32.8°C | 26.0°C | 19.1°C | 37.8°C | 14.2°C | 29 mm | 50% | 3 m/s | 5.7 |
| 2024 🌧️ | 31.5°C | 24.6°C | 17.6°C | 37.3°C | 12.2°C | 141 mm | 60% | 2.9 m/s | 5.7 |
| 2023 🔥 | 35.9°C | 28.3°C | 20.7°C | 42.0°C | 17.4°C | 39 mm | 45% | 2.9 m/s | 6 |
| 2022 | 32.6°C | 25.6°C | 18.5°C | 35.2°C | 14.9°C | 19 mm | 53% | 3 m/s | 6.1 |
| 2021 | 33.9°C | 26.6°C | 19.2°C | 39.1°C | 12.1°C | 5 mm | 44% | 3.1 m/s | 6.2 |
| 2020 | 30.9°C | 23.4°C | 16.0°C | 38.4°C | 9.0°C | 26 mm | 51% | 2.9 m/s | 5.6 |
| 2019 | 33.3°C | 27.3°C | 21.2°C | 36.4°C | 19.3°C | 44 mm | 53% | 3.4 m/s | 5.7 |
| 2018 | 29.8°C | 23.7°C | 17.6°C | 36.1°C | 10.2°C | 80 mm | 66% | 3 m/s | 5.4 |
| 2017 | 31.6°C | 24.9°C | 18.3°C | 39.2°C | 13.9°C | 85 mm | 53% | 3.4 m/s | 5.3 |
| 2016 | 30.5°C | 24.5°C | 18.5°C | 36.0°C | 12.2°C | 69 mm | 63% | 3.3 m/s | 5.6 |
| 2015 | 33.1°C | 26.6°C | 20.0°C | 37.8°C | 15.9°C | 30 mm | 50% | 3.1 m/s | 6 |
| 2014 | 29.1°C | 23.6°C | 18.1°C | 41.0°C | 9.4°C | 120 mm | 66% | 3.4 m/s | 4.8 |
| 2013 | 31.8°C | 25.1°C | 18.4°C | 37.7°C | 10.4°C | 32 mm | 51% | 3.3 m/s | 5.6 |
| 2012 | 31.6°C | 24.5°C | 17.5°C | 39.8°C | 11.0°C | 123 mm | 48% | 3.2 m/s | 5.5 |
| 2011 | 33.3°C | 25.4°C | 17.6°C | 38.5°C | 12.6°C | 22 mm | 35% | 2.8 m/s | 6.1 |
| 2010 | 31.2°C | 24.8°C | 18.3°C | 36.1°C | 10.8°C | 73 mm | 60% | 3 m/s | 5.7 |
| 2009 | 29.3°C | 22.9°C | 16.5°C | 34.8°C | 9.4°C | 46 mm | 57% | 2.9 m/s | 5.4 |
| 2008 | 28.5°C | 22.3°C | 16.0°C | 33.9°C | 11.5°C | 94 mm | 61% | 2.5 m/s | 5.6 |
| 2007 | 30.6°C | 24.6°C | 18.6°C | 35.4°C | 14.5°C | 65 mm | 66% | 3.2 m/s | 5.7 |
| 2006 | 29.3°C | 22.5°C | 15.7°C | 35.5°C | 11.3°C | 58 mm | 57% | 3.1 m/s | 5.6 |
| 2005 | 33.6°C | 26.3°C | 19.1°C | 38.0°C | 13.4°C | 4 mm | 49% | 3.1 m/s | 6.1 |
| 2004 | 29.2°C | 23.2°C | 17.2°C | 37.8°C | 11.6°C | 125 mm | 62% | 3.2 m/s | 5.6 |
| 2003 | 31.1°C | 24.0°C | 16.9°C | 36.0°C | 13.8°C | 36 mm | 56% | 3.4 m/s | 5.9 |
| 2002 | 32.5°C | 25.1°C | 17.8°C | 36.0°C | 11.5°C | 23 mm | 45% | 3.2 m/s | 6 |
| 2001 | 31.8°C | 24.6°C | 17.4°C | 37.6°C | 9.7°C | 30 mm | 50% | 3.1 m/s | 6 |
| 2000 | 35.2°C | 26.9°C | 18.6°C | 40.8°C | 7.2°C | 2 mm | 31% | 3.2 m/s | 6.1 |
| 1999 | 32.4°C | 25.0°C | 17.5°C | 37.2°C | 8.0°C | 34 mm | 46% | 3.3 m/s | 5.8 |
| 1998 | 33.8°C | 26.6°C | 19.4°C | 38.3°C | 17.4°C | 19 mm | 50% | 3 m/s | 6 |
| 1997 | 32.4°C | 25.6°C | 18.8°C | 39.1°C | 11.8°C | 43 mm | 52% | 3 m/s | 6 |
| 1996 | 29.7°C | 22.9°C | 16.2°C | 34.6°C | 7.3°C | 57 mm | 58% | 2.7 m/s | 5.6 |
| 1995 | 30.7°C | 24.0°C | 17.3°C | 38.7°C | 5.2°C | 87 mm | 57% | 2.8 m/s | 5.3 |
| 1994 | 30.8°C | 23.6°C | 16.4°C | 35.3°C | 9.7°C | 38 mm | 50% | 2.8 m/s | 5.9 |
| 1993 | 30.1°C | 23.2°C | 16.3°C | 35.2°C | 8.1°C | 37 mm | 56% | 3.1 m/s | 5.6 |
| 1992 | 31.7°C | 24.4°C | 17.0°C | 36.4°C | 10.4°C | 11 mm | 50% | 3.5 m/s | 6.3 |
| 1991 ❄️ | 26.9°C | 21.1°C | 15.3°C | 32.6°C | 6.0°C | 119 mm | 68% | 3 m/s | 5 |
| 1990 | 29.3°C | 23.5°C | 17.8°C | 35.7°C | 12.3°C | 86 mm | 62% | 2.6 m/s | 5.1 |
| 1989 | 30.3°C | 23.0°C | 15.8°C | 37.1°C | 4.6°C | 50 mm | 47% | 3 m/s | 6 |
| 1988 | 30.5°C | 23.4°C | 16.4°C | 35.0°C | 9.7°C | 103 mm | 54% | 2.9 m/s | 5.8 |
| 1987 | 30.1°C | 23.1°C | 16.0°C | 34.4°C | 11.7°C | 60 mm | 56% | 2.5 m/s | 5.9 |
| 1986 | 29.1°C | 23.4°C | 17.8°C | 32.9°C | 13.2°C | 129 mm | 67% | 3.3 m/s | 5.6 |
| 1985 | 29.3°C | 23.3°C | 17.3°C | 37.2°C | 3.6°C | 92 mm | 57% | 3.4 m/s | 5.5 |
| 1984 | 29.8°C | 22.5°C | 15.2°C | 38.4°C | 3.9°C | 52 mm | 49% | 3.5 m/s | 5.5 |
| 1983 | 31.9°C | 25.2°C | 18.6°C | 37.5°C | 7.9°C | 18 mm | 48% | 3.7 m/s | — |
| 1982 | 32.6°C | 25.7°C | 18.9°C | 36.5°C | 12.2°C | 22 mm | 45% | 3.3 m/s | — |
| 1981 | 29.8°C | 23.5°C | 17.3°C | 35.0°C | 11.0°C | 48 mm | 57% | 2.9 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 31.2°C with lows near 17.7°C (mean 24.5°C), based on 45 years of NASA POWER data.
September averages 56 mm of rainfall in Odessa, a relatively wet time of year. The wettest on record was 141 mm in 2024.
The hottest September reached 42°C in 2023. The coldest dipped to 3.6°C in 1985.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 2.2°C. Daytime highs moved from 30.7°C to 33.3°C and overnight lows from 17.5°C to 19°C over the same span.
September is one of the warmer months of the year in Odessa and a relatively wet time of year, so plan for around 31.2°C daytime highs and 17.7°C at night.
Not quite — September is the 9th coolest month in Odessa, averaging 24.5°C.
For September in Odessa, pack light, breathable clothing and sun protection, with typical highs of 31.2°C and lows of 17.7°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 53% — relatively dry.
Average wind speed in September is 3.1 m/s. The windiest September on record averaged 3.7 m/s (1983).
The wettest September on record was 2024 with 141 mm. On average, September sees 56 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 Odessa 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.
