September is one of the warmer months of the year in Middlesbrough, with average highs near 16.1°C and lows around 9.2°C (mean 12.7°C). It is about average for rainfall, averaging 69 mm of rainfall and 86% relative humidity across the period.
September is one of the warmer months of the year in Middlesbrough. Across 45 years of records, the warmest September in Middlesbrough was 2006 — when the month averaged 15.1°C — while the coldest was 1986 at 10.4°C. Typical September days reach 16.1°C with nights near 9.2°C. The long-term trend is warming, about 0.3°C per decade.
September is about average for rainfall in Middlesbrough, averaging 69 mm of rainfall. The wettest September on record was 1984 with 119 mm, while the driest were 1986 and 1989 at 20 mm.
Relative humidity in Middlesbrough during September averages 86%. The most humid September was 1998 at 89%, and the least humid was 1990 at 82%.
September receives about 2.7 kWh/m²/day of solar energy in Middlesbrough. The sunniest Septembers were 2003 and 2004 at 3.1 kWh/m²/day, and the cloudiest was 2000 at 2.
Average wind speed in Middlesbrough during September is 3.7 m/s. The windiest September was 1983 at 4.6 m/s, while the calmest was 2014 at 2.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 12.1°C | 12.3°C | 13.1°C | 12.7°C | 13.4°C | +1.3°C |
| Avg High | 15.5°C | 15.6°C | 16.5°C | 16.2°C | 16.9°C | +1.4°C |
| Avg Low | 8.7°C | 9.0°C | 9.7°C | 9.1°C | 9.9°C | +1.2°C |
| Avg Rain | 66 mm | 70 mm | 66 mm | 68 mm | 82 mm | +16 mm |
September temperatures in Middlesbrough have risen by about 1.2°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 2.4°C (1988) to a record high of 25.6°C (2023).
Rainfall in September is about average for rainfall, averaging 69 mm, with a wettest year of 119 mm.
One of the best times to visit Middlesbrough
September is one of the best times to visit Middlesbrough. Expect days averaging 16.1°C and nights around 9.2°C (mean 12.7°C) — warmer than Middlesbrough's yearly average — with moderate rainfall (69 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 | 16.5°C | 12.9°C | 9.4°C | 20.1°C | 4.1°C | 112 mm | 85% | 3.7 m/s | 3 |
| 2024 | 15.7°C | 12.5°C | 9.2°C | 21.0°C | 4.1°C | 118 mm | 88% | 3.6 m/s | 2.5 |
| 2023 | 18.5°C | 14.9°C | 11.3°C | 25.6°C | 7.4°C | 82 mm | 87% | 3.2 m/s | 2.8 |
| 2022 | 16.5°C | 13.2°C | 9.9°C | 22.1°C | 5.0°C | 79 mm | 86% | 3.3 m/s | 2.8 |
| 2021 | 18.1°C | 14.5°C | 11.0°C | 23.8°C | 6.7°C | 49 mm | 87% | 3 m/s | 2.8 |
| 2020 | 16.1°C | 12.4°C | 8.7°C | 23.1°C | 4.5°C | 52 mm | 85% | 3.9 m/s | 2.9 |
| 2019 | 16.1°C | 12.6°C | 9.2°C | 19.4°C | 5.6°C | 101 mm | 86% | 3.6 m/s | 3 |
| 2018 | 16.0°C | 12.3°C | 8.5°C | 21.4°C | 3.4°C | 58 mm | 85% | 4.2 m/s | 2.9 |
| 2017 | 15.7°C | 12.4°C | 9.1°C | 19.6°C | 5.9°C | 91 mm | 88% | 3.7 m/s | 2.7 |
| 2016 | 17.7°C | 14.3°C | 10.8°C | 23.7°C | 7.6°C | 51 mm | 87% | 3.7 m/s | 2.8 |
| 2015 | 15.2°C | 11.5°C | 7.8°C | 17.4°C | 5.7°C | 54 mm | 87% | 3.1 m/s | 2.9 |
| 2014 | 17.3°C | 13.3°C | 9.4°C | 19.6°C | 6.4°C | 27 mm | 88% | 2.3 m/s | 2.6 |
| 2013 | 15.6°C | 12.2°C | 8.8°C | 20.7°C | 5.0°C | 46 mm | 87% | 3.6 m/s | 2.6 |
| 2012 | 15.0°C | 11.7°C | 8.3°C | 20.5°C | 3.7°C | 105 mm | 87% | 4.2 m/s | 2.9 |
| 2011 | 16.9°C | 13.4°C | 9.8°C | 22.8°C | 5.8°C | 48 mm | 85% | 4.4 m/s | 2.8 |
| 2010 | 16.1°C | 12.8°C | 9.6°C | 20.0°C | 5.5°C | 97 mm | 86% | 4 m/s | 2.8 |
| 2009 | 16.1°C | 13.0°C | 9.8°C | 21.6°C | 7.0°C | 36 mm | 86% | 3.8 m/s | 2.8 |
| 2008 | 15.7°C | 12.6°C | 9.5°C | 18.1°C | 7.2°C | 111 mm | 89% | 3.3 m/s | 2.5 |
| 2007 | 15.9°C | 12.5°C | 9.0°C | 20.3°C | 4.6°C | 45 mm | 86% | 4 m/s | 2.9 |
| 2006 🔥 | 18.8°C | 15.1°C | 11.5°C | 22.6°C | 7.7°C | 66 mm | 87% | 3.4 m/s | 3 |
| 2005 | 17.1°C | 13.6°C | 10.1°C | 21.8°C | 4.8°C | 66 mm | 86% | 3.8 m/s | 2.9 |
| 2004 | 16.4°C | 13.0°C | 9.6°C | 22.5°C | 6.5°C | 34 mm | 86% | 4.4 m/s | 3.1 |
| 2003 | 16.9°C | 12.9°C | 9.0°C | 21.1°C | 3.7°C | 73 mm | 85% | 2.8 m/s | 3.1 |
| 2002 | 16.2°C | 12.9°C | 9.5°C | 19.4°C | 7.1°C | 30 mm | 87% | 2.6 m/s | 2.8 |
| 2001 | 15.2°C | 12.2°C | 9.2°C | 19.8°C | 7.0°C | 91 mm | 88% | 4.4 m/s | 2.3 |
| 2000 | 16.3°C | 13.0°C | 9.7°C | 21.4°C | 5.7°C | 110 mm | 89% | 3.5 m/s | 2 |
| 1999 | 17.8°C | 14.2°C | 10.5°C | 22.9°C | 7.3°C | 86 mm | 87% | 3.3 m/s | 3 |
| 1998 | 16.1°C | 13.1°C | 10.1°C | 20.8°C | 6.0°C | 77 mm | 89% | 3.5 m/s | 2.4 |
| 1997 | 15.7°C | 12.2°C | 8.8°C | 19.0°C | 5.6°C | 23 mm | 85% | 3.5 m/s | 3 |
| 1996 | 15.2°C | 12.3°C | 9.4°C | 20.4°C | 6.3°C | 37 mm | 84% | 3.8 m/s | 2.6 |
| 1995 | 15.6°C | 12.1°C | 8.7°C | 18.9°C | 2.4°C | 110 mm | 87% | 3.4 m/s | 2.7 |
| 1994 | 14.1°C | 11.2°C | 8.3°C | 18.5°C | 4.3°C | 94 mm | 87% | 4 m/s | 2.7 |
| 1993 | 14.1°C | 11.3°C | 8.5°C | 21.2°C | 4.7°C | 86 mm | 86% | 4 m/s | 2.4 |
| 1992 | 15.4°C | 11.9°C | 8.4°C | 19.9°C | 5.5°C | 94 mm | 86% | 4 m/s | 2.6 |
| 1991 | 16.8°C | 12.8°C | 8.7°C | 21.3°C | 5.1°C | 36 mm | 82% | 3.6 m/s | 3 |
| 1990 | 14.9°C | 11.7°C | 8.4°C | 19.8°C | 4.6°C | 55 mm | 82% | 3.8 m/s | 2.7 |
| 1989 | 16.2°C | 12.9°C | 9.5°C | 20.7°C | 6.6°C | 20 mm | 84% | 3.6 m/s | 2.7 |
| 1988 | 15.1°C | 11.8°C | 8.5°C | 21.6°C | 2.4°C | 52 mm | 86% | 4.3 m/s | 2.5 |
| 1987 | 15.0°C | 11.7°C | 8.4°C | 19.2°C | 3.4°C | 73 mm | 86% | 3.8 m/s | 2.7 |
| 1986 ❄️ | 14.2°C | 10.4°C | 6.6°C | 18.9°C | 2.7°C | 20 mm | 83% | 3.3 m/s | 3 |
| 1985 | 16.1°C | 12.6°C | 9.1°C | 20.7°C | 4.6°C | 63 mm | 88% | 3.5 m/s | 2.7 |
| 1984 🌧️ | 15.0°C | 12.0°C | 9.0°C | 21.1°C | 5.9°C | 119 mm | 84% | 3.8 m/s | 2.5 |
| 1983 | 15.0°C | 11.7°C | 8.5°C | 19.4°C | 4.3°C | 88 mm | 86% | 4.6 m/s | — |
| 1982 | 16.6°C | 12.7°C | 8.8°C | 22.2°C | 4.5°C | 64 mm | 85% | 3.9 m/s | — |
| 1981 | 16.6°C | 13.1°C | 9.6°C | 20.3°C | 7.6°C | 96 mm | 85% | 3.9 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 16.1°C with lows near 9.2°C (mean 12.7°C), based on 45 years of NASA POWER data.
September averages 69 mm of rainfall in Middlesbrough, about average for rainfall. The wettest on record was 119 mm in 1984.
The hottest September reached 25.6°C in 2023. The coldest dipped to 2.4°C in 1988.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 1.2°C. Daytime highs moved from 15.9°C to 17.1°C and overnight lows from 9°C to 10.2°C over the same span.
September is one of the warmer months of the year in Middlesbrough and about average for rainfall, so plan for around 16.1°C daytime highs and 9.2°C at night.
Not quite — September is the 9th coolest month in Middlesbrough, averaging 12.7°C.
For September in Middlesbrough, pack light layers you can adjust through the day, with typical highs of 16.1°C and lows of 9.2°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 86% — quite humid.
Average wind speed in September is 3.7 m/s. The windiest September on record averaged 4.6 m/s (1983).
The wettest September on record was 1984 with 119 mm. On average, September sees 69 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 Middlesbrough 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.
