September is one of the warmer months of the year in Ebbw Vale, with average highs near 16.6°C and lows around 8.7°C (mean 12.7°C). It is about average for rainfall, averaging 85 mm of rainfall and 88% relative humidity across the period.
September is one of the warmer months of the year in Ebbw Vale. Across 45 years of records, the warmest September in Ebbw Vale was 2023 — when the month averaged 15.3°C — while the coldest was 1986 at 10.1°C. Typical September days reach 16.6°C with nights near 8.7°C. The long-term trend is warming, about 0.2°C per decade.
September is about average for rainfall in Ebbw Vale, averaging 85 mm of rainfall. The wettest September on record was 1981 with 157 mm, while the driest was 2014 at 19 mm.
Relative humidity in Ebbw Vale during September averages 88%. The most humid September was 2000 at 90%, and the least humid was 1990 at 82%.
September receives about 3.2 kWh/m²/day of solar energy in Ebbw Vale. The sunniest Septembers were 1991 and 2015 at 3.6 kWh/m²/day, and the cloudiest was 2000 at 2.6.
Average wind speed in Ebbw Vale during September is 3 m/s. The windiest Septembers were 1983, 2004 and 2011 at 3.8 m/s, while the calmest was 2014 at 2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 12.3°C | 12.2°C | 12.9°C | 12.5°C | 13.4°C | +1.1°C |
| Avg High | 16.2°C | 16.2°C | 16.9°C | 16.5°C | 17.5°C | +1.3°C |
| Avg Low | 8.4°C | 8.3°C | 8.9°C | 8.5°C | 9.3°C | +0.9°C |
| Avg Rain | 85 mm | 93 mm | 66 mm | 86 mm | 100 mm | +16 mm |
September temperatures in Ebbw Vale have risen by about 1°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 0.3°C (1986) to a record high of 25.9°C (2023).
Rainfall in September is about average for rainfall, averaging 85 mm, with a wettest year of 157 mm.
One of the best times to visit Ebbw Vale
September is one of the best times to visit Ebbw Vale. Expect days averaging 16.6°C and nights around 8.7°C (mean 12.7°C) — warmer than Ebbw Vale's yearly average — with higher rainfall (85 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 | 16.4°C | 12.5°C | 8.5°C | 19.8°C | 2.4°C | 134 mm | 88% | 3.3 m/s | 3.3 |
| 2024 | 16.4°C | 12.6°C | 8.8°C | 22.5°C | 2.3°C | 132 mm | 90% | 3 m/s | 2.7 |
| 2023 🔥 | 19.4°C | 15.3°C | 11.2°C | 25.9°C | 5.2°C | 96 mm | 87% | 2.8 m/s | 3.2 |
| 2022 | 17.2°C | 13.2°C | 9.2°C | 21.9°C | 4.7°C | 96 mm | 86% | 2.7 m/s | 3.1 |
| 2021 | 18.7°C | 14.4°C | 10.0°C | 25.2°C | 5.9°C | 90 mm | 88% | 2.4 m/s | 3.2 |
| 2020 | 17.0°C | 12.6°C | 8.2°C | 23.1°C | 3.2°C | 56 mm | 87% | 3 m/s | 3.5 |
| 2019 | 17.0°C | 12.9°C | 8.8°C | 22.0°C | 4.8°C | 153 mm | 88% | 3.2 m/s | 3.4 |
| 2018 | 16.2°C | 12.2°C | 8.1°C | 20.2°C | 2.4°C | 102 mm | 87% | 3.2 m/s | 3.1 |
| 2017 | 15.5°C | 12.0°C | 8.4°C | 19.4°C | 5.4°C | 122 mm | 90% | 3.2 m/s | 2.9 |
| 2016 | 17.8°C | 14.1°C | 10.4°C | 23.5°C | 5.8°C | 103 mm | 90% | 3.2 m/s | 3 |
| 2015 | 15.6°C | 11.2°C | 6.9°C | 19.0°C | 3.7°C | 57 mm | 87% | 2.6 m/s | 3.6 |
| 2014 | 18.0°C | 13.6°C | 9.1°C | 20.4°C | 5.0°C | 19 mm | 87% | 2 m/s | 3.4 |
| 2013 | 16.8°C | 12.4°C | 8.1°C | 21.3°C | 5.0°C | 60 mm | 88% | 2.6 m/s | 3 |
| 2012 | 14.9°C | 11.1°C | 7.3°C | 20.0°C | 4.2°C | 94 mm | 89% | 3.3 m/s | 3.4 |
| 2011 | 16.9°C | 13.4°C | 9.8°C | 22.6°C | 6.2°C | 67 mm | 88% | 3.8 m/s | 3.1 |
| 2010 | 16.2°C | 12.2°C | 8.3°C | 19.8°C | 1.7°C | 82 mm | 88% | 3.1 m/s | 3 |
| 2009 | 16.7°C | 12.4°C | 8.2°C | 20.7°C | 5.4°C | 31 mm | 88% | 3 m/s | 3.4 |
| 2008 | 15.8°C | 12.1°C | 8.4°C | 18.3°C | 5.7°C | 108 mm | 89% | 2.8 m/s | 3 |
| 2007 | 16.5°C | 12.6°C | 8.6°C | 20.9°C | 3.3°C | 45 mm | 89% | 3.1 m/s | 3.3 |
| 2006 | 19.1°C | 15.0°C | 10.9°C | 23.1°C | 6.4°C | 72 mm | 87% | 3.2 m/s | 3.2 |
| 2005 | 17.9°C | 13.4°C | 8.9°C | 24.6°C | 3.5°C | 59 mm | 87% | 2.8 m/s | 3.3 |
| 2004 | 17.0°C | 13.2°C | 9.5°C | 24.0°C | 6.7°C | 68 mm | 87% | 3.8 m/s | 3.3 |
| 2003 | 17.2°C | 12.7°C | 8.1°C | 21.5°C | 3.6°C | 31 mm | 86% | 2.2 m/s | 3.4 |
| 2002 | 16.9°C | 12.7°C | 8.6°C | 20.8°C | 4.8°C | 31 mm | 86% | 2.3 m/s | 3.4 |
| 2001 | 15.5°C | 12.0°C | 8.5°C | 19.4°C | 6.4°C | 68 mm | 89% | 3.3 m/s | 2.9 |
| 2000 | 16.7°C | 13.1°C | 9.6°C | 23.2°C | 4.5°C | 147 mm | 90% | 3 m/s | 2.6 |
| 1999 | 17.6°C | 13.8°C | 10.0°C | 23.0°C | 5.2°C | 148 mm | 88% | 2.9 m/s | 3.3 |
| 1998 | 16.9°C | 13.3°C | 9.8°C | 21.4°C | 5.7°C | 119 mm | 89% | 3.2 m/s | 3.1 |
| 1997 | 16.8°C | 12.6°C | 8.5°C | 20.0°C | 5.7°C | 47 mm | 88% | 3 m/s | 3.3 |
| 1996 | 16.5°C | 12.2°C | 7.9°C | 21.5°C | 4.1°C | 37 mm | 85% | 3.1 m/s | 3.3 |
| 1995 | 15.7°C | 12.0°C | 8.4°C | 20.4°C | 4.5°C | 104 mm | 86% | 3 m/s | 3 |
| 1994 | 14.6°C | 11.2°C | 7.8°C | 18.2°C | 2.3°C | 124 mm | 89% | 3.2 m/s | 3 |
| 1993 | 14.9°C | 10.9°C | 7.0°C | 21.7°C | 2.9°C | 119 mm | 88% | 2.8 m/s | 2.8 |
| 1992 | 15.0°C | 11.6°C | 8.1°C | 19.1°C | 3.5°C | 118 mm | 89% | 3.3 m/s | 3.1 |
| 1991 | 18.1°C | 13.4°C | 8.8°C | 24.2°C | 5.4°C | 57 mm | 83% | 2.9 m/s | 3.6 |
| 1990 | 15.9°C | 11.5°C | 7.1°C | 20.7°C | 2.1°C | 56 mm | 82% | 2.9 m/s | 3.3 |
| 1989 | 17.2°C | 13.1°C | 9.0°C | 21.8°C | 4.7°C | 65 mm | 86% | 2.9 m/s | 2.9 |
| 1988 | 15.6°C | 12.0°C | 8.3°C | 23.4°C | 3.8°C | 73 mm | 88% | 3.5 m/s | 2.9 |
| 1987 | 16.2°C | 12.2°C | 8.3°C | 21.3°C | 3.8°C | 77 mm | 88% | 3 m/s | 3 |
| 1986 ❄️ | 14.7°C | 10.1°C | 5.5°C | 19.0°C | 0.3°C | 24 mm | 85% | 2.4 m/s | 3.4 |
| 1985 | 17.0°C | 13.1°C | 9.3°C | 20.7°C | 4.7°C | 50 mm | 89% | 3 m/s | 3.2 |
| 1984 | 15.7°C | 12.1°C | 8.5°C | 21.3°C | 4.4°C | 116 mm | 85% | 3.5 m/s | 3.1 |
| 1983 | 15.9°C | 12.3°C | 8.8°C | 20.9°C | 3.7°C | 106 mm | 88% | 3.8 m/s | — |
| 1982 | 17.0°C | 12.9°C | 8.8°C | 23.9°C | 4.3°C | 98 mm | 88% | 2.7 m/s | — |
| 1981 🌧️ | 16.3°C | 12.8°C | 9.3°C | 20.0°C | 5.6°C | 157 mm | 87% | 3.1 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 16.6°C with lows near 8.7°C (mean 12.7°C), based on 45 years of NASA POWER data.
September averages 85 mm of rainfall in Ebbw Vale, about average for rainfall. The wettest on record was 157 mm in 1981.
The hottest September reached 25.9°C in 2023. The coldest dipped to 0.3°C in 1986.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 1°C. Daytime highs moved from 16.4°C to 17.6°C and overnight lows from 8.9°C to 9.5°C over the same span.
September is one of the warmer months of the year in Ebbw Vale and about average for rainfall, so plan for around 16.6°C daytime highs and 8.7°C at night.
Not quite — September is the 9th coolest month in Ebbw Vale, averaging 12.7°C.
For September in Ebbw Vale, pack light layers you can adjust through the day, with typical highs of 16.6°C and lows of 8.7°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 88% — quite humid.
Average wind speed in September is 3 m/s. The windiest September on record averaged 3.8 m/s (1983).
The wettest September on record was 1981 with 157 mm. On average, September sees 85 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 Ebbw Vale 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.
