September is one of the warmer months of the year in Hereford, with average highs near 18.6°C and lows around 9.4°C (mean 14°C). It is about average for rainfall, averaging 62 mm of rainfall and 83% relative humidity across the period.
September is one of the warmer months of the year in Hereford. Across 45 years of records, the warmest September in Hereford was 2023 — when the month averaged 16.8°C — while the coldest was 1986 at 11.2°C. Typical September days reach 18.6°C with nights near 9.4°C. The long-term trend is warming, about 0.2°C per decade.
September is about average for rainfall in Hereford, averaging 62 mm of rainfall. The wettest September on record was 2000 with 126 mm, while the driest was 2014 at 14 mm.
Relative humidity in Hereford during September averages 83%. The most humid September was 2000 at 88%, and the least humid was 1991 at 75%.
September receives about 3 kWh/m²/day of solar energy in Hereford. The sunniest Septembers were 1991, 2015 and 2020 at 3.4 kWh/m²/day, and the cloudiest were 2000, 2001 and 2024, among others at 2.5.
Average wind speed in Hereford during September is 3 m/s. The windiest Septembers were 1983, 2004 and 2011 at 3.7 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 | 13.7°C | 13.7°C | 14.3°C | 13.9°C | 14.8°C | +1.1°C |
| Avg High | 18.2°C | 18.3°C | 19.0°C | 18.6°C | 19.5°C | +1.3°C |
| Avg Low | 9.2°C | 9.1°C | 9.7°C | 9.2°C | 10.1°C | +0.9°C |
| Avg Rain | 62 mm | 72 mm | 50 mm | 58 mm | 71 mm | +9 mm |
September temperatures in Hereford have risen by about 1°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 1.1°C (1986) to a record high of 28.3°C (2023).
Rainfall in September is about average for rainfall, averaging 62 mm, with a wettest year of 126 mm.
One of the best times to visit Hereford
September is one of the best times to visit Hereford. Expect days averaging 18.6°C and nights around 9.4°C (mean 14°C) — warmer than Hereford's yearly average — with moderate rainfall (62 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 | 18.7°C | 14.1°C | 9.4°C | 23.2°C | 3.2°C | 83 mm | 82% | 3.4 m/s | 3 |
| 2024 | 18.2°C | 13.9°C | 9.7°C | 24.4°C | 3.1°C | 114 mm | 87% | 2.9 m/s | 2.5 |
| 2023 🔥 | 21.5°C | 16.8°C | 12.1°C | 28.3°C | 6.5°C | 64 mm | 83% | 2.7 m/s | 3 |
| 2022 | 19.4°C | 14.7°C | 10.1°C | 25.3°C | 5.5°C | 63 mm | 81% | 2.8 m/s | 3 |
| 2021 | 20.5°C | 15.7°C | 10.8°C | 27.4°C | 6.8°C | 64 mm | 85% | 2.4 m/s | 3 |
| 2020 | 18.8°C | 13.8°C | 8.7°C | 25.0°C | 3.1°C | 35 mm | 83% | 2.9 m/s | 3.4 |
| 2019 | 19.0°C | 14.2°C | 9.4°C | 24.4°C | 5.9°C | 111 mm | 83% | 3.1 m/s | 3.2 |
| 2018 | 18.4°C | 13.7°C | 9.0°C | 23.3°C | 3.2°C | 61 mm | 83% | 3.2 m/s | 2.9 |
| 2017 | 17.4°C | 13.1°C | 8.8°C | 21.5°C | 5.9°C | 78 mm | 87% | 3.1 m/s | 2.7 |
| 2016 | 19.8°C | 15.4°C | 11.0°C | 25.9°C | 6.5°C | 67 mm | 86% | 3.1 m/s | 3 |
| 2015 | 17.5°C | 12.5°C | 7.6°C | 20.9°C | 4.4°C | 42 mm | 83% | 2.5 m/s | 3.4 |
| 2014 | 20.0°C | 14.8°C | 9.7°C | 22.7°C | 6.4°C | 14 mm | 83% | 2 m/s | 3.2 |
| 2013 | 18.7°C | 13.7°C | 8.7°C | 23.9°C | 5.2°C | 42 mm | 84% | 2.5 m/s | 2.8 |
| 2012 | 17.1°C | 12.5°C | 7.9°C | 22.0°C | 4.4°C | 78 mm | 85% | 3.2 m/s | 3.1 |
| 2011 | 19.6°C | 15.0°C | 10.4°C | 26.0°C | 7.5°C | 39 mm | 82% | 3.7 m/s | 3 |
| 2010 | 18.2°C | 13.6°C | 9.1°C | 22.1°C | 3.0°C | 47 mm | 83% | 3.1 m/s | 2.9 |
| 2009 | 18.8°C | 13.9°C | 8.9°C | 23.3°C | 6.2°C | 19 mm | 83% | 3 m/s | 3.1 |
| 2008 | 17.5°C | 13.2°C | 9.0°C | 20.0°C | 5.9°C | 87 mm | 85% | 2.8 m/s | 2.8 |
| 2007 | 18.2°C | 13.8°C | 9.4°C | 22.8°C | 4.2°C | 28 mm | 85% | 3.1 m/s | 3.1 |
| 2006 | 21.7°C | 16.7°C | 11.8°C | 27.0°C | 6.9°C | 65 mm | 82% | 3.2 m/s | 3.2 |
| 2005 | 20.4°C | 15.2°C | 10.1°C | 27.9°C | 4.5°C | 39 mm | 81% | 2.8 m/s | 3.1 |
| 2004 | 19.3°C | 14.7°C | 10.1°C | 26.1°C | 6.4°C | 38 mm | 82% | 3.7 m/s | 3.2 |
| 2003 | 19.7°C | 14.4°C | 9.0°C | 24.7°C | 4.3°C | 21 mm | 79% | 2.2 m/s | 3.1 |
| 2002 | 18.9°C | 14.2°C | 9.6°C | 22.8°C | 6.1°C | 25 mm | 81% | 2.4 m/s | 3.1 |
| 2001 | 17.1°C | 13.0°C | 9.0°C | 21.5°C | 6.5°C | 50 mm | 86% | 3.3 m/s | 2.5 |
| 2000 🌧️ | 18.3°C | 14.3°C | 10.3°C | 25.6°C | 5.5°C | 126 mm | 88% | 2.9 m/s | 2.5 |
| 1999 | 19.5°C | 15.1°C | 10.6°C | 25.0°C | 6.2°C | 114 mm | 85% | 2.8 m/s | 3.2 |
| 1998 | 19.0°C | 14.7°C | 10.4°C | 23.1°C | 6.1°C | 90 mm | 85% | 3.2 m/s | 3 |
| 1997 | 18.9°C | 14.1°C | 9.2°C | 22.7°C | 5.9°C | 29 mm | 83% | 2.9 m/s | 3 |
| 1996 | 18.6°C | 13.6°C | 8.7°C | 22.9°C | 5.8°C | 22 mm | 79% | 3.1 m/s | 3.1 |
| 1995 | 17.6°C | 13.3°C | 9.1°C | 21.2°C | 5.2°C | 104 mm | 82% | 3 m/s | 2.9 |
| 1994 | 16.5°C | 12.4°C | 8.3°C | 20.3°C | 3.0°C | 101 mm | 85% | 3.2 m/s | 2.9 |
| 1993 | 16.6°C | 12.1°C | 7.5°C | 23.7°C | 2.4°C | 92 mm | 84% | 2.9 m/s | 2.5 |
| 1992 | 17.1°C | 13.0°C | 8.9°C | 21.2°C | 4.6°C | 81 mm | 86% | 3.2 m/s | 3 |
| 1991 | 20.8°C | 15.3°C | 9.7°C | 27.3°C | 6.1°C | 46 mm | 75% | 2.9 m/s | 3.4 |
| 1990 | 18.1°C | 13.2°C | 8.2°C | 23.8°C | 3.2°C | 40 mm | 76% | 2.9 m/s | 2.9 |
| 1989 | 19.5°C | 14.9°C | 10.2°C | 24.7°C | 5.9°C | 44 mm | 80% | 2.9 m/s | 2.9 |
| 1988 | 17.4°C | 13.2°C | 8.9°C | 25.3°C | 4.0°C | 50 mm | 83% | 3.4 m/s | 2.6 |
| 1987 | 18.2°C | 13.7°C | 9.1°C | 23.6°C | 4.8°C | 49 mm | 83% | 3 m/s | 2.9 |
| 1986 ❄️ | 16.4°C | 11.2°C | 6.1°C | 20.4°C | 1.1°C | 21 mm | 82% | 2.3 m/s | 3.3 |
| 1985 | 18.7°C | 14.3°C | 9.9°C | 22.9°C | 5.7°C | 30 mm | 86% | 2.8 m/s | 3 |
| 1984 | 18.0°C | 13.7°C | 9.4°C | 25.3°C | 5.2°C | 83 mm | 79% | 3.4 m/s | 2.8 |
| 1983 | 17.9°C | 13.6°C | 9.3°C | 22.4°C | 4.2°C | 75 mm | 84% | 3.7 m/s | — |
| 1982 | 19.2°C | 14.3°C | 9.4°C | 26.2°C | 4.8°C | 79 mm | 84% | 2.7 m/s | — |
| 1981 | 18.3°C | 14.2°C | 10.1°C | 22.3°C | 5.8°C | 125 mm | 83% | 3.1 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 18.6°C with lows near 9.4°C (mean 14°C), based on 45 years of NASA POWER data.
September averages 62 mm of rainfall in Hereford, about average for rainfall. The wettest on record was 126 mm in 2000.
The hottest September reached 28.3°C in 2023. The coldest dipped to 1.1°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 18.4°C to 19.7°C and overnight lows from 9.6°C to 10.4°C over the same span.
September is one of the warmer months of the year in Hereford and about average for rainfall, so plan for around 18.6°C daytime highs and 9.4°C at night.
Not quite — September is the 9th coolest month in Hereford, averaging 14°C.
For September in Hereford, pack light layers you can adjust through the day, with typical highs of 18.6°C and lows of 9.4°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 83% — quite humid.
Average wind speed in September is 3 m/s. The windiest September on record averaged 3.7 m/s (1983).
The wettest September on record was 2000 with 126 mm. On average, September sees 62 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 Hereford 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.
