September is one of the warmer months of the year in Saltash, with average highs near 17.1°C and lows around 11.8°C (mean 14.5°C). It is one of the drier months, averaging 83 mm of rainfall and 86% relative humidity across the period.
September is one of the warmer months of the year in Saltash. Across 45 years of records, the warmest September in Saltash was 2023 — when the month averaged 16.9°C — while the coldest was 1986 at 12°C. Typical September days reach 17.1°C with nights near 11.8°C. The long-term trend is warming, about 0.2°C per decade.
September is one of the drier months in Saltash, averaging 83 mm of rainfall. The wettest September on record was 1981 with 155 mm, while the driest was 2014 at 13 mm.
Relative humidity in Saltash during September averages 86%. The most humid September was 1998 at 89%, and the least humid was 1990 at 79%.
September receives about 3.4 kWh/m²/day of solar energy in Saltash. The sunniest Septembers were 1996 and 2014 at 3.9 kWh/m²/day, and the cloudiest was 2000 at 2.9.
Average wind speed in Saltash during September is 4.1 m/s. The windiest September was 1983 at 5.1 m/s, while the calmest was 2014 at 2.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 14.1°C | 14.2°C | 14.6°C | 14.5°C | 15.2°C | +1.1°C |
| Avg High | 16.8°C | 16.9°C | 17.3°C | 17.0°C | 18.0°C | +1.2°C |
| Avg Low | 11.5°C | 11.6°C | 11.9°C | 11.9°C | 12.5°C | +1°C |
| Avg Rain | 85 mm | 94 mm | 62 mm | 84 mm | 99 mm | +14 mm |
September temperatures in Saltash have risen by about 1°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 5.7°C (2010) to a record high of 24.9°C (2023).
Rainfall in September is one of the drier months, averaging 83 mm, with a wettest year of 155 mm.
One of the best times to visit Saltash
September is one of the best times to visit Saltash. Expect days averaging 17.1°C and nights around 11.8°C (mean 14.5°C) — warmer than Saltash's yearly average — with higher rainfall (83 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 | 16.9°C | 14.3°C | 11.7°C | 19.9°C | 7.3°C | 115 mm | 85% | 4.7 m/s | 3.5 |
| 2024 | 17.0°C | 14.4°C | 11.9°C | 22.1°C | 7.3°C | 135 mm | 87% | 4.2 m/s | 3 |
| 2023 🔥 | 19.6°C | 16.9°C | 14.2°C | 24.9°C | 10.6°C | 96 mm | 88% | 3.9 m/s | 3.4 |
| 2022 | 17.9°C | 15.3°C | 12.6°C | 22.3°C | 8.1°C | 106 mm | 84% | 4.3 m/s | 3.3 |
| 2021 | 18.9°C | 15.9°C | 12.9°C | 23.7°C | 10.4°C | 86 mm | 88% | 3.4 m/s | 3.1 |
| 2020 | 17.5°C | 14.6°C | 11.7°C | 21.3°C | 8.1°C | 56 mm | 85% | 3.9 m/s | 3.4 |
| 2019 | 17.4°C | 14.9°C | 12.5°C | 19.5°C | 10.0°C | 136 mm | 86% | 4.9 m/s | 3.5 |
| 2018 | 17.3°C | 14.5°C | 11.7°C | 21.3°C | 7.6°C | 72 mm | 84% | 4.1 m/s | 3.4 |
| 2017 | 16.1°C | 13.9°C | 11.7°C | 19.0°C | 9.1°C | 145 mm | 87% | 4.9 m/s | 3.3 |
| 2016 | 17.8°C | 15.4°C | 13.0°C | 21.1°C | 9.3°C | 97 mm | 88% | 4.3 m/s | 3.1 |
| 2015 | 15.7°C | 13.2°C | 10.6°C | 18.6°C | 8.4°C | 70 mm | 86% | 4.2 m/s | 3.8 |
| 2014 | 18.9°C | 15.6°C | 12.3°C | 20.8°C | 9.7°C | 13 mm | 86% | 2.9 m/s | 3.9 |
| 2013 | 17.4°C | 14.7°C | 11.9°C | 20.6°C | 9.6°C | 61 mm | 86% | 3.9 m/s | 3 |
| 2012 | 15.9°C | 13.4°C | 11.0°C | 19.4°C | 7.5°C | 80 mm | 86% | 4 m/s | 3.4 |
| 2011 | 17.1°C | 14.9°C | 12.7°C | 20.6°C | 10.9°C | 71 mm | 87% | 4.9 m/s | 3.3 |
| 2010 | 16.7°C | 14.0°C | 11.3°C | 19.5°C | 5.7°C | 95 mm | 87% | 4.1 m/s | 3.5 |
| 2009 | 17.0°C | 14.1°C | 11.1°C | 19.6°C | 9.6°C | 42 mm | 87% | 3.9 m/s | 3.6 |
| 2008 | 16.1°C | 13.7°C | 11.3°C | 17.7°C | 9.2°C | 96 mm | 87% | 4.1 m/s | 3.5 |
| 2007 | 17.2°C | 14.3°C | 11.3°C | 21.8°C | 6.1°C | 43 mm | 86% | 3.9 m/s | 3.7 |
| 2006 | 18.8°C | 16.2°C | 13.6°C | 21.2°C | 11.5°C | 53 mm | 88% | 4.4 m/s | 3.5 |
| 2005 | 17.9°C | 15.1°C | 12.4°C | 21.4°C | 7.3°C | 75 mm | 86% | 3.8 m/s | 3.4 |
| 2004 | 17.3°C | 14.9°C | 12.5°C | 22.8°C | 9.6°C | 59 mm | 86% | 5 m/s | 3.5 |
| 2003 | 17.6°C | 14.4°C | 11.3°C | 20.8°C | 7.1°C | 35 mm | 85% | 3.4 m/s | 3.6 |
| 2002 | 17.4°C | 14.4°C | 11.4°C | 20.3°C | 8.8°C | 27 mm | 85% | 3.5 m/s | 3.8 |
| 2001 | 16.4°C | 14.0°C | 11.6°C | 18.7°C | 9.9°C | 47 mm | 85% | 4.5 m/s | 3.5 |
| 2000 | 17.3°C | 14.9°C | 12.5°C | 22.1°C | 9.2°C | 141 mm | 89% | 4.1 m/s | 2.9 |
| 1999 | 17.8°C | 15.2°C | 12.7°C | 22.0°C | 9.1°C | 132 mm | 87% | 4.1 m/s | 3.5 |
| 1998 | 17.0°C | 14.9°C | 12.8°C | 19.9°C | 10.2°C | 110 mm | 89% | 4.7 m/s | 3.3 |
| 1997 | 17.8°C | 14.7°C | 11.7°C | 20.1°C | 10.1°C | 33 mm | 87% | 3.8 m/s | 3.5 |
| 1996 | 16.9°C | 13.9°C | 10.9°C | 20.3°C | 8.4°C | 42 mm | 84% | 4.1 m/s | 3.9 |
| 1995 | 16.6°C | 14.1°C | 11.6°C | 21.4°C | 9.3°C | 114 mm | 84% | 4.4 m/s | 3.5 |
| 1994 | 15.5°C | 13.2°C | 10.9°C | 18.4°C | 8.8°C | 134 mm | 87% | 4.5 m/s | 3.1 |
| 1993 | 15.6°C | 13.1°C | 10.6°C | 20.3°C | 7.7°C | 145 mm | 86% | 4.1 m/s | 3.4 |
| 1992 | 15.6°C | 13.4°C | 11.2°C | 18.2°C | 8.7°C | 103 mm | 88% | 4.5 m/s | 3.2 |
| 1991 | 18.4°C | 15.4°C | 12.4°C | 22.6°C | 9.1°C | 72 mm | 84% | 3.7 m/s | 3.6 |
| 1990 | 17.3°C | 14.2°C | 11.0°C | 21.9°C | 7.3°C | 57 mm | 79% | 3.9 m/s | 3.7 |
| 1989 | 18.1°C | 15.2°C | 12.3°C | 22.0°C | 9.0°C | 79 mm | 83% | 3.9 m/s | 3 |
| 1988 | 16.1°C | 13.6°C | 11.1°C | 20.9°C | 7.4°C | 73 mm | 86% | 4.5 m/s | 3.2 |
| 1987 | 17.2°C | 14.5°C | 11.8°C | 21.2°C | 7.6°C | 73 mm | 85% | 3.7 m/s | 3.4 |
| 1986 ❄️ | 15.1°C | 12.0°C | 8.8°C | 17.8°C | 6.6°C | 31 mm | 85% | 3.2 m/s | 3.4 |
| 1985 | 17.1°C | 14.4°C | 11.7°C | 20.2°C | 8.2°C | 53 mm | 89% | 3.8 m/s | 3.4 |
| 1984 | 16.6°C | 14.0°C | 11.5°C | 22.0°C | 8.4°C | 109 mm | 81% | 4.6 m/s | 3.4 |
| 1983 | 16.7°C | 14.2°C | 11.8°C | 21.7°C | 9.4°C | 104 mm | 86% | 5.1 m/s | — |
| 1982 | 17.6°C | 14.8°C | 12.0°C | 22.8°C | 7.6°C | 84 mm | 87% | 3.5 m/s | — |
| 1981 🌧️ | 17.1°C | 14.6°C | 12.1°C | 20.3°C | 9.6°C | 155 mm | 86% | 4.2 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 17.1°C with lows near 11.8°C (mean 14.5°C), based on 45 years of NASA POWER data.
September averages 83 mm of rainfall in Saltash, one of the drier months. The wettest on record was 155 mm in 1981.
The hottest September reached 24.9°C in 2023. The coldest dipped to 5.7°C in 2010.
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 17°C to 18.1°C and overnight lows from 11.8°C to 12.7°C over the same span.
September is one of the warmer months of the year in Saltash and one of the drier months, so plan for around 17.1°C daytime highs and 11.8°C at night.
Not quite — September is the 10th coolest month in Saltash, averaging 14.5°C.
For September in Saltash, pack light layers you can adjust through the day, with typical highs of 17.1°C and lows of 11.8°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 86% — quite humid.
Average wind speed in September is 4.1 m/s. The windiest September on record averaged 5.1 m/s (1983).
The wettest September on record was 1981 with 155 mm. On average, September sees 83 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 Saltash 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.
