September is one of the warmer months of the year in Saint Andrews, with average highs near 14.6°C and lows around 10.3°C (mean 12.5°C). It is about average for rainfall, averaging 70 mm of rainfall and 86% relative humidity across the period.
September is one of the warmer months of the year in Saint Andrews. Across 45 years of records, the warmest Septembers in Saint Andrews were 2006 and 2021 — when the month averaged 14.3°C — while the coldest was 1986 at 10.7°C. Typical September days reach 14.6°C with nights near 10.3°C. The long-term trend is warming, about 0.3°C per decade.
September is about average for rainfall in Saint Andrews, averaging 70 mm of rainfall. The wettest September on record was 1995 with 151 mm, while the driest was 1986 at 24 mm.
Relative humidity in Saint Andrews during September averages 86%. The most humid September was 1998 at 91%, and the least humid was 1990 at 82%.
September receives about 2.5 kWh/m²/day of solar energy in Saint Andrews. The sunniest September was 1991 at 3 kWh/m²/day, and the cloudiest was 2000 at 2.
Average wind speed in Saint Andrews during September is 4.4 m/s. The windiest September was 1983 at 5.7 m/s, while the calmest were 2002 and 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 | 11.8°C | 12.1°C | 12.8°C | 12.5°C | 13.2°C | +1.4°C |
| Avg High | 14.0°C | 14.2°C | 14.9°C | 14.6°C | 15.4°C | +1.4°C |
| Avg Low | 9.6°C | 10.0°C | 10.7°C | 10.4°C | 11.1°C | +1.5°C |
| Avg Rain | 81 mm | 72 mm | 67 mm | 65 mm | 65 mm | -16 mm |
September temperatures in Saint Andrews have risen by about 1.5°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 4.6°C (1986) to a record high of 21°C (2023).
Rainfall in September is about average for rainfall, averaging 70 mm, with a wettest year of 151 mm.
One of the best times to visit Saint Andrews
September is one of the best times to visit Saint Andrews. Expect days averaging 14.6°C and nights around 10.3°C (mean 12.5°C) — warmer than Saint Andrews's yearly average — with moderate rainfall (70 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 | 15.6°C | 13.3°C | 11.0°C | 17.9°C | 7.0°C | 61 mm | 84% | 4.6 m/s | 2.7 |
| 2024 | 14.0°C | 11.9°C | 9.9°C | 18.9°C | 6.0°C | 35 mm | 87% | 4 m/s | 2.7 |
| 2023 | 16.3°C | 14.0°C | 11.7°C | 21.0°C | 7.4°C | 78 mm | 87% | 4.3 m/s | 2.8 |
| 2022 | 15.5°C | 13.4°C | 11.3°C | 18.2°C | 7.0°C | 103 mm | 86% | 4.4 m/s | 2.6 |
| 2021 | 16.4°C | 14.3°C | 12.2°C | 19.8°C | 8.5°C | 64 mm | 87% | 3.4 m/s | 2.6 |
| 2020 | 14.6°C | 12.4°C | 10.2°C | 17.6°C | 6.0°C | 48 mm | 85% | 4.6 m/s | 2.7 |
| 2019 | 14.6°C | 12.5°C | 10.3°C | 17.0°C | 8.0°C | 71 mm | 87% | 4.2 m/s | 2.7 |
| 2018 | 14.4°C | 12.0°C | 9.6°C | 18.4°C | 6.6°C | 71 mm | 84% | 5.5 m/s | 2.6 |
| 2017 | 14.6°C | 12.6°C | 10.6°C | 16.2°C | 8.6°C | 92 mm | 88% | 4.2 m/s | 2.3 |
| 2016 | 15.8°C | 13.7°C | 11.6°C | 18.9°C | 9.4°C | 71 mm | 88% | 4.5 m/s | 2.5 |
| 2015 | 14.2°C | 12.0°C | 9.7°C | 16.1°C | 8.1°C | 41 mm | 88% | 3.7 m/s | 2.6 |
| 2014 | 15.2°C | 13.2°C | 11.2°C | 16.7°C | 9.4°C | 30 mm | 88% | 2.9 m/s | 2.4 |
| 2013 | 14.4°C | 12.3°C | 10.3°C | 19.0°C | 7.6°C | 36 mm | 85% | 4.2 m/s | 2.6 |
| 2012 | 13.6°C | 11.4°C | 9.3°C | 17.0°C | 6.0°C | 56 mm | 86% | 5.5 m/s | 2.7 |
| 2011 | 14.8°C | 12.8°C | 10.8°C | 18.7°C | 7.6°C | 94 mm | 88% | 5 m/s | 2.5 |
| 2010 | 14.2°C | 12.4°C | 10.5°C | 17.2°C | 6.8°C | 87 mm | 88% | 4.9 m/s | 2.5 |
| 2009 | 15.0°C | 12.9°C | 10.7°C | 17.9°C | 8.5°C | 91 mm | 86% | 4.5 m/s | 2.7 |
| 2008 | 14.4°C | 12.7°C | 11.0°C | 16.5°C | 8.4°C | 73 mm | 88% | 4.2 m/s | 2.3 |
| 2007 | 14.4°C | 11.9°C | 9.5°C | 18.8°C | 4.8°C | 30 mm | 85% | 4.6 m/s | 2.6 |
| 2006 🔥 | 16.4°C | 14.3°C | 12.2°C | 18.5°C | 9.0°C | 90 mm | 89% | 3.5 m/s | 2.6 |
| 2005 | 15.2°C | 13.0°C | 10.7°C | 18.6°C | 7.2°C | 46 mm | 86% | 4.8 m/s | 2.5 |
| 2004 | 14.8°C | 12.8°C | 10.8°C | 18.4°C | 8.4°C | 46 mm | 86% | 5.2 m/s | 2.7 |
| 2003 | 15.5°C | 13.1°C | 10.7°C | 18.5°C | 6.5°C | 60 mm | 85% | 3.5 m/s | 2.7 |
| 2002 | 15.1°C | 13.0°C | 10.9°C | 16.8°C | 8.6°C | 28 mm | 88% | 2.9 m/s | 2.5 |
| 2001 | 14.0°C | 11.9°C | 9.7°C | 16.5°C | 7.9°C | 66 mm | 87% | 4.8 m/s | 2.3 |
| 2000 | 14.4°C | 12.5°C | 10.6°C | 17.3°C | 8.4°C | 141 mm | 90% | 4.3 m/s | 2 |
| 1999 | 15.8°C | 13.6°C | 11.4°C | 19.6°C | 8.8°C | 89 mm | 90% | 4.1 m/s | 2.4 |
| 1998 | 14.4°C | 12.7°C | 11.1°C | 18.7°C | 7.9°C | 79 mm | 91% | 4 m/s | 2.5 |
| 1997 | 14.2°C | 12.0°C | 9.8°C | 16.6°C | 7.2°C | 41 mm | 86% | 4.2 m/s | 2.9 |
| 1996 | 14.6°C | 12.6°C | 10.6°C | 20.3°C | 8.7°C | 41 mm | 85% | 4.3 m/s | 2.9 |
| 1995 🌧️ | 14.4°C | 12.2°C | 10.0°C | 16.5°C | 5.3°C | 151 mm | 88% | 3.9 m/s | 2.4 |
| 1994 | 13.7°C | 11.5°C | 9.3°C | 16.7°C | 6.6°C | 47 mm | 84% | 4.5 m/s | 2.6 |
| 1993 | 12.9°C | 11.0°C | 9.1°C | 18.0°C | 6.0°C | 47 mm | 86% | 4.2 m/s | 2.3 |
| 1992 | 13.3°C | 11.4°C | 9.5°C | 15.5°C | 7.5°C | 117 mm | 88% | 5 m/s | 2.4 |
| 1991 | 14.9°C | 12.4°C | 9.9°C | 19.6°C | 4.9°C | 45 mm | 83% | 4.2 m/s | 3 |
| 1990 | 14.1°C | 11.8°C | 9.4°C | 18.5°C | 6.1°C | 58 mm | 82% | 4.8 m/s | 2.6 |
| 1989 | 14.6°C | 12.1°C | 9.7°C | 17.1°C | 7.5°C | 37 mm | 84% | 4.2 m/s | 2.4 |
| 1988 | 14.2°C | 12.0°C | 9.7°C | 17.4°C | 4.6°C | 77 mm | 86% | 5 m/s | 2.4 |
| 1987 | 13.6°C | 11.5°C | 9.5°C | 16.6°C | 5.7°C | 57 mm | 85% | 5.1 m/s | 2.7 |
| 1986 ❄️ | 13.3°C | 10.7°C | 8.1°C | 16.4°C | 4.6°C | 24 mm | 83% | 4.5 m/s | 2.7 |
| 1985 | 13.6°C | 11.5°C | 9.5°C | 17.1°C | 5.9°C | 117 mm | 88% | 4.3 m/s | 2.2 |
| 1984 | 13.8°C | 11.7°C | 9.7°C | 16.1°C | 7.2°C | 105 mm | 83% | 4.1 m/s | 2.3 |
| 1983 | 13.8°C | 11.7°C | 9.7°C | 17.1°C | 6.3°C | 92 mm | 84% | 5.7 m/s | — |
| 1982 | 14.3°C | 11.9°C | 9.5°C | 18.2°C | 5.7°C | 109 mm | 85% | 5.4 m/s | — |
| 1981 | 15.1°C | 12.9°C | 10.7°C | 18.7°C | 8.8°C | 115 mm | 85% | 4.7 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 14.6°C with lows near 10.3°C (mean 12.5°C), based on 45 years of NASA POWER data.
September averages 70 mm of rainfall in Saint Andrews, about average for rainfall. The wettest on record was 151 mm in 1995.
The hottest September reached 21°C in 2023. The coldest dipped to 4.6°C in 1986.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 1.5°C. Daytime highs moved from 14.1°C to 15.6°C and overnight lows from 9.8°C to 11.2°C over the same span.
September is one of the warmer months of the year in Saint Andrews and about average for rainfall, so plan for around 14.6°C daytime highs and 10.3°C at night.
Not quite — September is the 10th coolest month in Saint Andrews, averaging 12.5°C.
For September in Saint Andrews, pack light layers you can adjust through the day, with typical highs of 14.6°C and lows of 10.3°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 86% — quite humid.
Average wind speed in September is 4.4 m/s. The windiest September on record averaged 5.7 m/s (1983).
The wettest September on record was 1995 with 151 mm. On average, September sees 70 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 Saint Andrews 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.
