September is one of the warmer months of the year in Aberdeen, with average highs near 13.9°C and lows around 11.5°C (mean 12.7°C). It is about average for rainfall, averaging 70 mm of rainfall and 85% relative humidity across the period.
September is one of the warmer months of the year in Aberdeen. Across 45 years of records, the warmest Septembers in Aberdeen were 2006 and 2023 — when the month averaged 14.3°C — while the coldest was 1986 at 11.3°C. Typical September days reach 13.9°C with nights near 11.5°C. The long-term trend is warming, about 0.3°C per decade.
September is about average for rainfall in Aberdeen, averaging 70 mm of rainfall. The wettest September on record was 1995 with 174 mm, while the driest was 1986 at 28 mm.
Relative humidity in Aberdeen during September averages 85%. The most humid September was 1999 at 90%, and the least humid was 1986 at 80%.
September receives about 2.5 kWh/m²/day of solar energy in Aberdeen. The sunniest Septembers were 1997 and 2023 at 2.9 kWh/m²/day, and the cloudiest were 1995, 2000 and 2001 at 2.
Average wind speed in Aberdeen during September is 5.2 m/s. The windiest September was 1983 at 6.5 m/s, while the calmest were 2002 and 2014 at 3.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 12.1°C | 12.4°C | 13.1°C | 12.8°C | 13.4°C | +1.3°C |
| Avg High | 13.5°C | 13.5°C | 14.3°C | 14.0°C | 14.6°C | +1.1°C |
| Avg Low | 10.8°C | 11.2°C | 11.9°C | 11.7°C | 12.3°C | +1.5°C |
| Avg Rain | 81 mm | 76 mm | 68 mm | 65 mm | 56 mm | -25 mm |
September temperatures in Aberdeen have risen by about 1.4°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 7.1°C (1986) to a record high of 19.8°C (1991).
Rainfall in September is about average for rainfall, averaging 70 mm, with a wettest year of 174 mm.
One of the best times to visit Aberdeen
September is one of the best times to visit Aberdeen. Expect days averaging 13.9°C and nights around 11.5°C (mean 12.7°C) — warmer than Aberdeen'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 | 14.9°C | 13.8°C | 12.7°C | 16.7°C | 9.3°C | 51 mm | 84% | 5.7 m/s | 2.8 |
| 2024 | 13.4°C | 12.3°C | 11.1°C | 16.4°C | 8.2°C | 32 mm | 86% | 4.5 m/s | 2.5 |
| 2023 | 15.7°C | 14.3°C | 12.9°C | 19.5°C | 9.9°C | 53 mm | 85% | 4.9 m/s | 2.9 |
| 2022 | 14.6°C | 13.5°C | 12.4°C | 16.9°C | 8.5°C | 98 mm | 86% | 5.3 m/s | 2.5 |
| 2021 | 15.2°C | 14.0°C | 12.9°C | 18.3°C | 10.0°C | 60 mm | 87% | 4 m/s | 2.5 |
| 2020 | 14.0°C | 12.7°C | 11.5°C | 16.8°C | 9.5°C | 42 mm | 84% | 5.4 m/s | 2.5 |
| 2019 | 13.9°C | 12.7°C | 11.6°C | 15.6°C | 9.8°C | 81 mm | 85% | 5.1 m/s | 2.6 |
| 2018 | 14.2°C | 12.7°C | 11.1°C | 16.3°C | 7.7°C | 68 mm | 81% | 6.4 m/s | 2.6 |
| 2017 | 14.0°C | 13.0°C | 12.1°C | 15.6°C | 10.6°C | 81 mm | 87% | 5.3 m/s | 2.3 |
| 2016 | 15.0°C | 13.8°C | 12.5°C | 18.0°C | 10.3°C | 59 mm | 88% | 5.3 m/s | 2.6 |
| 2015 | 13.3°C | 12.3°C | 11.2°C | 14.7°C | 10.1°C | 46 mm | 87% | 4.8 m/s | 2.6 |
| 2014 | 14.3°C | 13.3°C | 12.3°C | 16.2°C | 11.1°C | 38 mm | 88% | 3.8 m/s | 2.4 |
| 2013 | 13.9°C | 12.8°C | 11.6°C | 18.4°C | 9.0°C | 45 mm | 83% | 4.8 m/s | 2.6 |
| 2012 | 13.4°C | 12.0°C | 10.7°C | 16.5°C | 8.3°C | 71 mm | 82% | 5.9 m/s | 2.6 |
| 2011 | 14.2°C | 13.1°C | 12.0°C | 16.4°C | 9.9°C | 86 mm | 87% | 5.8 m/s | 2.4 |
| 2010 | 13.6°C | 12.6°C | 11.6°C | 16.4°C | 9.2°C | 70 mm | 86% | 5.9 m/s | 2.4 |
| 2009 | 14.6°C | 13.3°C | 12.0°C | 17.0°C | 9.3°C | 77 mm | 84% | 5 m/s | 2.6 |
| 2008 | 14.1°C | 13.2°C | 12.3°C | 15.9°C | 10.3°C | 66 mm | 86% | 4.9 m/s | 2.4 |
| 2007 | 13.9°C | 12.4°C | 10.9°C | 18.1°C | 7.1°C | 50 mm | 83% | 5.3 m/s | 2.3 |
| 2006 🔥 | 15.3°C | 14.3°C | 13.2°C | 16.8°C | 11.2°C | 78 mm | 89% | 4.2 m/s | 2.7 |
| 2005 | 14.5°C | 13.2°C | 11.8°C | 17.5°C | 9.5°C | 49 mm | 85% | 5.5 m/s | 2.5 |
| 2004 | 14.4°C | 13.1°C | 11.8°C | 17.8°C | 9.8°C | 51 mm | 85% | 6.1 m/s | 2.8 |
| 2003 | 15.0°C | 13.6°C | 12.1°C | 17.6°C | 8.2°C | 67 mm | 83% | 4.2 m/s | 2.8 |
| 2002 | 14.4°C | 13.4°C | 12.3°C | 15.8°C | 10.6°C | 32 mm | 87% | 3.8 m/s | 2.5 |
| 2001 | 13.2°C | 12.0°C | 10.9°C | 15.8°C | 9.6°C | 73 mm | 87% | 5.6 m/s | 2 |
| 2000 | 13.6°C | 12.6°C | 11.7°C | 16.2°C | 10.2°C | 133 mm | 90% | 5.1 m/s | 2 |
| 1999 | 14.5°C | 13.5°C | 12.4°C | 17.2°C | 10.2°C | 86 mm | 90% | 4.7 m/s | 2.4 |
| 1998 | 13.5°C | 12.7°C | 11.9°C | 15.5°C | 9.8°C | 75 mm | 90% | 4.8 m/s | 2.5 |
| 1997 | 13.6°C | 12.3°C | 11.0°C | 15.2°C | 8.3°C | 40 mm | 85% | 4.8 m/s | 2.9 |
| 1996 | 13.7°C | 12.7°C | 11.7°C | 19.3°C | 10.5°C | 39 mm | 86% | 5.1 m/s | 2.7 |
| 1995 🌧️ | 13.8°C | 12.7°C | 11.5°C | 15.9°C | 7.7°C | 174 mm | 88% | 4.8 m/s | 2 |
| 1994 | 13.1°C | 11.9°C | 10.7°C | 15.7°C | 8.5°C | 59 mm | 84% | 5 m/s | 2.5 |
| 1993 | 12.3°C | 11.4°C | 10.5°C | 16.4°C | 8.6°C | 45 mm | 85% | 5 m/s | 2.4 |
| 1992 | 12.8°C | 11.8°C | 10.8°C | 14.9°C | 9.1°C | 125 mm | 87% | 6 m/s | 2.4 |
| 1991 | 14.2°C | 12.6°C | 11.0°C | 19.8°C | 7.2°C | 32 mm | 81% | 4.9 m/s | 2.8 |
| 1990 | 13.5°C | 12.1°C | 10.6°C | 18.0°C | 7.3°C | 85 mm | 82% | 5.4 m/s | 2.5 |
| 1989 | 13.9°C | 12.5°C | 11.1°C | 16.8°C | 9.5°C | 41 mm | 83% | 4.9 m/s | 2.4 |
| 1988 | 13.7°C | 12.4°C | 11.1°C | 15.8°C | 7.3°C | 86 mm | 85% | 5.8 m/s | 2.5 |
| 1987 | 13.2°C | 11.9°C | 10.6°C | 16.1°C | 8.1°C | 49 mm | 84% | 5.8 m/s | 2.8 |
| 1986 ❄️ | 12.8°C | 11.3°C | 9.7°C | 15.5°C | 7.1°C | 28 mm | 80% | 5.1 m/s | 2.5 |
| 1985 | 12.8°C | 11.5°C | 10.3°C | 15.4°C | 7.4°C | 106 mm | 86% | 4.9 m/s | 2.5 |
| 1984 | 13.1°C | 12.0°C | 10.9°C | 14.7°C | 8.3°C | 116 mm | 83% | 5 m/s | 2.2 |
| 1983 | 13.3°C | 12.0°C | 10.7°C | 16.2°C | 8.7°C | 95 mm | 83% | 6.5 m/s | — |
| 1982 | 14.0°C | 12.4°C | 10.7°C | 16.7°C | 8.1°C | 101 mm | 84% | 6.2 m/s | — |
| 1981 | 14.5°C | 13.2°C | 12.0°C | 16.9°C | 10.2°C | 105 mm | 86% | 5.7 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 13.9°C with lows near 11.5°C (mean 12.7°C), based on 45 years of NASA POWER data.
September averages 70 mm of rainfall in Aberdeen, about average for rainfall. The wettest on record was 174 mm in 1995.
The hottest September reached 19.8°C in 1991. The coldest dipped to 7.1°C in 1986.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 1.4°C. Daytime highs moved from 13.5°C to 14.8°C and overnight lows from 10.9°C to 12.4°C over the same span.
September is one of the warmer months of the year in Aberdeen and about average for rainfall, so plan for around 13.9°C daytime highs and 11.5°C at night.
Not quite — September is the 10th coolest month in Aberdeen, averaging 12.7°C.
For September in Aberdeen, pack light layers you can adjust through the day, with typical highs of 13.9°C and lows of 11.5°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 85% — quite humid.
Average wind speed in September is 5.2 m/s. The windiest September on record averaged 6.5 m/s (1983).
The wettest September on record was 1995 with 174 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 Aberdeen 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.
