September is one of the warmer months of the year in Kingston, with average highs near 22°C and lows around 11.1°C (mean 16.6°C). It is about average for rainfall, averaging 71 mm of rainfall and 74% relative humidity across the period.
September is one of the warmer months of the year in Kingston. Across 45 years of records, the warmest September in Kingston was 2015 — when the month averaged 19.7°C — while the coldest was 1995 at 13.4°C. Typical September days reach 22°C with nights near 11.1°C. The long-term trend is warming, about 0.9°C per decade.
September is about average for rainfall in Kingston, averaging 71 mm of rainfall. The wettest September on record was 1981 with 173 mm, while the driest was 2023 at 24 mm.
Relative humidity in Kingston during September averages 74%. The most humid September was 1981 at 83%, and the least humid was 2016 at 68%.
September receives about 4 kWh/m²/day of solar energy in Kingston. The sunniest Septembers were 2016, 2017 and 2023, among others at 4.5 kWh/m²/day, and the cloudiest were 1986 and 2006 at 3.3.
Average wind speed in Kingston during September is 0.5 m/s. The windiest Septembers were 2023, 2024 and 2025, among others at 0.5 m/s, while the calmest were 2004, 2008 and 2011, among others at 0.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 15.3°C | 15.2°C | 17.0°C | 17.8°C | 17.8°C | +2.5°C |
| Avg High | 20.5°C | 20.4°C | 22.6°C | 23.4°C | 23.5°C | +3°C |
| Avg Low | 10.1°C | 9.9°C | 11.4°C | 12.1°C | 12.2°C | +2.1°C |
| Avg Rain | 93 mm | 85 mm | 68 mm | 59 mm | 43 mm | -50 mm |
September temperatures in Kingston have risen by about 2.8°C between 1981–1985 and 2021–2025.
September has ranged from a record low of -1.5°C (1991) to a record high of 33.9°C (2023).
Rainfall in September is about average for rainfall, averaging 71 mm, with a wettest year of 173 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 1.1°C per decade while lows rose 0.7°C per decade, widening the gap between day and night.
One of the best times to visit Kingston
September is one of the best times to visit Kingston. Expect days averaging 22°C and nights around 11.1°C (mean 16.6°C) — warmer than Kingston's yearly average — with moderate rainfall (71 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 | 24.1°C | 18.0°C | 12.0°C | 27.7°C | 5.6°C | 44 mm | 68% | 0.5 m/s | 4.4 |
| 2024 | 24.5°C | 18.9°C | 13.2°C | 29.0°C | 6.9°C | 47 mm | 74% | 0.5 m/s | 4.3 |
| 2023 | 25.0°C | 18.7°C | 12.5°C | 33.9°C | 6.5°C | 24 mm | 70% | 0.5 m/s | 4.5 |
| 2022 | 22.5°C | 17.0°C | 11.6°C | 29.4°C | 3.9°C | 65 mm | 73% | 0.5 m/s | 3.6 |
| 2021 | 23.5°C | 18.1°C | 12.8°C | 27.7°C | 6.7°C | 47 mm | 69% | 0.5 m/s | 3.8 |
| 2020 | 21.6°C | 16.2°C | 10.8°C | 27.5°C | 2.4°C | 29 mm | 72% | 0.5 m/s | 3.9 |
| 2019 | 22.9°C | 17.1°C | 11.3°C | 27.5°C | 7.0°C | 59 mm | 73% | 0.5 m/s | 4.1 |
| 2018 | 24.3°C | 18.8°C | 13.3°C | 32.1°C | 5.7°C | 50 mm | 73% | 0.5 m/s | 4 |
| 2017 | 24.2°C | 18.5°C | 12.7°C | 32.7°C | 6.5°C | 52 mm | 75% | 0.5 m/s | 4.5 |
| 2016 | 24.7°C | 18.7°C | 12.8°C | 30.8°C | 4.2°C | 53 mm | 68% | 0.5 m/s | 4.5 |
| 2015 🔥 | 25.5°C | 19.7°C | 14.0°C | 31.9°C | 8.1°C | 65 mm | 71% | 0.5 m/s | 4.2 |
| 2014 | 22.9°C | 16.9°C | 10.8°C | 28.6°C | 1.3°C | 47 mm | 73% | 0.5 m/s | 4.1 |
| 2013 | 21.7°C | 15.9°C | 10.0°C | 31.0°C | 3.1°C | 55 mm | 71% | 0.5 m/s | 4.2 |
| 2012 | 22.5°C | 17.1°C | 11.7°C | 29.7°C | 5.4°C | 66 mm | 68% | 0.5 m/s | 4 |
| 2011 | 23.8°C | 18.2°C | 12.7°C | 32.2°C | 4.7°C | 59 mm | 75% | 0.4 m/s | 3.9 |
| 2010 | 21.8°C | 17.0°C | 12.1°C | 31.7°C | 6.2°C | 81 mm | 73% | 0.5 m/s | 3.5 |
| 2009 | 22.1°C | 16.2°C | 10.3°C | 27.7°C | 3.9°C | 44 mm | 72% | 0.5 m/s | 4.4 |
| 2008 | 23.0°C | 17.1°C | 11.1°C | 32.0°C | 3.8°C | 54 mm | 76% | 0.4 m/s | 3.9 |
| 2007 | 24.0°C | 18.0°C | 11.9°C | 31.2°C | 4.9°C | 38 mm | 68% | 0.5 m/s | 4.5 |
| 2006 | 20.5°C | 15.4°C | 10.3°C | 26.1°C | 4.2°C | 99 mm | 77% | 0.5 m/s | 3.3 |
| 2005 | 24.0°C | 18.4°C | 12.7°C | 30.7°C | 5.8°C | 94 mm | 72% | 0.5 m/s | 4.4 |
| 2004 | 23.4°C | 17.8°C | 12.2°C | 27.9°C | 5.1°C | 88 mm | 76% | 0.4 m/s | 4.4 |
| 2003 | 23.0°C | 17.6°C | 12.1°C | 29.6°C | 6.3°C | 56 mm | 72% | 0.4 m/s | 4.1 |
| 2002 | 24.7°C | 18.7°C | 12.7°C | 33.8°C | 5.9°C | 54 mm | 68% | 0.4 m/s | 4.3 |
| 2001 | 21.9°C | 16.4°C | 11.0°C | 29.8°C | 3.7°C | 64 mm | 71% | 0.4 m/s | 4.3 |
| 2000 | 19.7°C | 14.5°C | 9.3°C | 28.7°C | -0.1°C | 92 mm | 79% | 0.5 m/s | 4.1 |
| 1999 | 23.2°C | 17.8°C | 12.4°C | 33.1°C | 5.1°C | 117 mm | 74% | 0.5 m/s | 3.8 |
| 1998 | 21.9°C | 16.7°C | 11.4°C | 28.4°C | 5.2°C | 80 mm | 76% | 0.5 m/s | 4.2 |
| 1997 | 20.7°C | 15.4°C | 10.0°C | 27.4°C | 1.5°C | 71 mm | 73% | 0.5 m/s | 3.6 |
| 1996 | 20.6°C | 16.1°C | 11.7°C | 28.0°C | 4.7°C | 110 mm | 81% | 0.4 m/s | 3.6 |
| 1995 ❄️ | 19.1°C | 13.4°C | 7.7°C | 26.3°C | 2.8°C | 83 mm | 74% | 0.4 m/s | 4 |
| 1994 | 20.9°C | 15.3°C | 9.7°C | 26.9°C | 4.2°C | 62 mm | 76% | 0.4 m/s | 4 |
| 1993 | 19.0°C | 14.0°C | 9.0°C | 26.8°C | 0.5°C | 97 mm | 77% | 0.5 m/s | 3.4 |
| 1992 | 19.5°C | 14.4°C | 9.3°C | 25.1°C | 1.0°C | 101 mm | 80% | 0.4 m/s | 3.8 |
| 1991 | 20.0°C | 14.4°C | 8.9°C | 27.3°C | -1.5°C | 65 mm | 70% | 0.4 m/s | 4 |
| 1990 | 19.6°C | 14.4°C | 9.2°C | 25.7°C | 1.9°C | 62 mm | 77% | 0.4 m/s | 3.4 |
| 1989 | 21.4°C | 16.0°C | 10.6°C | 28.1°C | -0.1°C | 76 mm | 74% | 0.4 m/s | 3.8 |
| 1988 | 21.0°C | 15.4°C | 9.8°C | 26.4°C | 2.5°C | 63 mm | 71% | 0.4 m/s | 4.2 |
| 1987 | 20.1°C | 15.3°C | 10.6°C | 25.3°C | 2.4°C | 123 mm | 78% | 0.4 m/s | 3.8 |
| 1986 | 19.1°C | 14.3°C | 9.4°C | 25.3°C | 3.1°C | 149 mm | 79% | 0.5 m/s | 3.3 |
| 1985 | 21.8°C | 16.1°C | 10.4°C | 27.8°C | 4.2°C | 74 mm | 76% | 0.4 m/s | 4.1 |
| 1984 | 19.4°C | 14.0°C | 8.7°C | 24.4°C | 2.3°C | 43 mm | 76% | 0.5 m/s | 4.2 |
| 1983 | 22.8°C | 17.3°C | 11.7°C | 30.3°C | 5.0°C | 53 mm | 69% | 0.5 m/s | — |
| 1982 | 20.0°C | 14.8°C | 9.6°C | 27.0°C | 4.1°C | 79 mm | 80% | 0.4 m/s | — |
| 1981 🌧️ | 18.5°C | 14.2°C | 9.9°C | 26.1°C | -0.8°C | 173 mm | 83% | 0.5 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 22°C with lows near 11.1°C (mean 16.6°C), based on 45 years of NASA POWER data.
September averages 71 mm of rainfall in Kingston, about average for rainfall. The wettest on record was 173 mm in 1981.
The hottest September reached 33.9°C in 2023. The coldest dipped to -1.5°C in 1991.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have risen by about 2.8°C. Daytime highs moved from 20.5°C to 23.9°C and overnight lows from 10.1°C to 12.4°C over the same span.
September is one of the warmer months of the year in Kingston and about average for rainfall, so plan for around 22°C daytime highs and 11.1°C at night.
Not quite — September is the 9th coolest month in Kingston, averaging 16.6°C.
For September in Kingston, pack light layers you can adjust through the day, with typical highs of 22°C and lows of 11.1°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 74% — moderately humid.
Average wind speed in September is 0.5 m/s. The windiest September on record averaged 0.5 m/s (1981).
The wettest September on record was 1981 with 173 mm. On average, September sees 71 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 Kingston 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.
