August is one of the warmer months of the year in Syracuse, with average highs near 27.1°C and lows around 15.8°C (mean 21.5°C). It is about average for rainfall, averaging 99 mm of rainfall and 71% relative humidity across the period.
August is one of the warmer months of the year in Syracuse. Across 45 years of records, the warmest August in Syracuse was 2016 — when the month averaged 24.1°C — while the coldest was 1992 at 18.8°C. Typical August days reach 27.1°C with nights near 15.8°C. The long-term trend is warming, about 0.3°C per decade.
August is about average for rainfall in Syracuse, averaging 99 mm of rainfall. The wettest August on record was 2024 with 179 mm, while the driest was 1999 at 52 mm.
Relative humidity in Syracuse during August averages 71%. The most humid August was 2004 at 80%, and the least humid was 2002 at 63%.
August receives about 5.2 kWh/m²/day of solar energy in Syracuse. The sunniest Augusts were 2020 and 2025 at 5.7 kWh/m²/day, and the cloudiest was 2024 at 4.7.
Average wind speed in Syracuse during August is 0.4 m/s. The windiest Augusts were 2023, 2024 and 2025, among others at 0.4 m/s, while the calmest were 2023, 2024 and 2025, 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 | 20.7°C | 21.1°C | 21.7°C | 21.8°C | 22.1°C | +1.4°C |
| Avg High | 26.6°C | 27.0°C | 27.3°C | 27.3°C | 27.5°C | +0.9°C |
| Avg Low | 14.9°C | 15.3°C | 16.1°C | 16.2°C | 16.6°C | +1.7°C |
| Avg Rain | 88 mm | 87 mm | 99 mm | 103 mm | 129 mm | +41 mm |
August temperatures in Syracuse have risen by about 1.1°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 5.1°C (1982) to a record high of 36.9°C (1988).
Rainfall in August is about average for rainfall, averaging 99 mm, with a wettest year of 179 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.2°C per decade while lows rose 0.4°C per decade, narrowing the gap between day and night.
One of the best times to visit Syracuse
August is one of the best times to visit Syracuse. Expect days averaging 27.1°C and nights around 15.8°C (mean 21.5°C) — warmer than Syracuse's yearly average — with higher rainfall (99 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 | 28.1°C | 21.6°C | 15.2°C | 36.4°C | 8.8°C | 66 mm | 64% | 0.4 m/s | 5.7 |
| 2024 🌧️ | 26.3°C | 21.2°C | 16.1°C | 33.5°C | 10.8°C | 179 mm | 77% | 0.4 m/s | 4.7 |
| 2023 | 25.5°C | 20.5°C | 15.5°C | 31.2°C | 9.8°C | 148 mm | 76% | 0.4 m/s | 5 |
| 2022 | 28.5°C | 22.9°C | 17.4°C | 34.4°C | 12.8°C | 126 mm | 70% | 0.4 m/s | 5.4 |
| 2021 | 28.4°C | 23.4°C | 18.4°C | 33.8°C | 11.3°C | 164 mm | 77% | 0.4 m/s | 5.3 |
| 2020 | 28.4°C | 22.7°C | 17.0°C | 33.2°C | 11.3°C | 92 mm | 70% | 0.4 m/s | 5.7 |
| 2019 | 26.7°C | 21.4°C | 16.1°C | 32.1°C | 11.2°C | 113 mm | 75% | 0.4 m/s | 5.5 |
| 2018 | 28.0°C | 23.1°C | 18.2°C | 34.6°C | 12.1°C | 115 mm | 78% | 0.4 m/s | 4.8 |
| 2017 | 26.2°C | 20.6°C | 15.1°C | 31.7°C | 8.7°C | 71 mm | 72% | 0.4 m/s | 5.5 |
| 2016 🔥 | 30.0°C | 24.1°C | 18.3°C | 35.4°C | 12.3°C | 109 mm | 68% | 0.4 m/s | 5.6 |
| 2015 | 27.3°C | 21.4°C | 15.5°C | 33.3°C | 11.3°C | 59 mm | 70% | 0.4 m/s | 5.3 |
| 2014 | 25.5°C | 20.1°C | 14.7°C | 31.1°C | 9.6°C | 118 mm | 75% | 0.4 m/s | 5.1 |
| 2013 | 25.7°C | 20.4°C | 15.0°C | 30.5°C | 10.1°C | 112 mm | 73% | 0.4 m/s | 5.4 |
| 2012 | 28.9°C | 22.6°C | 16.4°C | 34.7°C | 11.2°C | 74 mm | 64% | 0.4 m/s | 5.6 |
| 2011 | 27.0°C | 21.6°C | 16.3°C | 32.1°C | 11.0°C | 149 mm | 73% | 0.4 m/s | 5 |
| 2010 | 27.9°C | 22.3°C | 16.7°C | 33.5°C | 11.7°C | 112 mm | 70% | 0.4 m/s | 5.1 |
| 2009 | 26.9°C | 21.7°C | 16.4°C | 34.2°C | 9.7°C | 128 mm | 75% | 0.4 m/s | 5 |
| 2008 | 25.1°C | 19.8°C | 14.6°C | 30.9°C | 9.3°C | 100 mm | 75% | 0.4 m/s | 5.5 |
| 2007 | 28.2°C | 22.1°C | 16.0°C | 35.7°C | 10.2°C | 56 mm | 69% | 0.4 m/s | 5.2 |
| 2006 | 25.7°C | 20.7°C | 15.8°C | 33.4°C | 8.9°C | 103 mm | 75% | 0.4 m/s | 5.4 |
| 2005 | 29.7°C | 23.7°C | 17.7°C | 35.5°C | 11.9°C | 129 mm | 66% | 0.4 m/s | 5.2 |
| 2004 | 24.9°C | 20.1°C | 15.3°C | 29.6°C | 9.5°C | 142 mm | 80% | 0.4 m/s | 4.8 |
| 2003 | 27.7°C | 22.2°C | 16.7°C | 32.9°C | 9.9°C | 94 mm | 74% | 0.4 m/s | 5 |
| 2002 | 29.3°C | 22.8°C | 16.4°C | 36.0°C | 11.4°C | 58 mm | 63% | 0.4 m/s | 5.6 |
| 2001 | 29.6°C | 23.4°C | 17.2°C | 34.9°C | 10.8°C | 96 mm | 65% | 0.4 m/s | 5.3 |
| 2000 | 25.8°C | 20.5°C | 15.1°C | 32.1°C | 8.7°C | 82 mm | 73% | 0.4 m/s | 5.3 |
| 1999 | 26.9°C | 20.9°C | 15.0°C | 32.5°C | 8.8°C | 52 mm | 66% | 0.4 m/s | 4.8 |
| 1998 | 27.7°C | 22.1°C | 16.6°C | 32.0°C | 9.0°C | 87 mm | 70% | 0.4 m/s | 5.1 |
| 1997 | 26.1°C | 20.3°C | 14.4°C | 32.7°C | 10.0°C | 76 mm | 68% | 0.4 m/s | 5 |
| 1996 | 27.3°C | 21.2°C | 15.1°C | 32.5°C | 10.1°C | 70 mm | 70% | 0.4 m/s | 5.6 |
| 1995 | 29.6°C | 23.0°C | 16.3°C | 35.0°C | 8.7°C | 69 mm | 63% | 0.4 m/s | 5 |
| 1994 | 25.3°C | 19.7°C | 14.1°C | 30.1°C | 7.6°C | 142 mm | 73% | 0.4 m/s | 5.2 |
| 1993 | 28.1°C | 22.2°C | 16.2°C | 34.3°C | 8.5°C | 83 mm | 69% | 0.4 m/s | 5.2 |
| 1992 ❄️ | 24.0°C | 18.8°C | 13.7°C | 31.3°C | 8.4°C | 103 mm | 77% | 0.4 m/s | 5.1 |
| 1991 | 27.4°C | 21.6°C | 15.8°C | 33.9°C | 11.8°C | 106 mm | 69% | 0.4 m/s | 5 |
| 1990 | 27.2°C | 21.5°C | 15.7°C | 32.7°C | 11.7°C | 82 mm | 72% | 0.4 m/s | 4.8 |
| 1989 | 26.1°C | 20.2°C | 14.3°C | 31.4°C | 7.3°C | 80 mm | 70% | 0.4 m/s | 4.9 |
| 1988 | 28.6°C | 22.6°C | 16.6°C | 36.9°C | 8.9°C | 104 mm | 65% | 0.4 m/s | 4.8 |
| 1987 | 26.3°C | 20.3°C | 14.3°C | 35.1°C | 9.2°C | 81 mm | 67% | 0.4 m/s | 4.9 |
| 1986 | 24.7°C | 19.4°C | 14.1°C | 30.2°C | 6.5°C | 94 mm | 73% | 0.4 m/s | 5.3 |
| 1985 | 26.9°C | 20.7°C | 14.5°C | 32.6°C | 10.0°C | 55 mm | 66% | 0.4 m/s | 5 |
| 1984 | 27.0°C | 21.7°C | 16.4°C | 31.5°C | 8.8°C | 139 mm | 74% | 0.4 m/s | 5.3 |
| 1983 | 27.7°C | 21.7°C | 15.7°C | 33.8°C | 10.1°C | 93 mm | 69% | 0.4 m/s | — |
| 1982 | 25.1°C | 19.0°C | 13.0°C | 32.0°C | 5.1°C | 61 mm | 66% | 0.4 m/s | — |
| 1981 | 26.6°C | 20.8°C | 15.0°C | 30.5°C | 8.9°C | 84 mm | 70% | 0.4 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 27.1°C with lows near 15.8°C (mean 21.5°C), based on 45 years of NASA POWER data.
August averages 99 mm of rainfall in Syracuse, about average for rainfall. The wettest on record was 179 mm in 2024.
The hottest August reached 36.9°C in 1988. The coldest dipped to 5.1°C in 1982.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 1.1°C. Daytime highs moved from 26.7°C to 27.4°C and overnight lows from 14.9°C to 16.5°C over the same span.
August is one of the warmer months of the year in Syracuse and about average for rainfall, so plan for around 27.1°C daytime highs and 15.8°C at night.
Not quite — August is the 11th coolest month in Syracuse, averaging 21.5°C.
For August in Syracuse, pack light layers you can adjust through the day, with typical highs of 27.1°C and lows of 15.8°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 71% — moderately humid.
Average wind speed in August is 0.4 m/s. The windiest August on record averaged 0.4 m/s (1981).
The wettest August on record was 2024 with 179 mm. On average, August sees 99 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 Syracuse behaves each August, 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 August specifically, along with year-by-year records and how the month has changed over the decades.
