August is one of the warmer months of the year in Dungannon, with average highs near 17.8°C and lows around 10.5°C (mean 14.2°C). It is a relatively wet time of year, averaging 102 mm of rainfall and 87% relative humidity across the period.
August is one of the warmer months of the year in Dungannon. Across 45 years of records, the warmest August in Dungannon was 1995 — when the month averaged 16.8°C — while the coldest was 1986 at 11.3°C. Typical August days reach 17.8°C with nights near 10.5°C. The long-term trend is warming, about 0.2°C per decade.
August is a relatively wet time of year in Dungannon, averaging 102 mm of rainfall. The wettest August on record was 2008 with 195 mm, while the driest was 1995 at 20 mm.
Relative humidity in Dungannon during August averages 87%. The most humid August was 2008 at 89%, and the least humid was 2022 at 83%.
August receives about 3.6 kWh/m²/day of solar energy in Dungannon. The sunniest August was 1995 at 4.6 kWh/m²/day, and the cloudiest was 2008 at 3.
Average wind speed in Dungannon during August is 3.2 m/s. The windiest August was 1985 at 4.2 m/s, while the calmest was 1983 at 2.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 13.7°C | 14.2°C | 14.4°C | 13.7°C | 15.0°C | +1.3°C |
| Avg High | 17.4°C | 18.0°C | 18.0°C | 17.3°C | 18.7°C | +1.3°C |
| Avg Low | 10.0°C | 10.5°C | 10.8°C | 10.2°C | 11.2°C | +1.2°C |
| Avg Rain | 106 mm | 87 mm | 111 mm | 105 mm | 103 mm | -3 mm |
August temperatures in Dungannon have risen by about 0.8°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 4.5°C (1986) to a record high of 25°C (1995).
Rainfall in August is a relatively wet time of year, averaging 102 mm, with a wettest year of 195 mm.
One of the best times to visit Dungannon
August is one of the best times to visit Dungannon. Expect days averaging 17.8°C and nights around 10.5°C (mean 14.2°C) — warmer than Dungannon's yearly average — with higher rainfall (102 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 | 19.5°C | 15.7°C | 11.9°C | 23.9°C | 7.9°C | 64 mm | 86% | 3.2 m/s | 3.8 |
| 2024 | 17.7°C | 14.0°C | 10.4°C | 21.2°C | 7.1°C | 117 mm | 87% | 4 m/s | 3.5 |
| 2023 | 18.2°C | 14.8°C | 11.4°C | 22.8°C | 8.4°C | 125 mm | 88% | 3.5 m/s | 3.8 |
| 2022 | 19.5°C | 15.4°C | 11.2°C | 24.7°C | 8.8°C | 44 mm | 83% | 2.6 m/s | 4.5 |
| 2021 | 18.8°C | 15.1°C | 11.3°C | 22.9°C | 9.0°C | 109 mm | 88% | 2.5 m/s | 3.5 |
| 2020 | 18.5°C | 14.9°C | 11.2°C | 22.9°C | 6.3°C | 162 mm | 88% | 3 m/s | 3.5 |
| 2019 | 18.5°C | 14.7°C | 11.0°C | 22.4°C | 6.8°C | 137 mm | 87% | 3.5 m/s | 3.9 |
| 2018 | 17.7°C | 14.1°C | 10.5°C | 21.4°C | 6.4°C | 101 mm | 87% | 3.1 m/s | 3.4 |
| 2017 | 17.1°C | 13.4°C | 9.7°C | 19.8°C | 6.3°C | 125 mm | 88% | 3.2 m/s | 3.6 |
| 2016 | 18.0°C | 14.5°C | 11.1°C | 20.9°C | 7.8°C | 87 mm | 87% | 3.5 m/s | 3.6 |
| 2015 | 16.9°C | 13.0°C | 9.2°C | 20.2°C | 5.3°C | 136 mm | 87% | 3.1 m/s | 3.6 |
| 2014 | 16.0°C | 12.7°C | 9.4°C | 19.9°C | 6.2°C | 136 mm | 87% | 3.6 m/s | 3.7 |
| 2013 | 17.8°C | 14.4°C | 10.9°C | 21.4°C | 7.9°C | 71 mm | 86% | 3.1 m/s | 3.5 |
| 2012 | 18.0°C | 14.6°C | 11.2°C | 21.9°C | 6.9°C | 123 mm | 88% | 3.3 m/s | 3.8 |
| 2011 | 16.5°C | 12.8°C | 9.2°C | 19.4°C | 6.1°C | 65 mm | 86% | 2.7 m/s | 3.5 |
| 2010 | 16.8°C | 13.1°C | 9.4°C | 21.1°C | 5.5°C | 68 mm | 86% | 3.1 m/s | 4.1 |
| 2009 | 17.6°C | 14.1°C | 10.6°C | 21.0°C | 8.4°C | 161 mm | 88% | 3.7 m/s | 3.4 |
| 2008 🌧️ | 17.6°C | 14.6°C | 11.6°C | 21.4°C | 9.4°C | 195 mm | 89% | 3.2 m/s | 3 |
| 2007 | 17.1°C | 13.6°C | 10.0°C | 20.8°C | 7.3°C | 118 mm | 88% | 3.2 m/s | 3.5 |
| 2006 | 17.5°C | 14.3°C | 11.1°C | 23.5°C | 7.4°C | 86 mm | 87% | 3.3 m/s | 3.4 |
| 2005 | 17.9°C | 14.1°C | 10.3°C | 21.9°C | 7.4°C | 102 mm | 87% | 3.1 m/s | 3.6 |
| 2004 | 18.4°C | 15.0°C | 11.6°C | 22.0°C | 8.0°C | 129 mm | 88% | 3.1 m/s | 3.4 |
| 2003 | 19.3°C | 15.2°C | 11.1°C | 25.0°C | 7.2°C | 30 mm | 86% | 2.6 m/s | 4 |
| 2002 | 18.5°C | 14.7°C | 10.9°C | 22.5°C | 7.5°C | 72 mm | 87% | 2.7 m/s | 3.4 |
| 2001 | 17.5°C | 13.8°C | 10.1°C | 22.5°C | 6.5°C | 113 mm | 88% | 2.6 m/s | 3.5 |
| 2000 | 18.4°C | 14.4°C | 10.5°C | 20.9°C | 7.5°C | 100 mm | 86% | 2.6 m/s | 4 |
| 1999 | 17.5°C | 14.0°C | 10.5°C | 21.7°C | 6.8°C | 120 mm | 88% | 3.1 m/s | 3.6 |
| 1998 | 17.9°C | 14.2°C | 10.6°C | 22.4°C | 6.3°C | 84 mm | 87% | 3.6 m/s | 3.7 |
| 1997 | 19.7°C | 15.8°C | 12.0°C | 23.1°C | 7.8°C | 74 mm | 86% | 3.1 m/s | 3.9 |
| 1996 | 17.2°C | 13.6°C | 10.1°C | 22.0°C | 6.3°C | 124 mm | 89% | 2.9 m/s | 3.4 |
| 1995 🔥 | 21.2°C | 16.8°C | 12.3°C | 25.0°C | 7.9°C | 20 mm | 84% | 2.7 m/s | 4.6 |
| 1994 | 17.0°C | 13.3°C | 9.7°C | 21.6°C | 6.5°C | 82 mm | 86% | 3 m/s | 3.9 |
| 1993 | 16.2°C | 12.4°C | 8.6°C | 21.2°C | 5.1°C | 65 mm | 86% | 2.9 m/s | 3.7 |
| 1992 | 16.0°C | 12.5°C | 9.0°C | 19.3°C | 6.5°C | 144 mm | 85% | 3.7 m/s | 3.8 |
| 1991 | 18.8°C | 14.9°C | 11.0°C | 23.5°C | 6.8°C | 65 mm | 86% | 3 m/s | 3.7 |
| 1990 | 18.4°C | 14.9°C | 11.5°C | 23.9°C | 7.4°C | 89 mm | 87% | 3.3 m/s | 3.4 |
| 1989 | 17.6°C | 13.9°C | 10.1°C | 21.7°C | 6.2°C | 109 mm | 86% | 3.8 m/s | 3.3 |
| 1988 | 16.4°C | 13.0°C | 9.5°C | 20.8°C | 6.0°C | 119 mm | 87% | 3.8 m/s | 3.5 |
| 1987 | 17.7°C | 14.0°C | 10.4°C | 23.1°C | 5.8°C | 126 mm | 87% | 3 m/s | 3.3 |
| 1986 ❄️ | 14.8°C | 11.3°C | 7.9°C | 18.6°C | 4.5°C | 138 mm | 85% | 3.4 m/s | 3.2 |
| 1985 | 15.1°C | 12.2°C | 9.3°C | 19.4°C | 6.0°C | 194 mm | 89% | 4.2 m/s | 3.4 |
| 1984 | 19.6°C | 15.5°C | 11.3°C | 23.7°C | 6.5°C | 82 mm | 85% | 2.7 m/s | 3.7 |
| 1983 | 20.0°C | 15.5°C | 11.0°C | 23.2°C | 6.5°C | 54 mm | 85% | 2.4 m/s | — |
| 1982 | 16.8°C | 13.4°C | 10.0°C | 22.8°C | 5.5°C | 89 mm | 85% | 3.7 m/s | — |
| 1981 | 18.5°C | 14.5°C | 10.5°C | 22.1°C | 6.8°C | 46 mm | 87% | 2.7 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 17.8°C with lows near 10.5°C (mean 14.2°C), based on 45 years of NASA POWER data.
August averages 102 mm of rainfall in Dungannon, a relatively wet time of year. The wettest on record was 195 mm in 2008.
The hottest August reached 25°C in 1995. The coldest dipped to 4.5°C in 1986.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 0.8°C. Daytime highs moved from 18°C to 18.7°C and overnight lows from 10.4°C to 11.2°C over the same span.
August is one of the warmer months of the year in Dungannon and a relatively wet time of year, so plan for around 17.8°C daytime highs and 10.5°C at night.
Not quite — August is the 11th coolest month in Dungannon, averaging 14.2°C.
For August in Dungannon, pack light layers you can adjust through the day, with typical highs of 17.8°C and lows of 10.5°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 87% — quite humid.
Average wind speed in August is 3.2 m/s. The windiest August on record averaged 4.2 m/s (1985).
The wettest August on record was 2008 with 195 mm. On average, August sees 102 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 Dungannon 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.
