August is one of the warmer months of the year in Omagh, with average highs near 17.5°C and lows around 10.5°C (mean 14°C). It is a relatively wet time of year, averaging 109 mm of rainfall and 87% relative humidity across the period.
August is one of the warmer months of the year in Omagh. Across 45 years of records, the warmest August in Omagh was 1995 — when the month averaged 16.7°C — while the coldest was 1986 at 11.2°C. Typical August days reach 17.5°C with nights near 10.5°C. The long-term August temperature trend is broadly flat.
August is a relatively wet time of year in Omagh, averaging 109 mm of rainfall. The wettest August on record was 1985 with 224 mm, while the driest was 1995 at 21 mm.
Relative humidity in Omagh during August averages 87%. The most humid August was 2008 at 90%, and the least humid was 2022 at 84%.
August receives about 3.6 kWh/m²/day of solar energy in Omagh. The sunniest August was 1995 at 4.6 kWh/m²/day, and the cloudiest was 2008 at 3.
Average wind speed in Omagh 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 | 13.6°C | 14.1°C | 14.2°C | 13.5°C | 14.9°C | +1.3°C |
| Avg High | 17.1°C | 17.6°C | 17.6°C | 16.9°C | 18.4°C | +1.3°C |
| Avg Low | 10.0°C | 10.5°C | 10.7°C | 10.2°C | 11.3°C | +1.3°C |
| Avg Rain | 117 mm | 95 mm | 114 mm | 114 mm | 107 mm | -10 mm |
August temperatures in Omagh have risen by about 0.8°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 5°C (1986) to a record high of 25.6°C (2003).
Rainfall in August is a relatively wet time of year, averaging 109 mm, with a wettest year of 224 mm.
One of the best times to visit Omagh
August is one of the best times to visit Omagh. Expect days averaging 17.5°C and nights around 10.5°C (mean 14°C) — warmer than Omagh's yearly average — with higher rainfall (109 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 | 19.3°C | 15.7°C | 12.1°C | 24.0°C | 8.2°C | 76 mm | 86% | 3.3 m/s | 3.8 |
| 2024 | 17.1°C | 13.8°C | 10.4°C | 20.7°C | 6.7°C | 130 mm | 87% | 4.1 m/s | 3.5 |
| 2023 | 17.9°C | 14.7°C | 11.5°C | 22.6°C | 8.5°C | 123 mm | 88% | 3.6 m/s | 3.8 |
| 2022 | 19.0°C | 15.1°C | 11.1°C | 24.9°C | 8.5°C | 48 mm | 84% | 2.7 m/s | 4.5 |
| 2021 | 18.6°C | 15.0°C | 11.3°C | 22.7°C | 9.5°C | 106 mm | 88% | 2.5 m/s | 3.5 |
| 2020 | 18.4°C | 14.8°C | 11.1°C | 23.3°C | 6.8°C | 161 mm | 88% | 2.9 m/s | 3.5 |
| 2019 | 18.0°C | 14.5°C | 11.0°C | 21.5°C | 7.0°C | 162 mm | 88% | 3.6 m/s | 3.9 |
| 2018 | 17.1°C | 13.8°C | 10.5°C | 20.7°C | 6.0°C | 116 mm | 87% | 3.2 m/s | 3.4 |
| 2017 | 16.7°C | 13.3°C | 9.8°C | 19.3°C | 7.3°C | 135 mm | 88% | 3.3 m/s | 3.6 |
| 2016 | 17.7°C | 14.3°C | 11.0°C | 21.3°C | 8.2°C | 101 mm | 88% | 3.6 m/s | 3.6 |
| 2015 | 16.3°C | 12.8°C | 9.2°C | 19.8°C | 5.6°C | 149 mm | 88% | 3.2 m/s | 3.6 |
| 2014 | 15.7°C | 12.6°C | 9.6°C | 20.1°C | 5.4°C | 130 mm | 87% | 3.6 m/s | 3.7 |
| 2013 | 17.3°C | 14.1°C | 11.0°C | 20.9°C | 8.1°C | 78 mm | 87% | 3.3 m/s | 3.5 |
| 2012 | 17.8°C | 14.4°C | 11.1°C | 22.4°C | 7.3°C | 124 mm | 88% | 3.4 m/s | 3.8 |
| 2011 | 16.0°C | 12.6°C | 9.2°C | 19.6°C | 6.1°C | 74 mm | 86% | 2.7 m/s | 3.5 |
| 2010 | 16.4°C | 12.9°C | 9.5°C | 20.5°C | 5.7°C | 74 mm | 86% | 3.1 m/s | 4.1 |
| 2009 | 17.0°C | 13.8°C | 10.6°C | 20.2°C | 8.5°C | 170 mm | 88% | 3.8 m/s | 3.4 |
| 2008 | 17.3°C | 14.4°C | 11.5°C | 21.0°C | 9.1°C | 197 mm | 90% | 3.2 m/s | 3 |
| 2007 | 16.7°C | 13.4°C | 10.0°C | 20.4°C | 8.1°C | 114 mm | 89% | 3.2 m/s | 3.5 |
| 2006 | 17.2°C | 14.2°C | 11.2°C | 23.0°C | 8.2°C | 86 mm | 88% | 3.3 m/s | 3.4 |
| 2005 | 17.5°C | 13.9°C | 10.4°C | 21.7°C | 7.4°C | 120 mm | 88% | 3.1 m/s | 3.6 |
| 2004 | 18.1°C | 14.8°C | 11.5°C | 22.2°C | 8.2°C | 115 mm | 88% | 3.1 m/s | 3.4 |
| 2003 | 19.0°C | 15.0°C | 11.0°C | 25.6°C | 7.3°C | 34 mm | 86% | 2.6 m/s | 4 |
| 2002 | 18.2°C | 14.5°C | 10.8°C | 22.4°C | 7.6°C | 80 mm | 88% | 2.7 m/s | 3.4 |
| 2001 | 17.1°C | 13.6°C | 10.0°C | 21.6°C | 6.9°C | 117 mm | 88% | 2.7 m/s | 3.5 |
| 2000 | 17.9°C | 14.2°C | 10.4°C | 20.5°C | 7.7°C | 106 mm | 87% | 2.6 m/s | 4 |
| 1999 | 17.4°C | 13.9°C | 10.5°C | 21.5°C | 6.4°C | 124 mm | 88% | 3.2 m/s | 3.6 |
| 1998 | 17.5°C | 14.1°C | 10.7°C | 21.5°C | 6.5°C | 97 mm | 88% | 3.6 m/s | 3.7 |
| 1997 | 19.3°C | 15.7°C | 12.0°C | 23.2°C | 8.7°C | 82 mm | 86% | 3.2 m/s | 3.9 |
| 1996 | 16.9°C | 13.5°C | 10.1°C | 21.4°C | 6.5°C | 143 mm | 89% | 2.9 m/s | 3.4 |
| 1995 🔥 | 21.0°C | 16.7°C | 12.3°C | 24.9°C | 8.0°C | 21 mm | 85% | 2.8 m/s | 4.6 |
| 1994 | 16.5°C | 13.1°C | 9.7°C | 21.1°C | 6.7°C | 87 mm | 86% | 3.1 m/s | 3.9 |
| 1993 | 15.8°C | 12.3°C | 8.7°C | 21.4°C | 5.9°C | 69 mm | 87% | 2.9 m/s | 3.7 |
| 1992 | 15.5°C | 12.3°C | 9.0°C | 18.6°C | 6.8°C | 156 mm | 85% | 3.8 m/s | 3.8 |
| 1991 | 18.5°C | 14.7°C | 11.0°C | 23.0°C | 7.1°C | 68 mm | 87% | 3.1 m/s | 3.7 |
| 1990 | 17.9°C | 14.6°C | 11.4°C | 22.9°C | 8.0°C | 99 mm | 87% | 3.3 m/s | 3.4 |
| 1989 | 17.2°C | 13.7°C | 10.2°C | 21.2°C | 5.9°C | 131 mm | 86% | 4 m/s | 3.3 |
| 1988 | 16.1°C | 12.9°C | 9.6°C | 20.8°C | 6.5°C | 136 mm | 88% | 3.8 m/s | 3.5 |
| 1987 | 17.5°C | 14.0°C | 10.5°C | 22.4°C | 6.2°C | 123 mm | 87% | 3 m/s | 3.3 |
| 1986 ❄️ | 14.6°C | 11.2°C | 7.8°C | 18.7°C | 5.0°C | 141 mm | 86% | 3.2 m/s | 3.2 |
| 1985 🌧️ | 14.7°C | 12.0°C | 9.3°C | 18.7°C | 6.4°C | 224 mm | 89% | 4.2 m/s | 3.4 |
| 1984 | 19.5°C | 15.3°C | 11.1°C | 23.9°C | 6.8°C | 76 mm | 85% | 2.7 m/s | 3.7 |
| 1983 | 19.8°C | 15.4°C | 11.0°C | 23.2°C | 5.9°C | 66 mm | 86% | 2.4 m/s | — |
| 1982 | 16.5°C | 13.3°C | 10.0°C | 22.2°C | 5.4°C | 101 mm | 85% | 3.8 m/s | — |
| 1981 | 18.3°C | 14.4°C | 10.5°C | 21.8°C | 6.9°C | 55 mm | 88% | 2.7 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 17.5°C with lows near 10.5°C (mean 14°C), based on 45 years of NASA POWER data.
August averages 109 mm of rainfall in Omagh, a relatively wet time of year. The wettest on record was 224 mm in 1985.
The hottest August reached 25.6°C in 2003. The coldest dipped to 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 17.8°C to 18.4°C and overnight lows from 10.4°C to 11.3°C over the same span.
August is one of the warmer months of the year in Omagh and a relatively wet time of year, so plan for around 17.5°C daytime highs and 10.5°C at night.
Not quite — August is the 11th coolest month in Omagh, averaging 14°C.
For August in Omagh, pack light layers you can adjust through the day, with typical highs of 17.5°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 1985 with 224 mm. On average, August sees 109 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 Omagh 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.
