January is one of the cooler months of the year in Dungannon, with average highs near 5.9°C and lows around 1.7°C (mean 3.8°C). It is about average for rainfall, averaging 93 mm of rainfall and 95% relative humidity across the period.
January is one of the cooler months of the year in Dungannon. Across 45 years of records, the warmest January in Dungannon was 1989 — when the month averaged 5.7°C — while the coldest was 1985 at 0.1°C. Typical January days reach 5.9°C with nights near 1.7°C. The long-term trend is warming, about 0.2°C per decade.
January is about average for rainfall in Dungannon, averaging 93 mm of rainfall. The wettest January on record was 2008 with 151 mm, while the driest was 1997 at 35 mm.
Relative humidity in Dungannon during January averages 95%. The most humid January was 2001 at 96%, and the least humid was 1993 at 92%.
January receives about 0.6 kWh/m²/day of solar energy in Dungannon. The sunniest January was 1985 at 0.9 kWh/m²/day, and the cloudiest were 1995, 2008 and 2013, among others at 0.5.
Average wind speed in Dungannon during January is 4.1 m/s. The windiest Januarys were 1983 and 1993 at 5.8 m/s, while the calmest were 1985 and 1997 at 2.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 3.1°C | 3.8°C | 4.4°C | 3.6°C | 4.0°C | +0.9°C |
| Avg High | 5.2°C | 5.9°C | 6.5°C | 5.7°C | 6.1°C | +0.9°C |
| Avg Low | 1.0°C | 1.7°C | 2.3°C | 1.5°C | 1.9°C | +0.9°C |
| Avg Rain | 92 mm | 99 mm | 95 mm | 93 mm | 79 mm | -13 mm |
January temperatures in Dungannon have risen by about 1°C between 1981–1985 and 2021–2025.
January has ranged from a record low of -7.7°C (1982) to a record high of 12.5°C (2016).
Rainfall in January is about average for rainfall, averaging 93 mm, with a wettest year of 151 mm.
A quieter season to visit Dungannon
If your dates are flexible, the more temperate months of July and August tend to be the most comfortable for visiting Dungannon. That said, January — with days averaging 5.9°C and nights around 1.7°C (mean 3.8°C) and higher rainfall (93 mm) — can still be rewarding for travellers who don't mind the cooler conditions, and often means fewer crowds.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 5.9°C | 3.8°C | 1.8°C | 11.6°C | -2.3°C | 78 mm | 95% | 3.4 m/s | 0.7 |
| 2024 | 6.0°C | 3.9°C | 1.7°C | 12.1°C | -2.5°C | 78 mm | 95% | 3.8 m/s | 0.7 |
| 2023 | 6.6°C | 4.6°C | 2.6°C | 11.2°C | -2.7°C | 75 mm | 95% | 4.1 m/s | 0.7 |
| 2022 | 6.8°C | 4.5°C | 2.1°C | 11.7°C | -2.1°C | 46 mm | 95% | 3.6 m/s | 0.6 |
| 2021 | 4.5°C | 2.6°C | 0.8°C | 9.4°C | -2.5°C | 125 mm | 95% | 2.9 m/s | 0.7 |
| 2020 | 6.9°C | 4.7°C | 2.5°C | 12.5°C | -2.0°C | 71 mm | 96% | 4.5 m/s | 0.6 |
| 2019 | 6.1°C | 4.0°C | 2.0°C | 10.1°C | -3.2°C | 49 mm | 95% | 3.2 m/s | 0.6 |
| 2018 | 5.8°C | 3.9°C | 2.0°C | 11.6°C | -1.8°C | 143 mm | 95% | 4.4 m/s | 0.6 |
| 2017 | 6.4°C | 4.4°C | 2.3°C | 10.1°C | -2.2°C | 53 mm | 95% | 3.5 m/s | 0.6 |
| 2016 | 6.5°C | 4.2°C | 2.0°C | 12.5°C | -1.7°C | 135 mm | 95% | 4.2 m/s | 0.6 |
| 2015 | 5.6°C | 3.4°C | 1.1°C | 12.4°C | -1.9°C | 109 mm | 93% | 4.9 m/s | 0.6 |
| 2014 | 6.0°C | 4.0°C | 1.9°C | 9.7°C | -1.6°C | 101 mm | 96% | 4.1 m/s | 0.6 |
| 2013 | 5.6°C | 3.5°C | 1.4°C | 11.2°C | -3.5°C | 124 mm | 96% | 3.8 m/s | 0.5 |
| 2012 | 7.0°C | 4.6°C | 2.3°C | 10.4°C | -0.8°C | 94 mm | 94% | 4.5 m/s | 0.6 |
| 2011 | 4.3°C | 2.3°C | 0.2°C | 10.9°C | -3.2°C | 62 mm | 95% | 2.9 m/s | 0.7 |
| 2010 | 3.5°C | 1.5°C | -0.5°C | 8.3°C | -6.0°C | 65 mm | 95% | 3.2 m/s | 0.7 |
| 2009 | 5.2°C | 3.1°C | 1.0°C | 10.7°C | -2.7°C | 111 mm | 96% | 4.1 m/s | 0.6 |
| 2008 🌧️ | 6.8°C | 4.7°C | 2.5°C | 12.2°C | -2.8°C | 151 mm | 95% | 4.4 m/s | 0.5 |
| 2007 | 7.6°C | 5.5°C | 3.4°C | 11.7°C | -1.2°C | 100 mm | 94% | 5.1 m/s | 0.6 |
| 2006 | 6.5°C | 4.2°C | 2.0°C | 11.3°C | -1.6°C | 56 mm | 95% | 3.3 m/s | 0.6 |
| 2005 | 7.9°C | 5.6°C | 3.4°C | 11.9°C | -2.5°C | 87 mm | 94% | 5.4 m/s | 0.6 |
| 2004 | 6.5°C | 4.6°C | 2.6°C | 10.0°C | -2.8°C | 125 mm | 95% | 3.9 m/s | 0.6 |
| 2003 | 6.0°C | 4.0°C | 1.9°C | 12.4°C | -2.6°C | 88 mm | 94% | 4.3 m/s | 0.6 |
| 2002 | 7.6°C | 5.3°C | 3.1°C | 11.1°C | -3.7°C | 115 mm | 95% | 4.4 m/s | 0.6 |
| 2001 | 4.2°C | 2.4°C | 0.6°C | 8.1°C | -3.8°C | 61 mm | 96% | 3.2 m/s | 0.7 |
| 2000 | 6.3°C | 4.3°C | 2.3°C | 10.2°C | -1.5°C | 59 mm | 95% | 4 m/s | 0.7 |
| 1999 | 6.1°C | 4.0°C | 1.9°C | 10.7°C | -2.3°C | 125 mm | 95% | 4.3 m/s | 0.6 |
| 1998 | 6.0°C | 3.9°C | 1.8°C | 12.1°C | -3.0°C | 121 mm | 94% | 3.8 m/s | 0.6 |
| 1997 | 5.0°C | 2.9°C | 0.9°C | 10.5°C | -3.6°C | 35 mm | 96% | 2.5 m/s | 0.6 |
| 1996 | 6.1°C | 4.6°C | 3.0°C | 10.0°C | -2.4°C | 114 mm | 95% | 4.5 m/s | 0.6 |
| 1995 | 5.6°C | 3.3°C | 0.9°C | 10.6°C | -2.6°C | 121 mm | 95% | 4.5 m/s | 0.5 |
| 1994 | 5.7°C | 3.6°C | 1.5°C | 9.2°C | -1.1°C | 104 mm | 95% | 4.7 m/s | 0.6 |
| 1993 | 7.4°C | 4.6°C | 1.8°C | 12.0°C | -1.3°C | 113 mm | 92% | 5.8 m/s | 0.5 |
| 1992 | 5.9°C | 3.8°C | 1.7°C | 11.1°C | -3.3°C | 66 mm | 96% | 3.2 m/s | 0.6 |
| 1991 | 4.4°C | 2.3°C | 0.1°C | 10.7°C | -3.9°C | 86 mm | 95% | 4.2 m/s | 0.6 |
| 1990 | 7.2°C | 5.0°C | 2.9°C | 11.8°C | -1.2°C | 104 mm | 94% | 5.2 m/s | 0.6 |
| 1989 🔥 | 7.9°C | 5.7°C | 3.5°C | 11.6°C | -1.8°C | 79 mm | 95% | 4.9 m/s | 0.6 |
| 1988 | 5.3°C | 3.5°C | 1.7°C | 10.6°C | -1.8°C | 140 mm | 95% | 4.2 m/s | 0.6 |
| 1987 | 3.8°C | 1.8°C | -0.2°C | 9.1°C | -5.9°C | 43 mm | 94% | 3 m/s | 0.6 |
| 1986 | 4.5°C | 2.5°C | 0.5°C | 10.5°C | -3.2°C | 115 mm | 94% | 4.6 m/s | 0.5 |
| 1985 ❄️ | 2.2°C | 0.1°C | -2.0°C | 8.9°C | -6.7°C | 62 mm | 94% | 2.5 m/s | 0.9 |
| 1984 | 4.2°C | 2.0°C | -0.3°C | 10.7°C | -5.8°C | 138 mm | 93% | 4.8 m/s | 0.5 |
| 1983 | 7.1°C | 4.9°C | 2.6°C | 11.6°C | -1.8°C | 93 mm | 94% | 5.8 m/s | — |
| 1982 | 4.6°C | 2.8°C | 0.9°C | 10.7°C | -7.7°C | 87 mm | 95% | 4.1 m/s | — |
| 1981 | 6.8°C | 4.6°C | 2.4°C | 11.1°C | -2.7°C | 73 mm | 94% | 4.5 m/s | — |
Actual recorded January data for each year, 1981–2025 — sourced from NASA POWER.
The average high in January is around 5.9°C with lows near 1.7°C (mean 3.8°C), based on 45 years of NASA POWER data.
January averages 93 mm of rainfall in Dungannon, about average for rainfall. The wettest on record was 151 mm in 2008.
The hottest January reached 12.5°C in 2016. The coldest dipped to -7.7°C in 1982.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average January temperatures have risen by about 1°C. Daytime highs moved from 5°C to 6°C and overnight lows from 0.7°C to 1.8°C over the same span.
January is one of the cooler months of the year in Dungannon and about average for rainfall, so plan for around 5.9°C daytime highs and 1.7°C at night.
Yes — January is the coldest month of the year in Dungannon, averaging 3.8°C.
For January in Dungannon, pack warm layers and a jacket for chilly mornings, with typical highs of 5.9°C and lows of 1.7°C. Bring an umbrella or light rain jacket too.
Relative humidity in January averages 95% — quite humid.
Average wind speed in January is 4.1 m/s. The windiest January on record averaged 5.8 m/s (1983).
The wettest January on record was 2008 with 151 mm. On average, January sees 93 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 January, 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 January specifically, along with year-by-year records and how the month has changed over the decades.
