January is one of the cooler months of the year in Bangor, with average highs near 7.4°C and lows around 4.8°C (mean 6.1°C). It is a relatively wet time of year, averaging 123 mm of rainfall and 87% relative humidity across the period.
January is one of the cooler months of the year in Bangor. Across 45 years of records, the warmest January in Bangor was 2007 — when the month averaged 7.9°C — while the coldest was 1987 at 3°C. Typical January days reach 7.4°C with nights near 4.8°C. The long-term trend is warming, about 0.3°C per decade.
January is a relatively wet time of year in Bangor, averaging 123 mm of rainfall. The wettest January on record was 2021 with 236 mm, while the driest was 1997 at 12 mm.
Relative humidity in Bangor during January averages 87%. The most humid January was 1982 at 90%, and the least humid was 1984 at 84%.
January receives about 0.7 kWh/m²/day of solar energy in Bangor. The sunniest Januarys were 2001, 2003 and 2023, among others at 0.8 kWh/m²/day, and the cloudiest were 1987, 1996 and 2013 at 0.5.
Average wind speed in Bangor during January is 6.3 m/s. The windiest January was 1983 at 8.2 m/s, while the calmest was 1997 at 4.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 5.4°C | 6.0°C | 6.7°C | 6.0°C | 6.6°C | +1.2°C |
| Avg High | 6.7°C | 7.3°C | 7.9°C | 7.3°C | 7.8°C | +1.1°C |
| Avg Low | 4.1°C | 4.7°C | 5.4°C | 4.8°C | 5.4°C | +1.3°C |
| Avg Rain | 113 mm | 119 mm | 122 mm | 123 mm | 148 mm | +35 mm |
January temperatures in Bangor have risen by about 1.3°C between 1981–1985 and 2021–2025.
January has ranged from a record low of -4.6°C (1982) to a record high of 12.6°C (2022).
Rainfall in January is a relatively wet time of year, averaging 123 mm, with a wettest year of 236 mm.
A quieter season to visit Bangor
If your dates are flexible, the more temperate months of July and August tend to be the most comfortable for visiting Bangor. That said, January — with days averaging 7.4°C and nights around 4.8°C (mean 6.1°C) and higher rainfall (123 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 | 7.2°C | 6.0°C | 4.9°C | 11.3°C | 2.1°C | 167 mm | 87% | 5.4 m/s | 0.7 |
| 2024 | 7.8°C | 6.6°C | 5.4°C | 11.7°C | 2.4°C | 174 mm | 86% | 6.2 m/s | 0.7 |
| 2023 | 8.3°C | 7.1°C | 5.9°C | 11.4°C | 2.5°C | 141 mm | 87% | 6.4 m/s | 0.8 |
| 2022 | 8.4°C | 7.1°C | 5.8°C | 12.6°C | 3.3°C | 46 mm | 86% | 5.1 m/s | 0.7 |
| 2021 🌧️ | 6.6°C | 5.5°C | 4.3°C | 9.8°C | 1.9°C | 236 mm | 87% | 5.4 m/s | 0.6 |
| 2020 | 8.7°C | 7.5°C | 6.3°C | 11.1°C | 3.7°C | 126 mm | 88% | 6.1 m/s | 0.6 |
| 2019 | 7.3°C | 6.3°C | 5.3°C | 9.9°C | 1.5°C | 70 mm | 85% | 4.9 m/s | 0.6 |
| 2018 | 7.9°C | 6.4°C | 4.9°C | 11.1°C | 1.8°C | 168 mm | 88% | 6.9 m/s | 0.7 |
| 2017 | 7.7°C | 6.4°C | 5.1°C | 10.2°C | 2.0°C | 86 mm | 88% | 5.2 m/s | 0.6 |
| 2016 | 8.4°C | 7.2°C | 6.0°C | 11.5°C | 3.0°C | 198 mm | 86% | 6.6 m/s | 0.6 |
| 2015 | 7.7°C | 6.3°C | 5.0°C | 11.7°C | 2.8°C | 158 mm | 84% | 7.4 m/s | 0.7 |
| 2014 | 8.2°C | 6.9°C | 5.6°C | 10.4°C | 2.2°C | 151 mm | 88% | 6.4 m/s | 0.6 |
| 2013 | 6.7°C | 5.5°C | 4.4°C | 10.3°C | 0.7°C | 99 mm | 88% | 5.9 m/s | 0.5 |
| 2012 | 8.1°C | 6.8°C | 5.5°C | 11.2°C | 0.9°C | 110 mm | 87% | 6.5 m/s | 0.6 |
| 2011 | 6.1°C | 4.9°C | 3.6°C | 9.8°C | -0.2°C | 111 mm | 87% | 4.7 m/s | 0.7 |
| 2010 | 4.8°C | 3.7°C | 2.7°C | 8.6°C | -0.4°C | 80 mm | 87% | 5.2 m/s | 0.7 |
| 2009 | 6.5°C | 5.2°C | 3.9°C | 9.8°C | -0.4°C | 123 mm | 87% | 5.9 m/s | 0.6 |
| 2008 | 8.9°C | 7.6°C | 6.2°C | 10.9°C | 1.5°C | 211 mm | 88% | 7.3 m/s | 0.6 |
| 2007 🔥 | 9.2°C | 7.9°C | 6.7°C | 11.6°C | 2.8°C | 166 mm | 86% | 7.9 m/s | 0.7 |
| 2006 | 7.3°C | 6.2°C | 5.0°C | 10.4°C | 1.2°C | 63 mm | 87% | 5.2 m/s | 0.7 |
| 2005 | 8.9°C | 7.5°C | 6.1°C | 11.8°C | 3.3°C | 108 mm | 87% | 7.9 m/s | 0.6 |
| 2004 | 8.2°C | 7.0°C | 5.9°C | 10.8°C | 2.5°C | 147 mm | 87% | 6.5 m/s | 0.6 |
| 2003 | 7.4°C | 6.3°C | 5.1°C | 10.7°C | 0.1°C | 100 mm | 87% | 6.6 m/s | 0.8 |
| 2002 | 8.6°C | 7.2°C | 5.9°C | 11.1°C | 1.8°C | 116 mm | 89% | 6.6 m/s | 0.6 |
| 2001 | 6.3°C | 5.0°C | 3.8°C | 10.0°C | 0.4°C | 69 mm | 87% | 5.2 m/s | 0.8 |
| 2000 | 7.7°C | 6.7°C | 5.6°C | 10.5°C | 3.6°C | 120 mm | 88% | 6.1 m/s | 0.7 |
| 1999 | 8.4°C | 7.1°C | 5.7°C | 11.1°C | 2.8°C | 190 mm | 87% | 6.6 m/s | 0.7 |
| 1998 | 7.8°C | 6.5°C | 5.2°C | 11.9°C | 1.5°C | 172 mm | 86% | 6.6 m/s | 0.6 |
| 1997 | 5.4°C | 4.0°C | 2.7°C | 9.3°C | -2.4°C | 12 mm | 89% | 4.5 m/s | 0.6 |
| 1996 | 6.7°C | 5.6°C | 4.5°C | 10.7°C | -1.2°C | 71 mm | 90% | 7.1 m/s | 0.5 |
| 1995 | 7.8°C | 6.2°C | 4.7°C | 10.5°C | 1.6°C | 175 mm | 87% | 7.3 m/s | 0.6 |
| 1994 | 7.4°C | 6.2°C | 4.9°C | 10.3°C | 2.0°C | 121 mm | 87% | 6.9 m/s | 0.7 |
| 1993 | 8.2°C | 6.6°C | 5.1°C | 10.8°C | 1.6°C | 119 mm | 87% | 7.9 m/s | 0.6 |
| 1992 | 6.8°C | 5.6°C | 4.3°C | 10.5°C | 0.8°C | 52 mm | 88% | 4.7 m/s | 0.7 |
| 1991 | 5.9°C | 4.5°C | 3.1°C | 10.9°C | 0.4°C | 115 mm | 85% | 6.1 m/s | 0.7 |
| 1990 | 9.0°C | 7.7°C | 6.5°C | 10.8°C | 3.3°C | 161 mm | 88% | 7.8 m/s | 0.8 |
| 1989 | 9.0°C | 7.7°C | 6.5°C | 11.3°C | 5.1°C | 68 mm | 87% | 6.5 m/s | 0.7 |
| 1988 | 7.6°C | 6.4°C | 5.2°C | 11.2°C | 2.6°C | 179 mm | 88% | 6.7 m/s | 0.7 |
| 1987 ❄️ | 4.3°C | 3.0°C | 1.7°C | 9.5°C | -4.4°C | 43 mm | 85% | 5 m/s | 0.5 |
| 1986 | 6.5°C | 5.3°C | 4.1°C | 10.4°C | 1.6°C | 136 mm | 85% | 7.4 m/s | 0.6 |
| 1985 | 4.6°C | 3.1°C | 1.6°C | 9.4°C | -4.3°C | 78 mm | 86% | 5 m/s | 0.6 |
| 1984 | 6.7°C | 5.3°C | 3.8°C | 11.3°C | 0.8°C | 162 mm | 84% | 7.9 m/s | 0.6 |
| 1983 | 8.4°C | 7.0°C | 5.5°C | 11.0°C | 1.5°C | 142 mm | 88% | 8.2 m/s | — |
| 1982 | 5.5°C | 4.3°C | 3.0°C | 10.3°C | -4.6°C | 117 mm | 90% | 6.2 m/s | — |
| 1981 | 7.7°C | 6.4°C | 5.2°C | 10.1°C | 2.2°C | 96 mm | 87% | 6.5 m/s | — |
Actual recorded January data for each year, 1981–2025 — sourced from NASA POWER.
The average high in January is around 7.4°C with lows near 4.8°C (mean 6.1°C), based on 45 years of NASA POWER data.
January averages 123 mm of rainfall in Bangor, a relatively wet time of year. The wettest on record was 236 mm in 2021.
The hottest January reached 12.6°C in 2022. The coldest dipped to -4.6°C in 1982.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average January temperatures have risen by about 1.3°C. Daytime highs moved from 6.6°C to 7.7°C and overnight lows from 3.8°C to 5.3°C over the same span.
January is one of the cooler months of the year in Bangor and a relatively wet time of year, so plan for around 7.4°C daytime highs and 4.8°C at night.
Not quite — January is the 2nd coolest month in Bangor, averaging 6.1°C.
For January in Bangor, pack warm layers and a jacket for chilly mornings, with typical highs of 7.4°C and lows of 4.8°C. Bring an umbrella or light rain jacket too.
Relative humidity in January averages 87% — quite humid.
Average wind speed in January is 6.3 m/s. The windiest January on record averaged 8.2 m/s (1983).
The wettest January on record was 2021 with 236 mm. On average, January sees 123 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 Bangor 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.
