Belfast Weather in January
Average highs run from 8°C on January 1 to 8°C on January 31, and lows from 2°C to 3°C. Normal precipitation for the month is 89 mm over about 18 wet days.
January day by day
The normal high and low for each date, and the record, in °C.
- Normal low
- Normal high
- Record high
- Record low
January at a glance
- Average high
- 8°C
- Average low
- 2°C
- Precipitation
- 89 mm
- Record high
- 15°CJan 25, 2003
- Record low
- -10°CJan 12, 1982
- Daylight
- 7 h 23 min to 8 h 45 min
- Cloud cover
- 79%
- Humidity
- 94%
- Dew point
- 3°C
- Wind
- 23.8 km/h
Every day of the month
A wet day has at least 1 mm of precipitation in the reanalysis.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| Jan 1 | 8°C | 2°C | 13°C 1992 | -8°C 1979 | 60% |
| Jan 2 | 8°C | 2°C | 13°C 2023 | -7°C 1979 | 59% |
| Jan 3 | 8°C | 3°C | 13°C 2007 | -4°C 1985 | 58% |
| Jan 4 | 8°C | 3°C | 13°C 1983 | -4°C 1985 | 58% |
| Jan 5 | 8°C | 3°C | 13°C 1971 | -4°C 1970 | 60% |
| Jan 6 | 8°C | 2°C | 14°C 2020 | -6°C 2009 | 60% |
| Jan 7 | 8°C | 3°C | 13°C 1998 | -6°C 2009 | 60% |
| Jan 8 | 8°C | 2°C | 14°C 1998 | -7°C 2010 | 60% |
| Jan 9 | 8°C | 2°C | 14°C 2005 | -6°C 2010 | 60% |
| Jan 10 | 9°C | 2°C | 13°C 2020 | -4°C 1968 | 60% |
| Jan 11 | 8°C | 2°C | 13°C 2007 | -5°C 1982 | 61% |
| Jan 12 | 8°C | 3°C | 13°C 2007 | -10°C 1982 | 61% |
| Jan 13 | 9°C | 3°C | 13°C 1968 | -7°C 1979 | 60% |
| Jan 14 | 8°C | 3°C | 13°C 1990 | -6°C 1979 | 61% |
| Jan 15 | 8°C | 3°C | 14°C 1993 | -3°C 1966 | 61% |
| Jan 16 | 8°C | 3°C | 12°C 2025 | -3°C 2007 | 61% |
| Jan 17 | 8°C | 3°C | 11°C 1968 | -5°C 2007 | 61% |
| Jan 18 | 8°C | 3°C | 14°C 2008 | -3°C 1978 | 61% |
| Jan 19 | 8°C | 3°C | 13°C 2002 | -2°C 2015 | 60% |
| Jan 20 | 8°C | 2°C | 14°C 2024 | -5°C 1984 | 59% |
| Jan 21 | 8°C | 2°C | 13°C 2020 | -3°C 2011 | 58% |
| Jan 22 | 8°C | 3°C | 14°C 2024 | -3°C 1963 | 58% |
| Jan 23 | 9°C | 2°C | 14°C 2016 | -4°C 1963 | 58% |
| Jan 24 | 8°C | 2°C | 14°C 2024 | -4°C 1963 | 57% |
| Jan 25 | 8°C | 2°C | 15°C 2003 | -4°C 1963 | 56% |
| Jan 26 | 8°C | 2°C | 13°C 1989 | -4°C 1979 | 55% |
| Jan 27 | 8°C | 2°C | 14°C 2008 | -5°C 1979 | 56% |
| Jan 28 | 8°C | 2°C | 14°C 2013 | -5°C 1979 | 56% |
| Jan 29 | 8°C | 3°C | 13°C 1964 | -4°C 1977 | 56% |
| Jan 30 | 8°C | 3°C | 14°C 2002 | -3°C 1971 | 56% |
| Jan 31 | 8°C | 3°C | 13°C 2002 | -4°C 1972 | 57% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+0).
- January 1
- sunrise 8:46 AM, sunset 4:09 PM
- January 31
- sunrise 8:15 AM, sunset 5:00 PM
Other months
Sources
Records: NOAA GHCN-Daily, station UKE00105877, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-26. Sun and moon: computed with the NOAA solar equations and Meeus.