Belfast Weather in January
Average highs run from 26°C on January 1 to 25°C on January 31, and lows from 13°C to 13°C. Normal precipitation for the month is 146 mm over about 22 wet days.
January day by day
The normal high and low for each date, in °C.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
January at a glance
- Average high
- 25°C
- Average low
- 13°C
- Precipitation
- 146 mm
- Reanalysis high
- 35°CJan 6, 2016
- Reanalysis low
- 5°CJan 18, 2017
- Daylight
- 13 h 43 min to 13 h 17 min
- Cloud cover
- 69%
- Humidity
- 74%
- Dew point
- 13°C
- Wind
- 10.8 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 | Reanalysis high | Reanalysis low | Chance wet |
|---|---|---|---|---|---|
| Jan 1 | 26°C | 13°C | 30°C 2002 | 9°C 2007 | 70% |
| Jan 2 | 25°C | 13°C | 29°C 2008 | 7°C 2001 | 71% |
| Jan 3 | 25°C | 13°C | 29°C 2003 | 6°C 2001 | 71% |
| Jan 4 | 25°C | 13°C | 31°C 2016 | 6°C 2001 | 71% |
| Jan 5 | 25°C | 13°C | 32°C 2016 | 7°C 2001 | 70% |
| Jan 6 | 25°C | 13°C | 35°C 2016 | 9°C 2007 | 70% |
| Jan 7 | 25°C | 13°C | 35°C 2016 | 10°C 2011 | 70% |
| Jan 8 | 25°C | 13°C | 31°C 2018 | 9°C 1994 | 70% |
| Jan 9 | 25°C | 13°C | 32°C 2013 | 9°C 2008 | 69% |
| Jan 10 | 25°C | 13°C | 30°C 2001 | 9°C 2003 | 69% |
| Jan 11 | 25°C | 13°C | 32°C 2001 | 9°C 2003 | 69% |
| Jan 12 | 25°C | 13°C | 31°C 2004 | 10°C 2000 | 70% |
| Jan 13 | 25°C | 13°C | 32°C 2004 | 9°C 1993 | 71% |
| Jan 14 | 25°C | 13°C | 32°C 2003 | 7°C 2000 | 72% |
| Jan 15 | 25°C | 13°C | 32°C 2004 | 10°C 2000 | 72% |
| Jan 16 | 25°C | 13°C | 30°C 2003 | 11°C 2012 | 73% |
| Jan 17 | 25°C | 13°C | 31°C 1993 | 8°C 2017 | 73% |
| Jan 18 | 25°C | 13°C | 31°C 2002 | 5°C 2017 | 73% |
| Jan 19 | 25°C | 13°C | 31°C 1993 | 6°C 2000 | 73% |
| Jan 20 | 25°C | 13°C | 30°C 2003 | 9°C 2019 | 73% |
| Jan 21 | 25°C | 13°C | 30°C 2002 | 8°C 2019 | 73% |
| Jan 22 | 25°C | 13°C | 30°C 2002 | 9°C 2019 | 73% |
| Jan 23 | 25°C | 13°C | 31°C 2019 | 10°C 2013 | 73% |
| Jan 24 | 25°C | 13°C | 31°C 2001 | 9°C 2013 | 73% |
| Jan 25 | 25°C | 13°C | 29°C 2019 | 11°C 2000 | 73% |
| Jan 26 | 25°C | 13°C | 31°C 1995 | 10°C 1994 | 72% |
| Jan 27 | 25°C | 13°C | 31°C 1995 | 9°C 1996 | 72% |
| Jan 28 | 25°C | 13°C | 31°C 1995 | 8°C 1996 | 72% |
| Jan 29 | 25°C | 13°C | 30°C 2003 | 7°C 1996 | 73% |
| Jan 30 | 25°C | 13°C | 32°C 2003 | 7°C 1996 | 72% |
| Jan 31 | 25°C | 13°C | 30°C 2003 | 9°C 1996 | 71% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+2).
- January 1
- sunrise 5:12 AM, sunset 6:55 PM
- January 31
- sunrise 5:35 AM, sunset 6:52 PM
Other months
Sources
Cloud, humidity, wind and sunshine, and temperature and precipitation: 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 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.