Belfast Weather in January
January in Belfast typically sees daytime highs of 27°C (81°F) and nighttime lows of 24°C (75°F). Rainfall is also possible this month, so it's worth packing an umbrella.
Rainfall in Belfast in January
Records from the past 30 years suggest around 7 days of rain, with 63 mm (2.5 in) average for the month. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.
Temperature in Belfast in January
Belfast has perfect weather in January, with days reaching 27°C (81°F) and nights cooling to 24°C (75°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. With lows around 24°C (75°F), the nights are warm enough that a sheet is usually all you need for bedding.
Sunshine in Belfast in January
The days are predominantly sunny, with an estimated total of around 257 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.If you're a fan of comfortable temperatures and drier conditions, January is a great time to visit.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Jamaica, check out our Belfast's climate page.
Belfast Temperature in January
Min Temperature
24°C (75°F)
Max Temperature
27°C (81°F)
Chance of Rain
23%
Precipitation
63 mm (2.5 in)
Rainy days
7 days
Humidity
73% *
Sunshine
257 hours *
Percentage Sunshine
*
Daily Historical Temperatures
51-year average (1976-2026)
Based on our historical records, temperatures in Belfast typically stay consistent throughout January, with daily highs averaging around 27°C (81°F). Nights are warm, with lows around 24°C (75°F).
Average temperatures in January
Daily Historical Precipitation
51-year average (1976-2026)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in January
Historical weather for Belfast in January
Browse day-by-day weather records for Belfast spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Belfast historical weather extremes in January
Our historical data for Belfast spans 2004 to 2025, revealing these weather extremes.
- Belfast recorded its highest January temperature of 34°C (93°F) on January 6, 2007.
- Belfast experienced its chilliest January day on January 11, 2010, reaching only 24°C (75°F).
- Belfast registered its coldest January night on January 11, 2010, with temperatures dropping to 19°C (66°F).
Best Places in Jamaica in January
Find out more about the weather in Jamaica and which places have the best travel conditions in this month. See all of Jamaica in January →
perfect weather
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tolerable
unpleasant
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What to Wear in Belfast in January
Warm but pleasant conditions in Belfast in January. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Wet weather is likely, so pack waterproof gear for multiple rainy days. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Belfast in January
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Jamaica, check out our Belfast's climate page.
Temperature Rainfall Sunshine Humidity
See the full Belfast climate overview or explore weather in Jamaica.
