11-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Morning
Clear sky
4°
Feels like 1°
Wind↑ NE 9 km/h
Humidity 92 %
Evening
Clear sky
4°
Feels like 3°
Wind↑ N 6 km/h
Humidity 94 %
12-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Morning
Mainly clear
3°
Feels like 1°
Wind↑ W 6 km/h
Humidity 92 %
Evening
Partly cloudy
5°
Feels like 2°
Wind↑ WSW 11 km/h
Gusts29 km/h
Humidity 95 %
13-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Morning
Partly cloudy
5°
Feels like 2°
Wind↑ W 14 km/h
Gusts41 km/h
Humidity 97 %
Evening
Rain showers
7°
Feels like 5°
Wind↑ NW 12 km/h
Gusts30 km/h
Humidity 82 %
💧 0.2 mm
14-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Morning
Overcast
6°
Feels like 4°
Wind↑ NW 7 km/h
Gusts15 km/h
Humidity 70 %
Belfast forecast in charts · next 7 days
The week ahead: highs and lows
≈ A week close to the usual temperatures
Highs Lows Usual for the season (1991–2020 average)
Hourly detail
Temperature (°C) Rain (mm) Wind (km/h)
Belfast climate: what a normal year looks like
From 17 h 16 min of daylight in late June to 7 h 15 min in late December.
The hottest stretch is July, when afternoons average 17 °C; the coldest is February, when nights average 4 °C.
There is no real dry season: monthly rainfall stays between 72 mm and 100 mm on average.
Even the coldest month, February, keeps nights above freezing on average (4 °C).
Forecast highs for the coming week average 12 °C, 1 °C cooler than a normal October (13 °C).
30-year averages (1991–2020)
Month
Typical high
Typical low
Rainfall
Jan
8 °C
4 °C
89 mm
Feb
8 °C
4 °C
74 mm
Mar
9 °C
5 °C
73 mm
Apr
11 °C
6 °C
72 mm
May
13 °C
8 °C
77 mm
Jun
15 °C
11 °C
84 mm
Jul
17 °C
13 °C
93 mm
Aug
17 °C
13 °C
92 mm
Sep
15 °C
11 °C
81 mm
Oct
13 °C
9 °C
100 mm
Nov
10 °C
6 °C
99 mm
Dec
8 °C
4 °C
95 mm
Whole year
12 °C
8 °C
1,030 mm
Source: our own processing of the ERA5 reanalysis (Copernicus/ECMWF) for 54.60° N, 5.93° W, 1991–2020. ERA5 averages over a 0.25° grid (about 25 km): hills, a coastline or the heat of the city itself can shift local values by a degree or two.
Air you breathe in Belfast: pollution and pollen
2/6
Fair
European Air Quality Index (EAQI), from Copernicus CAMS
PM2.510µg/m³
PM1016µg/m³
O₃52µg/m³
NO₂6µg/m³
SO₂1µg/m³
Pollen
AlderNone
BirchNone
GrassNone
MugwortNone
OliveNone
RagweedNone
Copernicus CAMS model, updated several times a day.
Rain radar around Belfast
Rain observed over the last two hours by official weather radars around Belfast, followed by the radar forecast for the next hour where the weather service provides one.
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Rain radarLast two hours, then forecast where available · drag the timeline
Moon over Belfast
Waning gibbous
87 % illuminated · 18.3 days
Rise 05:57 Set 00:26
Fri30/1079%
Sat31/1069%
Sun1/1159%
Mon2/1149%Last quarter
Tue3/1138%
Wed4/1128%
Thu5/1119%
Fri6/1112%
Sat7/116%
Sun8/112%
Mon9/110%
Tue10/111%New moon
Moonrise and moonset in local time (Europe/London); phase and lit fraction from a synodic calculation.
Look up a past day in Belfast
Curious about the weather in Belfast on a given day? Choose a date: we read it from the ERA5 reanalysis (ECMWF / Copernicus C3S), which runs until about a week ago.
Belfast weather at a glance
This page gathers everything about the weather in Belfast, NIR: conditions now, the forecast for each part of the day and the trend for the coming week. At the moment the sky is “partly cloudy”, it is 14 °C (feels like 14 °C) and the wind blows at 15 km/h.
Expected range today: 9 °C to 14 °C and a dry sky. The forecast comes from the AtmoAtlas engine, which combines ECMWF-AIFS, NOAA GFS and DWD ICON, adjusts cloud cover with METAR reports and uses convective energy (CAPE) to flag storms.
Use the Belfast forecast in your own website or app: one JSON call returns weather, air quality, tides and sun and moon times. The free key needs no card.
