Slieve Bearnagh Weather Forecast
Today's Forecast (Sat, 12 Sep 2026)
Now
13°C
09:00
13°C
12:00
16°C
15:00
18°C
18:00
13°C
21:00
11°C
00:00
10°C
03:00
10°C
06:00
9°C
09:00
11°C
12:00
16°C
15:00
16°C
18:00
13°C
21:00
10°C
00:00
11°C
03:00
11°C
06:00
10°C
09:00
14°C
12:00
15°C
15:00
16°C
18:00
14°C
21:00
13°C
00:00
12°C
03:00
11°C
6 Day Forecast
Today
Light rain
Low: 11°C
High: 18°C
Sunday
Overcast clouds
Low: 9°C
High: 16°C
Monday
Overcast clouds
Low: 10°C
High: 16°C
Tuesday
Light rain
Low: 7°C
High: 13°C
Wednesday
Broken clouds
Low: 7°C
High: 11°C
Thursday
Light rain
Low: 10°C
High: 10°C
Average Weather and Climate for Slieve Bearnagh [Sliabh Bearnach] in September
Averages recorded at Belfast / Harbour. Based on reports collected in 1992–2021.
| High Temperature | 16 °C |
|---|---|
| Low Temperature | 11 °C |
| Mean Temperature | 14 °C |
| Precipitation | 57.8 mm |
| Humidity | 80 % |
| Dew Point | 10 °C |
| Wind | 17 mph |
| Pressure | 1014 mbar |
| Visibility | 10 km |