Currently: 66 °F. Passing clouds. (Weather station: Belfast / Harbour, United Kingdom). See more current weatherAnnual Weather Averages in Belfast / Harbour
Belfast / Harbour is 31 miles from Mourne Mountains, so the actual climate in Mourne Mountains can vary a bit.
Based on weather reports collected during 1992–2021.
All Year Climate & Weather Averages in Mourne Mountains
High Temp: 66 °F
Low Temp: 38 °F
Mean Temp: 50 °F
Precipitation: 2.36"
Humidity: 79%
Dew Point: 44 °F
Wind: 18 mph
Pressure: 29.90 "Hg
Visibility: 6 mi
January Climate & Weather Averages in Mourne Mountains
High Temp: 45 °F
Low Temp: 38 °F
Mean Temp: 42 °F
Precipitation: 2.90"
Humidity: 84%
Dew Point: 37 °F
Wind: 20 mph
Pressure: 29.86 "Hg
Visibility: 6 mi
February Climate & Weather Averages in Mourne Mountains
High Temp: 46 °F
Low Temp: 38 °F
Mean Temp: 42 °F
Precipitation: 2.58"
Humidity: 82%
Dew Point: 37 °F
Wind: 21 mph
Pressure: 29.89 "Hg
Visibility: 6 mi
March Climate & Weather Averages in Mourne Mountains
High Temp: 49 °F
Low Temp: 39 °F
Mean Temp: 44 °F
Precipitation: 1.90"
Humidity: 78%
Dew Point: 38 °F
Wind: 20 mph
Pressure: 29.93 "Hg
Visibility: 6 mi
April Climate & Weather Averages in Mourne Mountains
High Temp: 53 °F
Low Temp: 42 °F
Mean Temp: 48 °F
Precipitation: 1.59"
Humidity: 75%
Dew Point: 40 °F
Wind: 19 mph
Pressure: 29.93 "Hg
Visibility: 6 mi
May Climate & Weather Averages in Mourne Mountains
High Temp: 58 °F
Low Temp: 47 °F
Mean Temp: 53 °F
Precipitation: 1.85"
Humidity: 74%
Dew Point: 45 °F
Wind: 19 mph
Pressure: 29.96 "Hg
Visibility: 7 mi
June Climate & Weather Averages in Mourne Mountains
High Temp: 63 °F
Low Temp: 52 °F
Mean Temp: 58 °F
Precipitation: 2.03"
Humidity: 74%
Dew Point: 49 °F
Wind: 18 mph
Pressure: 29.98 "Hg
Visibility: 7 mi
July Climate & Weather Averages in Mourne Mountains
High Temp: 66 °F
Low Temp: 55 °F
Mean Temp: 60 °F
Precipitation: 2.11"
Humidity: 76%
Dew Point: 53 °F
Wind: 16 mph
Pressure: 29.93 "Hg
Visibility: 7 mi
August Climate & Weather Averages in Mourne Mountains
High Temp: 65 °F
Low Temp: 54 °F
Mean Temp: 60 °F
Precipitation: 2.47"
Humidity: 78%
Dew Point: 53 °F
Wind: 16 mph
Pressure: 29.92 "Hg
Visibility: 6 mi
September Climate & Weather Averages in Mourne Mountains
High Temp: 61 °F
Low Temp: 52 °F
Mean Temp: 56 °F
Precipitation: 2.28"
Humidity: 80%
Dew Point: 51 °F
Wind: 17 mph
Pressure: 29.95 "Hg
Visibility: 6 mi
October Climate & Weather Averages in Mourne Mountains
High Temp: 56 °F
Low Temp: 47 °F
Mean Temp: 51 °F
Precipitation: 3.04"
Humidity: 82%
Dew Point: 46 °F
Wind: 18 mph
Pressure: 29.84 "Hg
Visibility: 6 mi
November Climate & Weather Averages in Mourne Mountains
High Temp: 50 °F
Low Temp: 42 °F
Mean Temp: 46 °F
Precipitation: 2.82"
Humidity: 84%
Dew Point: 42 °F
Wind: 18 mph
Pressure: 29.81 "Hg
Visibility: 6 mi
December Climate & Weather Averages in Mourne Mountains
High Temp: 46 °F
Low Temp: 39 °F
Mean Temp: 42 °F
Precipitation: 2.76"
Humidity: 86%
Dew Point: 38 °F
Wind: 19 mph
Pressure: 29.83 "Hg
Visibility: 6 mi