Annual Weather Averages in Belfast / Aldergrove Airport
Belfast / Aldergrove Airport is 34 miles from Newry and Mourne District, so the actual climate in Newry and Mourne District can vary a bit.
Based on weather reports collected during 1992–2021.
All Year Climate & Weather Averages in Newry and Mourne District
High Temp: 66 °F
Low Temp: 34 °F
Mean Temp: 48 °F
Precipitation: 2.81"
Humidity: 84%
Dew Point: 44 °F
Wind: 18 mph
Pressure: 29.91 "Hg
Visibility: 9 mi
January Climate & Weather Averages in Newry and Mourne District
High Temp: 45 °F
Low Temp: 34 °F
Mean Temp: 40 °F
Precipitation: 2.97"
Humidity: 89%
Dew Point: 37 °F
Wind: 20 mph
Pressure: 29.86 "Hg
Visibility: 8 mi
February Climate & Weather Averages in Newry and Mourne District
High Temp: 46 °F
Low Temp: 34 °F
Mean Temp: 40 °F
Precipitation: 2.49"
Humidity: 87%
Dew Point: 37 °F
Wind: 21 mph
Pressure: 29.90 "Hg
Visibility: 9 mi
March Climate & Weather Averages in Newry and Mourne District
High Temp: 49 °F
Low Temp: 35 °F
Mean Temp: 42 °F
Precipitation: 2.33"
Humidity: 84%
Dew Point: 38 °F
Wind: 20 mph
Pressure: 29.94 "Hg
Visibility: 9 mi
April Climate & Weather Averages in Newry and Mourne District
High Temp: 54 °F
Low Temp: 37 °F
Mean Temp: 45 °F
Precipitation: 2.08"
Humidity: 80%
Dew Point: 40 °F
Wind: 18 mph
Pressure: 29.94 "Hg
Visibility: 9 mi
May Climate & Weather Averages in Newry and Mourne District
High Temp: 59 °F
Low Temp: 41 °F
Mean Temp: 50 °F
Precipitation: 2.33"
Humidity: 78%
Dew Point: 44 °F
Wind: 17 mph
Pressure: 29.96 "Hg
Visibility: 10 mi
June Climate & Weather Averages in Newry and Mourne District
High Temp: 64 °F
Low Temp: 47 °F
Mean Temp: 55 °F
Precipitation: 2.56"
Humidity: 79%
Dew Point: 49 °F
Wind: 16 mph
Pressure: 29.98 "Hg
Visibility: 10 mi
July Climate & Weather Averages in Newry and Mourne District
High Temp: 66 °F
Low Temp: 50 °F
Mean Temp: 58 °F
Precipitation: 3.00"
Humidity: 81%
Dew Point: 53 °F
Wind: 15 mph
Pressure: 29.94 "Hg
Visibility: 11 mi
August Climate & Weather Averages in Newry and Mourne District
High Temp: 65 °F
Low Temp: 49 °F
Mean Temp: 57 °F
Precipitation: 3.44"
Humidity: 83%
Dew Point: 53 °F
Wind: 15 mph
Pressure: 29.93 "Hg
Visibility: 10 mi
September Climate & Weather Averages in Newry and Mourne District
High Temp: 62 °F
Low Temp: 46 °F
Mean Temp: 54 °F
Precipitation: 2.61"
Humidity: 85%
Dew Point: 51 °F
Wind: 16 mph
Pressure: 29.95 "Hg
Visibility: 9 mi
October Climate & Weather Averages in Newry and Mourne District
High Temp: 56 °F
Low Temp: 41 °F
Mean Temp: 49 °F
Precipitation: 3.28"
Humidity: 87%
Dew Point: 46 °F
Wind: 18 mph
Pressure: 29.85 "Hg
Visibility: 9 mi
November Climate & Weather Averages in Newry and Mourne District
High Temp: 50 °F
Low Temp: 37 °F
Mean Temp: 44 °F
Precipitation: 3.33"
Humidity: 89%
Dew Point: 42 °F
Wind: 18 mph
Pressure: 29.82 "Hg
Visibility: 9 mi
December Climate & Weather Averages in Newry and Mourne District
High Temp: 46 °F
Low Temp: 35 °F
Mean Temp: 40 °F
Precipitation: 3.28"
Humidity: 90%
Dew Point: 39 °F
Wind: 19 mph
Pressure: 29.84 "Hg
Visibility: 9 mi