Annual Weather Averages Near Holyhead
Averages are for Valley, which is 6 miles from Holyhead.
Based on weather reports collected during 1992–2021.
All Year Climate & Weather Averages in Holyhead
High Temp: 65 °F
Low Temp: 39 °F
Mean Temp: 51 °F
Precipitation: 2.85"
Humidity: 82%
Dew Point: 46 °F
Wind: 26 mph
Pressure: 29.94 "Hg
Visibility: 10 mi
January Climate & Weather Averages in Holyhead
High Temp: 47 °F
Low Temp: 39 °F
Mean Temp: 43 °F
Precipitation: 3.02"
Humidity: 84%
Dew Point: 39 °F
Wind: 31 mph
Pressure: 29.92 "Hg
Visibility: 9 mi
February Climate & Weather Averages in Holyhead
High Temp: 47 °F
Low Temp: 39 °F
Mean Temp: 43 °F
Precipitation: 2.51"
Humidity: 84%
Dew Point: 38 °F
Wind: 30 mph
Pressure: 29.95 "Hg
Visibility: 9 mi
March Climate & Weather Averages in Holyhead
High Temp: 50 °F
Low Temp: 40 °F
Mean Temp: 45 °F
Precipitation: 2.23"
Humidity: 82%
Dew Point: 40 °F
Wind: 27 mph
Pressure: 29.98 "Hg
Visibility: 9 mi
April Climate & Weather Averages in Holyhead
High Temp: 53 °F
Low Temp: 43 °F
Mean Temp: 48 °F
Precipitation: 2.10"
Humidity: 80%
Dew Point: 42 °F
Wind: 23 mph
Pressure: 29.95 "Hg
Visibility: 10 mi
May Climate & Weather Averages in Holyhead
High Temp: 58 °F
Low Temp: 47 °F
Mean Temp: 53 °F
Precipitation: 2.17"
Humidity: 80%
Dew Point: 46 °F
Wind: 24 mph
Pressure: 29.98 "Hg
Visibility: 10 mi
June Climate & Weather Averages in Holyhead
High Temp: 63 °F
Low Temp: 52 °F
Mean Temp: 57 °F
Precipitation: 2.22"
Humidity: 81%
Dew Point: 51 °F
Wind: 22 mph
Pressure: 30.00 "Hg
Visibility: 11 mi
July Climate & Weather Averages in Holyhead
High Temp: 65 °F
Low Temp: 55 °F
Mean Temp: 60 °F
Precipitation: 2.27"
Humidity: 83%
Dew Point: 54 °F
Wind: 22 mph
Pressure: 29.97 "Hg
Visibility: 11 mi
August Climate & Weather Averages in Holyhead
High Temp: 65 °F
Low Temp: 56 °F
Mean Temp: 60 °F
Precipitation: 2.74"
Humidity: 83%
Dew Point: 55 °F
Wind: 23 mph
Pressure: 29.96 "Hg
Visibility: 12 mi
September Climate & Weather Averages in Holyhead
High Temp: 63 °F
Low Temp: 53 °F
Mean Temp: 58 °F
Precipitation: 2.89"
Humidity: 82%
Dew Point: 52 °F
Wind: 24 mph
Pressure: 29.98 "Hg
Visibility: 11 mi
October Climate & Weather Averages in Holyhead
High Temp: 58 °F
Low Temp: 49 °F
Mean Temp: 53 °F
Precipitation: 4.10"
Humidity: 82%
Dew Point: 48 °F
Wind: 28 mph
Pressure: 29.89 "Hg
Visibility: 11 mi
November Climate & Weather Averages in Holyhead
High Temp: 52 °F
Low Temp: 44 °F
Mean Temp: 48 °F
Precipitation: 4.07"
Humidity: 82%
Dew Point: 43 °F
Wind: 28 mph
Pressure: 29.86 "Hg
Visibility: 11 mi
December Climate & Weather Averages in Holyhead
High Temp: 49 °F
Low Temp: 40 °F
Mean Temp: 44 °F
Precipitation: 3.83"
Humidity: 84%
Dew Point: 40 °F
Wind: 31 mph
Pressure: 29.89 "Hg
Visibility: 10 mi