Annual Weather Averages Near Swansea
Averages are for Mumbles, which is 4 miles from Swansea.
Based on weather reports collected during 2012–2021.
All Year Climate & Weather Averages in Swansea
High Temp: 67 °F
Low Temp: 40 °F
Mean Temp: 52 °F
Precipitation: 3.53"
Humidity: 82%
Dew Point: 47 °F
Wind: 28 mph
Pressure: 29.99 "Hg
Visibility: N/A
January Climate & Weather Averages in Swansea
High Temp: 47 °F
Low Temp: 41 °F
Mean Temp: 44 °F
Precipitation: 4.99"
Humidity: 86%
Dew Point: 40 °F
Wind: 31 mph
Pressure: 29.95 "Hg
Visibility: N/A
February Climate & Weather Averages in Swansea
High Temp: 47 °F
Low Temp: 40 °F
Mean Temp: 43 °F
Precipitation: 3.37"
Humidity: 83%
Dew Point: 38 °F
Wind: 33 mph
Pressure: 29.96 "Hg
Visibility: N/A
March Climate & Weather Averages in Swansea
High Temp: 49 °F
Low Temp: 41 °F
Mean Temp: 45 °F
Precipitation: 2.89"
Humidity: 81%
Dew Point: 40 °F
Wind: 27 mph
Pressure: 30.01 "Hg
Visibility: N/A
April Climate & Weather Averages in Swansea
High Temp: 54 °F
Low Temp: 44 °F
Mean Temp: 49 °F
Precipitation: 1.93"
Humidity: 77%
Dew Point: 41 °F
Wind: 24 mph
Pressure: 30.00 "Hg
Visibility: N/A
May Climate & Weather Averages in Swansea
High Temp: 59 °F
Low Temp: 49 °F
Mean Temp: 54 °F
Precipitation: 2.55"
Humidity: 79%
Dew Point: 47 °F
Wind: 24 mph
Pressure: 30.01 "Hg
Visibility: N/A
June Climate & Weather Averages in Swansea
High Temp: 64 °F
Low Temp: 55 °F
Mean Temp: 59 °F
Precipitation: 2.77"
Humidity: 81%
Dew Point: 53 °F
Wind: 25 mph
Pressure: 30.02 "Hg
Visibility: N/A
July Climate & Weather Averages in Swansea
High Temp: 67 °F
Low Temp: 58 °F
Mean Temp: 63 °F
Precipitation: 2.70"
Humidity: 80%
Dew Point: 56 °F
Wind: 25 mph
Pressure: 30.02 "Hg
Visibility: N/A
August Climate & Weather Averages in Swansea
High Temp: 67 °F
Low Temp: 58 °F
Mean Temp: 62 °F
Precipitation: 3.91"
Humidity: 82%
Dew Point: 56 °F
Wind: 28 mph
Pressure: 29.99 "Hg
Visibility: N/A
September Climate & Weather Averages in Swansea
High Temp: 64 °F
Low Temp: 55 °F
Mean Temp: 60 °F
Precipitation: 2.98"
Humidity: 81%
Dew Point: 53 °F
Wind: 26 mph
Pressure: 30.05 "Hg
Visibility: N/A
October Climate & Weather Averages in Swansea
High Temp: 59 °F
Low Temp: 51 °F
Mean Temp: 55 °F
Precipitation: 4.56"
Humidity: 82%
Dew Point: 49 °F
Wind: 31 mph
Pressure: 29.95 "Hg
Visibility: N/A
November Climate & Weather Averages in Swansea
High Temp: 53 °F
Low Temp: 45 °F
Mean Temp: 49 °F
Precipitation: 4.79"
Humidity: 83%
Dew Point: 44 °F
Wind: 29 mph
Pressure: 29.92 "Hg
Visibility: N/A
December Climate & Weather Averages in Swansea
High Temp: 50 °F
Low Temp: 43 °F
Mean Temp: 47 °F
Precipitation: 4.98"
Humidity: 87%
Dew Point: 43 °F
Wind: 33 mph
Pressure: 29.94 "Hg
Visibility: N/A