Swansea, Wales Climate
United Kingdom
Pop. 300,352 Elev. 18 m / 59 ft
TZ: Europe/London (UTC+1) ·
Swansea enjoys a mild climate with limited seasonal extremes, ranging from 40°F (4°C) in January to 67°F (19°C) in August. Precipitation occurs on roughly 100 days per year (58.9 in / 1497 mm total), with 2 in (46 mm) of annual snowfall. The city averages 74 sunny days per year and around 39 thunderstorm days. Ocean water temperatures reach 67°F (19°C) in summer.
| Temperature | 20°C (67°F) high | 4°C (40°F) low |
| Feels like | 3°C (37°F) low | |
| Rain | 100 days | 1497 mm (58.9 in) /yr |
| Snow | 0 days | 46 mm (1.8 in) /yr |
| Sky | 74 sunny | 39 stormy |
| Wind | 2.5 m/s (5.5 mph) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: May, Jun, Jul, Aug
Sky & Air by Month
Cloud cover (%)
72
Jan 75
Feb 55
Mar 51
Apr 54
May 68
Jun 59
Jul 59
Aug 64
Sep 78
Oct 70
Nov 70
Dec Humidity (%)
82
Jan 83
Feb 79
Mar 76
Apr 76
May 83
Jun 79
Jul 76
Aug 80
Sep 81
Oct 83
Nov 83
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 48 km Cardiff International Airport (CWL)
Ski resort 26 km
National park 51 km
Hospital 0 km Weavers House
Hiking trail 10 km St Illtyd's Walk
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 7°C 45°F | 4°C 40°F | 131 mm 5.2 in | 46 mm1.8 in | 5 |
| February | 8°C 46°F | 5°C 42°F | 101 mm 4.0 in | — | 3 |
| March | 10°C 51°F | 6°C 43°F | 24 mm 0.9 in | — | 13 |
| April | 13°C 56°F | 8°C 47°F | 92 mm 3.6 in | — | 11 |
| May | 16°C 60°F | 11°C 52°F | 48 mm 1.9 in | — | 12 |
| June | 17°C 62°F | 14°C 57°F | 109 mm 4.3 in | — | 2 |
| July | 19°C 66°F | 16°C 60°F | 59 mm 2.3 in | — | 7 |
| August | 20°C 67°F | 16°C 60°F | 78 mm 3.1 in | — | 6 |
| September | 16°C 61°F | 13°C 55°F | 220 mm 8.7 in | — | 7 |
| October | 14°C 57°F | 12°C 53°F | 151 mm 5.9 in | — | 1 |
| November | 12°C 53°F | 9°C 48°F | 255 mm 10.0 in | — | 3 |
| December | 10°C 50°F | 7°C 45°F | 229 mm 9.0 in | — | 4 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 5 | 3 |
| February | 3 | 1 |
| March | 13 | 0 |
| April | 11 | 2 |
| May | 12 | 1 |
| June | 2 | 2 |
| July | 7 | 1 |
| August | 6 | 3 |
| September | 7 | 9 |
| October | 1 | 3 |
| November | 3 | 8 |
| December | 4 | 6 |
Water Temperatures Data
↑ See chart| Month | Ocean Avg High | Lake Avg High |
|---|---|---|
| January | 9°C 49°F | 6°C 43°F |
| February | 8°C 47°F | 5°C 41°F |
| March | 10°C 49°F | 6°C 44°F |
| April | 12°C 53°F | 9°C 48°F |
| May | 14°C 58°F | 12°C 54°F |
| June | 17°C 63°F | 16°C 61°F |
| July | 19°C 66°F | 18°C 65°F |
| August | 19°C 67°F | 18°C 64°F |
| September | 19°C 65°F | 15°C 59°F |
| October | 16°C 61°F | 13°C 55°F |
| November | 14°C 57°F | 10°C 51°F |
| December | 11°C 52°F | 8°C 46°F |