Full Climatology For Swansea
Long Term Averages
| JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANNUAL | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean Max (°C) | 23.3 | 22.7 | 21.3 | 18.8 | 16.2 | 13.9 | 13.8 | 14.5 | 16.7 | 17.7 | 19.5 | 21.4 | 18.3 |
| Mean Min (°C) | 12.7 | 12.2 | 11.2 | 8.5 | 6.4 | 4.9 | 4.3 | 4.5 | 6.1 | 7.5 | 9.4 | 11.1 | 8.2 |
| Mean Rain (mm) | 48.6 | 31.4 | 45.0 | 34.5 | 40.9 | 61.0 | 29.8 | 35.5 | 39.6 | 55.7 | 64.7 | 60.6 | 551.4 |
| Rain Days | 9.0 | 9.0 | 10.0 | 9.0 | 9.0 | 10.0 | 9.0 | 12.0 | 10.0 | 12.0 | 13.0 | 10.0 | 129.0 |
Daily Records
| JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANNUAL | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High Max (°C) | 39.6 | 38.6 | 33.2 | 31.0 | 23.9 | 19.9 | 19.5 | 20.0 | 27.5 | 29.9 | 35.9 | 41.1 | 41.1 |
| Low Max (°C) | 15.7 | 14.5 | 13.9 | 11.3 | 10.5 | 9.5 | 8.1 | 8.2 | 9.6 | 10.9 | 10.9 | 13.7 | 8.1 |
| High Min (°C) | 19.9 | 23.2 | 19.5 | 17.1 | 15.5 | 15.0 | 12.9 | 13.8 | 14.2 | 16.4 | 18.1 | 18.5 | 23.2 |
| Low Min (°C) | 5.9 | 5.3 | 2.8 | 1.0 | -1.0 | -2.1 | -2.9 | -2.8 | -2.1 | -0.1 | 0.8 | 3.7 | -2.9 |
| High Rain (mm) | 124.0 | 49.8 | 79.8 | 60.4 | 78.0 | 76.6 | 32.8 | 40.6 | 45.8 | 39.2 | 61.0 | 68.6 | 124.0 |
Monthly Records
| JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANNUAL | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High Mean Max (°C) | 26.1 | 24.8 | 23.5 | 20.6 | 17.7 | 14.7 | 15.2 | 15.9 | 18.2 | 19.7 | 21.2 | 22.9 | 19.0 |
| Low Mean Max (°C) | 21.7 | 20.6 | 19.6 | 17.0 | 15.5 | 12.9 | 12.8 | 12.9 | 16.0 | 16.0 | 16.9 | 19.0 | 17.3 |
| High Mean Min (°C) | 14.1 | 13.7 | 12.4 | 9.8 | 8.0 | 6.4 | 6.2 | 6.9 | 7.1 | 8.5 | 10.5 | 13.0 | 9.0 |
| Low Mean Min (°C) | 11.7 | 10.9 | 9.1 | 7.6 | 5.3 | 4.0 | 2.4 | 2.7 | 4.9 | 6.5 | 8.1 | 9.9 | 7.9 |
| High Rain (mm) | 242.4 | 66.1 | 107.0 | 94.2 | 114.8 | 191.0 | 63.4 | 125.6 | 138.4 | 169.0 | 230.4 | 111.4 | 965.2 |
| Low Rain (mm) | 2.2 | 8.6 | 13.8 | 9.4 | 11.0 | 0.6 | 5.8 | 9.7 | 9.3 | 12.2 | 16.6 | 19.0 | 318.6 |
Average Number of Days with Temperatures
| JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANNUAL | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ≥ 40.0°C | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.1 |
| ≥ 35.0°C | 0.9 | 0.4 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.1 | 1.5 |
| ≥ 30.0°C | 2.4 | 1.9 | 0.8 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.7 | 0.6 | 6.5 |
| ≤ 2.0°C | 0.0 | 0.0 | 0.0 | 0.4 | 3.0 | 6.1 | 8.4 | 7.2 | 3.3 | 1.1 | 0.1 | 0.0 | 29.4 |
| ≤ 0.0°C | 0.0 | 0.0 | 0.0 | 0.0 | 0.4 | 1.6 | 2.9 | 2.6 | 0.7 | 0.1 | 0.0 | 0.0 | 8.5 |