| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean daily maximum °C (°F) | 8.3 (46.9) |
8.5 (47.3) |
10.3 (50.5) |
12.9 (55.2) |
15.9 (60.6) |
18.1 (64.6) |
19.8 (67.6) |
19.7 (67.5) |
18.0 (64.4) |
14.8 (58.6) |
11.4 (52.5) |
9.0 (48.2) |
13.9 (57.0) |
| Mean daily minimum °C (°F) | 2.7 (36.9) |
2.6 (36.7) |
3.6 (38.5) |
5.2 (41.4) |
7.8 (46.0) |
10.6 (51.1) |
12.7 (54.9) |
12.6 (54.7) |
10.6 (51.1) |
8.2 (46.8) |
5.2 (41.4) |
3.2 (37.8) |
7.1 (44.8) |
| Average rainfall mm (inches) | 113.5 (4.47) |
81.9 (3.22) |
71.2 (2.80) |
67.9 (2.67) |
68.8 (2.71) |
73.3 (2.89) |
73.9 (2.91) |
95.4 (3.76) |
78.4 (3.09) |
123.4 (4.86) |
129.4 (5.09) |
125.4 (4.94) |
1,102.5 (43.41) |
| Average rainy days (≥ 1 mm) | 16.1 | 13.1 | 12.6 | 11.3 | 10.5 | 10.6 | 10.9 | 12.0 | 11.4 | 15.6 | 16.9 | 16.2 | 157.3 |
| Source: Met Office[1] | |||||||||||||
- ^ "Pembrey Sands (Carmarthenshire) UK climate averages - Met Office". Met Office. Retrieved July 6, 2024.