Daily rainfall, frost and wind for Swansea against the 10-year average — the starting point for any weather delay conversation on site.
Weather delay record
SA1 1NW · 1 Feb 2025 – 28 Feb 2025
Rainfall over this period was 99% of the 10-year average for the same calendar window at this location. Conditions were broadly in line with typical for the time of year. 1 day had gusts at or above 47 mph.
Rainfall vs 10-yr avg
99%
127 mm vs 127 mm typical
Rain days >5mm
8
typical: 8.3
Frost days
1
typical: 3.8
High-wind days
1
gusts ≥ 47 mph
Daily record
| Date | Rain (mm) | Min °C | Max °C | Gust (mph) | Flags |
|---|---|---|---|---|---|
| 1 Feb 2025 | 0.0 | 2.0 | 7.8 | 25 | |
| 2 Feb 2025 | 0.0 | 5.5 | 8.3 | 28 | |
| 3 Feb 2025 | 0.6 | 6.5 | 10.0 | 27 | |
| 4 Feb 2025 | 7.9 | 6.8 | 9.7 | 39 | wet |
| 5 Feb 2025 | 0.0 | 1.3 | 8.5 | 19 | |
| 6 Feb 2025 | 0.0 | 1.2 | 7.9 | 26 | |
| 7 Feb 2025 | 0.0 | 2.6 | 5.3 | 35 | |
| 8 Feb 2025 | 0.0 | 2.1 | 5.1 | 23 | |
| 9 Feb 2025 | 0.4 | 4.2 | 7.8 | 23 | |
| 10 Feb 2025 | 0.2 | 4.2 | 6.2 | 26 | |
| 11 Feb 2025 | 0.0 | 2.0 | 6.1 | 16 | |
| 12 Feb 2025 | 0.0 | 2.7 | 6.0 | 23 | |
| 13 Feb 2025 | 0.0 | 2.2 | 4.5 | 32 | |
| 14 Feb 2025 | 4.3 | 2.6 | 4.7 | 38 | |
| 15 Feb 2025 | 9.9 | 4.2 | 8.0 | 25 | wet |
| 16 Feb 2025 | 0.0 | 3.2 | 6.1 | 28 | |
| 17 Feb 2025 | 0.0 | 1.0 | 6.6 | 35 | |
| 18 Feb 2025 | 0.0 | 2.0 | 7.0 | 33 | |
| 19 Feb 2025 | 8.5 | 4.5 | 10.3 | 34 | wet |
| 20 Feb 2025 | 29.6 | 10.3 | 12.8 | 44 | wet |
| 21 Feb 2025 | 9.6 | 8.8 | 12.2 | 51 | wet · wind |
| 22 Feb 2025 | 3.4 | 7.5 | 11.8 | 25 | |
| 23 Feb 2025 | 28.2 | 7.3 | 10.6 | 47 | wet |
| 24 Feb 2025 | 12.3 | 7.4 | 11.4 | 32 | wet |
| 25 Feb 2025 | 0.8 | 2.9 | 9.8 | 26 | |
| 26 Feb 2025 | 10.7 | 4.7 | 9.0 | 32 | wet |
| 27 Feb 2025 | 0.2 | 3.4 | 9.6 | 29 | |
| 28 Feb 2025 | 0.0 | -0.7 | 8.5 | 14 | frost |
8 days with rainfall over 5 mm in this period.
Data: ERA5 reanalysis via Open-Meteo, taken at the nearest model grid point to the postcode — not a Met Office station record. Baselines are the mean of the same calendar months over the previous 10 years at this location. Whether conditions meet a contractual test (e.g. JCT “exceptionally adverse weather” or an NEC 1-in-10-year event) is a matter for the contract — this is a factual weather record, not advice.
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