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 Jul 2025 – 31 Jul 2025
Rainfall over this period was 72% 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.
Rainfall vs 10-yr avg
72%
79 mm vs 109 mm typical
Rain days >5mm
6
typical: 6.3
Frost days
0
typical: 0.0
High-wind days
0
gusts ≥ 47 mph
Daily record
| Date | Rain (mm) | Min °C | Max °C | Gust (mph) | Flags |
|---|---|---|---|---|---|
| 1 Jul 2025 | 0.0 | 16.1 | 22.5 | 19 | |
| 2 Jul 2025 | 0.1 | 13.1 | 18.8 | 26 | |
| 3 Jul 2025 | 0.1 | 11.2 | 19.6 | 23 | |
| 4 Jul 2025 | 0.2 | 13.0 | 19.6 | 33 | |
| 5 Jul 2025 | 8.8 | 16.0 | 18.8 | 34 | wet |
| 6 Jul 2025 | 1.4 | 15.1 | 17.9 | 32 | |
| 7 Jul 2025 | 1.3 | 13.0 | 18.0 | 32 | |
| 8 Jul 2025 | 0.2 | 11.7 | 20.2 | 21 | |
| 9 Jul 2025 | 0.3 | 13.1 | 23.5 | 18 | |
| 10 Jul 2025 | 0.0 | 14.0 | 26.5 | 15 | |
| 11 Jul 2025 | 0.0 | 14.6 | 29.9 | 12 | |
| 12 Jul 2025 | 0.0 | 17.1 | 30.4 | 21 | |
| 13 Jul 2025 | 0.0 | 18.5 | 28.1 | 22 | |
| 14 Jul 2025 | 2.5 | 15.7 | 19.5 | 38 | |
| 15 Jul 2025 | 8.0 | 14.2 | 17.7 | 43 | wet |
| 16 Jul 2025 | 2.9 | 13.5 | 20.8 | 27 | |
| 17 Jul 2025 | 2.8 | 16.6 | 20.8 | 21 | |
| 18 Jul 2025 | 8.8 | 15.6 | 20.6 | 19 | wet |
| 19 Jul 2025 | 2.4 | 14.9 | 20.1 | 24 | |
| 20 Jul 2025 | 12.8 | 15.0 | 18.7 | 34 | wet |
| 21 Jul 2025 | 2.6 | 11.5 | 18.4 | 24 | |
| 22 Jul 2025 | 3.2 | 15.0 | 19.5 | 23 | |
| 23 Jul 2025 | 0.7 | 12.9 | 20.1 | 27 | |
| 24 Jul 2025 | 0.0 | 13.1 | 21.3 | 23 | |
| 25 Jul 2025 | 0.5 | 12.0 | 21.0 | 21 | |
| 26 Jul 2025 | 0.4 | 15.4 | 20.4 | 25 | |
| 27 Jul 2025 | 3.0 | 13.9 | 19.2 | 19 | |
| 28 Jul 2025 | 0.8 | 12.7 | 20.1 | 20 | |
| 29 Jul 2025 | 7.0 | 13.5 | 20.0 | 28 | wet |
| 30 Jul 2025 | 0.7 | 14.6 | 22.3 | 22 | |
| 31 Jul 2025 | 7.0 | 15.4 | 22.3 | 25 | wet |
6 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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