Daily rainfall, frost and wind for Cardiff against the 10-year average — the starting point for any weather delay conversation on site.
Weather delay record
CF10 1EP · 1 Apr 2025 – 30 Apr 2025
Rainfall over this period was 137% of the 10-year average for the same calendar window at this location. Conditions were materially wetter than typical for the time of year. 1 day had gusts at or above 47 mph.
Rainfall vs 10-yr avg
137%
93 mm vs 68 mm typical
Rain days >5mm
8
typical: 5.6
Frost days
0
typical: 0.6
High-wind days
1
gusts ≥ 47 mph
Daily record
| Date | Rain (mm) | Min °C | Max °C | Gust (mph) | Flags |
|---|---|---|---|---|---|
| 1 Apr 2025 | 0.0 | 4.9 | 14.2 | 30 | |
| 2 Apr 2025 | 0.0 | 6.1 | 15.1 | 38 | |
| 3 Apr 2025 | 1.0 | 7.1 | 17.5 | 37 | |
| 4 Apr 2025 | 1.9 | 10.6 | 19.6 | 33 | |
| 5 Apr 2025 | 0.0 | 6.6 | 16.9 | 39 | |
| 6 Apr 2025 | 0.0 | 4.6 | 15.7 | 30 | |
| 7 Apr 2025 | 0.0 | 4.5 | 14.9 | 23 | |
| 8 Apr 2025 | 0.0 | 4.6 | 15.0 | 19 | |
| 9 Apr 2025 | 0.0 | 5.9 | 15.3 | 22 | |
| 10 Apr 2025 | 0.0 | 4.1 | 13.2 | 16 | |
| 11 Apr 2025 | 0.0 | 3.8 | 17.4 | 14 | |
| 12 Apr 2025 | 0.0 | 7.7 | 17.4 | 24 | |
| 13 Apr 2025 | 0.0 | 8.5 | 12.0 | 29 | |
| 14 Apr 2025 | 5.1 | 7.0 | 12.4 | 33 | wet |
| 15 Apr 2025 | 26.5 | 8.9 | 13.0 | 26 | wet |
| 16 Apr 2025 | 5.3 | 6.0 | 11.1 | 56 | wet · wind |
| 17 Apr 2025 | 0.1 | 2.1 | 13.2 | 18 | |
| 18 Apr 2025 | 10.4 | 8.6 | 11.0 | 36 | wet |
| 19 Apr 2025 | 10.1 | 9.8 | 15.8 | 26 | wet |
| 20 Apr 2025 | 0.2 | 5.4 | 14.8 | 25 | |
| 21 Apr 2025 | 8.8 | 9.1 | 12.8 | 33 | wet |
| 22 Apr 2025 | 4.3 | 7.9 | 13.6 | 39 | |
| 23 Apr 2025 | 13.5 | 8.2 | 13.9 | 40 | wet |
| 24 Apr 2025 | 0.0 | 8.2 | 14.4 | 21 | |
| 25 Apr 2025 | 0.0 | 8.7 | 14.0 | 25 | |
| 26 Apr 2025 | 5.5 | 9.2 | 13.9 | 16 | wet |
| 27 Apr 2025 | 0.0 | 7.3 | 16.3 | 19 | |
| 28 Apr 2025 | 0.0 | 7.1 | 18.6 | 13 | |
| 29 Apr 2025 | 0.0 | 9.2 | 21.6 | 18 | |
| 30 Apr 2025 | 0.0 | 10.6 | 22.8 | 16 |
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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