Daily rainfall, frost and wind for Belfast against the 10-year average — the starting point for any weather delay conversation on site.
Weather delay record
BT1 5GS · 1 Apr 2025 – 30 Apr 2025
Rainfall over this period was 111% 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
111%
74 mm vs 66 mm typical
Rain days >5mm
5
typical: 4.6
Frost days
0
typical: 1.4
High-wind days
0
gusts ≥ 47 mph
Daily record
| Date | Rain (mm) | Min °C | Max °C | Gust (mph) | Flags |
|---|---|---|---|---|---|
| 1 Apr 2025 | 0.0 | 6.4 | 12.4 | 27 | |
| 2 Apr 2025 | 0.0 | 6.1 | 12.7 | 25 | |
| 3 Apr 2025 | 0.0 | 5.6 | 14.4 | 29 | |
| 4 Apr 2025 | 0.0 | 7.8 | 14.5 | 26 | |
| 5 Apr 2025 | 0.0 | 4.9 | 11.5 | 29 | |
| 6 Apr 2025 | 0.0 | 5.2 | 11.4 | 24 | |
| 7 Apr 2025 | 0.0 | 3.3 | 13.6 | 17 | |
| 8 Apr 2025 | 0.0 | 3.4 | 15.2 | 14 | |
| 9 Apr 2025 | 0.0 | 5.0 | 14.0 | 15 | |
| 10 Apr 2025 | 0.0 | 3.2 | 18.9 | 13 | |
| 11 Apr 2025 | 0.0 | 4.8 | 19.3 | 17 | |
| 12 Apr 2025 | 1.7 | 4.6 | 14.7 | 17 | |
| 13 Apr 2025 | 0.7 | 4.6 | 10.8 | 28 | |
| 14 Apr 2025 | 2.5 | 4.1 | 11.6 | 26 | |
| 15 Apr 2025 | 0.0 | 3.7 | 11.5 | 26 | |
| 16 Apr 2025 | 17.4 | 5.6 | 7.5 | 32 | wet |
| 17 Apr 2025 | 0.5 | 3.9 | 11.7 | 23 | |
| 18 Apr 2025 | 12.6 | 5.2 | 9.4 | 30 | wet |
| 19 Apr 2025 | 7.5 | 7.8 | 10.3 | 29 | wet |
| 20 Apr 2025 | 0.5 | 6.7 | 10.8 | 26 | |
| 21 Apr 2025 | 7.8 | 6.8 | 12.0 | 22 | wet |
| 22 Apr 2025 | 8.1 | 4.7 | 12.6 | 38 | wet |
| 23 Apr 2025 | 5.0 | 7.8 | 14.1 | 28 | |
| 24 Apr 2025 | 0.0 | 5.9 | 12.7 | 27 | |
| 25 Apr 2025 | 3.3 | 9.1 | 11.7 | 32 | |
| 26 Apr 2025 | 3.8 | 9.5 | 14.7 | 25 | |
| 27 Apr 2025 | 2.5 | 10.9 | 15.8 | 31 | |
| 28 Apr 2025 | 0.2 | 10.1 | 16.2 | 23 | |
| 29 Apr 2025 | 0.0 | 6.9 | 18.8 | 17 | |
| 30 Apr 2025 | 0.0 | 9.8 | 20.2 | 17 |
5 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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