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 Jul 2025 – 31 Jul 2025
Rainfall over this period was 85% 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
85%
82 mm vs 96 mm typical
Rain days >5mm
3
typical: 6.5
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 | 10.6 | 17.1 | 19 | |
| 2 Jul 2025 | 0.6 | 8.7 | 16.5 | 28 | |
| 3 Jul 2025 | 7.4 | 8.9 | 17.5 | 36 | wet |
| 4 Jul 2025 | 1.7 | 12.8 | 16.5 | 43 | |
| 5 Jul 2025 | 0.8 | 14.5 | 18.8 | 37 | |
| 6 Jul 2025 | 1.7 | 12.3 | 17.5 | 30 | |
| 7 Jul 2025 | 0.0 | 11.1 | 18.0 | 38 | |
| 8 Jul 2025 | 0.2 | 10.2 | 19.4 | 22 | |
| 9 Jul 2025 | 0.3 | 14.7 | 22.3 | 21 | |
| 10 Jul 2025 | 0.0 | 14.0 | 24.8 | 20 | |
| 11 Jul 2025 | 0.0 | 12.1 | 24.5 | 24 | |
| 12 Jul 2025 | 0.0 | 12.5 | 28.1 | 23 | |
| 13 Jul 2025 | 0.0 | 16.0 | 26.0 | 30 | |
| 14 Jul 2025 | 3.7 | 14.5 | 19.6 | 37 | |
| 15 Jul 2025 | 19.9 | 12.8 | 18.4 | 23 | wet |
| 16 Jul 2025 | 0.0 | 12.3 | 20.5 | 20 | |
| 17 Jul 2025 | 4.7 | 12.8 | 19.9 | 26 | |
| 18 Jul 2025 | 4.6 | 14.6 | 20.0 | 22 | |
| 19 Jul 2025 | 1.7 | 13.7 | 19.2 | 23 | |
| 20 Jul 2025 | 2.8 | 14.0 | 21.0 | 23 | |
| 21 Jul 2025 | 15.4 | 15.0 | 18.9 | 23 | wet |
| 22 Jul 2025 | 0.9 | 14.2 | 18.1 | 21 | |
| 23 Jul 2025 | 3.3 | 12.6 | 18.4 | 23 | |
| 24 Jul 2025 | 0.0 | 11.8 | 19.2 | 18 | |
| 25 Jul 2025 | 0.6 | 13.5 | 18.9 | 21 | |
| 26 Jul 2025 | 2.6 | 13.4 | 18.9 | 25 | |
| 27 Jul 2025 | 3.4 | 13.0 | 17.0 | 25 | |
| 28 Jul 2025 | 1.1 | 12.7 | 18.5 | 21 | |
| 29 Jul 2025 | 3.4 | 13.1 | 20.5 | 23 | |
| 30 Jul 2025 | 1.0 | 14.3 | 20.4 | 25 | |
| 31 Jul 2025 | 0.3 | 12.2 | 18.3 | 28 |
3 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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