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 Jun 2026 – 30 Jun 2026
Rainfall over this period was 184% of the 10-year average for the same calendar window at this location. Conditions were materially wetter than typical for the time of year.
Rainfall vs 10-yr avg
184%
162 mm vs 88 mm typical
Rain days >5mm
13
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 Jun 2026 | 14.2 | 13.9 | 17.9 | 26 | wet |
| 2 Jun 2026 | 10.6 | 11.1 | 18.0 | 24 | wet |
| 3 Jun 2026 | 15.8 | 10.1 | 16.3 | 34 | wet |
| 4 Jun 2026 | 10.3 | 10.3 | 15.4 | 37 | wet |
| 5 Jun 2026 | 1.3 | 8.3 | 13.8 | 28 | |
| 6 Jun 2026 | 4.4 | 10.3 | 14.7 | 27 | |
| 7 Jun 2026 | 14.4 | 10.4 | 15.7 | 36 | wet |
| 8 Jun 2026 | 7.8 | 8.1 | 14.5 | 24 | wet |
| 9 Jun 2026 | 4.7 | 6.9 | 13.2 | 34 | |
| 10 Jun 2026 | 5.7 | 6.8 | 14.0 | 25 | wet |
| 11 Jun 2026 | 13.4 | 9.1 | 17.0 | 34 | wet |
| 12 Jun 2026 | 1.5 | 11.2 | 15.5 | 43 | |
| 13 Jun 2026 | 0.1 | 10.8 | 15.5 | 34 | |
| 14 Jun 2026 | 0.0 | 9.9 | 16.1 | 15 | |
| 15 Jun 2026 | 1.9 | 11.0 | 16.0 | 26 | |
| 16 Jun 2026 | 1.3 | 11.4 | 18.0 | 23 | |
| 17 Jun 2026 | 4.1 | 13.3 | 18.7 | 30 | |
| 18 Jun 2026 | 9.7 | 13.3 | 18.4 | 28 | wet |
| 19 Jun 2026 | 17.4 | 13.2 | 17.9 | 34 | wet |
| 20 Jun 2026 | 1.0 | 11.5 | 17.8 | 20 | |
| 21 Jun 2026 | 0.0 | 10.6 | 18.3 | 17 | |
| 22 Jun 2026 | 0.2 | 13.4 | 21.7 | 14 | |
| 23 Jun 2026 | 0.2 | 13.9 | 26.4 | 19 | |
| 24 Jun 2026 | 0.0 | 14.9 | 22.7 | 18 | |
| 25 Jun 2026 | 0.0 | 14.9 | 27.3 | 22 | |
| 26 Jun 2026 | 7.4 | 17.1 | 23.0 | 26 | wet |
| 27 Jun 2026 | 2.4 | 16.0 | 20.2 | 43 | |
| 28 Jun 2026 | 0.9 | 13.3 | 17.2 | 37 | |
| 29 Jun 2026 | 5.8 | 11.4 | 18.8 | 27 | wet |
| 30 Jun 2026 | 5.8 | 13.0 | 19.1 | 29 | wet |
13 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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