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 Mar 2026 – 31 Mar 2026
Rainfall over this period was 90% 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. 3 days had gusts at or above 47 mph.
Rainfall vs 10-yr avg
90%
67 mm vs 75 mm typical
Rain days >5mm
3
typical: 4.6
Frost days
2
typical: 4.0
High-wind days
3
gusts ≥ 47 mph
Daily record
| Date | Rain (mm) | Min °C | Max °C | Gust (mph) | Flags |
|---|---|---|---|---|---|
| 1 Mar 2026 | 4.5 | 6.1 | 11.3 | 49 | wind |
| 2 Mar 2026 | 1.5 | 4.8 | 10.2 | 45 | |
| 3 Mar 2026 | 0.0 | -1.1 | 9.5 | 15 | frost |
| 4 Mar 2026 | 0.5 | 2.1 | 11.7 | 29 | |
| 5 Mar 2026 | 14.9 | 4.5 | 9.5 | 29 | wet |
| 6 Mar 2026 | 0.0 | -1.9 | 8.4 | 14 | frost |
| 7 Mar 2026 | 0.0 | 2.7 | 10.0 | 31 | |
| 8 Mar 2026 | 0.0 | 4.1 | 9.2 | 26 | |
| 9 Mar 2026 | 1.9 | 5.7 | 10.7 | 21 | |
| 10 Mar 2026 | 2.1 | 5.5 | 11.1 | 44 | |
| 11 Mar 2026 | 0.1 | 5.7 | 10.2 | 41 | |
| 12 Mar 2026 | 11.5 | 3.8 | 10.5 | 51 | wet · wind |
| 13 Mar 2026 | 1.7 | 1.2 | 7.7 | 43 | |
| 14 Mar 2026 | 0.2 | 1.0 | 8.8 | 26 | |
| 15 Mar 2026 | 3.2 | 2.6 | 8.3 | 44 | |
| 16 Mar 2026 | 1.1 | 2.0 | 11.5 | 36 | |
| 17 Mar 2026 | 0.3 | 10.0 | 12.2 | 42 | |
| 18 Mar 2026 | 0.3 | 7.3 | 11.8 | 20 | |
| 19 Mar 2026 | 0.0 | 6.2 | 13.0 | 17 | |
| 20 Mar 2026 | 0.0 | 3.0 | 15.0 | 16 | |
| 21 Mar 2026 | 0.0 | 0.9 | 13.7 | 15 | |
| 22 Mar 2026 | 0.1 | 5.4 | 12.5 | 20 | |
| 23 Mar 2026 | 0.1 | 2.6 | 11.9 | 39 | |
| 24 Mar 2026 | 10.3 | 4.6 | 11.6 | 39 | wet |
| 25 Mar 2026 | 1.2 | 2.5 | 6.4 | 45 | |
| 26 Mar 2026 | 2.6 | 0.5 | 9.0 | 24 | |
| 27 Mar 2026 | 2.5 | 4.1 | 9.5 | 37 | |
| 28 Mar 2026 | 0.6 | 2.8 | 8.0 | 41 | |
| 29 Mar 2026 | 5.0 | 5.0 | 12.4 | 53 | wind |
| 30 Mar 2026 | 0.2 | 6.4 | 10.3 | 41 | |
| 31 Mar 2026 | 0.5 | 9.4 | 13.0 | 29 |
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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