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 2025 – 31 Mar 2025
Rainfall over this period was 36% of the 10-year average for the same calendar window at this location. Conditions were drier than typical for the time of year. 1 day had gusts at or above 47 mph.
Rainfall vs 10-yr avg
36%
27 mm vs 75 mm typical
Rain days >5mm
3
typical: 4.6
Frost days
1
typical: 4.0
High-wind days
1
gusts ≥ 47 mph
Daily record
| Date | Rain (mm) | Min °C | Max °C | Gust (mph) | Flags |
|---|---|---|---|---|---|
| 1 Mar 2025 | 0.3 | 2.8 | 8.6 | 20 | |
| 2 Mar 2025 | 0.0 | 3.6 | 10.7 | 35 | |
| 3 Mar 2025 | 0.4 | 6.6 | 11.7 | 26 | |
| 4 Mar 2025 | 0.0 | 4.7 | 10.4 | 38 | |
| 5 Mar 2025 | 1.0 | 8.1 | 11.3 | 35 | |
| 6 Mar 2025 | 0.0 | 5.3 | 12.1 | 38 | |
| 7 Mar 2025 | 6.7 | 7.4 | 10.9 | 23 | wet |
| 8 Mar 2025 | 1.8 | 6.7 | 13.8 | 21 | |
| 9 Mar 2025 | 0.0 | 5.7 | 13.3 | 15 | |
| 10 Mar 2025 | 0.1 | 5.8 | 10.1 | 27 | |
| 11 Mar 2025 | 0.2 | 2.2 | 7.3 | 26 | |
| 12 Mar 2025 | 0.1 | 3.4 | 8.4 | 30 | |
| 13 Mar 2025 | 0.0 | 2.2 | 7.5 | 25 | |
| 14 Mar 2025 | 0.1 | 0.8 | 8.0 | 21 | |
| 15 Mar 2025 | 0.1 | -2.0 | 8.2 | 16 | frost |
| 16 Mar 2025 | 0.0 | 1.6 | 9.8 | 15 | |
| 17 Mar 2025 | 0.5 | 5.1 | 7.0 | 24 | |
| 18 Mar 2025 | 0.2 | 3.6 | 8.4 | 31 | |
| 19 Mar 2025 | 0.0 | 0.9 | 9.8 | 14 | |
| 20 Mar 2025 | 0.0 | 0.9 | 12.7 | 20 | |
| 21 Mar 2025 | 0.4 | 8.5 | 13.5 | 28 | |
| 22 Mar 2025 | 6.8 | 6.9 | 13.0 | 26 | wet |
| 23 Mar 2025 | 0.1 | 6.6 | 10.6 | 34 | |
| 24 Mar 2025 | 0.0 | 1.2 | 12.2 | 23 | |
| 25 Mar 2025 | 0.0 | 4.8 | 13.0 | 24 | |
| 26 Mar 2025 | 0.0 | 3.5 | 14.0 | 29 | |
| 27 Mar 2025 | 5.2 | 8.9 | 14.0 | 43 | wet |
| 28 Mar 2025 | 1.1 | 4.8 | 8.6 | 44 | |
| 29 Mar 2025 | 1.8 | 4.0 | 11.6 | 47 | wind |
| 30 Mar 2025 | 0.0 | 7.7 | 14.5 | 36 | |
| 31 Mar 2025 | 0.1 | 7.7 | 15.2 | 21 |
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.
Need this for your exact site and dates?
Run the free tool with your postcode and claim period — print-ready evidence in seconds.
Check your site's dates