Daily rainfall, frost and wind for Sunderland against the 10-year average — the starting point for any weather delay conversation on site.
Weather delay record
SR1 3NR · 1 Sept 2025 – 30 Sept 2025
Rainfall over this period was 131% 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
131%
98 mm vs 75 mm typical
Rain days >5mm
9
typical: 5.2
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 Sept 2025 | 0.4 | 13.2 | 18.9 | 41 | |
| 2 Sept 2025 | 0.2 | 11.8 | 19.5 | 24 | |
| 3 Sept 2025 | 6.5 | 12.9 | 18.5 | 25 | wet |
| 4 Sept 2025 | 10.0 | 11.7 | 17.8 | 16 | wet |
| 5 Sept 2025 | 0.5 | 11.2 | 19.0 | 20 | |
| 6 Sept 2025 | 0.0 | 10.9 | 20.0 | 29 | |
| 7 Sept 2025 | 0.6 | 15.3 | 20.6 | 29 | |
| 8 Sept 2025 | 0.1 | 11.8 | 17.9 | 26 | |
| 9 Sept 2025 | 0.0 | 9.2 | 19.4 | 25 | |
| 10 Sept 2025 | 7.3 | 12.3 | 19.0 | 38 | wet |
| 11 Sept 2025 | 0.0 | 10.2 | 15.5 | 33 | |
| 12 Sept 2025 | 0.0 | 9.6 | 15.8 | 34 | |
| 13 Sept 2025 | 4.3 | 9.5 | 16.0 | 33 | |
| 14 Sept 2025 | 6.2 | 9.2 | 15.5 | 32 | wet |
| 15 Sept 2025 | 7.6 | 12.2 | 16.6 | 38 | wet |
| 16 Sept 2025 | 0.9 | 12.1 | 16.7 | 32 | |
| 17 Sept 2025 | 6.9 | 11.1 | 20.1 | 30 | wet |
| 18 Sept 2025 | 0.0 | 12.5 | 18.7 | 34 | |
| 19 Sept 2025 | 2.8 | 16.5 | 20.1 | 34 | |
| 20 Sept 2025 | 29.1 | 9.5 | 16.1 | 36 | wet |
| 21 Sept 2025 | 7.6 | 6.9 | 13.1 | 39 | wet |
| 22 Sept 2025 | 0.0 | 4.6 | 13.5 | 19 | |
| 23 Sept 2025 | 0.0 | 6.4 | 13.9 | 15 | |
| 24 Sept 2025 | 0.0 | 6.9 | 14.3 | 15 | |
| 25 Sept 2025 | 0.0 | 5.4 | 15.5 | 16 | |
| 26 Sept 2025 | 0.0 | 7.2 | 15.2 | 25 | |
| 27 Sept 2025 | 0.9 | 9.3 | 14.9 | 30 | |
| 28 Sept 2025 | 6.3 | 9.6 | 15.7 | 25 | wet |
| 29 Sept 2025 | 0.0 | 7.1 | 15.4 | 11 | |
| 30 Sept 2025 | 0.2 | 9.2 | 16.7 | 18 |
9 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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