Daily rainfall, frost and wind for Bristol against the 10-year average — the starting point for any weather delay conversation on site.
Weather delay record
BS1 4DJ · 1 Dec 2025 – 31 Dec 2025
Rainfall over this period was 137% of the 10-year average for the same calendar window at this location. Conditions were materially wetter than typical for the time of year. 4 days had gusts at or above 47 mph.
Rainfall vs 10-yr avg
137%
149 mm vs 109 mm typical
Rain days >5mm
10
typical: 8.6
Frost days
1
typical: 3.6
High-wind days
4
gusts ≥ 47 mph
Daily record
| Date | Rain (mm) | Min °C | Max °C | Gust (mph) | Flags |
|---|---|---|---|---|---|
| 1 Dec 2025 | 21.5 | 8.1 | 12.8 | 47 | wet |
| 2 Dec 2025 | 0.0 | 4.8 | 9.7 | 28 | |
| 3 Dec 2025 | 0.0 | 3.1 | 9.3 | 18 | |
| 4 Dec 2025 | 8.4 | 3.6 | 7.8 | 32 | wet |
| 5 Dec 2025 | 8.8 | 2.3 | 9.9 | 52 | wet · wind |
| 6 Dec 2025 | 6.1 | 8.9 | 10.9 | 45 | wet |
| 7 Dec 2025 | 7.0 | 8.5 | 14.1 | 51 | wet · wind |
| 8 Dec 2025 | 3.0 | 9.7 | 12.4 | 33 | |
| 9 Dec 2025 | 18.2 | 10.2 | 14.3 | 54 | wet · wind |
| 10 Dec 2025 | 0.1 | 7.9 | 11.7 | 31 | |
| 11 Dec 2025 | 0.0 | 7.7 | 11.4 | 30 | |
| 12 Dec 2025 | 3.3 | 5.9 | 10.7 | 30 | |
| 13 Dec 2025 | 0.0 | 4.2 | 9.2 | 22 | |
| 14 Dec 2025 | 0.0 | 7.5 | 11.3 | 35 | |
| 15 Dec 2025 | 20.4 | 9.8 | 11.7 | 36 | wet |
| 16 Dec 2025 | 11.6 | 3.0 | 9.9 | 22 | wet |
| 17 Dec 2025 | 4.9 | 0.9 | 10.8 | 47 | wind |
| 18 Dec 2025 | 22.9 | 9.0 | 11.2 | 46 | wet |
| 19 Dec 2025 | 0.0 | 5.6 | 9.8 | 28 | |
| 20 Dec 2025 | 0.7 | 5.1 | 8.8 | 30 | |
| 21 Dec 2025 | 10.7 | 6.7 | 9.4 | 28 | wet |
| 22 Dec 2025 | 1.8 | 7.4 | 10.4 | 25 | |
| 23 Dec 2025 | 0.0 | 5.6 | 9.0 | 30 | |
| 24 Dec 2025 | 0.0 | 2.6 | 5.3 | 40 | |
| 25 Dec 2025 | 0.0 | 1.9 | 4.5 | 38 | |
| 26 Dec 2025 | 0.0 | 2.3 | 4.6 | 28 | |
| 27 Dec 2025 | 0.0 | 1.5 | 6.3 | 31 | |
| 28 Dec 2025 | 0.0 | 4.6 | 6.3 | 27 | |
| 29 Dec 2025 | 0.0 | 3.2 | 5.1 | 27 | |
| 30 Dec 2025 | 0.0 | 1.2 | 5.6 | 23 | |
| 31 Dec 2025 | 0.0 | -2.7 | 2.1 | 16 | frost |
10 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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