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 Sept 2024 – 30 Sept 2024
Rainfall over this period was 359% 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
359%
250 mm vs 70 mm typical
Rain days >5mm
13
typical: 4.7
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 2024 | 11.4 | 14.2 | 23.5 | 20 | wet |
| 2 Sept 2024 | 2.2 | 17.2 | 21.7 | 21 | |
| 3 Sept 2024 | 4.8 | 14.8 | 18.4 | 23 | |
| 4 Sept 2024 | 2.0 | 12.3 | 17.0 | 17 | |
| 5 Sept 2024 | 25.4 | 10.2 | 17.7 | 33 | wet |
| 6 Sept 2024 | 27.0 | 15.4 | 19.6 | 19 | wet |
| 7 Sept 2024 | 1.5 | 13.5 | 19.5 | 10 | |
| 8 Sept 2024 | 14.9 | 14.4 | 18.4 | 20 | wet |
| 9 Sept 2024 | 0.1 | 12.3 | 16.8 | 26 | |
| 10 Sept 2024 | 4.2 | 10.6 | 16.4 | 38 | |
| 11 Sept 2024 | 0.8 | 8.9 | 13.8 | 32 | |
| 12 Sept 2024 | 1.0 | 7.4 | 13.4 | 28 | |
| 13 Sept 2024 | 0.0 | 5.4 | 13.9 | 13 | |
| 14 Sept 2024 | 0.0 | 8.4 | 17.1 | 19 | |
| 15 Sept 2024 | 1.8 | 9.3 | 16.5 | 23 | |
| 16 Sept 2024 | 0.2 | 11.4 | 18.7 | 15 | |
| 17 Sept 2024 | 0.0 | 7.7 | 18.3 | 20 | |
| 18 Sept 2024 | 0.0 | 10.2 | 20.1 | 26 | |
| 19 Sept 2024 | 0.1 | 12.3 | 21.4 | 29 | |
| 20 Sept 2024 | 5.9 | 11.5 | 19.1 | 28 | wet |
| 21 Sept 2024 | 17.2 | 13.5 | 19.8 | 22 | wet |
| 22 Sept 2024 | 16.1 | 13.6 | 17.9 | 22 | wet |
| 23 Sept 2024 | 35.9 | 12.9 | 14.8 | 14 | wet |
| 24 Sept 2024 | 0.3 | 12.1 | 15.0 | 25 | |
| 25 Sept 2024 | 13.7 | 9.5 | 15.6 | 23 | wet |
| 26 Sept 2024 | 20.3 | 11.3 | 16.0 | 33 | wet |
| 27 Sept 2024 | 5.9 | 7.8 | 12.9 | 32 | wet |
| 28 Sept 2024 | 0.0 | 5.8 | 13.4 | 15 | |
| 29 Sept 2024 | 22.3 | 7.0 | 13.6 | 47 | wet |
| 30 Sept 2024 | 15.0 | 10.6 | 15.3 | 44 | 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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