Daily rainfall, frost and wind for Brighton against the 10-year average — the starting point for any weather delay conversation on site.
Weather delay record
BN1 1UG · 1 Jan 2025 – 31 Jan 2025
Rainfall over this period was 144% of the 10-year average for the same calendar window at this location. Conditions were materially wetter than typical for the time of year. 8 days had gusts at or above 47 mph.
Rainfall vs 10-yr avg
144%
121 mm vs 84 mm typical
Rain days >5mm
9
typical: 6.3
Frost days
8
typical: 6.9
High-wind days
8
gusts ≥ 47 mph
Daily record
| Date | Rain (mm) | Min °C | Max °C | Gust (mph) | Flags |
|---|---|---|---|---|---|
| 1 Jan 2025 | 17.7 | 5.3 | 12.0 | 62 | wet · wind |
| 2 Jan 2025 | 0.0 | -1.0 | 6.3 | 20 | frost |
| 3 Jan 2025 | 0.0 | -1.8 | 3.9 | 16 | frost |
| 4 Jan 2025 | 4.7 | -1.3 | 4.9 | 31 | frost |
| 5 Jan 2025 | 25.8 | 2.1 | 12.1 | 51 | wet · wind |
| 6 Jan 2025 | 2.0 | 3.9 | 11.9 | 54 | wind |
| 7 Jan 2025 | 0.4 | 1.8 | 5.8 | 30 | |
| 8 Jan 2025 | 8.1 | -0.4 | 3.5 | 25 | wet · frost |
| 9 Jan 2025 | 0.6 | -0.4 | 3.6 | 24 | frost |
| 10 Jan 2025 | 0.0 | -2.4 | 4.1 | 14 | frost |
| 11 Jan 2025 | 0.0 | -2.5 | 3.8 | 11 | frost |
| 12 Jan 2025 | 0.0 | -3.5 | 5.0 | 9 | frost |
| 13 Jan 2025 | 0.0 | 2.8 | 6.1 | 20 | |
| 14 Jan 2025 | 0.0 | 3.6 | 8.8 | 18 | |
| 15 Jan 2025 | 0.3 | 7.3 | 10.2 | 11 | |
| 16 Jan 2025 | 0.0 | 6.3 | 8.9 | 19 | |
| 17 Jan 2025 | 0.0 | 3.1 | 6.5 | 17 | |
| 18 Jan 2025 | 0.0 | 2.4 | 4.0 | 17 | |
| 19 Jan 2025 | 0.1 | 2.4 | 3.7 | 19 | |
| 20 Jan 2025 | 0.0 | 2.3 | 7.1 | 13 | |
| 21 Jan 2025 | 0.0 | 2.1 | 5.2 | 18 | |
| 22 Jan 2025 | 2.2 | 3.6 | 5.3 | 16 | |
| 23 Jan 2025 | 5.2 | 2.3 | 8.9 | 54 | wet · wind |
| 24 Jan 2025 | 6.8 | 8.6 | 10.5 | 57 | wet · wind |
| 25 Jan 2025 | 1.6 | 3.2 | 8.7 | 24 | |
| 26 Jan 2025 | 9.7 | 1.4 | 9.7 | 57 | wet · wind |
| 27 Jan 2025 | 17.2 | 7.5 | 9.9 | 62 | wet · wind |
| 28 Jan 2025 | 3.3 | 7.3 | 9.3 | 53 | wind |
| 29 Jan 2025 | 9.7 | 4.8 | 8.4 | 31 | wet |
| 30 Jan 2025 | 0.5 | 2.1 | 7.6 | 27 | |
| 31 Jan 2025 | 5.1 | 3.0 | 8.6 | 34 | wet |
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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