Daily rainfall, frost and wind for London against the 10-year average — the starting point for any weather delay conversation on site.
Weather delay record
EC1A 1BB · 1 Jan 2025 – 31 Jan 2025
Rainfall over this period was 133% of the 10-year average for the same calendar window at this location. Conditions were materially wetter than typical for the time of year. 2 days had gusts at or above 47 mph.
Rainfall vs 10-yr avg
133%
84 mm vs 63 mm typical
Rain days >5mm
5
typical: 4.3
Frost days
9
typical: 10.4
High-wind days
2
gusts ≥ 47 mph
Daily record
| Date | Rain (mm) | Min °C | Max °C | Gust (mph) | Flags |
|---|---|---|---|---|---|
| 1 Jan 2025 | 10.5 | 5.3 | 11.8 | 44 | wet |
| 2 Jan 2025 | 0.0 | -0.4 | 4.4 | 16 | frost |
| 3 Jan 2025 | 0.0 | -1.3 | 3.4 | 14 | frost |
| 4 Jan 2025 | 1.8 | -1.7 | 3.2 | 21 | frost |
| 5 Jan 2025 | 23.5 | 0.7 | 12.6 | 33 | wet |
| 6 Jan 2025 | 7.4 | 2.5 | 12.0 | 47 | wet · wind |
| 7 Jan 2025 | 0.1 | 0.7 | 4.9 | 25 | |
| 8 Jan 2025 | 3.0 | -0.8 | 1.8 | 15 | frost |
| 9 Jan 2025 | 0.6 | -0.9 | 3.0 | 17 | frost |
| 10 Jan 2025 | 0.0 | -2.0 | 1.4 | 10 | frost |
| 11 Jan 2025 | 0.0 | -3.8 | 1.6 | 8 | frost |
| 12 Jan 2025 | 0.0 | -4.5 | 3.2 | 10 | frost |
| 13 Jan 2025 | 0.0 | 1.5 | 5.9 | 16 | |
| 14 Jan 2025 | 0.0 | 2.5 | 8.8 | 15 | |
| 15 Jan 2025 | 0.0 | 7.6 | 10.0 | 10 | |
| 16 Jan 2025 | 0.0 | 6.0 | 9.6 | 17 | |
| 17 Jan 2025 | 0.0 | 3.6 | 6.5 | 12 | |
| 18 Jan 2025 | 0.0 | 2.2 | 3.4 | 12 | |
| 19 Jan 2025 | 0.2 | 1.8 | 3.4 | 13 | |
| 20 Jan 2025 | 0.1 | 2.2 | 6.0 | 13 | |
| 21 Jan 2025 | 0.0 | -1.0 | 4.9 | 10 | frost |
| 22 Jan 2025 | 1.0 | 2.3 | 4.3 | 12 | |
| 23 Jan 2025 | 4.7 | 1.5 | 8.2 | 32 | |
| 24 Jan 2025 | 3.8 | 6.5 | 10.8 | 47 | wind |
| 25 Jan 2025 | 2.1 | 2.7 | 8.0 | 17 | |
| 26 Jan 2025 | 8.3 | 1.6 | 8.9 | 41 | wet |
| 27 Jan 2025 | 9.0 | 6.8 | 9.4 | 40 | wet |
| 28 Jan 2025 | 4.0 | 7.3 | 9.5 | 36 | |
| 29 Jan 2025 | 0.2 | 4.0 | 7.8 | 25 | |
| 30 Jan 2025 | 0.0 | 1.9 | 7.5 | 18 | |
| 31 Jan 2025 | 3.5 | 2.1 | 8.0 | 23 |
5 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