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 Sept 2024 – 30 Sept 2024
Rainfall over this period was 259% 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
259%
169 mm vs 65 mm typical
Rain days >5mm
11
typical: 4.0
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 | 0.0 | 16.0 | 26.8 | 24 | |
| 2 Sept 2024 | 1.4 | 17.5 | 23.0 | 25 | |
| 3 Sept 2024 | 2.9 | 14.7 | 21.8 | 19 | |
| 4 Sept 2024 | 0.5 | 13.5 | 19.0 | 14 | |
| 5 Sept 2024 | 9.3 | 13.7 | 21.3 | 36 | wet |
| 6 Sept 2024 | 9.4 | 15.4 | 23.0 | 22 | wet |
| 7 Sept 2024 | 6.2 | 12.7 | 21.0 | 14 | wet |
| 8 Sept 2024 | 8.8 | 13.7 | 19.5 | 18 | wet |
| 9 Sept 2024 | 0.0 | 12.6 | 17.6 | 28 | |
| 10 Sept 2024 | 2.2 | 10.6 | 18.4 | 37 | |
| 11 Sept 2024 | 3.9 | 8.0 | 15.5 | 32 | |
| 12 Sept 2024 | 2.6 | 6.4 | 14.3 | 22 | |
| 13 Sept 2024 | 0.0 | 5.6 | 15.8 | 13 | |
| 14 Sept 2024 | 0.0 | 4.7 | 18.7 | 18 | |
| 15 Sept 2024 | 1.5 | 8.0 | 19.2 | 21 | |
| 16 Sept 2024 | 0.0 | 11.3 | 19.8 | 18 | |
| 17 Sept 2024 | 0.0 | 9.7 | 20.5 | 25 | |
| 18 Sept 2024 | 0.0 | 12.9 | 23.0 | 28 | |
| 19 Sept 2024 | 0.1 | 14.7 | 24.0 | 28 | |
| 20 Sept 2024 | 4.3 | 13.5 | 22.3 | 28 | |
| 21 Sept 2024 | 0.4 | 14.9 | 23.0 | 21 | |
| 22 Sept 2024 | 18.8 | 15.1 | 20.5 | 21 | wet |
| 23 Sept 2024 | 48.7 | 14.7 | 18.0 | 25 | wet |
| 24 Sept 2024 | 5.5 | 11.8 | 16.4 | 20 | wet |
| 25 Sept 2024 | 10.0 | 10.6 | 17.0 | 25 | wet |
| 26 Sept 2024 | 13.1 | 11.9 | 16.2 | 35 | wet |
| 27 Sept 2024 | 2.9 | 7.5 | 12.8 | 32 | |
| 28 Sept 2024 | 0.0 | 4.4 | 13.6 | 18 | |
| 29 Sept 2024 | 5.1 | 6.1 | 14.6 | 35 | wet |
| 30 Sept 2024 | 11.7 | 11.8 | 16.1 | 35 | wet |
11 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