Daily rainfall, frost and wind for Colchester against the 10-year average — the starting point for any weather delay conversation on site.
Weather delay record
CO1 1PJ · 1 Sept 2024 – 30 Sept 2024
Rainfall over this period was 154% 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
154%
84 mm vs 54 mm typical
Rain days >5mm
8
typical: 3.7
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 | 0.3 | 16.0 | 25.4 | 21 | |
| 2 Sept 2024 | 0.7 | 17.5 | 23.1 | 26 | |
| 3 Sept 2024 | 4.3 | 16.9 | 23.2 | 20 | |
| 4 Sept 2024 | 0.5 | 12.4 | 19.6 | 15 | |
| 5 Sept 2024 | 0.2 | 13.7 | 22.7 | 38 | |
| 6 Sept 2024 | 0.5 | 16.3 | 25.6 | 22 | |
| 7 Sept 2024 | 0.8 | 14.7 | 23.0 | 15 | |
| 8 Sept 2024 | 3.8 | 13.3 | 19.4 | 26 | |
| 9 Sept 2024 | 0.6 | 11.9 | 16.6 | 30 | |
| 10 Sept 2024 | 5.9 | 10.6 | 18.3 | 38 | wet |
| 11 Sept 2024 | 1.5 | 8.2 | 14.7 | 34 | |
| 12 Sept 2024 | 0.3 | 6.6 | 14.8 | 22 | |
| 13 Sept 2024 | 0.0 | 6.5 | 16.0 | 19 | |
| 14 Sept 2024 | 0.0 | 5.0 | 18.1 | 18 | |
| 15 Sept 2024 | 0.7 | 8.4 | 19.6 | 22 | |
| 16 Sept 2024 | 0.1 | 10.6 | 19.7 | 20 | |
| 17 Sept 2024 | 0.0 | 10.0 | 20.2 | 24 | |
| 18 Sept 2024 | 0.0 | 13.3 | 22.1 | 27 | |
| 19 Sept 2024 | 0.0 | 14.7 | 23.4 | 26 | |
| 20 Sept 2024 | 0.2 | 14.5 | 22.2 | 29 | |
| 21 Sept 2024 | 12.1 | 14.9 | 22.9 | 21 | wet |
| 22 Sept 2024 | 7.2 | 14.8 | 20.7 | 21 | wet |
| 23 Sept 2024 | 10.0 | 13.7 | 19.2 | 29 | wet |
| 24 Sept 2024 | 4.7 | 12.5 | 16.5 | 24 | |
| 25 Sept 2024 | 6.1 | 10.3 | 16.2 | 25 | wet |
| 26 Sept 2024 | 5.6 | 11.5 | 17.6 | 34 | wet |
| 27 Sept 2024 | 5.6 | 8.1 | 12.9 | 38 | wet |
| 28 Sept 2024 | 0.0 | 4.7 | 13.8 | 19 | |
| 29 Sept 2024 | 0.4 | 5.6 | 14.0 | 34 | |
| 30 Sept 2024 | 11.6 | 12.4 | 17.3 | 38 | wet |
8 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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