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 Jul 2025 – 31 Jul 2025
Rainfall over this period was 134% 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
134%
76 mm vs 57 mm typical
Rain days >5mm
5
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 Jul 2025 | 0.0 | 18.4 | 32.3 | 21 | |
| 2 Jul 2025 | 10.7 | 15.1 | 21.5 | 28 | wet |
| 3 Jul 2025 | 0.0 | 10.7 | 22.0 | 19 | |
| 4 Jul 2025 | 0.0 | 12.5 | 25.6 | 26 | |
| 5 Jul 2025 | 1.2 | 14.9 | 21.9 | 36 | |
| 6 Jul 2025 | 6.1 | 14.7 | 22.9 | 23 | wet |
| 7 Jul 2025 | 1.0 | 13.7 | 18.6 | 31 | |
| 8 Jul 2025 | 0.0 | 11.3 | 22.1 | 29 | |
| 9 Jul 2025 | 0.5 | 11.2 | 26.1 | 19 | |
| 10 Jul 2025 | 0.0 | 15.8 | 27.3 | 24 | |
| 11 Jul 2025 | 0.0 | 14.9 | 26.7 | 23 | |
| 12 Jul 2025 | 0.0 | 14.1 | 25.9 | 18 | |
| 13 Jul 2025 | 0.7 | 14.0 | 24.2 | 17 | |
| 14 Jul 2025 | 0.3 | 16.8 | 26.0 | 33 | |
| 15 Jul 2025 | 1.3 | 13.2 | 22.1 | 34 | |
| 16 Jul 2025 | 0.0 | 13.9 | 22.5 | 29 | |
| 17 Jul 2025 | 0.0 | 14.1 | 23.5 | 19 | |
| 18 Jul 2025 | 0.6 | 18.1 | 27.7 | 24 | |
| 19 Jul 2025 | 16.8 | 18.5 | 23.4 | 19 | wet |
| 20 Jul 2025 | 12.3 | 15.2 | 20.7 | 25 | wet |
| 21 Jul 2025 | 10.4 | 14.6 | 21.7 | 22 | wet |
| 22 Jul 2025 | 1.0 | 14.1 | 22.3 | 22 | |
| 23 Jul 2025 | 0.4 | 14.5 | 21.5 | 19 | |
| 24 Jul 2025 | 4.9 | 14.6 | 19.5 | 31 | |
| 25 Jul 2025 | 0.2 | 14.0 | 24.2 | 16 | |
| 26 Jul 2025 | 1.8 | 14.8 | 22.1 | 19 | |
| 27 Jul 2025 | 0.5 | 13.5 | 20.9 | 21 | |
| 28 Jul 2025 | 0.2 | 12.4 | 22.4 | 21 | |
| 29 Jul 2025 | 0.1 | 12.9 | 20.8 | 19 | |
| 30 Jul 2025 | 0.3 | 14.9 | 22.9 | 20 | |
| 31 Jul 2025 | 4.4 | 14.5 | 23.4 | 20 |
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.
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