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 Jan 2025 – 31 Jan 2025
Rainfall over this period was 115% of the 10-year average for the same calendar window at this location. Conditions were broadly in line with typical for the time of year. 1 day had gusts at or above 47 mph.
Rainfall vs 10-yr avg
115%
62 mm vs 54 mm typical
Rain days >5mm
4
typical: 3.8
Frost days
11
typical: 10.2
High-wind days
1
gusts ≥ 47 mph
Daily record
| Date | Rain (mm) | Min °C | Max °C | Gust (mph) | Flags |
|---|---|---|---|---|---|
| 1 Jan 2025 | 9.8 | 4.7 | 11.3 | 45 | wet |
| 2 Jan 2025 | 0.0 | -1.5 | 4.5 | 18 | frost |
| 3 Jan 2025 | 0.0 | -2.6 | 3.7 | 22 | frost |
| 4 Jan 2025 | 0.5 | -1.7 | 2.8 | 22 | frost |
| 5 Jan 2025 | 17.9 | 1.0 | 12.0 | 34 | wet |
| 6 Jan 2025 | 5.8 | 2.4 | 12.0 | 47 | wet |
| 7 Jan 2025 | 0.0 | -0.3 | 4.3 | 21 | frost |
| 8 Jan 2025 | 1.2 | -1.4 | 2.0 | 21 | frost |
| 9 Jan 2025 | 0.1 | -1.0 | 2.8 | 23 | frost |
| 10 Jan 2025 | 0.0 | -4.3 | 2.7 | 15 | frost |
| 11 Jan 2025 | 0.0 | -2.8 | 3.1 | 12 | frost |
| 12 Jan 2025 | 0.0 | -4.3 | 1.7 | 10 | frost |
| 13 Jan 2025 | 0.0 | 0.2 | 6.1 | 19 | |
| 14 Jan 2025 | 0.0 | 1.9 | 9.4 | 16 | |
| 15 Jan 2025 | 0.0 | 7.2 | 9.5 | 11 | |
| 16 Jan 2025 | 0.0 | 4.9 | 8.5 | 16 | |
| 17 Jan 2025 | 0.0 | 1.8 | 5.6 | 13 | |
| 18 Jan 2025 | 0.0 | 1.0 | 3.8 | 16 | |
| 19 Jan 2025 | 0.0 | 0.8 | 3.1 | 16 | |
| 20 Jan 2025 | 0.0 | 0.5 | 5.1 | 15 | |
| 21 Jan 2025 | 0.0 | -0.7 | 4.8 | 15 | frost |
| 22 Jan 2025 | 1.3 | 1.5 | 4.2 | 16 | |
| 23 Jan 2025 | 6.0 | 1.0 | 7.4 | 33 | wet |
| 24 Jan 2025 | 2.6 | 5.0 | 11.2 | 45 | |
| 25 Jan 2025 | 1.5 | 1.3 | 7.1 | 19 | |
| 26 Jan 2025 | 4.9 | -1.2 | 7.4 | 43 | frost |
| 27 Jan 2025 | 3.3 | 6.5 | 9.6 | 47 | wind |
| 28 Jan 2025 | 3.5 | 6.6 | 9.3 | 34 | |
| 29 Jan 2025 | 0.1 | 3.7 | 8.8 | 28 | |
| 30 Jan 2025 | 0.0 | 0.5 | 6.9 | 19 | |
| 31 Jan 2025 | 3.7 | 0.6 | 6.8 | 18 |
4 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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