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 Mar 2026 – 31 Mar 2026
Rainfall over this period was 43% of the 10-year average for the same calendar window at this location. Conditions were drier than typical for the time of year. 2 days had gusts at or above 47 mph.
Rainfall vs 10-yr avg
43%
25 mm vs 57 mm typical
Rain days >5mm
2
typical: 3.7
Frost days
0
typical: 3.3
High-wind days
2
gusts ≥ 47 mph
Daily record
| Date | Rain (mm) | Min °C | Max °C | Gust (mph) | Flags |
|---|---|---|---|---|---|
| 1 Mar 2026 | 1.0 | 3.5 | 12.1 | 30 | |
| 2 Mar 2026 | 0.0 | 7.7 | 14.4 | 25 | |
| 3 Mar 2026 | 0.0 | 4.9 | 13.7 | 15 | |
| 4 Mar 2026 | 0.0 | 3.3 | 12.1 | 14 | |
| 5 Mar 2026 | 0.0 | 5.4 | 14.4 | 17 | |
| 6 Mar 2026 | 3.4 | 5.8 | 13.1 | 17 | |
| 7 Mar 2026 | 0.0 | 6.9 | 9.8 | 13 | |
| 8 Mar 2026 | 0.0 | 6.3 | 9.9 | 14 | |
| 9 Mar 2026 | 0.0 | 6.2 | 14.2 | 15 | |
| 10 Mar 2026 | 0.1 | 7.1 | 12.7 | 26 | |
| 11 Mar 2026 | 3.8 | 6.6 | 12.1 | 33 | |
| 12 Mar 2026 | 0.2 | 5.3 | 12.1 | 48 | wind |
| 13 Mar 2026 | 6.1 | 3.0 | 11.2 | 46 | wet |
| 14 Mar 2026 | 0.6 | 0.9 | 9.9 | 27 | |
| 15 Mar 2026 | 5.4 | 0.4 | 11.8 | 40 | wet |
| 16 Mar 2026 | 1.0 | 4.3 | 10.9 | 28 | |
| 17 Mar 2026 | 0.0 | 8.7 | 14.2 | 28 | |
| 18 Mar 2026 | 0.0 | 7.2 | 13.9 | 21 | |
| 19 Mar 2026 | 0.0 | 3.9 | 15.5 | 15 | |
| 20 Mar 2026 | 0.0 | 2.6 | 12.5 | 15 | |
| 21 Mar 2026 | 0.0 | 1.1 | 11.8 | 14 | |
| 22 Mar 2026 | 0.0 | 0.9 | 11.6 | 15 | |
| 23 Mar 2026 | 0.0 | 2.6 | 13.8 | 16 | |
| 24 Mar 2026 | 0.2 | 7.9 | 14.0 | 41 | |
| 25 Mar 2026 | 0.3 | 3.7 | 10.1 | 48 | wind |
| 26 Mar 2026 | 0.0 | 1.1 | 8.5 | 26 | |
| 27 Mar 2026 | 1.2 | 2.9 | 11.1 | 25 | |
| 28 Mar 2026 | 0.3 | 3.1 | 9.4 | 33 | |
| 29 Mar 2026 | 0.4 | 1.0 | 10.0 | 36 | |
| 30 Mar 2026 | 0.5 | 6.0 | 10.9 | 38 | |
| 31 Mar 2026 | 0.3 | 5.5 | 14.9 | 21 |
2 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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