Daily rainfall, frost and wind for Swindon against the 10-year average — the starting point for any weather delay conversation on site.
Weather delay record
SN1 1LD · 1 Nov 2025 – 30 Nov 2025
Rainfall over this period was 140% 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
140%
110 mm vs 78 mm typical
Rain days >5mm
9
typical: 4.9
Frost days
5
typical: 3.1
High-wind days
0
gusts ≥ 47 mph
Daily record
| Date | Rain (mm) | Min °C | Max °C | Gust (mph) | Flags |
|---|---|---|---|---|---|
| 1 Nov 2025 | 6.6 | 7.1 | 13.6 | 46 | wet |
| 2 Nov 2025 | 1.9 | 6.4 | 11.4 | 27 | |
| 3 Nov 2025 | 0.1 | 7.9 | 14.8 | 40 | |
| 4 Nov 2025 | 0.3 | 12.9 | 15.5 | 39 | |
| 5 Nov 2025 | 0.5 | 14.1 | 16.5 | 35 | |
| 6 Nov 2025 | 0.2 | 12.5 | 16.3 | 25 | |
| 7 Nov 2025 | 1.6 | 11.2 | 15.0 | 27 | |
| 8 Nov 2025 | 0.0 | 8.1 | 13.3 | 19 | |
| 9 Nov 2025 | 8.1 | 7.3 | 12.9 | 35 | wet |
| 10 Nov 2025 | 9.6 | 7.6 | 12.5 | 34 | wet |
| 11 Nov 2025 | 7.7 | 7.0 | 14.5 | 42 | wet |
| 12 Nov 2025 | 8.0 | 12.6 | 15.1 | 43 | wet |
| 13 Nov 2025 | 6.8 | 12.0 | 15.4 | 27 | wet |
| 14 Nov 2025 | 28.8 | 10.9 | 13.1 | 31 | wet |
| 15 Nov 2025 | 0.3 | 9.9 | 13.2 | 21 | |
| 16 Nov 2025 | 0.3 | 5.2 | 9.7 | 26 | |
| 17 Nov 2025 | 0.0 | 0.4 | 6.6 | 25 | |
| 18 Nov 2025 | 3.2 | -1.2 | 7.3 | 22 | frost |
| 19 Nov 2025 | 3.5 | -1.2 | 4.3 | 36 | frost |
| 20 Nov 2025 | 0.0 | -2.3 | 4.1 | 27 | frost |
| 21 Nov 2025 | 0.0 | -2.7 | 4.2 | 18 | frost |
| 22 Nov 2025 | 7.7 | 1.2 | 8.3 | 37 | wet |
| 23 Nov 2025 | 1.9 | 3.4 | 9.1 | 33 | |
| 24 Nov 2025 | 1.9 | 4.2 | 6.9 | 29 | |
| 25 Nov 2025 | 0.0 | 0.6 | 6.2 | 22 | |
| 26 Nov 2025 | 2.8 | -2.5 | 9.3 | 28 | frost |
| 27 Nov 2025 | 0.3 | 9.6 | 12.8 | 31 | |
| 28 Nov 2025 | 0.2 | 7.5 | 11.6 | 38 | |
| 29 Nov 2025 | 7.3 | 4.2 | 10.0 | 36 | wet |
| 30 Nov 2025 | 0.2 | 1.1 | 7.3 | 24 |
9 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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