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 Apr 2026 – 30 Apr 2026
Rainfall over this period was 29% 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
29%
13 mm vs 47 mm typical
Rain days >5mm
0
typical: 3.1
Frost days
0
typical: 2.8
High-wind days
2
gusts ≥ 47 mph
Daily record
| Date | Rain (mm) | Min °C | Max °C | Gust (mph) | Flags |
|---|---|---|---|---|---|
| 1 Apr 2026 | 0.6 | 7.9 | 11.7 | 18 | |
| 2 Apr 2026 | 0.3 | 3.4 | 10.8 | 19 | |
| 3 Apr 2026 | 1.1 | 7.1 | 13.8 | 46 | |
| 4 Apr 2026 | 0.2 | 7.1 | 13.4 | 52 | wind |
| 5 Apr 2026 | 0.8 | 5.0 | 10.8 | 50 | wind |
| 6 Apr 2026 | 0.0 | 2.0 | 13.8 | 24 | |
| 7 Apr 2026 | 0.0 | 5.9 | 20.0 | 27 | |
| 8 Apr 2026 | 0.0 | 7.8 | 22.1 | 19 | |
| 9 Apr 2026 | 0.1 | 5.9 | 13.8 | 38 | |
| 10 Apr 2026 | 0.0 | 4.5 | 11.5 | 29 | |
| 11 Apr 2026 | 0.9 | 6.9 | 10.5 | 43 | |
| 12 Apr 2026 | 1.1 | 5.5 | 11.7 | 38 | |
| 13 Apr 2026 | 2.2 | 2.0 | 11.9 | 23 | |
| 14 Apr 2026 | 0.1 | 4.5 | 13.4 | 34 | |
| 15 Apr 2026 | 3.7 | 9.5 | 15.6 | 44 | |
| 16 Apr 2026 | 0.5 | 9.1 | 15.1 | 30 | |
| 17 Apr 2026 | 1.3 | 9.4 | 15.7 | 38 | |
| 18 Apr 2026 | 0.1 | 6.3 | 14.2 | 24 | |
| 19 Apr 2026 | 0.0 | 4.1 | 13.0 | 21 | |
| 20 Apr 2026 | 0.1 | 3.3 | 13.0 | 24 | |
| 21 Apr 2026 | 0.0 | 3.6 | 12.9 | 35 | |
| 22 Apr 2026 | 0.0 | 3.7 | 16.5 | 37 | |
| 23 Apr 2026 | 0.0 | 4.7 | 18.1 | 28 | |
| 24 Apr 2026 | 0.0 | 3.2 | 18.6 | 20 | |
| 25 Apr 2026 | 0.0 | 3.1 | 19.5 | 15 | |
| 26 Apr 2026 | 0.0 | 5.7 | 18.6 | 18 | |
| 27 Apr 2026 | 0.0 | 8.3 | 20.1 | 29 | |
| 28 Apr 2026 | 0.3 | 8.1 | 13.5 | 36 | |
| 29 Apr 2026 | 0.0 | 5.9 | 17.9 | 42 | |
| 30 Apr 2026 | 0.0 | 9.3 | 21.3 | 31 |
0 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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