Daily rainfall, frost and wind for Southampton against the 10-year average — the starting point for any weather delay conversation on site.
Weather delay record
SO14 7DU · 1 Dec 2025 – 31 Dec 2025
Rainfall over this period was 135% of the 10-year average for the same calendar window at this location. Conditions were materially wetter than typical for the time of year. 4 days had gusts at or above 47 mph.
Rainfall vs 10-yr avg
135%
124 mm vs 92 mm typical
Rain days >5mm
7
typical: 6.3
Frost days
2
typical: 3.8
High-wind days
4
gusts ≥ 47 mph
Daily record
| Date | Rain (mm) | Min °C | Max °C | Gust (mph) | Flags |
|---|---|---|---|---|---|
| 1 Dec 2025 | 14.9 | 9.1 | 12.2 | 49 | wet · wind |
| 2 Dec 2025 | 5.0 | 5.4 | 10.2 | 21 | |
| 3 Dec 2025 | 0.0 | 3.5 | 10.0 | 19 | |
| 4 Dec 2025 | 11.5 | 2.8 | 8.7 | 31 | wet |
| 5 Dec 2025 | 11.0 | 1.1 | 10.6 | 51 | wet · wind |
| 6 Dec 2025 | 3.2 | 9.1 | 12.4 | 33 | |
| 7 Dec 2025 | 8.7 | 8.8 | 13.9 | 42 | wet |
| 8 Dec 2025 | 3.6 | 11.0 | 12.8 | 29 | |
| 9 Dec 2025 | 14.1 | 11.5 | 14.7 | 48 | wet · wind |
| 10 Dec 2025 | 0.1 | 7.7 | 12.9 | 25 | |
| 11 Dec 2025 | 0.1 | 8.0 | 11.1 | 27 | |
| 12 Dec 2025 | 0.4 | 5.9 | 12.2 | 23 | |
| 13 Dec 2025 | 0.0 | 0.3 | 9.2 | 16 | |
| 14 Dec 2025 | 0.3 | 7.5 | 11.1 | 34 | |
| 15 Dec 2025 | 4.2 | 9.9 | 11.5 | 29 | |
| 16 Dec 2025 | 2.6 | 4.2 | 11.0 | 29 | |
| 17 Dec 2025 | 0.4 | -0.2 | 11.0 | 37 | frost |
| 18 Dec 2025 | 33.6 | 10.5 | 12.3 | 52 | wet · wind |
| 19 Dec 2025 | 0.1 | 6.8 | 11.1 | 24 | |
| 20 Dec 2025 | 1.0 | 5.8 | 9.8 | 21 | |
| 21 Dec 2025 | 7.8 | 7.5 | 10.7 | 26 | wet |
| 22 Dec 2025 | 1.7 | 8.1 | 11.4 | 30 | |
| 23 Dec 2025 | 0.0 | 6.1 | 9.2 | 27 | |
| 24 Dec 2025 | 0.0 | 2.8 | 6.0 | 34 | |
| 25 Dec 2025 | 0.0 | 2.6 | 5.3 | 37 | |
| 26 Dec 2025 | 0.0 | 0.1 | 6.0 | 26 | |
| 27 Dec 2025 | 0.0 | 1.9 | 7.3 | 28 | |
| 28 Dec 2025 | 0.0 | 3.6 | 7.1 | 28 | |
| 29 Dec 2025 | 0.0 | 2.6 | 5.9 | 23 | |
| 30 Dec 2025 | 0.0 | 1.3 | 6.3 | 23 | |
| 31 Dec 2025 | 0.0 | -2.0 | 2.8 | 15 | frost |
7 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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