Daily rainfall, frost and wind for Birmingham against the 10-year average — the starting point for any weather delay conversation on site.
Weather delay record
B1 1BB · 1 May 2025 – 31 May 2025
Rainfall over this period was 65% of the 10-year average for the same calendar window at this location. Conditions were drier than typical for the time of year.
Rainfall vs 10-yr avg
65%
44 mm vs 68 mm typical
Rain days >5mm
4
typical: 4.9
Frost days
0
typical: 0.2
High-wind days
0
gusts ≥ 47 mph
Daily record
| Date | Rain (mm) | Min °C | Max °C | Gust (mph) | Flags |
|---|---|---|---|---|---|
| 1 May 2025 | 0.0 | 11.6 | 25.9 | 21 | |
| 2 May 2025 | 0.0 | 9.8 | 20.4 | 20 | |
| 3 May 2025 | 0.1 | 8.0 | 15.2 | 29 | |
| 4 May 2025 | 0.0 | 6.9 | 12.2 | 27 | |
| 5 May 2025 | 0.2 | 3.7 | 13.1 | 30 | |
| 6 May 2025 | 0.0 | 3.8 | 15.5 | 23 | |
| 7 May 2025 | 0.0 | 7.0 | 17.0 | 23 | |
| 8 May 2025 | 0.3 | 6.2 | 13.2 | 23 | |
| 9 May 2025 | 0.0 | 4.1 | 19.4 | 24 | |
| 10 May 2025 | 0.0 | 7.1 | 21.2 | 25 | |
| 11 May 2025 | 0.0 | 8.5 | 23.4 | 26 | |
| 12 May 2025 | 3.9 | 12.3 | 24.0 | 30 | |
| 13 May 2025 | 0.0 | 10.4 | 22.9 | 27 | |
| 14 May 2025 | 0.0 | 7.5 | 19.7 | 25 | |
| 15 May 2025 | 0.0 | 6.9 | 17.4 | 26 | |
| 16 May 2025 | 0.0 | 7.4 | 20.4 | 26 | |
| 17 May 2025 | 0.0 | 8.9 | 16.9 | 19 | |
| 18 May 2025 | 0.0 | 7.7 | 17.4 | 20 | |
| 19 May 2025 | 0.2 | 7.2 | 16.8 | 19 | |
| 20 May 2025 | 0.1 | 8.0 | 20.9 | 22 | |
| 21 May 2025 | 10.1 | 10.9 | 18.7 | 22 | wet |
| 22 May 2025 | 0.0 | 8.2 | 14.2 | 20 | |
| 23 May 2025 | 0.1 | 5.7 | 19.3 | 25 | |
| 24 May 2025 | 5.5 | 12.1 | 19.3 | 35 | wet |
| 25 May 2025 | 0.2 | 11.6 | 17.0 | 39 | |
| 26 May 2025 | 6.9 | 9.2 | 16.0 | 40 | wet |
| 27 May 2025 | 10.5 | 11.8 | 16.4 | 39 | wet |
| 28 May 2025 | 2.4 | 11.7 | 17.3 | 29 | |
| 29 May 2025 | 2.7 | 12.0 | 20.9 | 43 | |
| 30 May 2025 | 0.8 | 14.1 | 20.5 | 32 | |
| 31 May 2025 | 0.1 | 13.2 | 22.2 | 33 |
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.
Need this for your exact site and dates?
Run the free tool with your postcode and claim period — print-ready evidence in seconds.
Check your site's dates