Weather delay tool
Weather record

Construction weather in London, March 2025

Daily rainfall, frost and wind for London against the 10-year average — the starting point for any weather delay conversation on site.

Weather delay record

London — 1 Mar 2025 to 31 Mar 2025

EC1A 1BB · 1 Mar 2025 – 31 Mar 2025

Rainfall over this period was 22% 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

22%

13 mm vs 57 mm typical

Rain days >5mm

0

typical: 3.4

Frost days

4

typical: 3.5

High-wind days

0

gusts ≥ 47 mph

Daily record

DateRain (mm)Min °CMax °CGust (mph)Flags
1 Mar 20250.00.18.811
2 Mar 20250.0-1.38.710frost
3 Mar 20250.0-0.810.38frost
4 Mar 20250.00.810.912
5 Mar 20250.01.012.912
6 Mar 20250.04.615.819
7 Mar 20250.09.716.019
8 Mar 20250.07.015.817
9 Mar 20250.07.116.218
10 Mar 20250.46.913.821
11 Mar 20250.44.28.227
12 Mar 20254.02.17.417
13 Mar 20250.71.57.123
14 Mar 20250.40.07.920frost
15 Mar 20250.20.97.729
16 Mar 20250.0-0.48.026frost
17 Mar 20250.34.08.125
18 Mar 20250.02.410.123
19 Mar 20250.01.916.513
20 Mar 20250.05.719.216
21 Mar 20250.89.517.123
22 Mar 20251.411.015.518
23 Mar 20252.88.214.723
24 Mar 20250.07.112.719
25 Mar 20250.24.914.519
26 Mar 20250.39.315.612
27 Mar 20250.05.814.921
28 Mar 20250.87.414.225
29 Mar 20250.03.713.628
30 Mar 20250.09.615.930
31 Mar 20250.05.916.316

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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