Weather delay tool
Weather record

Construction weather in London, July 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 Jul 2025 to 31 Jul 2025

EC1A 1BB · 1 Jul 2025 – 31 Jul 2025

Rainfall over this period was 125% of the 10-year average for the same calendar window at this location. Conditions were broadly in line with typical for the time of year.

Rainfall vs 10-yr avg

125%

76 mm vs 60 mm typical

Rain days >5mm

3

typical: 3.6

Frost days

0

typical: 0.0

High-wind days

0

gusts ≥ 47 mph

Daily record

DateRain (mm)Min °CMax °CGust (mph)Flags
1 Jul 20250.023.633.619
2 Jul 20254.117.024.225
3 Jul 20250.012.723.619
4 Jul 20250.014.426.226
5 Jul 20252.116.421.734
6 Jul 20253.817.322.524
7 Jul 202510.013.519.629wet
8 Jul 20250.212.421.920
9 Jul 20250.913.725.214
10 Jul 20250.017.730.020
11 Jul 20250.019.031.717
12 Jul 20250.019.928.821
13 Jul 20250.115.827.720
14 Jul 20250.918.324.936
15 Jul 20250.714.521.636
16 Jul 20250.015.223.826
17 Jul 20250.818.825.817
18 Jul 20250.018.229.421
19 Jul 202516.117.922.517wet
20 Jul 20252.816.120.427
21 Jul 20250.614.422.622
22 Jul 20251.015.322.321
23 Jul 20251.715.022.017
24 Jul 20250.915.420.826
25 Jul 20250.015.425.418
26 Jul 20250.215.923.218
27 Jul 20250.315.221.523
28 Jul 20250.015.024.222
29 Jul 20250.815.221.916
30 Jul 20250.816.224.722
31 Jul 202526.716.622.618wet

3 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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