Weather delay tool
Weather record

Construction weather in Belfast, September 2024

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

Weather delay record

Belfast — 1 Sept 2024 to 30 Sept 2024

BT1 5GS · 1 Sept 2024 – 30 Sept 2024

Rainfall over this period was 61% 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

61%

59 mm vs 97 mm typical

Rain days >5mm

4

typical: 6.6

Frost days

0

typical: 0.0

High-wind days

0

gusts ≥ 47 mph

Daily record

DateRain (mm)Min °CMax °CGust (mph)Flags
1 Sept 20240.712.717.124
2 Sept 20245.89.816.523wet
3 Sept 20240.97.816.423
4 Sept 20240.89.014.326
5 Sept 20240.011.516.832
6 Sept 20240.013.621.731
7 Sept 20240.013.520.017
8 Sept 20240.011.417.231
9 Sept 20241.610.614.833
10 Sept 20243.39.013.637
11 Sept 20240.97.911.739
12 Sept 20240.46.412.526
13 Sept 20240.84.113.022
14 Sept 20240.211.717.137
15 Sept 20240.410.017.024
16 Sept 20240.07.417.918
17 Sept 20240.012.019.215
18 Sept 20240.08.717.717
19 Sept 20240.08.818.714
20 Sept 20240.011.015.925
21 Sept 20240.512.216.223
22 Sept 20240.010.816.220
23 Sept 20240.49.514.721
24 Sept 20240.77.814.027
25 Sept 20246.44.911.628wet
26 Sept 202419.19.110.839wet
27 Sept 20240.67.610.832
28 Sept 20240.16.212.221
29 Sept 20240.27.913.137
30 Sept 202415.310.111.727wet

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.

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