St Helens Rainfall Forecast

Today 15 May
90%5–10mm
Sat 16 May
70%1–5mm
Sun 17 May
40%< 1mm
Mon 18 May
55%< 2mm
Tue 19 May
40%< 1mm
Wed 20 May
15%< 1mm
Thu 21 May
10%< 1mm

St Helens Rainfall Statistics View More

May Rainfall

St Helens Aerodrome (3km)

Total Rainfall 2026
140.8mm
Daily Average 2026
1.1mm
Wettest Day 4 May, 2026
22mm
Wet Days 2026
48/135 (36%)
Total Rainfall April
17.4mm
Daily Average April
0.6mm
Wettest Day 7 April, 2026
5.4mm
Wet Days April
9/30 (30%)
Total Rainfall May
28.4mm
Daily Average May
2mm
Wettest Day 4 May, 2026
22mm
Wet Days May
10/15 (67%)

Climate (2010–Present)

St Helens Aerodrome (3km)

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Annual Average 2021–2025
767.4mm
Monthly Average 2021–2026
61.1mm
Daily Average 2021–2026
2mm
Wettest Day 1 December, 2024
99.2mm

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