South Island Rainfall Forecast

Today 16 May
80%5–10mm
Sun 17 May
75%1–5mm
Mon 18 May
35%< 1mm
Tue 19 May
10%< 1mm
Wed 20 May
10%< 1mm
Thu 21 May
10%< 1mm
Fri 22 May
25%< 1mm

South Island Rainfall Statistics View More

May Rainfall

Cardwell Marine Pde (32km)

Total Rainfall 2026
1793.5mm
Daily Average 2026
13.7mm
Wettest Day 2 March, 2026
206mm
Wet Days 2026
91/136 (67%)
Total Rainfall April
118mm
Daily Average April
4.2mm
Wettest Day 15 April, 2026
29mm
Wet Days April
13/30 (43%)
Total Rainfall May
26mm
Daily Average May
1.7mm
Wettest Day 14 May, 2026
6mm
Wet Days May
9/16 (56%)

Climate (2010–Present)

Cardwell Marine Pde (32km)

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Annual Average 2021–2025
2242.1mm
Monthly Average 2021–2026
216.2mm
Daily Average 2021–2026
7.7mm
Wettest Day 3 February, 2025
490mm

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