South Island Rainfall Forecast

Today 13 May
60%1–5mm
Thu 14 May
60%< 2mm
Fri 15 May
45%< 1mm
Sat 16 May
20%< 1mm
Sun 17 May
25%< 1mm
Mon 18 May
25%< 1mm
Tue 19 May
20%< 1mm

South Island Rainfall Statistics View More

May Rainfall

Middle Percy Island (12km)

Total Rainfall 2026
777.2mm
Daily Average 2026
5.9mm
Wettest Day 12 January, 2026
116mm
Wet Days 2026
71/133 (53%)
Total Rainfall April
111.4mm
Daily Average April
3.7mm
Wettest Day 28 April, 2026
46.2mm
Wet Days April
15/30 (50%)
Total Rainfall May
53.2mm
Daily Average May
4.8mm
Wettest Day 7 May, 2026
30mm
Wet Days May
7/13 (54%)

Climate (2010–Present)

Middle Percy Island (12km)

Take a look at our website widgetsAvailable free! Find Out More

Annual Average 2021–2025
1012.6mm
Monthly Average 2021–2026
89.2mm
Daily Average 2021–2026
3.1mm
Wettest Day 2 April, 2023
154.6mm

Get WillyWeather+ to remove ads