South Island Rainfall Forecast

Today 19 Apr
No Rain
Sun 20 Apr
35%< 1mm
Mon 21 Apr
50%< 2mm
Tue 22 Apr
10%< 1mm
Wed 23 Apr
20%< 1mm
Thu 24 Apr
15%< 1mm
Fri 25 Apr
10%< 1mm

South Island Rainfall Statistics View More

April Rainfall

Onslow Airport (31km)

Total Rainfall 2025
220.4mm
Daily Average 2025
2.1mm
Wettest Day 20 January, 2025
78mm
Wet Days 2025
19/109 (17%)
Total Rainfall March
23.2mm
Daily Average March
0.7mm
Wettest Day 14 March, 2025
15.2mm
Wet Days March
4/31 (13%)
Total Rainfall April
0mm
Daily Average April
0mm
Wettest Day 1 April, 2025
0mm
Wet Days April
–

Climate (2010–Present)

Onslow Airport (31km)

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Annual Average 2020–2024
209.9mm
Monthly Average 2020–2025
20.5mm
Daily Average 2020–2025
0.7mm
Wettest Day 18 May, 2022
87.6mm

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