Portland Rainfall Forecast

Today 21 May
10%< 1mm
Thu 22 May
10%< 1mm
Fri 23 May
15%< 1mm
Sat 24 May
65%1–5mm
Sun 25 May
75%5–10mm
Mon 26 May
90%10–15mm
Tue 27 May
70%1–5mm

Portland Rainfall Statistics View More

May Rainfall

Cape Nelson Lighthouse (10km)

Total Rainfall 2025
70.8mm
Daily Average 2025
0.5mm
Wettest Day 21 April, 2025
14mm
Wet Days 2025
45/141 (32%)
Total Rainfall April
31mm
Daily Average April
1mm
Wettest Day 21 April, 2025
14mm
Wet Days April
18/30 (60%)
Total Rainfall May
15mm
Daily Average May
0.8mm
Wettest Day 16 May, 2025
5.4mm
Wet Days May
9/21 (43%)

Climate (2010–Present)

Cape Nelson Lighthouse (10km)

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Annual Average 2020–2024
711.8mm
Monthly Average 2020–2025
57.9mm
Daily Average 2020–2025
1.9mm
Wettest Day 1 December, 2024
57mm

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