Portland Rainfall Forecast

Today 10 May
35%< 1mm
Mon 11 May
15%< 1mm
Tue 12 May
10%< 1mm
Wed 13 May
10%< 1mm
Thu 14 May
20%< 1mm
Fri 15 May
80%5–10mm
Sat 16 May
80%5–10mm

Portland Rainfall Statistics View More

May Rainfall

Cape Nelson Lighthouse (10km)

Total Rainfall 2026
159.8mm
Daily Average 2026
1.2mm
Wettest Day 15 April, 2026
22.2mm
Wet Days 2026
48/130 (37%)
Total Rainfall April
56.2mm
Daily Average April
1.9mm
Wettest Day 15 April, 2026
22.2mm
Wet Days April
14/30 (47%)
Total Rainfall May
32.4mm
Daily Average May
3.6mm
Wettest Day 5 May, 2026
15.4mm
Wet Days May
7/10 (70%)

Climate (2010–Present)

Cape Nelson Lighthouse (10km)

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

Annual Average 2021–2025
704.4mm
Monthly Average 2021–2026
58.2mm
Daily Average 2021–2026
1.9mm
Wettest Day 1 December, 2024
57mm

Get WillyWeather+ to remove ads