Portland Rainfall Forecast

Today 13 Aug
85%1–5mm
Fri 14 Aug
75%< 2mm
Sat 15 Aug
40%< 1mm
Sun 16 Aug
20%< 1mm
Mon 17 Aug
10%< 1mm
Tue 18 Aug
35%< 1mm
Wed 19 Aug
75%1–5mm

Portland Rainfall Statistics View More

August Rainfall

Cape Nelson Lighthouse (10km)

Total Rainfall 2026
431.8mm
Daily Average 2026
1.9mm
Wettest Day 2 June, 2026
35mm
Wet Days 2026
112/225 (50%)
Total Rainfall July
81.6mm
Daily Average July
2.6mm
Wettest Day 3 July, 2026
15.2mm
Wet Days July
20/31 (65%)
Total Rainfall August
42.4mm
Daily Average August
3.5mm
Wettest Day 10 August, 2026
14.2mm
Wet Days August
10/13 (77%)

Climate (2021–2025)

Cape Nelson Lighthouse (10km)

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Annual Average 2021–2025
704.4mm
Monthly Average 2021–2026
56.9mm
Daily Average 2021–2026
1.9mm
Wettest Day 1 December, 2024
57mm

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