Portland Offshore Rainfall Forecast

Today 28 Sep
35%< 1mm
Tue 29 Sep
20%< 1mm
Wed 30 Sep
95%5–10mm
Thu 1 Oct
95%10–15mm
Fri 2 Oct
40%< 1mm
Sat 3 Oct
10%< 1mm
Sun 4 Oct
10%< 1mm

Portland Offshore Rainfall Statistics View More

September Rainfall

Cape Nelson Lighthouse (9km)

Total Rainfall 2026
489.6mm
Daily Average 2026
1.8mm
Wettest Day 2 June, 2026
35mm
Wet Days 2026
135/271 (50%)
Total Rainfall August
75mm
Daily Average August
2.4mm
Wettest Day 10 August, 2026
14.2mm
Wet Days August
23/31 (74%)
Total Rainfall September
25.2mm
Daily Average September
1mm
Wettest Day 2 September, 2026
9.6mm
Wet Days September
10/28 (36%)

Climate (2021–2025)

Cape Nelson Lighthouse (9km)

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Annual Average 2021–2025
704.4mm
Monthly Average 2021–2026
56.8mm
Daily Average 2021–2026
1.9mm
Wettest Day 1 December, 2024
57mm

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