Portland Offshore Rainfall Forecast

Today 27 Aug
10%< 1mm
Fri 28 Aug
60%< 2mm
Sat 29 Aug
10%< 1mm
Sun 30 Aug
20%< 1mm
Mon 31 Aug
10%< 1mm
Tue 1 Sep
95%5–10mm
Wed 2 Sep
70%< 2mm

Portland Offshore Rainfall Statistics View More

August Rainfall

Cape Nelson Lighthouse (9km)

Total Rainfall 2026
463.6mm
Daily Average 2026
1.9mm
Wettest Day 2 June, 2026
35mm
Wet Days 2026
123/239 (51%)
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
74.2mm
Daily Average August
2.9mm
Wettest Day 10 August, 2026
14.2mm
Wet Days August
21/27 (78%)

Climate (2021–2025)

Cape Nelson Lighthouse (9km)

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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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