Portland Offshore Rainfall Forecast

Today 17 Dec
No Rain
Thu 18 Dec
30%< 1mm
Fri 19 Dec
40%< 1mm
Sat 20 Dec
30%< 1mm
Sun 21 Dec
85%5–15mm
Mon 22 Dec
35%< 1mm
Tue 23 Dec
35%< 1mm

Portland Offshore Rainfall Statistics View More

December Rainfall

Cape Nelson Lighthouse (9km)

Total Rainfall 2025
676mm
Daily Average 2025
1.9mm
Wettest Day 23 July, 2025
28.6mm
Wet Days 2025
183/351 (52%)
Total Rainfall November
50.8mm
Daily Average November
1.7mm
Wettest Day 7 November, 2025
7.4mm
Wet Days November
22/30 (73%)
Total Rainfall December
16.8mm
Daily Average December
1.1mm
Wettest Day 1 December, 2025
12.6mm
Wet Days December
5/17 (29%)

Climate (2010–Present)

Cape Nelson Lighthouse (9km)

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Annual Average 2020–2024
711.8mm
Monthly Average 2020–2025
59.8mm
Daily Average 2020–2025
2mm
Wettest Day 1 December, 2024
57mm

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