Cape Portland Rainfall Forecast

Today 7 Sep
95%10–20mm
Mon 8 Sep
60%1–5mm
Tue 9 Sep
55%< 2mm
Wed 10 Sep
25%< 1mm
Thu 11 Sep
20%< 1mm
Fri 12 Sep
15%< 1mm
Sat 13 Sep
40%< 1mm

Cape Portland Rainfall Statistics View More

September Rainfall

Swan Island (12km)

Total Rainfall 2025
288.6mm
Daily Average 2025
1.2mm
Wettest Day 24 May, 2025
26.2mm
Wet Days 2025
96/250 (38%)
Total Rainfall August
44.4mm
Daily Average August
1.4mm
Wettest Day 30 August, 2025
18.6mm
Wet Days August
16/31 (52%)
Total Rainfall September
16.4mm
Daily Average September
2.7mm
Wettest Day 4 September, 2025
10.2mm
Wet Days September
3/7 (43%)

Climate (2010–Present)

Swan Island (12km)

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Annual Average 2020–2024
534.8mm
Monthly Average 2020–2025
44mm
Daily Average 2020–2025
1.5mm
Wettest Day 4 January, 2021
45.8mm

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