Portland Bay Rainfall Forecast

Today 13 Sep
50%< 1mm
Sun 14 Sep
15%< 1mm
Mon 15 Sep
75%1–5mm
Tue 16 Sep
90%1–5mm
Wed 17 Sep
50%< 1mm
Thu 18 Sep
45%< 1mm
Fri 19 Sep
90%5–15mm

Portland Bay Rainfall Statistics View More

September Rainfall

Portland Airport (25km)

Total Rainfall 2025
589.2mm
Daily Average 2025
2.3mm
Wettest Day 8 June, 2025
30.8mm
Wet Days 2025
145/256 (57%)
Total Rainfall August
90mm
Daily Average August
2.9mm
Wettest Day 16 August, 2025
14.6mm
Wet Days August
22/31 (71%)
Total Rainfall September
53.8mm
Daily Average September
4.9mm
Wettest Day 4 September, 2025
21mm
Wet Days September
10/13 (77%)

Climate (2010–Present)

Portland Airport (25km)

Take a look at our website widgetsAvailable free! Find Out More

Annual Average 2020–2024
837mm
Monthly Average 2020–2025
70.2mm
Daily Average 2020–2025
2.4mm
Wettest Day 1 December, 2024
58.8mm

Get WillyWeather+ to remove ads