Grant Bay Rainfall Forecast

Today 12 Aug
95%5–10mm
Wed 13 Aug
10%< 1mm
Thu 14 Aug
5%< 1mm
Fri 15 Aug
100%10–15mm
Sat 16 Aug
75%1–5mm
Sun 17 Aug
75%1–5mm
Mon 18 Aug
45%< 1mm

Grant Bay Rainfall Statistics View More

August Rainfall

Portland (8km)

Total Rainfall 2025
343mm
Daily Average 2025
1.8mm
Wettest Day 10 June, 2025
51.2mm
Wet Days 2025
45/224 (20%)
Total Rainfall July
134.8mm
Daily Average July
4.3mm
Wettest Day 16 July, 2025
37.8mm
Wet Days July
11/31 (35%)
Total Rainfall August
19mm
Daily Average August
2.4mm
Wettest Day 6 August, 2025
9mm
Wet Days August
5/12 (42%)

Climate (2010–Present)

Portland (8km)

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Annual Average 2020–2024
564.6mm
Monthly Average 2020–2025
54.3mm
Daily Average 2020–2025
1.9mm
Wettest Day 5 July, 2021
58.6mm

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