Grassy Island Rainfall Forecast

Today 20 Dec
20%< 1mm
Sun 21 Dec
90%10–15mm
Mon 22 Dec
75%1–5mm
Tue 23 Dec
60%< 2mm
Wed 24 Dec
65%< 2mm
Thu 25 Dec
40%< 1mm
Fri 26 Dec
20%< 1mm

Grassy Island Rainfall Statistics View More

December Rainfall

City Of Melbourne Bay (26km)

Total Rainfall 2025
904.8mm
Daily Average 2025
2.6mm
Wettest Day 23 July, 2025
28.2mm
Wet Days 2025
218/354 (62%)
Total Rainfall November
99mm
Daily Average November
3.3mm
Wettest Day 3 November, 2025
17.8mm
Wet Days November
28/30 (93%)
Total Rainfall December
26.2mm
Daily Average December
1.6mm
Wettest Day 9 December, 2025
12.4mm
Wet Days December
6/20 (30%)

Climate (2010–Present)

City Of Melbourne Bay (26km)

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Annual Average 2020–2024
1026.7mm
Monthly Average 2020–2025
84.2mm
Daily Average 2020–2025
2.8mm
Wettest Day 7 May, 2022
55.6mm

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