Merriton Rainfall Forecast

Today 16 Dec
No Rain
Wed 17 Dec
No Rain
Thu 18 Dec
No Rain
Fri 19 Dec
15%< 1mm
Sat 20 Dec
15%< 1mm
Sun 21 Dec
55%1–5mm
Mon 22 Dec
10%< 1mm

Merriton Rainfall Statistics View More

December Rainfall

Koolunga (37km)

Total Rainfall 2025
302.1mm
Daily Average 2025
0.9mm
Wettest Day 22 October, 2025
21.4mm
Wet Days 2025
71/350 (20%)
Total Rainfall November
40.2mm
Daily Average November
1.4mm
Wettest Day 29 November, 2025
14.8mm
Wet Days November
10/30 (33%)
Total Rainfall December
3.9mm
Daily Average December
0.3mm
Wettest Day 1 December, 2025
2.4mm
Wet Days December
3/16 (19%)

Climate (2010–Present)

Koolunga (37km)

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Annual Average 2020–2024
394.1mm
Monthly Average 2020–2025
30.9mm
Daily Average 2020–2025
1mm
Wettest Day 23 October, 2022
54.2mm

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