Half Moon Bay Rainfall Forecast

Today 8 Aug
75%1–5mm
Sun 9 Aug
95%5–15mm
Mon 10 Aug
95%5–15mm
Tue 11 Aug
60%< 2mm
Wed 12 Aug
85%1–5mm
Thu 13 Aug
40%< 1mm
Fri 14 Aug
40%< 1mm

Half Moon Bay Rainfall Statistics View More

August Rainfall

Avalon Airport (23km)

Total Rainfall 2026
158.4mm
Daily Average 2026
0.7mm
Wettest Day 12 July, 2026
12.2mm
Wet Days 2026
81/220 (37%)
Total Rainfall July
32.8mm
Daily Average July
1.1mm
Wettest Day 12 July, 2026
12.2mm
Wet Days July
16/31 (52%)
Total Rainfall August
8.2mm
Daily Average August
1.4mm
Wettest Day 5 August, 2026
6.8mm
Wet Days August
3/8 (38%)

Climate (2021–2025)

Avalon Airport (23km)

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Annual Average 2021–2025
462.6mm
Monthly Average 2021–2026
36.6mm
Daily Average 2021–2026
1.2mm
Wettest Day 3 February, 2025
52.2mm

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