Hilo Rainfall Forecast

Today 15 May
85%
Fri 16 May
85%
Sat 17 May
60%
Sun 18 May
55%
Mon 19 May
40%
Tue 20 May
30%
Wed 21 May
25%

Hilo Rainfall Statistics

May Rainfall

Hilo, Hilo International Airport (1.9 miles)

Total Rainfall 2025
22.8in
Daily Average 2025
0.2in
Wettest Day 19 March, 2025
1.7in
Wet Days 2025
88/135 (65%)
Total Rainfall April
3.4in
Daily Average April
0.1in
Wettest Day 30 April, 2025
0.6in
Wet Days April
20/30 (67%)
Total Rainfall May
1.8in
Daily Average May
0.1in
Wettest Day 7 May, 2025
0.4in
Wet Days May
13/15 (87%)

Climate (2010–Present)

Hilo, Hilo International Airport (1.9 miles)

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Annual Average 2020–2024
112.2in
Monthly Average 2020–2025
8.7in
Daily Average 2020–2025
0.3in
Wettest Day 18 February, 2023
11.1in

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