National Weather Service

News Headlines

August 2026 Monthly Rainfall Summary for Hawaii

Current conditions at

Hilo, Hilo International Airport (PHTO)

Lat: 19.72°NLon: 155.06°WElev: 36ft.

Overcast

81°F

27°C

Humidity	67%
Wind Speed	N 9 mph
Barometer	30.01 in (1015.9 mb)
Dewpoint	69°F (21°C)
Visibility	10.00 mi
Heat Index	84°F (29°C)
Last update	5 Oct 10:53 am HST

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Wainaku HI

Today
High: 81 °F
Scattered
Showers
Tonight
Low: 68 °F
Scattered
Showers
Tuesday
High: 82 °F
Scattered
Showers then
Partly Sunny
Tuesday Night
Low: 68 °F
Isolated
Showers then
Partly Cloudy
Wednesday
High: 83 °F
Mostly Sunny
Wednesday Night
Low: 70 °F
Mostly Clear
Thursday
High: 84 °F
Mostly Sunny
Thursday Night
Low: 71 °F
Partly Cloudy
Friday
High: 84 °F
Mostly Sunny
then Isolated
Showers

Detailed Forecast

Today

Scattered showers. Partly sunny, with a high near 81. North northeast wind 6 to 8 mph. Chance of precipitation is 50%.

Tonight

Scattered showers. Mostly cloudy, with a low around 68. North wind 5 to 7 mph becoming light and variable after midnight. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

Tuesday

Scattered showers before noon. Partly sunny, with a high near 82. Calm wind becoming east around 6 mph. Chance of precipitation is 30%.

Tuesday Night

Isolated showers before midnight. Partly cloudy, with a low around 68. Light south southeast wind. Chance of precipitation is 20%.

Wednesday

Mostly sunny, with a high near 83. East southeast wind 3 to 8 mph.

Wednesday Night

Mostly clear, with a low around 70. South wind 3 to 6 mph.

Thursday

Mostly sunny, with a high near 84. Southeast wind 6 to 13 mph.

Thursday Night

Partly cloudy, with a low around 71. South wind 7 to 9 mph.