As of Oct 13, 2026, the latest day this station has reported

How much rain has Hawaii County, Hawaii, had in 2026?

126.95 inches of rain have fallen so far in 2026 at the weather station at Hilo International Airport 87, Hawaii County, through Oct 13. That is 39.28 inches more than a usual year to date (145% of usual).

Rain so far
126.95 in
Usual by Oct 13
87.67 in
Percent of usual
145%
Running total of rain in Hawaii County, 2026, against a usual year0102030405060708090100110120130JFMAMJJASOND2026Usual
Inches of rain added up day by day from Jan 1, solid line, against the usual year at this station (dashed), counted on the same days. Days with no report add nothing to either line.

Get Hawaii County’s 2026 rain and snow drawn as a Rain Print, with your name and dates: framed $89, print $45. Make yours

Prints of 2026 ship in January, once the full year is in.

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Month by month

Rain by month in Hawaii County, Hawaii, 2026
MonthRain, inUsual, inVs usual
Jan9.077.86+1.21
Feb16.8910.22+6.67
Mar13.3612.68+0.68
Apr7.229.40−2.18
May18.186.99+11.19
Jun11.397.30+4.09
Jul11.289.24+2.04
Aug20.8511.30+9.55
Sep16.198.70+7.49
Oct to the 13th2.523.98−1.46
So far126.9587.67+39.28

2026 so far in Hawaii County

The station, and what usual means

The numbers come from NOAA’s daily record for the station at Hilo International Airport 87 (station ID 21504), 32 miles from the middle of Hawaii County. It reported every one of the 286 days from Jan 1 to Oct 13. Rain here means everything the gauge caught: rain, and snow melted down to water. A trace counts as zero.

Usual means NOAA’s 1991 to 2020 daily normals for this station, added up over the same 286 days the station reported, so a missing day counts on neither side.

Why this station: 33 stations inside Hawaii County reported at least 90% of the days in 2026. Mountain snow sites, and stations far above the rest in the county, come last, since their rain is not what the farms below get. Then the pick goes to one with NOAA normals, then the most days reported, then the one nearest the middle of the county. Your own rain gauge can read differently a few miles away.

Questions

How much rain has Hawaii County, Hawaii, had in 2026?

126.95 inches of rain have fallen so far in 2026 at the weather station at Hilo International Airport 87, Hawaii County, through Oct 13. That is 39.28 inches more than a usual year to date (145% of usual).

Is Hawaii County wetter or drier than usual in 2026?

Wetter so far. The weather station at Hilo International Airport 87 had 126.95 inches from Jan 1 to Oct 13, 145% of the usual 87.67 inches for the same days.

What was the wettest month in Hawaii County in 2026?

August, with 20.85 inches at the weather station at Hilo International Airport 87, counting Jan 1 through Oct 13.

What was the biggest rain in Hawaii County in 2026?

6.82 inches on Aug 15, 2026, the most the gauge caught in one day this year through Oct 13.

Rain in Hawaii, county by county · Farmland Atlas: Hawaii County