Keaau, HI climate
Keaau has warm winters and pleasant summers, with plenty of rain. A typical July afternoon reaches 79°, a January night drops to 61°, and snow is almost unheard of.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Keaau feels like
Winter
Spring
Summer
Fall
Keaau weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground |
|---|---|---|---|---|---|---|
| January | 75° | 61° | 10.1" | 0 | 16 | 0 |
| February | 76° | 61° | 12.9" | 0 | 17 | 0 |
| March | 75° | 62° | 15.4" | 0 | 23 | 0 |
| April | 76° | 62° | 12.6" | 0 | 26 | 0 |
| May | 77° | 64° | 9.6" | 0 | 23 | 0 |
| June | 79° | 65° | 9.1" | 0 | 26 | 0 |
| July | 79° | 66° | 12.0" | 0 | 27 | 0 |
| August | 80° | 67° | 12.8" | 0 | 27 | 0 |
| September | 80° | 66° | 11.2" | 0 | 24 | 0 |
| October | 79° | 65° | 13.3" | 0 | 24 | 0 |
| November | 77° | 64° | 17.8" | 0 | 24 | 0 |
| December | 76° | 62° | 14.6" | 0 | 21 | 0 |
| Year | 78° | 64° | 151.2" | 0.0" | 277 | 0 |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more.
Rain and snow in Keaau
Keaau gets 151 inches of rain and melted snow a year. November is the wettest month and June the driest. Rain or snow falls on about 277 days a year.
A year-round growing season
Heating and cooling a home in Keaau
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Keaau, 0% of that work is heating and 100% is cooling, so air conditioning is the bigger bill.
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
Keaau and its neighbors
Keaau borders 1 town with climate data. January nights across them vary by 0.0°. Kurtistown has both the coldest January nights (61°) and the hottest July afternoons (79°). Keaau’s January low is 61° and its July high 79°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Keaau compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Common questions about Keaau’s climate
What is the coldest month in Keaau?
January, with a typical high of 75° and a low of 61°.
What is the hottest month in Keaau?
September, with a typical high of 80° and a low of 66°.
How much snow does Keaau get?
Almost none. A normal year brings 0.0 inches.
When is the first frost in Keaau?
Frost is uncommon. Only 0% of years see a night at 32° or below.
What is the rainiest month in Keaau?
November, with 17.8 inches of rain and melted snow. The year totals 151 inches.
NOAA’s gridded normals don’t cover this state, so temperatures and rainfall come from the nearest weather station. Snow, frost dates and day counts come from NOAA’s weather station at Waiakea Scd 88.2, HI (6 mi, snow) and Hilo 5 S, HI (3 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020.