Maunawili, HI climate
Maunawili has warm winters and pleasant summers, with plenty of rain. A typical July afternoon reaches 79°, a January night drops to 63°, and snow is almost unheard of.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Maunawili feels like
Winter
Spring
Summer
Fall
Maunawili 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 | 76° | 63° | 10.6" | 0 | 17 | 0 |
| February | 76° | 63° | 9.1" | 0 | 16 | 0 |
| March | 76° | 64° | 13.7" | 0 | 20 | 0 |
| April | 76° | 65° | 12.9" | 0 | 22 | 0 |
| May | 78° | 67° | 9.3" | 0 | 21 | 0 |
| June | 78° | 68° | 12.9" | 0 | 24 | 0 |
| July | 79° | 70° | 15.4" | 0 | 25 | 0 |
| August | 80° | 70° | 12.7" | 0 | 23 | 0 |
| September | 81° | 70° | 12.2" | 0 | 23 | 0 |
| October | 80° | 69° | 12.9" | 0 | 23 | 0 |
| November | 78° | 68° | 15.1" | 0 | 22 | 0 |
| December | 76° | 65° | 14.2" | 0 | 20 | 0 |
| Year | 78° | 67° | 151.0" | 0.0" | 255 | 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 Maunawili
Maunawili gets 151 inches of rain and melted snow a year. July is the wettest month and February the driest. Rain or snow falls on about 255 days a year.
A year-round growing season
Heating and cooling a home in Maunawili
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Maunawili, 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.
Maunawili and its neighbors
Maunawili borders 1 town with climate data. January nights across them vary by 1.7°. Kailua has both the coldest January nights (65°) and the hottest July afternoons (84°). Maunawili’s January low is 63° and its July high 79°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Maunawili compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Common questions about Maunawili’s climate
What is the coldest month in Maunawili?
January, with a typical high of 76° and a low of 63°.
What is the hottest month in Maunawili?
September, with a typical high of 81° and a low of 70°.
How much snow does Maunawili get?
Almost none. A normal year brings 0.0 inches.
When is the first frost in Maunawili?
Frost is uncommon. Only 0% of years see a night at 32° or below.
What is the rainiest month in Maunawili?
July, with 15.4 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 Nuuanu Rsch 4 783, HI (3 mi, snow) and Manoa Lyon Arbo 785.2, 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.