Maunawili sits near the top of U.S. towns for precipitation, with 151 inches a year
Expect July afternoons of about 79°. Winters are mild: January nights here are milder than in almost every U.S. town. Seasons differ by 18°, from the coldest nights to the warmest afternoons. The outdoor season runs from January to December, with highs of 76–81°.
A year in Maunawili at a glance
Each month’s typical high and low, and what it brings.
What stands out about Maunawili’s climate
Compared with towns across the U.S., with Maunawili’s place in Hawaii beside it.
What a year in Maunawili feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
Frost is rare
Frost and day counts come from NOAA’s station at Manoa Lyon Arbo 785.2, HI, 3 miles from the town’s center, 320 ft higher.
The 2023 USDA map puts Maunawili’s center in zone 12b: the coldest night of a typical winter, averaged over 1991–2020, reaches about 58°. Plant labels use the zone; frost dates tell you when to plant.
About 151 inches of rain a year
July is the wettest month and February the driest. Rain falls on about 255 days a year. Snow is rare: about 0.0" in a normal year at Nuuanu Rsch 4 783, HI, so most winters see none.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Maunawili
0% of the work is heating, so air conditioning is the bigger bill. No month averages under 55°.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Manoa Lyon Arbo 785.2, HI.
Living with Maunawili’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
Zone 12b. Frost almost never comes, so tender plants can often stay out through winter.
Months with highs of 62–84° and lows of 40° or more: January, February, March, April, May, June, July, August, September, October, November and December. 1.3 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Maunawili from natural hazards, river flooding is the largest share (55%). Normals are averages; the hazards page covers the extremes.
Natural hazards →Maunawili and its neighbors
Kailua the hottest July afternoons (84°, 5° warmer). Differences under a degree are within what the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Maunawili’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| Maunawili, HI | 63° | 79° | 151" | 0.0" |
| Ketchikan, AK | 32° | 65° | 150" | 35" |
| Tillamook, OR | 38° | 71° | 87" | 0.2" |
| Hoquiam, WA | 37° | 68° | 81" | 0.5" |
| Pascagoula, MS | 43° | 89° | 66" | 0.1" |
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value. Snow and frost-free days come from the nearest weather station, so neighbors often share them.
How Maunawili compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Maunawili’s place among Hawaii’s.
Maunawili weather by month
Highs, lows and precipitation from the nearest NOAA station; snow, wet days and snow on the ground from Nuuanu Rsch 4 783, HI. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground |
|---|---|---|---|---|---|---|
| January | 76° | 63° | 10.6" | 0.0" | 17 | 0 |
| February | 76° | 63° | 9.1" | 0.0" | 16 | 0 |
| March | 76° | 64° | 13.7" | 0.0" | 20 | 0 |
| April | 76° | 65° | 12.9" | 0.0" | 22 | 0 |
| May | 78° | 67° | 9.3" | 0.0" | 21 | 0 |
| June | 78° | 68° | 12.9" | 0.0" | 24 | 0 |
| July | 79° | 70° | 15.4" | 0.0" | 25 | 0 |
| August | 80° | 70° | 12.7" | 0.0" | 23 | 0 |
| September | 81° | 70° | 12.2" | 0.0" | 23 | 0 |
| October | 80° | 69° | 12.9" | 0.0" | 23 | 0 |
| November | 78° | 68° | 15.1" | 0.0" | 22 | 0 |
| December | 76° | 65° | 14.2" | 0.0" | 20 | 0 |
| Year | 78° | 67° | 151.0" | 0.0" | 255 | 0 |
Where Maunawili’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s 1991–2020 normals at the nearest station (NOAA’s grid doesn’t cover Hawaii).
- Snow: Nuuanu Rsch 4 783, HI.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Manoa Lyon Arbo 785.2, HI, 3 miles from the town’s center, 320 ft higher; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about Maunawili’s climate
What is the weather like in Maunawili?
A typical July afternoon reaches 79°, a January night drops to 63°, and snow is almost unheard of. Milder January nights than all but 69 U.S. towns; cooler July afternoons than 95% of U.S. towns.
How cold does it get in Maunawili in winter?
January nights average 63°. A night at 32° or below comes in only some winters (0.0 a year on average).
How much snow does Maunawili get?
About 0.0 inches in a normal winter at Nuuanu Rsch 4 783, HI, so most winters see none.
How hot does it get in Maunawili?
July, with a typical high of 79°. 90° days are rare: none in a normal year at Manoa Lyon Arbo 785.2, HI.
When is the first and last frost in Maunawili?
Most years have no frost at all: a 32° night comes in about 0% of winters at Manoa Lyon Arbo 785.2, HI, usually in December or January.
What growing zone is Maunawili in?
Zone 12b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 58°.
What is the best time of year to visit Maunawili?
By one simple rule (highs of 62–84° and lows of 40° or more), January, February, March, April, May, June, July, August, September, October, November and December. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Neighbors talk weather
Gardens, snow, and the best days of the year in Maunawili.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.