Photo: photographers: Forest & Kim Starr derivative work: Viriditas · CC BY 3.0Few U.S. towns have milder winter nights than Olowalu
High summer brings afternoon highs near 84°. Precipitation peaks in March and eases off in June. Its yearly precipitation falls short of 88% of U.S. towns. The outdoor season runs from October to June, with highs of 77–83°.
A year in Olowalu at a glance
Each month’s typical high and low, and what it brings.
What stands out about Olowalu’s climate
Compared with towns across the U.S., with Olowalu’s place in Hawaii beside it.
What a year in Olowalu 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 Puukolii 457.1, HI, 8 miles from the town’s center, at about the same height.
The 2023 USDA map puts Olowalu’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.
90° days by month
Average days at 90° or more
About 23 inches of rain a year
March is the wettest month and June the driest. Rain falls on about 134 days a year. Snow is rare: about 0.0" in a normal year at Waiehu Camp 484, HI, so most winters see none.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Olowalu
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 Puukolii 457.1, HI.
Living with Olowalu’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, October, November and December. 3.7 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Olowalu from natural hazards, river flooding is the largest share (33%). Normals are averages; the hazards page covers the extremes.
Natural hazards →Olowalu and similar climates
TownRatings has no climate map of the towns around Olowalu yet.
Climates most like Olowalu’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 |
|---|---|---|---|---|
| Olowalu, HI | 64° | 84° | 23" | 0.0" |
| Topanga, CA | 48° | 84° | 20" | 0.0" |
| Port Isabel, TX | 52° | 92° | 26" | 0.2" |
| Key West, FL | 65° | 90° | 42" | 0.0" |
| Winston, OR | 37° | 86° | 33" | 0.0" |
Temperatures and precipitation come from NOAA’s 5 km grid; snow and day counts from the stations named on this page.
How Olowalu compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Olowalu’s place among Hawaii’s.
Olowalu weather by month
Highs, lows and precipitation from the nearest NOAA station; snow, wet days and snow on the ground from Waiehu Camp 484, HI. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground |
|---|---|---|---|---|---|---|
| January | 77° | 64° | 3.4" | 0.0" | 11 | 0 |
| February | 77° | 64° | 2.1" | 0.0" | 11 | 0 |
| March | 78° | 65° | 3.7" | 0.0" | 13 | 0 |
| April | 79° | 66° | 1.7" | 0.0" | 11 | 0 |
| May | 81° | 67° | 1.2" | 0.0" | 10 | 0 |
| June | 83° | 69° | 0.6" | 0.0" | 8 | 0 |
| July | 84° | 70° | 0.8" | 0.0" | 11 | 0 |
| August | 85° | 71° | 0.9" | 0.0" | 11 | 0 |
| September | 85° | 70° | 1.2" | 0.0" | 10 | 0 |
| October | 83° | 70° | 1.9" | 0.0" | 11 | 0 |
| November | 80° | 68° | 2.6" | 0.0" | 13 | 0 |
| December | 78° | 66° | 3.2" | 0.0" | 13 | 0 |
| Year | 81° | 67° | 23.3" | 0.0" | 134 | 0 |
Where Olowalu’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: Waiehu Camp 484, HI.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Puukolii 457.1, HI, 8 miles from the town’s center, at about the same height; 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 Olowalu’s climate
What is the weather like in Olowalu?
A typical July afternoon reaches 84°, a January night drops to 64°, and snow is almost unheard of. Milder January nights than all but 55 U.S. towns; cooler July afternoons than 59% of U.S. towns.
How cold does it get in Olowalu in winter?
February nights average 64°. A night at 32° or below comes in only some winters (0.0 a year on average).
How much snow does Olowalu get?
About 0.0 inches in a normal winter at Waiehu Camp 484, HI, so most winters see none.
How hot does it get in Olowalu?
July, with a typical high of 84° and a low of 70°. About 3 days a year reach 90° (Puukolii 457.1, HI).
When is the first and last frost in Olowalu?
Most years have no frost at all: a 32° night comes in about 0% of winters at Puukolii 457.1, HI, usually in December or January.
What growing zone is Olowalu 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 Olowalu?
By one simple rule (highs of 62–84° and lows of 40° or more), January, February, March, April, May, June, 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 Olowalu.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.