Hardly any U.S. towns see softer January nights than Waialua
High summer brings afternoon highs near 85°. The wettest month is December; the driest is July. By precipitation alone, it ranks drier than 82% of U.S. towns. Garden chairs stay out from October to June, the months with highs of 76–84°.
A year in Waialua at a glance
Each month’s typical high and low, and what it brings.
What stands out about Waialua’s climate
Compared with towns across the U.S., with Waialua’s place in Hawaii beside it.
What a year in Waialua 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 Waimea Valley 892.2, HI, 6 miles from the town’s center, at about the same height.
The 2023 USDA map puts Waialua’s center in zone 12b: the coldest night of a typical winter, averaged over 1991–2020, reaches about 55°. Plant labels use the zone; frost dates tell you when to plant.
90° days by month
Average days at 90° or more
About 33 inches of rain a year
December is the wettest month and July the driest. Rain falls on about 260 days a year. Snow is rare: about 0.0" in a normal year at Waimea Valley 892.2, HI, so most winters see none.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Waialua
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 Waimea Valley 892.2, HI.
Living with Waialua’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. 1.9 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Waialua from natural hazards, tsunamis are the largest share (47%). Normals are averages; the hazards page covers the extremes.
Natural hazards →Waialua and its neighbors
Every town next door is within a degree of Waialua in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Waialua’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 |
|---|---|---|---|---|
| Waialua, HI | 63° | 85° | 33" | 0.0" |
| Marathon, FL | 64° | 90° | 42" | 0.0" |
| Corpus Christi, TX | 49° | 91° | 34" | 0.0" |
| Topanga, CA | 48° | 84° | 20" | 0.0" |
| Winston, OR | 37° | 86° | 33" | 0.0" |
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 Waialua compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Waialua’s place among Hawaii’s.
Waialua weather by month
Highs, lows and precipitation from the nearest NOAA station; snow, wet days and snow on the ground from Waimea Valley 892.2, HI. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground |
|---|---|---|---|---|---|---|
| January | 76° | 63° | 4.8" | 0.0" | 19 | 0 |
| February | 76° | 62° | 2.8" | 0.0" | 17 | 0 |
| March | 76° | 63° | 4.5" | 0.0" | 21 | 0 |
| April | 79° | 64° | 2.4" | 0.0" | 21 | 0 |
| May | 80° | 66° | 1.8" | 0.0" | 19 | 0 |
| June | 84° | 68° | 1.2" | 0.0" | 23 | 0 |
| July | 85° | 69° | 1.1" | 0.0" | 24 | 0 |
| August | 86° | 70° | 1.5" | 0.0" | 23 | 0 |
| September | 85° | 70° | 1.3" | 0.0" | 21 | 0 |
| October | 83° | 69° | 2.6" | 0.0" | 23 | 0 |
| November | 79° | 67° | 3.4" | 0.0" | 24 | 0 |
| December | 77° | 65° | 5.6" | 0.0" | 25 | 0 |
| Year | 80° | 66° | 33.0" | 0.0" | 260 | 0 |
Where Waialua’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: Waimea Valley 892.2, HI.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Waimea Valley 892.2, HI, 6 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 Waialua’s climate
What is the weather like in Waialua?
A typical July afternoon reaches 85°, a January night drops to 63°, and snow is almost unheard of. Milder January nights than all but 70 U.S. towns; cooler July afternoons than 52% of U.S. towns.
How cold does it get in Waialua in winter?
February nights average 62°. A night at 32° or below comes in only some winters (0.0 a year on average).
How much snow does Waialua get?
About 0.0 inches in a normal winter at Waimea Valley 892.2, HI, so most winters see none.
How hot does it get in Waialua?
July, with a typical high of 85° and a low of 69°. About 14 days a year reach 90° (Waimea Valley 892.2, HI).
When is the first and last frost in Waialua?
Most years have no frost at all: a 32° night comes in about 0% of winters at Waimea Valley 892.2, HI, usually in December or January.
What growing zone is Waialua in?
Zone 12b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 55°.
What is the best time of year to visit Waialua?
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 Waialua.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.