Pool season · Hawaii
Honolulu Pool Season: the Year on One Bar
Last updated: July 15, 2026 · dates · water temp
Honolulu runs a twelve-month pool calendar — the model finds no week cold enough to force a closing. This page tracks the water-temperature curve and the prime-season stretch; the spring refresh and winter care guides cover the routines that replace opening and closing here. Keep it bookmarked as the between-guides dashboard for the year.
One color, 52 dots: Honolulu's bar has no gray because the model never finds a week that forces a closing. Use the monthly water estimates below instead — the swing from 70°F to 75°F is what actually shapes swimming and maintenance here, from heater decisions at the cool end to sanitizer demand across the 72 days of genuine summer.
The Honolulu pool calendar
Spring refresh
The model finds no closing week in Honolulu — maintenance is continuous, with a 72-day prime stretch of 80°F+ afternoons.
Winter care
The model finds no closing week in Honolulu — maintenance is continuous, with a 72-day prime stretch of 80°F+ afternoons.
Estimated water temperature by month
Monthly averages of the site's water model run on Honolulu's own normals — the shape of a typical year, not a forecast. The widget above shows where the current year actually sits.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 70° | 70° | 70° | 70° | 72° | 73° | 74° | 75° | 75° | 75° | 74° | 72° |
The curve peaks near 75°F — comfortable-water months here usually involve a heater or a solar cover.
Email me when Honolulu hits the closing window
Data: NOAA 1991–2020 climate normals via Manoa Lyon Arbo 785.2 (2.8 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.