PoolWindow

Pool season · California

Huntington Beach Pool Season: the Year on One Bar

Last updated: July 15, 2026 · dates · water temp

One bar, one year, one Huntington Beach pool. The season bar below draws everything the model knows — opening window, prime season, closing window — against today's date, with the working details one click away on the opening and closing pages.

J F M A M J J A S O N D today (build date)

off-season opening window swim season closing window

Reading it takes ten seconds: 52 dots, one per week. Solid teal is Huntington Beach's swim season; the hollow teal run before it (March 10 to March 31) is when to open; the hollow amber run after is when to close, with December 2 as the deadline; gray is the covered season. Today's marker shows where you stand in that cycle right now.

The Huntington Beach pool calendar

March 17open by
December 2close by
4180°F+ days
74°Fwater peak

Opening — target March 17

Open by March 17 — a two-week head start on the March 31 crossing keeps startup chemistry small and beats the local service rush.

Full opening guide

Closing — deadline December 2

Hold the cover until November 22, then winterize by December 2, a week ahead of the December 25 freeze normal. Late and cold beats early and warm.

Full closing guide

Where the water sits today

SEASONAL VIEW

Estimated unheated pool water temp (site model, ±5°F). The live estimate loads in your browser from Open-Meteo air temperatures; in a typical year Huntington Beach water runs about 57°F at its winter floor and 74°F at its summer peak.

40 45 50 55 60 65 70 75 80 85 58 open 65 algae

Estimated water temperature by month

This is Huntington Beach's typical-year water curve: the same EWMA model as the live widget, run on the 1991–2020 normals instead of this week's weather.

Site-model seasonal water estimates for an unheated in-ground pool near Santa Ana John Wayne Airport — ±5°F, see methodology.
JanFebMarAprMayJunJulAugSepOctNovDec
57°58°59°61°64°67°71°73°74°70°65°59°

The curve peaks near 74°F — comfortable-water months here usually involve a heater or a solar cover.

Data: NOAA 1991–2020 climate normals via Santa Ana John Wayne Airport (7.9 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.