Pool season · California
Oxnard Pool Season: the Year on One Bar
Last updated: July 25, 2026 · dates · water temp
Oxnard's whole pool calendar, condensed: when the water warms, when it cools, and where today falls between those edges. Use the opening guide and closing guide for the step-by-step work; keep this page for the dates.
Oxnard, CA — 0 swim days a yearEach dot on the bar is one week of Oxnard's typical year, colored by what the model says that week is for: gray weeks are off-season, hollow teal marks the opening window (April 25–May 16), solid teal is swim season, and hollow amber is the closing window ending November 26. The black marker is today — its position against the colors is the entire executive summary.
The Oxnard pool calendar
Opening — target May 2
Target May 2; the practical window runs April 25–May 16, and the 7-day mean crosses the 61°F threshold around May 16. Cold-water starts are the cheap ones.
Closing — deadline November 26
The window opens November 16 once water leaves the algae zone; the model deadline is November 26, a week ahead of the December 28 freeze normal.
Estimated water temperature by month
Monthly averages of the site's water model run on Oxnard'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 56° | 56° | 57° | 59° | 60° | 63° | 66° | 67° | 68° | 65° | 63° | 58° |
The curve peaks near 69°F — comfortable-water months here usually involve a heater or a solar cover.
Every station tells its own story: compare this curve with Orange's pool season and Palmdale's — neighboring normals stations can shift the windows by a week or more. The full ranking lives on the California season index.
Oxnard pool season FAQ
When should I open my pool in Oxnard, CA?
The site model recommends opening by May 2 — about two weeks before Oxnard's 7-day mean temperature crosses 61°F, while the water is still too cold for algae. The step-by-step sequence is in the Oxnard opening guide.
When should I close my pool in Oxnard?
Winterize by November 26. The model holds the deadline a week ahead of Oxnard's NOAA 50% first-freeze date, so the plumbing is protected before the first hard night. The full sequence is in the Oxnard closing guide.
How long is the swim season in Oxnard?
Oxnard averages 0 days a year with normal highs of 80°F or better — about 31 days later than the California median. The California season index ranks all 147 covered cities by the same metric.
How warm does pool water get in Oxnard?
An unheated pool near Oxnard typically peaks around 69°F in high summer and bottoms out near 56°F in winter, never quite reaching the 78°F comfort line without a heater or solar cover. The month-by-month curve above shows the whole cycle; the methodology page explains the ±5°F error bars.
Email me when Oxnard hits the closing window
Data: NOAA 1991–2020 climate normals via Oxnard (0.4 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.