Pool season · California
El Paso de Robles Pool Season: the Year on One Bar
Last updated: July 25, 2026 · dates · water temp
El Paso de Robles'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.
El Paso de Robles, CA — 153 swim days a yearThe bar compresses El Paso de Robles's whole pool year into one lane rope: gray floats for the off-season, hollow teal for the April 16–May 7 opening window, solid teal for swim weeks, hollow amber for the closing stretch that ends October 29. Wherever the today marker sits, the nearest color change is your next appointment.
The El Paso de Robles pool calendar
Opening — target April 23
Target April 23; the practical window runs April 16–May 7, and the 7-day mean crosses the 61°F threshold around May 7. Cold-water starts are the cheap ones.
Closing — deadline October 29
Hold the cover until October 19, then winterize by October 29, a week ahead of the November 10 freeze normal. Late and cold beats early and warm.
Estimated water temperature by month
Monthly averages of the site's water model run on El Paso de Robles'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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 47° | 49° | 52° | 56° | 60° | 66° | 71° | 72° | 71° | 66° | 57° | 49° |
The curve peaks near 72°F — comfortable-water months here usually involve a heater or a solar cover.
Every station tells its own story: compare this curve with El Monte's pool season and Elk Grove's — neighboring normals stations can shift the windows by a week or more. The full ranking lives on the California season index.
El Paso de Robles pool season FAQ
When should I open my pool in El Paso de Robles, CA?
The site model recommends opening by April 23 — about two weeks before El Paso de Robles'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 El Paso de Robles opening guide.
When should I close my pool in El Paso de Robles?
Winterize by October 29. The model holds the deadline a week ahead of El Paso de Robles's NOAA 50% first-freeze date, so the plumbing is protected before the first hard night. The full sequence is in the El Paso de Robles closing guide.
How long is the swim season in El Paso de Robles?
El Paso de Robles averages 153 days a year with normal highs of 80°F or better — about 22 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 El Paso de Robles?
An unheated pool near El Paso de Robles typically peaks around 72°F in high summer and bottoms out near 47°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 El Paso de Robles hits the closing window
Data: NOAA 1991–2020 climate normals via Paso Robles (1.9 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.