Pool season · California
Hemet Pool Season: the Year on One Bar
Last updated: July 15, 2026 · dates · water temp
This is the one-page view of Hemet's pool year: both model windows, the estimated water-temperature curve, and today's live position on the season bar. The detailed checklists live on the opening and closing guides; this page is the calendar you check between them.
The bar compresses Hemet's whole pool year into one lane rope: gray floats for the off-season, hollow teal for the March 26–April 16 opening window, solid teal for swim weeks, hollow amber for the closing stretch that ends November 18. Wherever the today marker sits, the nearest color change is your next appointment.
The Hemet pool calendar
Opening — target April 2
Target April 2; the practical window runs March 26–April 16, and the 7-day mean crosses the 61°F threshold around April 16. Cold-water starts are the cheap ones.
Closing — deadline November 18
Hold the cover until November 8, then winterize by November 18, a week ahead of the December 10 freeze normal. Late and cold beats early and warm.
Estimated water temperature by month
This is Hemet'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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 52° | 53° | 56° | 60° | 64° | 70° | 77° | 80° | 79° | 72° | 63° | 54° |
Warmest water typically August–September (peaking near 81°F); heaters and covers shift any month up.
Email me when Hemet hits the closing window
Data: NOAA 1991–2020 climate normals via San Jacinto (4.5 mi); live outlook by Open-Meteo. Attribution: sources · assumptions: methodology.