Dry Season Pool Care in Bali: Evaporation, UV and the April-October Routine
Everyone warns you about the wet season; fewer mention that the dry season quietly runs its own campaign against your pool. From April to October the enemies change — rain and debris give way to relentless sun, evaporation and the heaviest guest loads of the year.
What the dry season does
- Evaporation surges — regular top-ups that owners routinely mistake for a leak (the bucket test settles it)
- UV peaks — unprotected chlorine is destroyed by early afternoon, making stabiliser the season’s key chemical
- Concentration creep: evaporation removes water but leaves minerals behind, so calcium and salts slowly climb — hello waterline scale
- High season: full villas, sunscreen loads and daily swimming from July to September
The Apr-Oct routine
- Verify stabiliser at the season’s start — the wet season just diluted it
- Watch top-up frequency as a trend, not an annoyance
- Test calcium in the monthly workup; dilute if it climbs
- Time swimming-heavy weeks with extra dosing and pump hours
The transition points
The season changes — October storms arriving, April drying out — are when pools get caught by yesterday’s settings. Care that adjusts with the calendar is the whole game in Bali; it is how our maintenance service is built.
Different season, different enemies, same principle: adjust or pay.
Set up for the dry season
We adjust dosing, stabiliser and schedules seasonally — and report every visit in writing.