Calima: What Homeowners Should Check Afterward
Calima looks dramatic while it's happening — the property impact shows up quietly afterward.
3 March 2026 · 5 min read
Calima is the local name for the periodic Saharan dust events that reach the Canary Islands when wind patterns carry fine desert dust across from North Africa. It can turn the sky hazy orange for a day or several, reduce visibility noticeably, and leave a fine layer of dust over everything outdoors once it clears. Most homeowners notice it happening; fewer think to check its aftermath properly.
What to check once it clears
Solar panels are the single biggest thing worth checking — dust build-up measurably reduces output, and a Calima event can undo months of otherwise-clean performance in a day. AC filters are the second priority, since outdoor units and filters pull in the same dust and can clog faster than their normal schedule accounts for. Beyond that, it's worth a general exterior wipe-down — outdoor furniture, railings, terraces and pool surrounds all collect a visible film that's easy to ignore until it's tracked indoors.
- Clean solar panels and check for a drop in output
- Check and clean AC filters ahead of schedule
- Wipe down outdoor furniture, railings and terraces
- Check pool water — dust can affect clarity and chemical balance
- Rinse or wipe exterior windows if visibility is noticeably reduced
If you're not on the island when it happens
Calima doesn't wait for a convenient time, and if you're managing a Tenerife property from abroad it's easy to simply not know one has happened until your next visit. This is one of the more concrete, practical reasons second-home owners use a property-check service — a quick post-Calima look is a small addition to a routine visit, but a meaningful one for solar output and AC performance over a full season.