When to go
The best time to visit Salar de Uyuni
Mirror, hexagons or a bit of both — timing the flat through the year.
The Salar through the year
| Season | What you get |
|---|---|
| Wet (Dec–Apr) | The sky-mirror; more rain and cloud, some access limits |
| Dry (May–Nov) | White salt hexagons, clear skies, full expedition access |
| Transition (late Nov / Apr) | Sometimes a mix of water and dry salt |
| Nights, year-round | Very cold — sub-zero on the altiplano |
It all comes down to water
Unlike most destinations, the best time to visit Uyuni depends less on temperature and more on whether there's water on the flat. That single factor decides whether you see the mirror or the hexagons, so 'best' genuinely depends on which experience you're after. Start there, then weigh the weather and access trade-offs that come with each season.
For the mirror: wet season
To chase the reflection, target the wet season, roughly December to April, with the highest odds around the middle of that window. Remember it's weather-dependent — you're improving your chances, not guaranteeing the mirror on a given day — and that rain, cloud and occasional access limits come as part of the package. Flexibility with your dates helps.
For the expedition: dry season
If your priority is the three-day expedition, reliable weather and access to islands and longer routes, choose the dry season, about May to November. Skies are clearer, logistics are dependable, and the classic hard-salt landscape with its perspective photos is at its best. You forgo the mirror, but you gain certainty and range.
The cold is constant
Whatever the season, the altiplano is cold, and nights are genuinely freezing — often well below zero — because of the altitude. Days can be warm and intensely sunny while mornings and evenings are bitter. Packing serious warm layers is non-negotiable year-round; many first-timers underestimate just how cold a clear high-desert night can be.
Deciding your window
Pin down whether the mirror or the expedition matters more, pick the matching season, then, if you can, build in a little date flexibility — especially for the weather-dependent mirror. Get the season right and Uyuni delivers one of the most extraordinary landscapes on earth; get it wrong and you may arrive expecting one thing and find quite another.
Still deciding mirror season or dry season?
Leave your email and your target month — we'll send you the seasons-and-tours rundown for that specific window.