Head to La Paz in January to experience the intriguing Alasitas festival, where locals buy miniatures and symbolic currency to honour the Andean god Ekeko. It is the best time of year to visit Bolivia to see the stunning mirror effect wrought by the rains on the Salar de Uyuni (though access to the centre of the salt flats is limited).
January in the Altiplano is relatively cool, with average maximum temperatures around 16°C and about 118mm of rainfall, while Sucre enjoys milder days reaching around 22°C and sees about 152mm of precipitation. In the lowlands, Santa Cruz experiences temperatures near 31°C and roughly 201mm of rain.