It might still be a wash-out of a month in much of Bolivia, with rain especially heavy in the Amazon, but it's slowly drying up in the Andes and savanna. Sun is definitely on the horizon, if not already here in places, with average daily temperatures in much of the savanna only a degree or two off their annual highs. It's an important time for harvesting coca (in the Andes and parts of the Amazon), and grapes (in the savanna)—plus, there's something to celebrate! Carnival can also fall at the beginning of March, as can Holy Week.
July is the peak season in Bolivia, with warm, bright, largely sunny days, though things can feel cooler up on the Altiplano. Such reliable weather makes this a brilliant month for outdoor activities, from hiking and mountain biking in the Andes to expeditions into the wildlife-rich Amazon. July is also one of the busiest months, ruling out special deals on accommodation and tours. Plan ahead if you want to visit during this popular time.
October is the height of spring in Bolivia. If you want to sidestep the crowds of winter, this is a fantastic time to visit, as there is still plenty of dry, sunny weather everywhere, from the depths of the Amazon to the heights of the Andes. Rains are slowly but steadily increasing, so come prepared for the odd downpour. Shoulder-season benefits are many, especially when it comes to scoring deals on tours, outdoor activities, and accommodation. And the drop in visitor numbers is a blessing at big-hitters like the Salar de Uyuni and Lake Titicaca.
The onset of spring in September marks the end of the peak season rush in Bolivia, so in many ways, this is a fantastic month to visit, with largely dry days, warm weather, and far fewer crowds. As the country edges into the less busy shoulder season, you should be able to snag some deals on tours and accommodation. While rising temperatures have taken the bitter edge off nights on the Altiplano, this is the hottest time of year in the Amazon.
One of the driest, brightest months of the year, June ushers in the start of peak season. But with the biggest crowds still yet to arrive, this is a terrific time for snapping up the few remaining deals on tours and accommodation. Cooler temperatures everywhere, from the Andes to the Amazon, also mean this is an excellent month for outdoor pursuits, but you'll want to pack layers for the chilly nights. The country celebrates some memorable festivals now, too, such as the winter solstice celebrations at Tiwanaku.