The Best Time of Year to visit Peru?

There is no bad time to visit Cusco & Machu Picchu.  The climate roughly falls into two distinct periods, the dry season, between May and the end of September, and the wet season being December, January & February.

Between June and August, rainfall is virtually nonexistent, averaging a mere 5 mm / 0.2 inches per month.  However, the climate and weather experienced by Cusco in December, January and February is quite different and considerably damper, with monthly precipitation levels staying around 150 mm / 5.9 inches.

Even in the height of the wet season, Cusco still enjoys plenty of fine weather, and a favorable climate to match, with this being the hottest time of the year.  If it does rain, it is quite likely to be a short, heavy shower, followed by sunshine.  In fact, January and February can be quite sunny at times, when temperatures are known to average 28°C / 82°F and regularly top 30°C / 86°F.
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