The Amazon is a region known for its unpredictable climate, so you shouldn't be surprised if a merciless cloudburst starts during the so-called dry season (from May to November) or if the sky looks transparent and full of fluffy white clouds during the rainy season (from December to April).
WHEN TO GO TO PUERTO MALDONADO
Despite the weather's caprices, it's best to visit
Puerto Maldonado - Tambopata - Candamo in the dry season, as this way you have a better chance of walking quietly along the forest trails and maybe coming across some of the evasive animals that inhabit this corner of the planet.