Vejret i Campos do Jordão i september

Forum posters consistently describe Campos do Jordao as a great destination year-round thanks to its genuinely pleasant mountain climate, cooler than most of Brazil given the elevation. Posters note real day-to-day and visitor-to-visitor variation in how the cool actually feels - one local resident was in winter coats in mid-May while a visitor from a cold-climate US state found the same stretch warm enough for shorts and a short-sleeve shirt. Posters consistently name the town's Swiss-alpine-styled architecture, chocolate shops and mountain scenery as the year-round draw, with September's milder shoulder-season temperatures generally rated comfortable for walking around Vila Capivari and the surrounding lookouts.

Brazil's forum notes March generally brings less rain than February across the southeast, with warm sunny days and a storm more likely at the end of the day than sustained through it. Campos do Jordão itself doesn't come up much in these broader threads, but its mountain elevation is the key difference from the Rio and São Paulo weather posters usually discuss - expect noticeably cooler days and genuinely chilly nights here even when the coast is still running hot, since altitude does more to shape this town's climate than the calendar month.