São Paulo’s megacity glow pushes astronomy toward Serra da Mantiqueira and coastal ranges. Humid subtropical nights reward patience — post-frontal dry air is when faint structure appears.
Summer thunderstorms often clear into sharp late-night windows.
Brazil · Southeast Brazil · ~23.6°S
Check the live Tonight score, best clear window, and next ISS pass on this page, then open a tool with coordinates prefilled.
Learn: Is tonight good for stargazing? · How to see the Milky Way