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Live forecasts update automatically; written guidance last reviewed 20 June 2026 by the BritainNow weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Rio de Janeiro weather is tropical and warm year-round, with summer from December to March bringing heat and heavy downpours, while winter from June to September offers milder, drier conditions. The live forecast above gives you the latest conditions for planning your trip.
What’s the weather like in Rio de Janeiro throughout the year?
Rio de Janeiro weather by month follows a clear pattern: summer (December to March) sees temperatures often reaching the low 30s Celsius, high humidity and frequent afternoon storms. If you’re checking rio de janeiro weather december or rio de janeiro weather february, expect hot, sticky days with a high chance of tropical rain. Winter (June to September) is milder and far drier — temperatures sit around 18–22°C, making it the most comfortable season for sightseeing. Shoulder months like rio de janeiro weather november and April offer a balance of warmth and lower rainfall.
When is the best time to visit Rio de Janeiro?
For dry, sunny days, aim for May through October — winter and early spring bring blue skies and pleasant temperatures. If you want the Carnival energy and don’t mind the humidity, December to February delivers the classic Rio heat. For those who prefer Fahrenheit, summer highs sit around 86–90°F and winter lows around 64–72°F. For longer-range planning, the weather in rio de janeiro 14 days and rio de janeiro weather 15 day forecast are useful guides, though tropical conditions can change quickly.
Does Rio de Janeiro have a rainy season?
Yes, the rainy season runs from December to March, with January and February typically seeing the heaviest downpours. Rain usually comes as short, intense afternoon thunderstorms rather than all-day drizzle.
What’s the sea temperature in Rio?
The Atlantic Ocean off Rio stays warm year-round, ranging from 22°C (72°F) in winter to 27°C (81°F) in summer. Swimming is comfortable in any season.
Is Rio de Janeiro humid in summer?
Very. Humidity often sits above 70% from December to March, making the heat feel more intense. Light clothing, plenty of water and air conditioning are advisable during summer visits.
For more UK-focused forecasts, visit our UK weather hub or check the 10 day weather forecast UK for conditions at home.