Summer in Rio de Janeiro peaks in January. This period is characterized by high temperatures, high humidity, and frequent rainfall. Daily highs average around 30C (86F), but can often exceed this, while nighttime lows rarely drop below 23C (73F). The combination of heat and humidity can make it feel significantly hotter. Rainfall is typically in the form of short, heavy showers, often in the afternoon or evening, leaving the rest of the day sunny.
Understanding the climatic conditions prevalent during this month is crucial for travelers planning a visit. Packing appropriate clothing, planning outdoor activities strategically, and being prepared for potential rain showers can significantly enhance the visitor experience. Historically, January has been a popular time for tourism, coinciding with the summer holidays in many countries and offering warm weather ideal for enjoying the city’s beaches and outdoor attractions. This also coincides with Rio’s vibrant carnival season, which often spills over into early January.