Miami woke up to classic May-in-the-305 weather on Monday morning, May 11, 2026: clear skies, sticky air, and temperatures already near 81°F at Miami International Airport with humidity hovering around 80 percent. Forecasters expect another hot one, with a high near 86°F and afternoon heat indices pushing around 100°F in parts of the metro.
Afternoon Storms Possible
There is a slight chance of showers and isolated thunderstorms through late morning, with scattered storms becoming more likely in the afternoon and early evening, especially over inland areas. The National Weather Service in Miami is calling for roughly a 20 percent chance of precipitation today, with higher odds Tuesday and Wednesday as a front slides south (National Weather Service). The stronger cells could drop brief heavy downpours and kick up gusty winds, and any slow-moving storm raises the risk of urban flooding in low-lying neighborhoods.
Heat And Where To Cool Off
Even outside the storms, the humidity will keep the heat feeling uncomfortable. Outdoor workers and vulnerable residents are urged to take frequent breaks, drink plenty of water, and avoid prolonged exertion during the hottest part of the day. The City of Miami operates seasonal cooling centers and other heat relief resources, with locations and hours listed on the city’s site (City of Miami).
Marine And Travel Notes
Boaters and beachgoers should keep an eye on the sky, as scattered thunderstorms are expected over coastal waters each day this week. Any storm can quickly turn conditions nasty, with locally hazardous winds and choppy seas. Outside of thunderstorms, light southerly winds and generally calm seas are expected, but the National Weather Service continues to caution that even a single storm can briefly create dangerous conditions for small craft (National Weather Service).
