Miami Weather Update - Sunday, August 31, 2025

Miami experienced a day dominated by thunderstorms and heavy rainfall, with temperatures reaching the low 90s and tropical humidity prevailing citywide.

Morning: Skies began the day with variable cloudiness, offering occasional breaks of sunshine. Temperatures climbed quickly into the mid-80s under muggy conditions, with relative humidity near 80 percent. Early scattered showers gave way to more organized thunderstorm activity by late morning.

Afternoon: A line of heavy thunderstorms swept across Miami, producing pockets of intense rainfall and localized ponding on roadways. The afternoon high peaked at 91°F, with sustained winds from the southwest at 5 to 10 mph. Rainfall rates briefly approached one inch per hour in the heaviest cells, and lightning strikes were frequent across the metro area.

Evening & Overnight: Thunderstorms persisted into the evening hours, gradually diminishing after midnight. Showers remained likely, with the nighttime low falling to 75°F. Winds shifted to a west-northwest direction at 5 to 10 mph, and the chance of rain remained near 100 percent for early Monday.

Impacts & Outlook:

• Roadway flooding was reported in low-lying neighborhoods, prompting a few short-term closures.
• Commuters are advised to allow extra travel time Monday morning and to exercise caution in flooded areas.
• The storm system will move offshore by early Monday, but scattered thunderstorms and high humidity will continue into the start of the workweek.