When Do Hurricane Season Start May 2026

For millions of residents living along the Atlantic and Gulf coasts, the calendar carries an extra layer of meaning. While the first day of summer is marked by solstices and barbecues, the date that truly dictates the rhythm of life is June 1.

But is that the universal answer? Not exactly. Depending on where you live—from the bustling ports of Shanghai to the vulnerable deltas of Bangladesh—the answer to "when does hurricane season start?" varies significantly. when do hurricane season start

While June 1 is the official start, scientists have noticed a troubling trend over the last decade: storms are forming before the bell rings. In 2023, an unnamed subtropical storm formed in January. In 2021, Tropical Storm Ana formed on May 22. Climatologists call this a shift toward a "longer season," though the peak remains firmly in September. The Eastern Pacific: May 15 – November 30 For the west coast of Mexico and the Hawaiian Islands, the hurricane season starts two and a half weeks earlier . For millions of residents living along the Atlantic

Here is the definitive guide to the official start dates of hurricane (or typhoon/cyclone) season across the globe. For the United States, the Caribbean, and the Gulf of Mexico, the answer is ironclad: June 1 . Not exactly