Tropical cyclones in 2025

During 2025, tropical cyclones formed in seven major bodies of water, commonly known as tropical cyclone basins. They were named by various weather agencies when they attained maximum sustained winds of 35 knots (65 km/h; 40 mph). Throughout the year, a total of 138 systems formed, with 94 of them being named. The most intense storm of the year was Hurricane Melissa in the North Atlantic Ocean, which had a minimum pressure of 892 hPa (26.34 inHg). The deadliest and costliest tropical cyclone of the year was Cyclone Senyar in the North Indian Ocean, which caused at least 2,253 deaths and over $20 billion in damage in Thailand, Malaysia and Indonesia. Among this year's systems, twenty-six became major tropical cyclones, of which five intensified into Category 5 tropical cyclones on the Saffir–Simpson scale (SSHWS). The accumulated cyclone energy (ACE) index for the 2025 (seven basins combined), as calculated by Colorado State University (CSU) was 728.6 units, which was near-normal of the 1991–2020 mean of 770.2 units.

The most active basin in the year was the Western Pacific Ocean, which had twenty-seven named systems. The Eastern Pacific Ocean had an above-average season, with twenty named storms forming; eleven of those became hurricanes, of which four strengthened into major hurricanes. The North Atlantic Ocean had a total of thirteen named storms. The North Indian Ocean was active, with four named storms forming. Activity across the southern hemisphere's three basins (South-West Indian, Australian, and South Pacific) was fairly significant, with the regions recording twenty-nine named storms altogether, with the most intense Southern Hemisphere cyclone of the year, Cyclone Vince in the South-West Indian basin, peaking with a central pressure of 923 hPa.

Tropical cyclones are primarily monitored by ten warning centers around the world, which are designated as a Regional Specialized Meteorological Center (RSMC) or a Tropical Cyclone Warning Center (TCWC) by the World Meteorological Organization (WMO). These centers are: National Hurricane Center (NHC), Central Pacific Hurricane Center (CPHC), Japan Meteorological Agency (JMA), Indian Meteorological Department (IMD), Météo-France (MFR), Indonesia's Meteorology, Climatology, and Geophysical Agency (BMKG), Australian Bureau of Meteorology (BoM), Papua New Guinea's National Weather Service (PNGNWS), Fiji Meteorological Service (FMS), and New Zealand's MetService. Unofficial, but still notable, warning centers include the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA; albeit official within the Philippines), the United States's Joint Typhoon Warning Center (JTWC), and the Brazilian Navy Hydrographic Center.