Excessive Heat in Puerto Rico
Every excessive heat event the National Weather Service has filed in Puerto Rico, year by year, with the most significant episodes. Heat at or above the local excessive heat warning criteria, or heat that caused deaths.
The most significant on the map
The most significant excessive heat episodes in Puerto Rico.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The record
- Events
- 184
- Deaths
- 0
- Injuries
- 0
- Damage
- None recorded
Every year
The most significant
Ranked by deaths, injuries, damage and size together.
- Excessive Heat in Puerto Rico, June 7 to 10, 2024Above normal temperature and moisture has continued to prevail across the area, resulting in excessive heat indices across many coastal and urban areas in the islands. These heat values lead to the issuance of Excessive Heat Warnings across the region.
- Excessive Heat in Puerto Rico, June 11 to 15, 2024Above normal temperature and moisture has continued to prevail across the area, resulting in excessive heat indices across many coastal and urban areas in the islands. These heat values lead to the issuance of Excessive Heat Warnings across the region.
- Excessive Heat in Puerto Rico, September 21 to 25, 2024Above normal temperature and moisture have continued to prevail across the area, resulting in excessive heat indices across many coastal and urban areas in the islands. These heat values lead to the issuance of Excessive Heat Warnings across the region.
- Excessive Heat in Puerto Rico, June 25 to 26, 2024Above normal temperature and moisture has continued to prevail across the area, resulting in excessive heat indices across many coastal and urban areas in the islands. These heat values lead to the issuance of Excessive Heat Warnings across the region.
- Excessive Heat in Puerto Rico, September 1 to 30, 2023Excessive heat conditions have not stopped in the month of September. Heat indices reached 108F or more almost each day. These observations are widespread along the Mesonet, covering most of the urban and coastal areas.
- Excessive Heat in Puerto Rico, September 15 to 17, 2024Above normal temperature and moisture have continued to prevail across the area, resulting in excessive heat indices across many coastal and urban areas in the islands. These heat values lead to the issuance of Excessive Heat Warnings across the region.
- Excessive Heat in Puerto Rico, October 24, 2024Above normal temperature and moisture have continued to prevail across the area, resulting in excessive heat indices across many coastal and urban areas in the islands. These heat values lead to the issuance of Excessive Heat Warnings across the region.
- Excessive Heat in Puerto Rico, October 10 to 11, 2024Above normal temperature and moisture have continued to prevail across the area, resulting in excessive heat indices across many coastal and urban areas in the islands. These heat values lead to the issuance of Excessive Heat Warnings across the region.
- Excessive Heat in Puerto Rico, May 20 to 21, 2024Southeasterly winds steering warmer tropical air into the islands, and sufficient moisture lead to heat index values exceeding Heat Advisory criteria across most coastal and lower elevation areas.
- Excessive Heat in Puerto Rico, July 6, 2024Above normal temperature and moisture has continued to prevail across the area, resulting in excessive heat indices across many coastal and urban areas in the islands. These heat values lead to the issuance of Excessive Heat Warnings across the region.
- Excessive Heat in Puerto Rico, September 28, 2024Above normal temperature and moisture have continued to prevail across the area, resulting in excessive heat indices across many coastal and urban areas in the islands. These heat values lead to the issuance of Excessive Heat Warnings across the region.
- Excessive Heat in Puerto Rico, June 1 to 30, 2023Extremely hot conditions persisted through the entire month of June for all the climatological sites. Several factors contributed to this hot spell.
- Excessive Heat in Puerto Rico, May 26 to 28, 2024Southeasterly winds steering warmer tropical air into the islands, and sufficient moisture lead to heat index values exceeding Heat Advisory criteria across most coastal and lower elevation areas.
- Excessive Heat in Puerto Rico, July 20 to 22, 2023Seasonably to above normal temperatures continued for most of Puerto Rico, as well as dew points above 80 degrees. This resulted in heat indices above 112 degrees for many coastal areas of the north, west, and east, as well as valleys in the central interior.
- Excessive Heat in Puerto Rico, September 1 to 4, 2024Above normal temperature and moisture have continued to prevail across the area, resulting in excessive heat indices across many coastal and urban areas in the islands. These heat values lead to the issuance of Excessive Heat Warnings across the region.
- Excessive Heat in Puerto Rico, July 16 to 17, 2024The streak of above normal temperatures and moisture lingered in the islands, leading to excessive heat indices across the island.
- Excessive Heat in Puerto Rico, July 30 to 31, 2023Seasonably to above normal temperatures continued for most of Puerto Rico, as well as dew points above 80 degrees. This resulted in heat indices above 112 degrees for many coastal areas of the north, west, and east, as well as valleys in the central interior.
- Excessive Heat in Puerto Rico, July 2, 2023Seasonably to above normal temperatures continued for most of Puerto Rico, as well as dew points above 80 degrees. This resulted in heat indices above 112 degrees for many coastal areas of the north, west, and east, as well as valleys in the central interior.
- Excessive Heat in Puerto Rico, August 3, 2024The combination of hot temperatures, high low-level moisture, and a Saharan Air Layer results in dangerous heat levels for people's health, especially in urban and coastal areas.
- Excessive Heat in Puerto Rico, August 29 to 30, 2024The area was experiencing an east-to-southeasterly wind pattern with above-normal sea surface temperatures, warmer-than-normal minimum temperatures, and near-to-above-normal moisture content.
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Sources
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24.