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The climate of Puerto Rico, city by city

This page lists the 21 cities in Puerto Rico for which climate normals are available. Each entry covers temperature, rainfall and how the climate changed between 1940 and 2025, computed from ERA5 reanalysis data.

Average across cities

25.4°C

Annual rainfall

1,016mm

Spread between cities

1.4°C

Warming

+1.3°C

Departure from normal across the country's largest cities, 1940–2025

Rankings

Across the 21 cities in this country with a measured climate.

The warmest

  1. 1Mayagüez26 °C
  2. 2Aguadilla25.9 °C
  3. 3San Juan25.8 °C
  4. 4Bayamón25.8 °C
  5. 5Carolina25.8 °C
  6. 6Levittown25.8 °C
  7. 7Catano25.8 °C
  8. 8Candelaria25.8 °C
  9. 9Vega Baja25.5 °C
  10. 10Barceloneta25.5 °C

The coldest

  1. 1Cayey24.6 °C
  2. 2Ponce24.7 °C
  3. 3Caguas25 °C
  4. 4Guaynabo25 °C
  5. 5Trujillo Alto25 °C
  6. 6Guayama25.1 °C
  7. 7Yauco25.1 °C
  8. 8Arecibo25.2 °C
  9. 9Fajardo25.4 °C
  10. 10Humacao25.4 °C

The wettest

  1. 1Fajardo1,380 mm
  2. 2Humacao1,380 mm
  3. 3Caguas1,258 mm
  4. 4Guaynabo1,258 mm
  5. 5Trujillo Alto1,258 mm
  6. 6Guayama1,203 mm
  7. 7Arecibo1,142 mm
  8. 8Vega Baja1,030 mm
  9. 9Barceloneta1,030 mm
  10. 10Manati1,030 mm

Frequently asked questions

What is the hottest city in Puerto Rico?

The hottest city in Puerto Rico is Mayagüez, with an average annual temperature of 26.0 °C.

What is the coldest city in Puerto Rico?

The coldest city in Puerto Rico is Cayey, with an average annual temperature of 24.6 °C.

What is the wettest city in Puerto Rico?

The wettest city in Puerto Rico is Fajardo, with 1,380 mm of precipitation per year.

Has the climate of Puerto Rico warmed?

Based on its largest cities, Puerto Rico warmed by +1.3 °C between 1940 and 2025.

Cities by region

Aguadilla1

Arecibo1

Barceloneta1

Bayamón1

Caguas1

Carolina1

Cataño1

Cayey1

Fajardo1

Guayama1

Guaynabo1

Humacao1

Manatí1

Mayagüez1

Ponce1

San Juan1

Toa Baja2

Trujillo Alto1

Vega Baja1

Yauco1