Puerto Rico has an average annual temperature of
80.6°F
(across all 12 cities) with approximately
1243 mm of annual precipitation
and average humidity of 78%.
The warmest city is Arecibo
with average July highs of 88°F,
while Caguas
is the coldest with average January lows of 68.2°F.
This page covers 45 years of NASA POWER climate data (1981–2025)
including temperature, rainfall, humidity, wind speed, and solar radiation.
Sep is typically the warmest month across Puerto Rico with average highs around
88.3°F, while
Mar is the coldest with average lows near
71.6°F.
Sep is the wettest month with approximately
159 mm of rainfall on average.
Month
Max Temp
Min Temp
Avg Temp
Rain (mm)
Humidity
Wind (m/s)
Solar (kWh/m²)
Jan
83.1°F
71.8°F
77.5°F
62
77%
4.1
4.40
Feb
83.8°F
71.6°F
77.7°F
56
76%
4.2
5.00
Mar
85.3°F
71.6°F
78.4°F
62
74%
4.0
5.60
Apr
86.7°F
72.7°F
79.7°F
84
75%
3.8
6.00
May
87.1°F
74.8°F
81°F
136
78%
3.8
5.80
Jun
87.1°F
76.8°F
82°F
96
79%
4.1
5.90
Jul
87.6°F
77.5°F
82.6°F
105
79%
4.4
5.90
Aug
88.2°F
78.1°F
83.1°F
127
79%
4.1
5.90
Sep
88.3°F
77.9°F
83.1°F
159
80%
3.5
5.40
Oct
87.1°F
77°F
82°F
155
80%
3.3
4.90
Nov
85.3°F
74.8°F
80.1°F
141
81%
3.7
4.30
Dec
83.5°F
73°F
78.3°F
78
79%
4.1
4.10
📈 Puerto Rico Yearly Climate Trends
🌡️ Annual Temperature Trend
State-wide avg annual high & low · Last 10 years
📈 Puerto Rico Long-Term Climate Trends (1981–2025)
This chart shows how Puerto Rico's average temperatures have shifted across 45 years.
Use the range buttons to focus on recent decades or view the full historical record.
Data is averaged across all 12 cities in the state.
🌧️ Annual Precipitation Trend
State-wide avg annual precipitation · Last 10 years · mm/year
🔗 Explore Cities in Puerto Rico
Browse detailed weather history, monthly averages, and 45-year climate trends for every city in Puerto Rico.
Vega Baja is the wettest city in Puerto Rico with approximately 1317 mm of annual precipitation on average. View Vega Baja weather history →
What is the warmest month in Puerto Rico?▼
Sep is the warmest month across Puerto Rico, with state-wide average highs of 88.3°F and average lows of 77.9°F.
How many cities in Puerto Rico have weather data?▼
TownPillar has historical weather data for 12 cities in Puerto Rico, covering 45 years of NASA POWER climate records from 1981 to 2025.
Which month has the most sunshine in Puerto Rico?▼
Apr is the sunniest month across Puerto Rico with an average solar radiation of 6.00 kWh/m²/day state-wide. This solar radiation data from NASA POWER is useful for solar energy planning, agriculture, and understanding seasonal sunshine availability.
Where does this climate data come from?▼
All data is sourced from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis data. It includes monthly temperature, precipitation, humidity, wind speed, and solar radiation at 0.5° × 0.625° spatial resolution.
📚 Data Source
All weather data is sourced from NASA POWER (Prediction of Worldwide Energy Resources). Data covers 45 years (1981–2025) across 12 cities in Puerto Rico at monthly temporal resolution.