Puerto Rico Temperature by Month

Puerto Rico, Misiones, Argentina has an average annual maximum temperature of 28°C (82°F), with moderate seasonal shifts ranging from 22°C (72°F) in July to 33°C (91°F) in January. Below you'll find a full monthly breakdown and a comparison with cities worldwide.

The climate in Puerto Rico experiences moderate temperature changes, with mild shifts between seasons. At night, temperatures range from 21°C (70°F) in January to 11°C (52°F) in July.

The chart below illustrates the average maximum day and minimum night temperatures in Puerto Rico by month:

From around 4 AM to 6 AM temperatures are at their lowest; by 3 PM they've climbed to their daily peak.

The chart below shows the average temperature throughout the year:

Puerto Rico's average annual maximum temperature is 28°C (82°F). To put that in context, here's how it compares to a few well-known destinations:

Barcelona, Spain has an annual average of around 21°C (70°F), with warm summers and mild, fairly short winters.

Reykjavík, Iceland averages 9°C (48°F) a year, mild summers by Icelandic standards, but cold winters and frequent wind.

New York City, USA averages 17°C (63°F) a year, with hot humid summers and cold winters that bring regular snowfall.

Adelaide, Australia averages 21°C (70°F) a year, with warm summers, mild winters, and relatively low rainfall year-round.

Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.

The readings come from a range of sources, land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.

Whether a city sits on the coast or deep inland makes a significant difference to its climate. Coastal areas tend to have more stable temperatures year-round, large bodies of water absorb heat slowly in summer and release it gradually in winter, keeping extremes in check. Cities far from the sea don't benefit from that buffer, which is why continental climates tend to have hotter summers and colder winters than their coastal counterparts at the same latitude.

For more on Puerto Rico's weather, including monthly rainfall, sunshine hours, and humidity, visit our Puerto Rico climate page.