Carolina Temperature by Month

The average annual maximum temperature in Carolina, North Puerto Rico, Puerto Rico is 30°C (86°F), with little variation between seasons. This page covers monthly averages, day-night differences, and how Carolina compares to cities worldwide.

The temperature in Carolina changes very little across the seasons, maintaining a similar climate throughout the year. Maximum daytime temperatures range from a comfortable 28°C (82°F) in January to a very warm 31°C (88°F) in August. Nighttime lows range from 25°C (77°F) in August to 22°C (72°F) in January.

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

Temperatures tend to bottom out between 4 AM and 6 AM, then climb to their daily peak around 3 PM. August, the warmest month, sees 267 hours of sunshine.

The chart below shows the average temperature throughout the year:

Carolina's average annual maximum temperature is 30°C (86°F). To put that in context, here's how it compares to a few well-known destinations:

Lisbon, Portugal averages 21°C (70°F) annually, warm summers, mild winters, and rain mainly in the cooler months.

Toronto, Canada averages 13°C (55°F) annually, with cold snowy winters balanced by genuinely warm summers.

Buenos Aires, Argentina averages 23°C (73°F) a year, with hot summers and mild winters, and seasons reversed compared to Europe.

Tokyo, Japan averages 21°C (70°F) a year, with hot summers, cool winters, and a well-defined cherry blossom spring.

Temperature alone doesn't tell the whole story, humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.

In Carolina, January is the coolest month, with average highs of 28°C (82°F) and humidity around 74%, considered high. In August, the warmest month, temperatures average 31°C (88°F) with 76% humidity, conditions that feel high. For a full picture, see our humidity page.

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.

Seasonal temperature shifts influence more than just how warm it feels, they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.

Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Carolina this rarely lasts long on the ground.

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