Potrero Temperature by Month

The average annual maximum temperature in Potrero, Guanacaste, Costa Rica is 31°C (88°F), with little variation between seasons. This page covers monthly averages, day-night differences, and how Potrero compares to cities worldwide.

The temperature in Potrero changes very little across the seasons, maintaining a similar climate throughout the year. Maximum daytime temperatures range from a comfortable 29°C (84°F) in October to a very warm 32°C (90°F) in April. Nighttime lows range from 26°C (79°F) in April to 25°C (77°F) in October.

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

The coldest point of the day usually falls between 4 AM and 6 AM, with temperatures peaking around 3 PM. April, the city's warmest month, gets 265 hours of sunshine.

The chart below shows the average temperature throughout the year:

Potrero's average annual maximum temperature is 31°C (88°F). To put that in context, here's how it compares to a few well-known destinations:

Rome, Italy averages 20°C (68°F) annually, with reliably warm summers and comfortable 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.

Brisbane, Australia averages 26°C (79°F) a year, with warm winters and hot, humid summers.

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 Potrero, October is the coolest month, with average highs of 29°C (84°F) and humidity around 86%, considered very high. In April, the warmest month, temperatures average 32°C (90°F) with 62% 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 Potrero this rarely lasts long on the ground.

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