Playa Flamingo Temperature by Month

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

With little seasonal fluctuation, Playa Flamingo offers a predictable and steady climate. Maximum daytime temperatures reach a very warm 33°C (91°F) in April and a comfortable 30°C (86°F) in October. At night, lows range from 26°C (79°F) to 25°C (77°F) throughout the year.

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

Daily lows are most common between 4 AM and 6 AM. By 3 PM temperatures reach their daily high, driven by peak solar heating. April, the warmest month of the year, receives 265 hours of sunshine.

The chart below shows the average temperature throughout the year:

Playa Flamingo'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:

Athens, Greece sits at 23°C (73°F) on average, with hot dry summers and mild winters characteristic of the Mediterranean.

Interlaken, Switzerland averages 8°C (46°F) a year, with cold winters and cool summers thanks to its Alpine setting.

Shanghai, China averages 21°C (70°F) a year, with warm summers, mild winters, and a noticeable spring and autumn.

Perth, Australia averages 25°C (77°F) annually, with a classic Mediterranean climate, hot dry summers and mild wet winters.

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 Playa Flamingo, October is the coolest month, with average highs of 30°C (86°F) and humidity around 86%, considered very high. In April, the warmest month, temperatures average 33°C (91°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 Playa Flamingo this rarely lasts long on the ground.

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