Playa Hermosa Temperature by Month

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

With minimal seasonal shifts, Playa Hermosa experiences a constant climate year-round. Maximum daytime temperatures range from a very warm 33°C (91°F) in April to a comfortable 30°C (86°F) in October. At night, temperatures range from 25°C (77°F) in April to 24°C (75°F) in October.

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

The minimum temperature is often recorded between 4 AM and 6 AM, while the highest temperature is usually reached at 3 PM, when the sun's heating effect is strongest. April, the warmest month, gets 265 hours of sunshine.

The chart below shows the average temperature throughout the year:

Playa Hermosa'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:

Seville, Spain averages 23°C (73°F) a year, one of the warmer cities in Western Europe, with long hot summers.

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

San Francisco, USA averages 19°C (66°F) annually, but with little seasonal variation, summers are often cool and foggy, winters mild.

Melbourne, Australia averages 20°C (68°F) annually, known for unpredictable weather, with four seasons sometimes happening in one day.

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 Hermosa, 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.

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 Playa Hermosa's weather, including monthly rainfall, sunshine hours, and humidity, visit our Playa Hermosa climate page.