Nicoya Temperature by Month
The average annual maximum temperature in Nicoya, Guanacaste, Costa Rica is 33°C (91°F), with little variation between seasons. This page covers monthly averages, day-night differences, and how Nicoya compares to cities worldwide.
Nicoya Monthly Temperatures
With minimal seasonal shifts, Nicoya experiences a constant climate year-round. Maximum daytime temperatures range from a very hot 36°C (97°F) in April to a very warm 31°C (88°F) in December. At night, temperatures range from 24°C (75°F) in April to 22°C (72°F) in December.
The chart below illustrates the average maximum day and minimum night temperatures in Nicoya by month:
Low temperatures are most often recorded between 4 AM and 6 AM, while highs typically occur around 3 PM. April, the city's warmest month, sees 265 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Nicoya vs Costa Rica
The map below shows the annual temperature across Costa Rica. You can also select individual months if you want to compare a specific time of year.
very warm
warm
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moderate
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Nicoya vs World: Temperature Compared
Nicoya's average annual maximum temperature is 33°C (91°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.
On the cooler end, Oslo, Norway averages just 10°C (50°F) annually, with pleasant summers but long, cold winters.
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.
What Does the Temperature Feel Like in Nicoya?
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 Nicoya, December is the coolest month, with average highs of 32°C (90°F) and humidity around 72% — considered high. In April, the warmest month, temperatures average 36°C (97°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.
Global average temperatures have risen by around 1.2°C since the pre-industrial era, and the effects are visible across many regions. Winters are milder on average, with fewer frost days and less snow in many parts of the world. Heatwaves are more frequent and more intense, and Europe's summers of 2018, 2019, and 2020 all set records.
Summers are also getting drier in some areas, while winter rainfall has increased in others. This contributies to higher river levels and more flooding. In many countries, spring arrives earlier and autumn lasts longer. It has knock-on effects for wildlife, agriculture, and local ecosystems.
For more on Nicoya's weather — including monthly rainfall, sunshine hours, and humidity — visit our Nicoya climate page.
