Islita Temperature by Month
Islita in Guanacaste, Costa Rica enjoys a stable climate, with daytime temperatures staying close to 30°C (86°F) throughout the year. Explore the full monthly breakdown below.
Islita Monthly Temperatures
In Islita temperatures are generally consistent throughout the year. Maximum daytime temperatures range from a comfortable 29°C (84°F) in December to a very warm 32°C (90°F) in March. Nighttime lows range from 25°C (77°F) in March to 24°C (75°F) in December.
The chart below illustrates the average maximum day and minimum night temperatures in Islita by month:
Low temperatures are most often recorded between 4 AM and 6 AM, while highs typically occur around 3 PM. March, the city's warmest month, sees 282 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Islita 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
pleasant
moderate
cold
very cold
Islita vs World: Temperature Compared
Islita'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:
Barcelona, Spain has an annual average of around 21°C (70°F), with warm summers and mild, fairly short winters.
Reykjavík, Iceland averages 9°C (48°F) a year — mild summers by Icelandic standards, but cold winters and frequent wind.
Shanghai, China averages 21°C (70°F) a year, with warm summers, mild winters, and a noticeable spring and autumn.
Melbourne, Australia averages 20°C (68°F) annually — known for unpredictable weather, with four seasons sometimes happening in one day.
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 Islita's weather — including monthly rainfall, sunshine hours, and humidity — visit our Islita climate page.
