Ostional Temperature by Month

This graph shows the average minimum and maximum temperatures throughout the year in Ostional (Guanacaste), Costa Rica. The minimum temperature is often recorded between 4 AM and 6 AM, while the highest temperature is usually reached at 3 PM. During this time the sun's heating effect is the strongest.

Temperature patterns do vary with the seasons. In winter, the time of minimum and maximum temperatures can shift slightly compared to summer.

• On average, the temperatures are always high.
• On average, the warmest month is March with 32°C.
• On average, the coolest month is October with 29°C.
• The average annual maximum temperature is 30°C.
• The average annual minimum temperature is 25°C.