Climate Overview
The climate in La Fortuna is warm and mild. The average annual temperature is 24°C and approximately 2510mm of precipitation falls per year. October is the wettest month, receiving around 399mm of rainfall. La Fortuna is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: April, May, September. The coldest months are January, February, March, when temperatures can drop to 20°C.
Temperature
La Fortuna has relatively stable temperatures year-round, staying within a 9°C range. The warmest month is April, when average highs reach 29°C and the mean temperature sits around 25°C. January is the coolest month, with minimum temperatures around 20°C and an average of 22°C. Daily temperature variation is modest, with an average difference of 6°C between highs and lows.
Precipitation
La Fortuna is a very wet location, receiving approximately 2510mm of precipitation annually, which averages out to around 209mm per month. The wettest month is October, averaging 399mm of rainfall. May and June also tend to see above-average precipitation. The driest month is March, with just 23mm. That's 376mm less than October, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.
Wind
La Fortuna is relatively calm, with an average annual wind speed of 2km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 4km/h, though still comfortable for most outdoor activities. The calmest conditions occur in September, with average winds dropping to 1km/h, making it an ideal period for wind-sensitive activities. Wind speeds vary significantly across the year, with a 3km/h difference between the calmest and windiest months. This level of variation is worth factoring into travel plans.
Seasons
92 days until Autumn
It is currently summer in La Fortuna, which began on June 21, 2026. La Fortuna is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in April at around 29°C, while the coldest stretch bottoms out in January near 20°C. Autumn is next, beginning on September 23, 2026 — 92 days from now.
Spring
Temperatures range from 20 to 29°C. Rainfall is heavy, totalling around 404mm across the season with a monthly average of 135mm. Winds are generally light, averaging 2km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 21 to 28°C. Rainfall is heavy, totalling around 778mm across the season with a monthly average of 259mm. Winds are generally light, averaging 2km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 21 to 28°C. Rainfall is heavy, totalling around 947mm across the season with a monthly average of 316mm. Winds are generally light, averaging 1km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 20 to 27°C. Rainfall is heavy, totalling around 381mm across the season with a monthly average of 127mm. Winds are generally light, averaging 3km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Best Time to Visit
The best time to visit La Fortuna is during February, March and April, when the weather is most comfortable for travellers. During these months, average temperatures hover around 24°C with modest rainfall averaging 42mm per month. By contrast, January can be quite cold with temperatures dropping to 20°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.
Monthly Climate Data
The table below shows monthly climate averages for La Fortuna based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.
