Fortuna Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Fortuna.
Climate overview of Fortuna
With consistently stable weather, Fortuna, Alajuela, Costa Rica, sees little seasonal temperature change. Daytime highs average 30°C (86°F), ranging from 32°C (90°F) in April to 29°C (84°F) in December.
The city has a wet climate, receiving around 1974 mm (78 in) of rainfall per year. Despite the high annual total, it has distinct dry (February to March) and wet (May to October) seasons. October is the wettest month. The most sunshine falls in March, with an average of 10.2 hours of daily sunshine.
Fortuna Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Fortuna - and find the best time to visit.
Monthly Temperature in Fortuna
The climate in Fortuna remains fairly constant, offering comfortable temperatures throughout the year. On average, daytime temperatures range from a very warm 32°C (90°F) in April to a comfortable 29°C (84°F) in December.
Nighttime temperatures range from 22°C (72°F) in April to 21°C (70°F) in December.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Fortuna
Fortuna is known for its substantial rainfall, with annual precipitation reaching 1974 mm (78 in). The seasons in Fortuna bring significant changes in precipitation. The wettest month, October, receives heavy rainfall, with an average of 328 mm (13 in) of precipitation. This rainfall is distributed across 22 rainy days.
In contrast, the driest month, March, experiences much less rainfall, totaling 25 mm (1 in) over 6 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Fortuna Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Fortuna
In Fortuna, summer days are longer and more sunny, with daily sunshine hours peaking at 10.2 hours in March. As the darker season arrives, the brightness of the sun becomes less. September sees a soft sun for only 5.3 hours per average day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Humidity in Fortuna by Month
The relative humidity is high throughout the year in Fortuna.
The city experiences its highest humidity in September, reaching 86%. In March, the humidity drops to its lowest level at 60%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Fortuna
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: January, February and December
- Warmest weather: March, April and May
- Most sunshine: January and March
- Fewest rainy days: February, March and April
- Wettest months: May, June, July, August, September and October, when rainfall is highest.
- Seasonal pattern: Distinct dry (February to March) and wet (May to October) seasons
Frequently asked questions about the climate in Fortuna
What is the best time to visit Fortuna?
January, February and December typically offer the most optimal weather in Fortuna. In contrast, May, June, July, August, September and October tend to have less optimal conditions. Fortuna has distinct dry (February to March) and wet (May to October) seasons.
What temperatures can I expect in Fortuna?
Daytime highs range from 29°C (84°F) in December to 32°C (90°F) in April. Nighttime lows range from 21°C (70°F) to 22°C (72°F). Temperatures stay relatively stable year-round.
How much rain does Fortuna get?
Annual rainfall is around 1974 mm (78 in). October is the wettest month with 328 mm (13 in), while March is the driest with 25 mm (1 in).
How sunny is Fortuna?
Fortuna receives around 2,675 hours of sunshine per year. March is the sunniest month with 305 hours, while September is the cloudiest with just 158 hours. Overall, Fortuna enjoys abundant sunshine.
Fortuna 3-Day Forecast
Fortuna 3-Day Forecast
Fortuna on the map
Fortuna is highlighted - select any city to see its climate.
Popular this month
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Tamarindo
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