ClimateForecastSeptemberOctober >>

Alajuela weather in September

Planning a getaway to Alajuela this September and curious about the weather you should prepare for? Discover all the vital details you need on this page, solving your puzzle:

What is the weather like in Alajuela in September?

Alajuela is a region in Costa Rica. September in Alajuela generally has temperatures that range from warm to very warm, with heavy precipitation.

During the day temperatures vary from warm in Birrí at 25°C to very warm in Los Chiles at 31°C. At night it cools down to 23°C in Los Chiles and 17°C in Birrí.

In September, precipitation varies across different areas. From heavy rainfall in Playa el Jobo with an average of 262 mm to heavy rainfall in Atenas with 482 mm. Fortuna enjoys a balanced 159 hours of sunlight. Ensuring it's neither too overcast nor too sunny.

For a closer look at September's conditions in Alajuela, see the map below. For a more detailed look at Alajuela's yearly weather, check out our Alajuela climate page.

Where to go in Alajuela in September

Find the average weather conditions in September for the most popular destinations in Alajuela on the map below. Click on a destination dot for more detailed information.

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

Popular destinations in Alajuela

What is the weather like in September for the 5 most popular destinations in Alajuela?

Average weather in Fortuna

In September Fortuna generally has high temperatures with maximum daytime temperatures around 29°C, minimum nighttime temperatures around 21°C and heavy monthly rainfall. So on average the conditions are poor that month.

Fortuna
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
28°C 
21°C 
171 hours 
263 mm 
22 days 
poor 
29°C 
21°C 
159 hours 
308 mm 
23 days 
poor 
October   >> October
>>  
28°C 
21°C 
167 hours 
331 mm 
22 days 
poor 
Climate in Fortuna

Average weather in Alajuela

In September Alajuela generally has high temperatures with maximum daytime temperatures around 25°C, minimum nighttime temperatures around 17°C and heavy monthly rainfall. So on average the conditions are poor that month.

Alajuela
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
26°C 
17°C 
160 hours 
353 mm 
24 days 
poor 
25°C 
17°C 
149 hours 
433 mm 
24 days 
poor 
October   >> October
>>  
25°C 
17°C 
162 hours 
442 mm 
23 days 
poor 
Climate in Alajuela

Average weather in El Castillo de La Fortuna

In September El Castillo de La Fortuna generally has high temperatures with maximum daytime temperatures around 29°C, minimum nighttime temperatures around 21°C and heavy monthly rainfall. So on average the conditions are poor that month.

El Castillo de La Fortuna
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
28°C 
21°C 
171 hours 
254 mm 
23 days 
29°C 
21°C 
159 hours 
320 mm 
24 days 
poor 
October   >> October
>>  
28°C 
21°C 
167 hours 
336 mm 
23 days 
poor 
Climate in El Castillo de La Fortuna

Average weather in Bijagua

In September Bijagua generally has high temperatures with maximum daytime temperatures around 30°C, minimum nighttime temperatures around 22°C and heavy monthly rainfall. So on average the conditions are poor that month.

Bijagua
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
30°C 
22°C 
183 hours 
250 mm 
22 days 
poor 
30°C 
22°C 
158 hours 
298 mm 
24 days 
poor 
October   >> October
>>  
29°C 
22°C 
171 hours 
314 mm 
22 days 
poor 
Climate in Bijagua

Average weather in Atenas

In September Atenas generally has high temperatures with maximum daytime temperatures around 27°C, minimum nighttime temperatures around 19°C and heavy monthly rainfall. So on average the conditions are poor that month.

Atenas
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
27°C 
19°C 
158 hours 
420 mm 
23 days 
poor 
27°C 
19°C 
147 hours 
482 mm 
23 days 
poor 
October   >> October
>>  
26°C 
19°C 
161 hours 
497 mm 
22 days 
poor 
Climate in Atenas

Is your destination not in the list? Have a look at other destinations in Alajuela, in Costa Rica.

Is September the best time to visit Alajuela?

Given the typically poor weather conditions in Fortuna, September may not be the ideal time to visit Alajuela.

On average, the best time to visit Alajuela is in February and March with generally perfect weather in Fortuna. On the other hand, the weather in May, June, July, August, September, October and November tend to be poor.

Interested in more climate information?

We have much more information about the climate in Alajuela. Interested in the weather conditions in a specific month? Select the month below.

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  • Weather and climate has detailed information for every country in the world. Are you going to Costa Rica? Get detailed historical weather averages for many cities in Costa Rica.

    Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.