San José Province Weather in September

Average temperatures, rainfall, sunshine and the best places to visit in San José Province, Costa Rica in September.

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San José Heredia Carrillo Santa Ana

Planning a trip to San José Province, Costa Rica this September? Here's what you need to know about the weather:

What to Expect in San José Province in September

San José Province, Costa Rica is a region in Costa Rica. September in San José Province generally has warm temperatures, with heavy precipitation.

Temperatures

The average maximum temperatures are warm and range from 23°C (73°F) in Santa María de Dota to 29°C (84°F) in Carrillo. Nighttime temperatures generally drop to 24°C (75°F) in Carrillo and 15°C (59°F) in Santa María de Dota.

For a closer look at conditions across San José Province, Costa Rica, refer to the map below.

Precipitation

In September, precipitation varies across different areas. From heavy rainfall in Puriscal with an average of 330 mm (13 in) to heavy rainfall in San Isidro with 655 mm (26 in).

Average sunshine

Sunshine amounts are decent in most places. San José gets approximately 149 hours of sunlight in September, offering a reasonable amount of both bright and cloudy periods. Curious about sunnier destinations? Our weather planner makes it easy to find places worldwide with pleasant weather.

Explore San José Province by month

Pick a month to see the average temperature, rainfall and sunshine in San José Province — and find the best time to visit. (based on San José)

January24°C (75°F) February24°C (75°F) March25°C (77°F) April26°C (79°F) May25°C (77°F) June25°C (77°F) This monthJuly24°C (75°F) August24°C (75°F) September24°C (75°F) October24°C (75°F) November24°C (75°F) December24°C (75°F)
Best Time to Visit San José Province →

Best Places to Visit in San José Province in September

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across San José Province.

Conditions Temperatures Precipitation
perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in San José Province

What is the weather like in September for some of the most popular destinations in San José Province, Costa Rica?

Temperature range in San José Province (September)

Precipitation variation in San José Province (September)

San José

In September San José generally has high temperatures with maximum daytime temperatures around 24°C (75°F), minimum nighttime temperatures around 16°C (61°F) and heavy monthly rainfall. So on average the conditions are poor that month.

« August
September
October »
August
September
October
Max temperature
24°C (75°F)
24°C (75°F)
24°C (75°F)
Min temperature
17°C (63°F)
16°C (61°F)
16°C (61°F)
Monthly sun hours
160 hours
149 hours
162 hours
Monthly rainfall
414 mm (16 in)
476 mm (19 in)
490 mm (19 in)
Monthly rainy days
24 days
24 days
23 days
Weather conditions
poor
poor
poor
Climate in San José →

Heredia

In September Heredia generally has high temperatures with maximum daytime temperatures around 25°C (77°F), minimum nighttime temperatures around 17°C (63°F) and heavy monthly rainfall. So on average the conditions are poor that month.

« August
September
October »
August
September
October
Max temperature
25°C (77°F)
25°C (77°F)
24°C (75°F)
Min temperature
17°C (63°F)
17°C (63°F)
17°C (63°F)
Monthly sun hours
160 hours
149 hours
162 hours
Monthly rainfall
355 mm (14 in)
426 mm (17 in)
443 mm (17 in)
Monthly rainy days
24 days
24 days
24 days
Weather conditions
poor
poor
poor
Climate in Heredia →

Carrillo

In September Carrillo generally has high temperatures with maximum daytime temperatures around 29°C (84°F), minimum nighttime temperatures around 24°C (75°F) and heavy monthly rainfall. So on average the conditions are poor that month.

« August
September
October »
August
September
October
Max temperature
30°C (86°F)
29°C (84°F)
29°C (84°F)
Min temperature
24°C (75°F)
24°C (75°F)
24°C (75°F)
Monthly sun hours
171 hours
159 hours
167 hours
Monthly rainfall
379 mm (15 in)
429 mm (17 in)
465 mm (18 in)
Monthly rainy days
21 days
23 days
21 days
Weather conditions
poor
poor
poor
Climate in Carrillo →

Santa Ana

In September Santa Ana generally has high temperatures with maximum daytime temperatures around 25°C (77°F), minimum nighttime temperatures around 17°C (63°F) and heavy monthly rainfall. So on average the conditions are poor that month.

« August
September
October »
August
September
October
Max temperature
25°C (77°F)
25°C (77°F)
25°C (77°F)
Min temperature
17°C (63°F)
17°C (63°F)
17°C (63°F)
Monthly sun hours
160 hours
149 hours
162 hours
Monthly rainfall
453 mm (18 in)
510 mm (20 in)
514 mm (20 in)
Monthly rainy days
23 days
24 days
23 days
Weather conditions
poor
poor
poor
Climate in Santa Ana →

San Gerardo de Dota

In September San Gerardo de Dota generally has high temperatures with maximum daytime temperatures around 24°C (75°F), minimum nighttime temperatures around 16°C (61°F) and heavy monthly rainfall. So on average the conditions are poor that month.

« August
September
October »
August
September
October
Max temperature
24°C (75°F)
24°C (75°F)
23°C (73°F)
Min temperature
16°C (61°F)
16°C (61°F)
16°C (61°F)
Monthly sun hours
152 hours
153 hours
155 hours
Monthly rainfall
506 mm (20 in)
564 mm (22 in)
624 mm (25 in)
Monthly rainy days
24 days
24 days
24 days
Weather conditions
poor
poor
poor
Climate in San Gerardo de Dota →

Is your destination not in the list? Have a look at all destinations in San José Province, in Costa Rica.

Popular cities in September

Day & night temperatures, rainfall and average weather in San José Province in September.

City Weather Day temp Night temp Rainfall
San José 24°C (75°F) 16°C (61°F) 476 mm (19 in)
Heredia 25°C (77°F) 17°C (63°F) 426 mm (17 in)
Carrillo 29°C (84°F) 24°C (75°F) 429 mm (17 in)
Santa Ana 25°C (77°F) 17°C (63°F) 510 mm (20 in)
San Gerardo de Dota 24°C (75°F) 16°C (61°F) 564 mm (22 in)
San Isidro 24°C (75°F) 17°C (63°F) 655 mm (26 in)

San José Province weather in September: frequently asked questions

What is the weather like in San José Province, Costa Rica in September?

Expect poor weather across San José Province, Costa Rica in September. The popular destination of San José averages 24°C (75°F) by day and 16°C (61°F) at night during this month.

What is the average temperature in San José Province, Costa Rica in September?

In San José, the average daytime high in September is 24°C (75°F), while nighttime temperatures drop to around 16°C (61°F).

Does San José Province, Costa Rica get a lot of rain in September?

Rainfall in San José Province, Costa Rica peaks during September. San José averages roughly 476 mm (19 in), so frequent and sometimes heavy showers are the norm.

Is September a Good Time to Visit San José Province, Costa Rica?

Given the typically poor weather conditions in San José, September may not be the ideal time to visit San José Province, Costa Rica.

Generally speaking, the best visiting conditions can be found in January, February and March offering mostly perfect weather in San José. 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 San José Province.

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 travel conditions. Find out where to go with our weather planner.

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