Guanacaste weather in September
Planning a getaway to Guanacaste 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 Guanacaste in September?
Guanacaste is a region in Costa Rica. September in Guanacaste generally has temperatures that range from warm to very warm, with heavy precipitation.
The average maximum daytime temperatures vary from warm in Puerto Coyote at 29°C to very warm in Nicoya at 31°C. Nighttime temperatures generally drop to 23°C in Nicoya and 25°C in Puerto Coyote. The temperatures cited for both day and night represent usual averages, but it's possible some days could be hotter. It's advisable to dress accordingly to handle the heat.
In September, precipitation varies across different areas. From heavy rainfall in Puerto Soley with an average of 277 mm to heavy rainfall in Sámara with 436 mm. Most areas experience a moderate amount of sunshine, with approximately 158 hours of sunlight expected in Tamarindo. This makes it neither too gloomy nor overly bright.
To learn more about the conditions in specific areas of Guanacaste in September, check out the map below. For more details on the yearly weather, visit our Guanacaste climate page.
Where to go in Guanacaste in September
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Popular destinations
What is the weather like in September for the 5 most popular destinations in Guanacaste?
Tamarindo
In September Tamarindo generally has very high temperatures with maximum daytime temperatures around 30°C, minimum nighttime temperatures around 25°C and heavy monthly rainfall. So on average the conditions are poor that month.
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Coco
In September Coco generally has high temperatures with maximum daytime temperatures around 30°C, minimum nighttime temperatures around 25°C and heavy monthly rainfall. So on average the conditions are poor that month.
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Sámara
In September Sámara generally has high temperatures with maximum daytime temperatures around 29°C, minimum nighttime temperatures around 24°C and heavy monthly rainfall. So on average the conditions are poor that month.
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Playa Flamingo
In September Playa Flamingo generally has high temperatures with maximum daytime temperatures around 30°C, minimum nighttime temperatures around 25°C and heavy monthly rainfall. So on average the conditions are poor that month.
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Playa Grande
In September Playa Grande generally has very high temperatures with maximum daytime temperatures around 30°C, minimum nighttime temperatures around 25°C and heavy monthly rainfall. So on average the conditions are poor that month.
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Is your destination not in the list? Have a look at other destinations in Guanacaste, in Costa Rica.
Is September the best time to visit Guanacaste?
In our view, September might not be the best time to travel to Guanacaste with often poor weather in Tamarindo.
Generally speaking, January, February, March and December provide perfect weather in Tamarindo. In contrast, May, June, August, September and October tend to have poor weather conditions.
Interested in more climate information?
We have much more information about the climate in Guanacaste.
Interested in the weather conditions in a specific month? Select the month below.
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.