Guanacaste weather in December

Are you planning a trip to Guanacaste in December and wondering what kind of weather to expect? This page has all the details you need.

What is the weather like in Guanacaste in December?

Guanacaste is a region in Costa Rica. December in Guanacaste generally has temperatures that range from warm to very warm, with precipitation levels ranging from low to high.

During the day temperatures vary from warm in Nuevo Arenal at 28°C to very warm in Nicoya at 32°C. At night it cools down to 22°C in Nicoya and 20°C in Nuevo Arenal. 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 December, precipitation varies across different areas. From low rainfall in Ocotal with an average of 12 mm to high rainfall in Nuevo Arenal with 147 mm. The days are mostly sunny, with an average total of around 258 hours of sunshine in Tamarindo. The sunlight during this month doesn't just make the days brighter, it also seems to make everyone a bit more cheerful.

For specific regional insights in Guanacaste for December, refer to the map provided below. For an in-depth overview of the yearly weather conditions, do visit our Guanacaste climate page.

Where to go in Guanacaste in December

Find the average weather conditions in December for the most popular destinations in Guanacaste 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 Guanacaste

What is the weather like in December for the 5 most popular destinations in Guanacaste?

Average weather in Tamarindo

In December Tamarindo generally has very high temperatures with maximum daytime temperatures around 31°C, minimum nighttime temperatures around 24°C and low monthly rainfall. So on average the conditions are perfect that month.

Tamarindo
Max temperature Max temp
Min temperature Min temp
Monthly sun hours Sun hours
Monthly rainfall Rainfall
Monthly rainy days Rainy days
Weather conditions Weather
30°C 
25°C 
206 hours 
118 mm 
12 days 
31°C 
24°C 
258 hours 
14 mm 
10 days 
January   >> January
>>  
32°C 
24°C 
295 hours 
4.2 mm 
7 days 
Climate in Tamarindo

Average weather in Coco

In December Coco generally has very high temperatures with maximum daytime temperatures around 30°C, minimum nighttime temperatures around 24°C and low monthly rainfall. So on average the conditions are perfect that month.

Coco
Max temperature Max temp
Min temperature Min temp
Monthly sun hours Sun hours
Monthly rainfall Rainfall
Monthly rainy days Rainy days
Weather conditions Weather
30°C 
24°C 
206 hours 
102 mm 
13 days 
30°C 
24°C 
258 hours 
12 mm 
10 days 
January   >> January
>>  
31°C 
24°C 
295 hours 
4 mm 
7 days 
Climate in Coco

Average weather in Playa Flamingo

In December Playa Flamingo generally has very high temperatures with maximum daytime temperatures around 31°C, minimum nighttime temperatures around 25°C and low monthly rainfall. So on average the conditions are perfect that month.

Playa Flamingo
Max temperature Max temp
Min temperature Min temp
Monthly sun hours Sun hours
Monthly rainfall Rainfall
Monthly rainy days Rainy days
Weather conditions Weather
30°C 
25°C 
206 hours 
108 mm 
12 days 
31°C 
25°C 
258 hours 
12 mm 
10 days 
January   >> January
>>  
31°C 
25°C 
295 hours 
4.1 mm 
7 days 
Climate in Playa Flamingo

Average weather in Sámara

In December Sámara generally has very high temperatures with maximum daytime temperatures around 30°C, minimum nighttime temperatures around 24°C and moderate monthly rainfall. So on average the conditions are pleasant that month.

Sámara
Max temperature Max temp
Min temperature Min temp
Monthly rainfall Rainfall
Monthly rainy days Rainy days
Weather conditions Weather
29°C 
24°C 
226 mm 
13 days 
30°C 
24°C 
49 mm 
11 days 
January   >> January
>>  
31°C 
24°C 
16 mm 
8 days 
Climate in Sámara

Average weather in Playa Grande

In December Playa Grande generally has very high temperatures with maximum daytime temperatures around 31°C, minimum nighttime temperatures around 25°C and low monthly rainfall. So on average the conditions are perfect that month.

Playa Grande
Max temperature Max temp
Min temperature Min temp
Monthly sun hours Sun hours
Monthly rainfall Rainfall
Monthly rainy days Rainy days
Weather conditions Weather
30°C 
25°C 
206 hours 
115 mm 
12 days 
31°C 
25°C 
258 hours 
14 mm 
10 days 
January   >> January
>>  
32°C 
24°C 
295 hours 
4.1 mm 
7 days 
Climate in Playa Grande

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

Is December the best time to visit Guanacaste?

We consider December to be one of the best times to travel to Guanacaste. Typically, the climate in Tamarindo is perfect. It's worth noting that weather conditions might differ depending on the location you visit.

Generally speaking, January, February, March and December provide perfect weather in Tamarindo. The weather in May, June, August, September and October, on the other hand, tends to be poor.

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.

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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.