Guanacaste Weather in August

Average temperatures, rainfall, sunshine and the best places to visit in Guanacaste, Costa Rica in August.

Considering a trip to Guanacaste, Costa Rica this August and wondering about the expected weather conditions? Find all the crucial information you need right here, addressing your question:

What to Expect in Guanacaste in August

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

Temperatures

During the day temperatures vary from warm in Puerto Coyote at 29°C (84°F) to very warm in Nicoya at 32°C (90°F). At night it cools down to 23°C (73°F) in Nicoya and 25°C (77°F) 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.

To explore the conditions in Guanacaste, Costa Rica in more detail, check the map below.

Precipitation

In August, precipitation varies across different areas. From heavy rainfall in Puerto Soley with an average of 171 mm (6.7 in) to heavy rainfall in Sámara with 382 mm (15 in).

Average sunshine

Sunshine is fairly consistent across many areas. Tamarindo receives about 183 hours of sunlight in August, providing a good balance between sunny spells and cloud cover. If you're after more sunshine hours, take a look at our weather planner for other sun-rich destinations worldwide.

Explore Guanacaste by month

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

Best Places to Visit in Guanacaste in August

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

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 Guanacaste

What is the weather like in August for some of the most popular destinations in Guanacaste, Costa Rica?

Temperature range in Guanacaste (August)

Precipitation variation in Guanacaste (August)

Tamarindo

In August Tamarindo generally has very high temperatures with maximum daytime temperatures around 31°C (88°F), minimum nighttime temperatures around 25°C (77°F) and heavy monthly rainfall. So on average the conditions are poor that month.

July
August
September
Max temperature
31°C (88°F)
31°C (88°F)
30°C (86°F)
Min temperature
25°C (77°F)
25°C (77°F)
25°C (77°F)
Monthly sun hours
188 hours
183 hours
158 hours
Monthly rainfall
182 mm (7.2 in)
250 mm (9.8 in)
331 mm (13 in)
Monthly rainy days
20 days
21 days
23 days
Weather conditions

Coco

In August Coco generally has very high temperatures with maximum daytime temperatures around 31°C (88°F), minimum nighttime temperatures around 25°C (77°F) and heavy monthly rainfall. So on average the conditions are unpleasant that month.

July
August
September
Max temperature
31°C (88°F)
31°C (88°F)
30°C (86°F)
Min temperature
25°C (77°F)
25°C (77°F)
25°C (77°F)
Monthly sun hours
188 hours
183 hours
158 hours
Monthly rainfall
135 mm (5.3 in)
181 mm (7.1 in)
286 mm (11 in)
Monthly rainy days
20 days
21 days
23 days
Weather conditions

Playa Flamingo

In August Playa Flamingo generally has very high temperatures with maximum daytime temperatures around 31°C (88°F), minimum nighttime temperatures around 25°C (77°F) and heavy monthly rainfall. So on average the conditions are poor that month.

July
August
September
Max temperature
31°C (88°F)
31°C (88°F)
30°C (86°F)
Min temperature
25°C (77°F)
25°C (77°F)
25°C (77°F)
Monthly sun hours
188 hours
183 hours
158 hours
Monthly rainfall
151 mm (5.9 in)
206 mm (8.1 in)
296 mm (12 in)
Monthly rainy days
20 days
21 days
23 days
Weather conditions

Sámara

In August Sámara generally has high temperatures with maximum daytime temperatures around 30°C (86°F), minimum nighttime temperatures around 24°C (75°F) and heavy monthly rainfall. So on average the conditions are poor that month.

July
August
September
Max temperature
30°C (86°F)
30°C (86°F)
29°C (84°F)
Min temperature
24°C (75°F)
24°C (75°F)
24°C (75°F)
Monthly rainfall
329 mm (13 in)
382 mm (15 in)
436 mm (17 in)
Monthly rainy days
20 days
21 days
23 days
Weather conditions

Playa Grande

In August Playa Grande generally has very high temperatures with maximum daytime temperatures around 31°C (88°F), minimum nighttime temperatures around 25°C (77°F) and heavy monthly rainfall. So on average the conditions are poor that month.

July
August
September
Max temperature
31°C (88°F)
31°C (88°F)
30°C (86°F)
Min temperature
25°C (77°F)
25°C (77°F)
25°C (77°F)
Monthly sun hours
188 hours
183 hours
158 hours
Monthly rainfall
175 mm (6.9 in)
241 mm (9.5 in)
324 mm (13 in)
Monthly rainy days
20 days
21 days
23 days
Weather conditions

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

Popular cities in August

Day & night temperatures, rainfall and average weather in Guanacaste in August.

City Weather Day temp Night temp Rainfall
Tamarindo 31°C (88°F) 25°C (77°F) 250 mm (9.8 in)
Coco 31°C (88°F) 25°C (77°F) 181 mm (7.1 in)
Playa Flamingo 31°C (88°F) 25°C (77°F) 206 mm (8.1 in)
Sámara 30°C (86°F) 24°C (75°F) 382 mm (15 in)
Playa Grande 31°C (88°F) 25°C (77°F) 241 mm (9.5 in)
Nosara 30°C (86°F) 24°C (75°F) 372 mm (15 in)

Guanacaste weather in August: frequently asked questions

What is the weather like in Guanacaste, Costa Rica in August?

In August, Guanacaste, Costa Rica generally has poor weather conditions. Tamarindo sees daytime temperatures near 31°C (88°F), with nights cooling to roughly 25°C (77°F).

What is the average temperature in Guanacaste, Costa Rica in August?

In Tamarindo, the average daytime high in August is 31°C (88°F), while nighttime temperatures drop to around 25°C (77°F).

Does Guanacaste, Costa Rica get a lot of rain in August?

Yes. August brings heavy rainfall to Guanacaste, Costa Rica, with Tamarindo averaging around 250 mm (9.8 in). Expect frequent showers and pack accordingly.

Is August a Good Time to Visit Guanacaste, Costa Rica?

In our view, August might not be the best time to travel to Guanacaste, Costa Rica with often poor weather in Tamarindo.

On average, the best time to visit Guanacaste, Costa Rica is in January and December with generally pleasant weather in Tamarindo. On the other hand, the weather in May, June, July, August, September and October tend to be poor.

Interested in more climate information?

We have much more information about the climate in Guanacaste.

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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