Nicoya Peninsula Weather in September

Average temperatures, rainfall, sunshine and the best places to visit in the Nicoya Peninsula, Costa Rica in September.

Planning a journey to the Nicoya Peninsula, Costa Rica this September and curious over the weather conditions to await? Your essential details are found on this page, answering your query:

What to Expect in the Nicoya Peninsula in September

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

Temperatures

The average maximum daytime temperatures vary from warm in Cóbano at 29°C (84°F) to very warm in Nicoya at 31°C (88°F). Nighttime temperatures generally drop to 23°C (73°F) in Nicoya and 25°C (77°F) in Cóbano. While the given temperatures for day and night are typical, there may be days that feel warmer. Make sure you're dressed in a way that keeps you cool and comfortable.

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

Precipitation

In September, precipitation varies across different areas. From heavy rainfall in Tamarindo with an average of 331 mm (13 in) to heavy rainfall in Sámara with 436 mm (17 in).

Average sunshine

Most areas see decent amounts of sunshine this month. Tamarindo gets around 158 hours of sunlight, providing a pleasant balance of sun and clouds. If you'd prefer more guaranteed sunshine, our weather planner can show you sunnier spots around the world.

Explore the Nicoya Peninsula by month

Best Places to Visit in the Nicoya Peninsula in September

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

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 the Nicoya Peninsula

What is the weather like in September for some of the most popular destinations in the Nicoya Peninsula, Costa Rica?

Temperature range in the Nicoya Peninsula (September)

Precipitation variation in the Nicoya Peninsula (September)

Tamarindo

In September Tamarindo generally has very high temperatures with maximum daytime temperatures around 30°C (86°F), minimum nighttime temperatures around 25°C (77°F) and heavy monthly rainfall. So on average the conditions are poor that month.

August
September
October
Max temperature
31°C (88°F)
30°C (86°F)
30°C (86°F)
Min temperature
25°C (77°F)
25°C (77°F)
25°C (77°F)
Monthly sun hours
183 hours
158 hours
171 hours
Monthly rainfall
250 mm (9.8 in)
331 mm (13 in)
354 mm (14 in)
Monthly rainy days
21 days
23 days
21 days
Weather conditions

Sámara

In September Sámara 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
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 rainfall
382 mm (15 in)
436 mm (17 in)
469 mm (18 in)
Monthly rainy days
21 days
23 days
21 days
Weather conditions

Nosara

In September Nosara 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
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 rainfall
372 mm (15 in)
433 mm (17 in)
463 mm (18 in)
Monthly rainy days
21 days
23 days
21 days
Weather conditions

Cóbano

In September Cóbano generally has high temperatures with maximum daytime temperatures around 29°C (84°F), minimum nighttime temperatures around 25°C (77°F) and heavy monthly rainfall. So on average the conditions are poor that month.

August
September
October
Max temperature
29°C (84°F)
29°C (84°F)
28°C (82°F)
Min temperature
25°C (77°F)
25°C (77°F)
25°C (77°F)
Monthly sun hours
171 hours
159 hours
167 hours
Monthly rainfall
358 mm (14 in)
380 mm (15 in)
437 mm (17 in)
Monthly rainy days
21 days
23 days
21 days
Weather conditions

Nicoya

In September Nicoya generally has very high temperatures with maximum daytime temperatures around 31°C (88°F), minimum nighttime temperatures around 23°C (73°F) and heavy monthly rainfall. So on average the conditions are poor that month.

August
September
October
Max temperature
32°C (90°F)
31°C (88°F)
31°C (88°F)
Min temperature
23°C (73°F)
23°C (73°F)
23°C (73°F)
Monthly sun hours
183 hours
158 hours
171 hours
Monthly rainfall
315 mm (12 in)
406 mm (16 in)
418 mm (16 in)
Monthly rainy days
22 days
23 days
21 days
Weather conditions

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

Popular cities in September

Day & night temperatures, rainfall and average weather in the Nicoya Peninsula in September.

City Weather Day temp Night temp Rainfall
Tamarindo 30°C (86°F) 25°C (77°F) 331 mm (13 in)
Sámara 29°C (84°F) 24°C (75°F) 436 mm (17 in)
Nosara 29°C (84°F) 24°C (75°F) 433 mm (17 in)
Cóbano 29°C (84°F) 25°C (77°F) 380 mm (15 in)
Nicoya 31°C (88°F) 23°C (73°F) 406 mm (16 in)

The Nicoya Peninsula weather in September: frequently asked questions

What is the weather like in the Nicoya Peninsula, Costa Rica in September?

In September, the Nicoya Peninsula, Costa Rica generally has poor weather conditions. Tamarindo sees daytime temperatures near 30°C (86°F), with nights cooling to roughly 25°C (77°F).

What is the average temperature in the Nicoya Peninsula, Costa Rica in September?

In Tamarindo, the average daytime high in September is 30°C (86°F), while nighttime temperatures drop to around 25°C (77°F).

Does the Nicoya Peninsula, Costa Rica get a lot of rain in September?

Yes. September brings heavy rainfall to the Nicoya Peninsula, Costa Rica, with Tamarindo averaging around 331 mm (13 in). Expect frequent showers and pack accordingly.

Is September a Good Time to Visit the Nicoya Peninsula, Costa Rica?

In our opinion, September may not be the ideal time to visit the Nicoya Peninsula, Costa Rica due to the typically poor weather in Tamarindo.

Generally speaking, the best visiting conditions can be found in January and December offering mostly pleasant weather in Tamarindo. The weather in May, June, July, 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 the Nicoya Peninsula.

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.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.