Tortuguero, on Costa Rica’s northern Caribbean coast, has a tropical rainforest climate with high temperatures, humidity, and rainfall year-round. The region is lush, green, and perpetually humid, with only subtle seasonal variations. Despite frequent rain, Tortuguero’s warm weather and abundant wildlife make it a unique destination for nature lovers and adventure travelers in any season.
Tortuguero’s climate is distinctly tropical and humid, defined by consistently high temperatures and abundant rainfall throughout the year. Average daytime highs range from 28°C to 32°C, with the warmest period in April and September. Nights are warm, rarely dropping below 22°C, and humidity remains high year-round, often above 85%. Annual rainfall is exceptionally high, exceeding 5,000 mm in some years, making Tortuguero one of the wettest places in Costa Rica. Rain falls in all months, but the heaviest periods are typically July, November, and December, each with over 400 mm of precipitation. The driest months are March, April, September, and October, though even these months see regular showers. Sunshine averages 5–6 hours per day, with the longest days in June (up to 12.8 hours of daylight) and the shortest in December (about 11.5 hours).
There is no true dry season, but September and October are relatively drier and coincide with the peak of turtle nesting and hatching. Sea temperatures are warm year-round (28–29°C), ideal for swimming, though strong rip currents can make some beaches unsuitable. Winds are generally light to moderate (10–17 km/h), with breezier conditions during storms or in the wettest months. The lush rainforest, canals, and wildlife thrive in this perpetually wet environment, and sudden, intense showers are common – often followed by bursts of sunshine. The climate supports a rich biodiversity, with green sea turtles nesting from July to October and a vibrant array of flora and fauna visible year-round.
| Average climate data for Tortuguero, Costa Rica | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Average maximum temperature (°F) | 84 | 86 | 88 | 90 | 88 | 86 | 86 | 84 | 84 | 84 | 84 | 84 | 90 |
| Average minimum temperature (°F) | 74 | 73 | 75 | 75 | 75 | 73 | 75 | 73 | 73 | 74 | 72 | 71 | 71 |
| Average precipitation (inch) | 16 | 10 | 7 | 10 | 13 | 17 | 24 | 18 | 12 | 16 | 24 | 25 | 192 |
| Average rainfall days (days) | 12 | 9 | 7 | 9 | 17 | 22 | 22 | 22 | 22 | 22 | 18 | 17 | 199 |
| Average water temperature (°F) | 82 | 83 | 82 | 82 | 84 | 84 | 82 | 82 | 84 | 84 | 82 | 82 | 83 |
| Average daily daylight hours (h) | 11 | 11 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 12 |
| Average daily sunshine hours (h) | 5 | 6 | 6 | 6 | 6 | 6 | 5 | 5 | 6 | 5 | 5 | 6 | 6 |
| Average UV index | 11 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 10 | 12 |
The best time to visit Tortuguero is from April and September to October, when rainfall is lower, days are warm and sunny, and turtle nesting or hatching is at its peak. These months offer the best balance of comfortable weather and exceptional wildlife experiences, making them ideal for outdoor adventures and eco-tours.
The least favorable time to visit is during July, November, and December, when rainfall is at its highest and frequent heavy showers can disrupt outdoor plans. While wildlife viewing remains excellent, persistent rain and muddy trails may limit some activities and travel flexibility.
Tortuguero has a tropical rainforest climate with high temperatures (28–32°C), humidity, and rainfall all year. There is no true dry season, but September and October are relatively less rainy. The region is always lush and green.
April and September–October are the best months, offering the driest weather and peak turtle nesting or hatching. These periods are ideal for wildlife watching, boat tours, and exploring the rainforest with fewer rain disruptions.
Yes, Tortuguero is one of Costa Rica’s wettest regions, with over 5,000 mm of rain annually. Rain falls year-round, but is heaviest in July, November, and December. Even in the driest months, showers are common.
Daytime highs in Tortuguero average 28–32°C year-round, with the warmest months in April and September. Nights are warm (22–24°C), and humidity is consistently high, making the climate feel even hotter.
The sea is warm year-round (28–29°C), but strong rip currents and wildlife make some beaches unsafe for swimming. The area is better known for its rainforest, canals, and turtle nesting than for classic beach vacations.
Bring light, breathable clothing, a rain jacket, waterproof shoes, and quick-dry gear. Sun protection and insect repellent are essential. Even in drier months, expect sudden showers and muddy trails.
Green sea turtles nest from July to October, with hatching peaking in September and October. This is the most popular time for wildlife tours, so book accommodations and tours in advance if visiting during these months.
The warmest month, with the highest average maximum temperature, is April (89.7 °F). The month with the lowest average maximum temperature is December (84 °F). Overall, the average maximum temperature over the whole year is 85.7 °F.
The month with the highest average minimum temperature is March (75.2 °F). The coldest month, with the lowest average minimum temperature, is December (71.5 °F). Overall, the average minimum temperature over the whole year is 73.7 °F.
The month with the highest average water temperature is September (84.4 °F). The month with the lowest average water temperature is August (82.2 °F). Overall, the average water temperature over the whole year is 83 °F.
The wettest month, with the highest amount of precipitation, is December (24.5 inch). The driest month, with the least amount of precipitation, is March (6.9 inch). Over the whole year there are 191.7 inch of rainfall on average.
The month with the most days of rain is August (22.1 days). The month with the fewest days of rain is March (6.9 days). Over the whole year there are 199.2 days of rain on average.
The months with the longest days, so the most daylight, are May, June and July (Average daylight: 12.1 h). The month with the shortest days, so the least daylight, is December (Average daylight: 11 h). Over the whole year there are 11.6 h of daylight per day on average.
The month with the most sunshine per day is December (Average sunshine: 6.1 h). The month with the least sunshine per day is July (Average sunshine: 4.9 h). Over the whole year there are 5.6 h of sunlight per day on average.
The months with the highest average UV index are February, March, April, May, June, July, August, September and October (UV index: 12). The month with the lowest average UV index is December (UV index: 10). Over the whole year the average UV index is 11.7.
