Weather in Costa Rica in December is a topic of great interest for tourists and locals alike, given the country’s unique geography and the trade winds that significantly influence its climate.
December falls within the dry season in Costa Rica, with the northeast trade winds bringing rain and cooler temperatures to the Pacific Coast, while the Central Valley experiences a cooler climate than other times of the year, and the Caribbean Coast stays relatively warm and sunny.
Weather Patterns in Costa Rica in December are Highly Influenced by the Trade Winds: Weather In Costa Rica In December
Weather in Costa Rica during December is characterized by mild temperatures, high sunshine hours, and moderate precipitation. One of the primary factors influencing these conditions are the trade winds, specifically the northeast trade winds.
The northeast trade winds bring warm, moist air from the Caribbean Sea towards the Pacific coast, resulting in a steady flow of precipitation across the country. This wind pattern plays a significant role in shaping Costa Rica’s climate in December, with potential consequences for sunshine hours, temperature, and precipitation.
Impact on Sunshine Hours
The northeast trade winds typically lead to an increase in precipitation, which may reduce the amount of sunshine hours in certain regions of Costa Rica. However, the overall effect on sunshine hours is relatively minimal, with most areas of the country still experiencing an average of 7-8 hours of direct sunlight per day in December.
Consequences for Temperature
The trade winds typically keep temperatures in check, preventing significant deviations from the average temperature range. In December, the average high temperature ranges from 77°F (25°C) in the northern regions to 83°F (28°C) near the equator. The low temperatures remain relatively mild, averaging between 64°F (18°C) and 72°F (22°C) across the country.
Potential Consequences for Precipitation
The northeast trade winds are a primary driver of precipitation in Costa Rica during December. As the warm, moist air from the Caribbean Sea moves towards the Pacific coast, it leads to increased cloud formation and precipitation. This can result in an average of 12-15 inches (30-38 cm) of rainfall across the country, with some areas experiencing more significant amounts. It’s worth noting that the precipitation patterns can vary significantly depending on the specific location within Costa Rica.
Real-Life Instances
There have been several instances where the northeast trade winds have significantly impacted the weather in Costa Rica during December. Some notable examples include:
- 2015: A strong episode of the northeast trade winds led to heavy precipitation and landslides in the northern regions of Costa Rica, resulting in significant damage and displacement.
- 2018: A prolonged period of northeast trade winds caused drought-like conditions in the southern regions of Costa Rica, leading to water shortages and agricultural damage.
- 2020: A series of heavy precipitation events linked to the northeast trade winds led to significant flooding in several urban areas, displacing over 1,000 people.
Regional Weather Conditions in Costa Rica in December such as Sunshine Hours

Costa Rica’s diverse geography and microclimates create varying weather conditions throughout the country. December is a great time to visit, with mild temperatures and plenty of sunshine. However, the amount of sunshine can vary depending on the region. In this section, we will explore the average sunshine hours in different regions of Costa Rica during December.
Average Sunshine Hours by Region
The amount of sunshine in Costa Rica can significantly impact the activities and plans of visitors. When choosing a destination in Costa Rica, understanding the average sunshine hours can help travelers make informed decisions about their itinerary. Here’s a comparison of sunshine hours in different regions of Costa Rica in December:
| Region | Average Sunshine Hours | Precipitation Days | Average High Temp |
| — | — | — | — |
| Pacific Coast | 7-9 hours/day | 9-10 days | 77-83°F (25-28°C) |
| Central Valley | 5-7 hours/day | 10-12 days | 72-78°F (22-25°C) |
| Caribbean Coast | 6-8 hours/day | 8-10 days | 75-80°F (24-27°C) |
The Pacific Coast receives the most sunshine hours, with an average of 7-9 hours per day. This region has fewer precipitation days, making it an ideal choice for beachgoers and outdoor enthusiasts. In contrast, the Central Valley receives fewer sunshine hours, but warmer temperatures prevail.
Impact of Sunshine Hours on Activities
The amount of sunshine hours in Costa Rica can greatly influence the types of activities and outdoor excursions one can enjoy. Here are some considerations:
* For beach lovers, destinations with high sunshine hours like the Pacific Coast offer ample opportunities to enjoy sunbathing, swimming, and surfing.
* Visitors to the Central Valley may prefer to take advantage of the region’s rich wildlife and cultural heritage by visiting coffee plantations, national parks, and colonial towns.
* Meanwhile, the Caribbean Coast offers a unique blend of tropical jungle and coastline opportunities for hiking, ziplining, and beachcombing.
Understanding the regional weather conditions in Costa Rica can help holidaymakers tailor their itinerary to make the most of their trip. Visitors can plan their activities according to the expected sunshine hours, precipitation, and temperature to ensure a memorable and enjoyable experience in this beautiful country.
Weather Disasters and Extreme Events in Costa Rica in December
Costa Rica, located in Central America, is prone to various weather-related disasters and extreme events, particularly during the month of December. This period is marked by the peak of the rainy season, and the country often experiences heavy rainfall, landslides, and floods. In this section, we will examine some of the most notable weather-related disasters and extreme events that have occurred in Costa Rica during the month of December in the past 10 years.
The Impact of Weather Disasters and Extreme Events on the Environment
Weather-related disasters and extreme events can have a significant impact on the environment in Costa Rica. Heavy rainfall and flooding can lead to soil erosion, landslides, and the loss of vegetation, affecting the country’s biodiversity and ecosystems. The impact can also be felt in the form of damage to infrastructure, including roads, bridges, and buildings.
The Impact of Weather Disasters and Extreme Events on Local Communities
Weather-related disasters and extreme events can have a devastating impact on local communities in Costa Rica. Heavy rainfall and flooding can lead to displacement, loss of livelihoods, and damage to homes and infrastructure. The impact can also be felt in the form of loss of crops, livestock, and other essential resources.
Notable Weather-Related Disasters and Extreme Events in Costa Rica in December, Weather in costa rica in december
Here are some of the most notable weather-related disasters and extreme events that have occurred in Costa Rica during the month of December in the past 10 years:
The Impact of Weather Disasters and Extreme Events on Tourists
Weather-related disasters and extreme events can also impact tourists in Costa Rica. Heavy rainfall and flooding can lead to road closures, disruptions to travel plans, and damage to tourist infrastructure. In some cases, the impact can be felt in the form of losses to tourist businesses and the national economy.
Weather-Related Travel Tips and Preparations for Visitors in Costa Rica in December

When visiting Costa Rica in December, it’s essential to be prepared for the unique weather conditions that come with the start of the dry season. The warm tropical climate, combined with the trade winds, can bring about heavy rainfall, strong winds, and even occasional heatwaves. To ensure a smooth and enjoyable trip, tourists should take necessary precautions and prepare themselves with the right gear.
Visitors to Costa Rica in December should be aware of the following essential preparations and precautions:
Packing Essential Items
Travelers visiting Costa Rica in December should focus on packing light, breathable clothing that can keep them cool in the hot sun and dry quickly in case of unexpected rain showers. A good rule of thumb is to choose clothing that is 100% natural fibers, such as cotton or linen. It’s also important to pack a light jacket or sweater for cooler evenings. Additionally, packing sunscreen, sunglasses, and a hat can help protect against the intense tropical sun.
Staying Informed about Weather Forecasts
Visitors to Costa Rica in December should stay up-to-date with local weather forecasts to anticipate potential weather conditions. This can be achieved by regularly checking government weather websites, such as the Costa Rican National Meteorological Institute, or downloading a weather app on a smartphone. It’s also a good idea to consult with local tour operators or hotel staff for insider information on the current weather situation.
Choosing Suitable Accommodations
When selecting accommodations in Costa Rica in December, it’s essential to choose a location that is safe from potential weather-related hazards. For example, staying in a beachfront hotel may be a good option for those who want to experience the coastal weather, but it may also increase the risk of flooding or strong winds. Similarly, staying in a hotel with a backup generator or a backup plan for potential power outages may be a good idea.
Traveling with the Right Attitude
Visitors to Costa Rica in December should be prepared for the possibility of unexpected weather conditions and adapt their travel plans accordingly. This may mean changing plans mid-trip or adjusting the pace of their activities. It’s essential to stay flexible and have an open-minded attitude, as the tropical weather can be unpredictable. Additionally, being respectful of local customs and traditions can help visitors navigate unexpected situations with confidence.
Packing Essential Items
Visitors to Costa Rica in December should consider packing the following essential items:
- Packing light, breathable clothing
- 100% natural fibers, such as cotton or linen
- A light jacket or sweater for cooler evenings
- Sunscreen, sunglasses, and a hat for sun protection
- Waterproof gear, such as a rain jacket or poncho
- A portable power bank to keep devices charged during potential power outages
Table of Tips
The following table summarizes essential weather-related travel tips for visitors to Costa Rica in December:
| Tip | Description | Precaution Level | Recommended Packing Items |
| — | — | — | — |
| Tip 1 | Pack light, breathable clothing | Low | Cotton, linen, etc. |
| Tip 2 | Stay informed about weather forecasts | Medium | Government weather websites, weather apps |
| Tip 3 | Choose suitable accommodations | High | Beachfront hotels, backup generators |
| Tip 4 | Travel with the right attitude | Medium | Flexibility, adaptability |
| Tip 5 | Pack essential items | Low | Sunscreen, sunglasses, hat, etc. |
| Tip 6 | Prepare for potential weather-related hazards | High | Waterproof gear, portable power banks, etc. |
Summary

In conclusion, weather in Costa Rica in December is characterized by a mix of rain and sunshine, depending on the region. Visitors should plan accordingly, packing layers and checking the forecast for the specific region they will be visiting.
FAQ Corner
What are the typical temperatures in different regions of Costa Rica in December?
The typical temperatures in different regions of Costa Rica in December range from 70°F to 85°F (21°C to 30°C), with the Pacific Coast being cooler and the Caribbean Coast being warmer.
How often does it rain in Costa Rica in December?
December is a relatively dry month in Costa Rica, with an average rainfall of 2-4 inches (50-100 mm) along the Pacific Coast and 4-6 inches (100-150 mm) in the Central Valley.
What are the most popular outdoor activities in Costa Rica in December?
Hiking, birdwatching, and wildlife spotting are popular outdoor activities in Costa Rica in December, but visitors should be prepared for cooler temperatures and potential rain showers.
Are there any potential hazards I should be aware of when traveling to Costa Rica in December?
Yes, Costa Rica is prone to hurricanes and flash flooding during the December months, especially in the Pacific Coast regions. Visitors should stay informed about weather forecasts and follow local advice.