Costa Rica is renowned for its distinct seasons, with the transition between the dry and rainy seasons marking a noticeable change in daily life, agriculture, and tourism. This year, however, the National Meteorological Institute (IMN) has announced that the rainy season will arrive earlier than anticipated. This shift brings with it various considerations for local communities, agriculture, and water resource management, as well as potential impacts on tourism.

Why Are We Seeing an Early Start?

According to the IMN, the early arrival of the rains is attributed to natural climate factors. Costa Rica is currently in a neutral climate phase, meaning neither El Niño nor La Niña are influencing weather patterns. This has allowed conditions to develop earlier than usual, bringing about the early start of the rainy season.

IMN director Werner Stolz notes that while this early shift is not unprecedented, it is essential to monitor these changes to understand their full impact on local climates and human activities.

When Will the Rains Begin?

The IMN has provided an estimate for when the rainy season will begin in various parts of the country:

• Southern Pacific: Expect rain between April 20 and April 25.
• Central Valley: Rain is expected between April 22 and May 1.
• Central Pacific: The rainy period will likely begin between April 25 and May 3.

These dates mark a one- to two-week advance over the typical schedule, highlighting the need for early preparation across the board.

What to Expect From the 2025 Rainy Season

The IMN has indicated that the 2025 rainy season will likely follow a “normal” pattern in terms of rainfall totals. This is positive news for agriculture, especially for crops that depend on a reliable water supply. However, it also presents challenges in managing water resources and mitigating potential flooding in at-risk areas.

For tourists, the early rains may affect outdoor activities, so flexibility in plans and awareness of weather forecasts will be essential. Adjusting your itinerary and being prepared for changes will allow you to make the most of your visit to Costa Rica, regardless of the weather.

The IMN’s Key Recommendations

In response to the early rainy season, the IMN has issued several key recommendations for the public:

• Stay Updated: Follow IMN bulletins and weather updates to stay informed about the latest developments.
• Prepare Your Home: Ensure that roofs, gutters, and drainage systems are checked and ready to handle heavy rainfall.
• Protect Water Resources: Safeguard your water reserves and avoid contamination from sediment runoff.
• Be Cautious on the Roads: Wet and slippery roads can be hazardous, so driving carefully is strongly advised.

By following these simple precautions, individuals and communities can reduce the risks associated with the rainy season and benefit from the ample rainfall.

Embracing the Changing Climate

The early onset of the rainy season serves as a reminder that Costa Rica’s climate is constantly evolving. While this shift presents certain challenges, it also presents an opportunity for everyone—from residents to visitors—to adapt and benefit from the changes. Whether you’re an agricultural producer or a tourist, being prepared for the early rains will help you enjoy all that Costa Rica has to offer, even during the rainy season.