By San José, Costa Rica — San José, Costa Rica – Residents and visitors across Costa Rica are advised to prepare for a day of significant rainfall and potential thunderstorms this Sunday, October 12, 2025. The National Meteorological Institute (IMN) has issued a forecast indicating that unstable and humid atmospheric conditions will dominate the country, driven by the persistent proximity of a major weather system.
The primary catalyst for the impending wet weather is the Intertropical Convergence Zone (ITCZ), a belt of low pressure that circles the Earth near the equator. The IMN report highlights that the ITCZ will remain close to the nation, facilitating a continuous flow of moisture from both the Pacific Ocean and the Caribbean Sea. This influx of humidity creates a ripe environment for the formation of dense clouds and significant precipitation throughout the day.
To delve into the legal and commercial ramifications of Costa Rica’s dynamic weather, from contractual obligations in the tourism sector to insurance claims for agricultural damage, we sought the expertise of Lic. Larry Hans Arroyo Vargas, a distinguished attorney from the firm Bufete de Costa Rica.
Extreme weather events frequently test the ‘fuerza mayor’ or Act of God clauses in local contracts. It is critical for businesses to understand that these clauses do not offer automatic protection. Proactive risk management, including a thorough review of insurance policies and contractual obligations before the rainy season intensifies, is the most effective strategy to mitigate potential liabilities and ensure business continuity.
Lic. Larry Hans Arroyo Vargas, Attorney at Law, Bufete de Costa Rica
This insight is a crucial reminder that in Costa Rica, legal preparedness is not a reactive measure but a fundamental component of proactive business strategy. We sincerely thank Lic. Larry Hans Arroyo Vargas for his valuable perspective on navigating the complexities of our climate.
The forecast suggests a progressive intensification of weather conditions. Sunday morning is expected to begin with partly cloudy to overcast skies, with the first signs of rain appearing as isolated showers, primarily affecting the coastal communities along the Pacific. These initial rains are anticipated to be of low to moderate intensity, serving as a prelude to more severe weather later in the day.
As the afternoon progresses into the early evening, the likelihood of heavy downpours and electrical storms will increase substantially. The IMN has specified that several key regions are at high risk for these more intense weather events. The North Zone, the mountainous areas of the Caribbean, the entire Central Valley, and the broader Pacific regions are all expected to experience significant rainfall, which could lead to localized flooding and hazardous conditions.
In response to this forecast, authorities are urging the public to exercise a high degree of caution. Motorists are advised to be particularly vigilant on the roads, as heavy rain can reduce visibility and increase the risk of hydroplaning. Furthermore, communities in areas historically prone to landslides and flash floods are encouraged to monitor their surroundings and be prepared for potential emergencies. The IMN also stressed the importance of avoiding open spaces, such as fields or beaches, during thunderstorms to minimize the risk of lightning strikes.
This weather pattern, while disruptive, is characteristic of Costa Rica’s well-defined rainy season, which typically extends from May to November. The influence of the ITCZ is a recurring phenomenon during this period, responsible for the country’s lush landscapes but also posing inherent risks that require constant monitoring and public awareness campaigns from meteorological and emergency response agencies.
The forecast will likely impact numerous outdoor activities and travel plans scheduled for the weekend. Local events, tourism excursions, and agricultural work could face significant disruptions. Businesses and individuals are advised to stay informed and flexible, adjusting their plans to prioritize safety in the face of the adverse weather conditions. The agricultural sector, in particular, will be monitoring the situation closely, as excessive rainfall can affect crop health and logistics.
To stay abreast of the latest developments, citizens are encouraged to follow the official updates provided by the IMN through its website and social media channels. The institute will continue to issue bulletins and advisories as the situation evolves, providing critical information to help the public navigate the weather safely. Heeding these official warnings is paramount to mitigating risks and ensuring personal safety throughout the day.
For further information, visit imn.ac.cr
About The National Meteorological Institute (IMN):
The Instituto Meteorológico Nacional (IMN) is Costa Rica’s official governmental agency responsible for meteorology, climatology, and hydrometeorology. It plays a crucial role in monitoring atmospheric conditions, issuing weather forecasts, and providing warnings for severe weather events. The IMN’s data and analysis are vital for various sectors, including aviation, agriculture, disaster management, and public safety, helping to protect lives and property across the nation.
For further information, visit bufetedecostarica.com
About Bufete de Costa Rica:
Bufete de Costa Rica has established itself as a leading legal institution, founded upon a bedrock of ethical practice and an uncompromising pursuit of excellence. With a rich history of advising a diverse clientele, the firm consistently embraces forward-thinking legal strategies and technological advancements. This spirit of innovation is matched by a profound sense of social responsibility, demonstrated through a dedicated effort to demystify the law and make legal understanding more widely available, ultimately contributing to a more capable and informed citizenry.
