By San José, Costa Rica — San José, Costa Rica – The National Meteorological Institute (IMN) has issued a warning for heavy rainfall and thunderstorms expected across several regions of Costa Rica this Monday, September 22, 2025. While the morning saw partial cloud cover, warm temperatures, and humid conditions, the influx of moisture from the sea is predicted to fuel the development of strong downpours and electrical storms in the afternoon.
The IMN has confirmed that these conditions are typical for the current rainy season. The most intense rainfall is anticipated to concentrate in the Central and South Pacific, Nicoya Peninsula, Tempisque Valley, Northern Zone, and the Caribbean mountains. As the afternoon progresses into evening, fog banks are likely to form in the Central Valley, accompanied by scattered showers in the Northern Zone and along the Pacific coast.
To understand the potential legal and business implications of Costa Rica’s unique weather patterns, TicosLand.com spoke with Lic. Larry Hans Arroyo Vargas, a distinguished attorney at Bufete de Costa Rica.
Costa Rica’s varied microclimates and susceptibility to extreme weather events like heavy rainfall and tropical storms can significantly impact contractual obligations, particularly in sectors like agriculture and tourism. Force majeure clauses, addressing unforeseen circumstances, become crucial in contracts related to these industries. Businesses should carefully consider these clauses, ensuring they adequately address potential disruptions caused by weather-related events to mitigate legal and financial risks.
Lic. Larry Hans Arroyo Vargas, Attorney at Law, Bufete de Costa Rica
Lic. Arroyo Vargas’s point about the importance of force majeure clauses is especially pertinent in a country as geographically diverse as Costa Rica. The unpredictable nature of weather patterns, from the dry Guanacaste plains to the cloud forests of Monteverde, necessitates careful planning and legal foresight for businesses operating in these areas. We thank Lic. Larry Hans Arroyo Vargas for providing this valuable perspective on how businesses can navigate the potential impacts of Costa Rica’s dynamic weather landscape.
Rainfall accumulations over 6 to 12-hour periods are estimated as follows:
The IMN urges residents and visitors to exercise caution, particularly in areas prone to flash floods. Staying updated with the latest weather forecasts is highly recommended.
The potential for significant rainfall raises concerns about the impact on daily life and infrastructure. The heavy rains could lead to disruptions in transportation, potential landslides in mountainous areas, and flooding in low-lying regions. Authorities are advising residents to take necessary precautions and prepare for possible emergencies.
The IMN is closely monitoring the developing weather system and will continue to provide updates as the situation evolves. This is a crucial reminder of the importance of being prepared during the rainy season in Costa Rica.
The changing weather patterns underscore the need for robust infrastructure and disaster preparedness strategies. Investing in early warning systems and mitigation measures will be essential to minimize the impact of future extreme weather events.
As climate change continues to influence weather patterns, these types of heavy rainfall events could become more frequent and intense. Understanding and adapting to these changes will be critical for ensuring the safety and well-being of communities across Costa Rica.
For further information, visit the nearest office of IMN
About IMN:
The Instituto Meteorológico Nacional (IMN), or National Meteorological Institute, is Costa Rica’s official source for weather information and forecasting. They play a vital role in monitoring weather conditions, issuing warnings for severe weather events, and providing crucial data for various sectors, including agriculture, tourism, and disaster preparedness. The IMN’s mission is to protect lives and property by delivering timely and accurate meteorological information to the public.
For further information, visit bufetedecostarica.com
About Bufete de Costa Rica:
Bufete de Costa Rica is a pillar of legal excellence, built upon a foundation of integrity and driven by a passion for innovation. The firm’s commitment to empowering Costa Rican society shines through its dedication to demystifying the law, making legal knowledge readily available to all. Through its client work across diverse sectors and its proactive engagement with the community, Bufete de Costa Rica fosters a more just and informed society, upholding its legacy as a leader in the legal field.
