Do hurricanes hit Costa Rica? Storms, wind and building a safe home

Rarely. Hurricane Otto in November 2016 is the only known hurricane to move over Costa Rica (NOAA National Hurricane Center), and the national weather service, the IMN, calls it the first hurricane with a direct impact in records going back to 1851. The regular risk is indirect: storms in the Caribbean and nearby Pacific pull days of heavy rain over the country, and that rain causes floods and landslides. A safe home here is designed for wind under the CFIA guidelines, but it is sited and drained for water first.

This guide covers how often storms reach Costa Rica, what Otto showed, why distant storms flood the Pacific side, how El Niño and La Niña change the odds, and what all of that means for choosing a lot and designing a house: wind zones, roof uplift, drainage and flood zones.

How often do hurricanes hit Costa Rica?

Costa Rica sits at the southern edge of the Atlantic hurricane belt. The official Atlantic season runs from June 1 to November 30, and the climatological average is 14 tropical cyclones a season (El Observador, April 2026). Very few of them come this far south. NOAA's report on Otto notes that its landfall was the southernmost hurricane landfall recorded in Central America.

Before Otto, the systems that reached Costa Rica directly were weaker: a tropical storm that entered through Tortuguero on December 12, 1887, and a tropical depression that came ashore near Barra del Colorado on November 18, 1973 (IMN, Otto report). Since Otto, Tropical Storm Bonnie made landfall on the Costa Rica and Nicaragua border on July 1, 2022, with sustained winds of 85 km/h, and the warning covered both Limón and Cabo Blanco on the Pacific side (Delfino, citing the US National Hurricane Center).

Most of the damage in Costa Rica's storm history came from storms that never made landfall here. The table below uses press tallies; figures for older storms vary between sources, so treat them as an order of magnitude.

What happened during Hurricane Otto in 2016?

According to the IMN's report, Otto made landfall in southern Nicaragua at about 11:15 am on November 24, 2016, after aircraft measured sustained winds of 155 km/h. It entered Costa Rica at about 2:00 pm near Las Delicias in Los Chiles and left at about 10:30 pm through Playa Naranjo on the Gulf of Papagayo as a tropical storm. It crossed 135 km of the country in about 8.5 hours. The IMN gives peak winds of 175 km/h with gusts of 213 km/h and classes the landfall as category 2; NOAA's post-storm analysis puts it at 100 knots, category 3.

The wind was not what did most of the harm. NOAA attributes the 10 deaths in Costa Rica mainly to flash floods and landslides in the north and northwest, and records 11.77 inches (about 300 mm) of rain in one day near Miravalles volcano. The IMN lists 250 to 300 mm at stations in La Cruz, Upala and Bagaces, landslides in Upala, Bagaces and Bijagua, seven damaged bridges and 2,778 km of affected roads (CONAVI figure).

For anyone building, that is the lesson: a well-built house can ride out the wind, but the creek next to it, the slope above it and the only road to it decide how it fares in a storm.

Why storms in the Caribbean flood the Pacific side

A hurricane passing north of Costa Rica in the Caribbean pulls air toward its centre. Over Costa Rica, that often means moist air dragged in from the Pacific, which rises over the mountains and falls as days of steady rain, a temporal. During Melissa in October 2025, the IMN warned that the wind pattern would bring a continuous flow of moisture from the Pacific, with prolonged rain in the Central and South Pacific, the North Pacific, the Nicoya Peninsula and the northwest of the Central Valley, on watersheds that were already saturated (El Observador, October 2025).

The same thing happened before Otto arrived. The IMN recorded about 700 mm of rain in the South Pacific between November 16 and 23, 2016, mostly from the system's indirect effects, including up to 300 mm in 24 hours in Golfito, Osa and Corredores. In 2007, Hurricane Noel brought a strong temporal to the Pacific slope (IMN, November 2007 bulletin).

Systems on the Pacific side matter too. Storms that cross Central America from the Caribbean into the Pacific, as Joan did in 1988, César in 1996 and Otto in 2016 (IMN), keep raining on the way out. The most common effects of that indirect influence are more rain, saturated soils, long storms, rivers bursting their banks and landslides (El Observador, April 2026).

So on the Pacific coast, where many foreign buyers build, the storm risk is mostly a rain risk, and it peaks in September and October, the wettest months on the Pacific slope (IMN). Our guide to building in the rainy season in Costa Rica has the regional dates.

El Niño, La Niña and storm years

The El Niño Southern Oscillation shifts the odds from one year to the next. NOAA explains that El Niño strengthens the vertical wind shear over the Atlantic, which tears developing storms apart and suppresses the hurricane season, while it favours more activity in the eastern Pacific. La Niña does the opposite (NOAA Climate.gov).

Seasonal forecasts are published by the IMN each year. They are useful for scheduling earthworks and pours, but a house has to be designed for the bad years, not the average one.

Wind: what the CFIA wind guidelines ask for

Structural wind design in Costa Rica follows the CFIA's Lineamientos para el diseño por viento de edificaciones en Costa Rica, published in Alcance 48 to La Gaceta 52 on March 21, 2023, which replaced the 2021 version. The guidelines assign every district to one of five wind zones, from I to V (Table 3-1). Our guide to roofs in Costa Rica lists the zones for the main beach towns and the minimum pressures for roof cladding, so this section covers the other rules that decide how a house stands up to a storm.

The zones do not follow hurricane risk

The zone map is not a hurricane map. The highest zones are in the northwest, not on the Caribbean: Tilarán canton, on Lake Arenal, and the part of Liberia north of the Interamericana are zone V, while Limón and Talamanca on the Caribbean coast are zone I (CFIA, Table 3-1). Trade winds are part of the reason: the IMN's November 2007 bulletin describes trade winds reaching 70 to 90 km/h as typical of that month, with winds picking up particularly in the Central Valley and Guanacaste. The basic wind speed in the guidelines is a 3-second gust at 10 m height with a 50-year return period (section 3.1).

Ridges, bluffs and the seafront

Two site factors can raise the design pressure well above the zone value:

• Topography. A house in the upper half of an isolated hill, ridge or escarpment, or near its crest, gets a topographic factor when the feature is isolated, steep enough (height at least 0.2 times its half-length) and high enough: at least 4.5 m in the open exposure categories C and D, or 18 m in the rougher categories A and B (section 3.3). Many ocean-view lots meet that test. See our guide to building on a slope in Costa Rica.
• Exposure. Flat ground free of obstacles and the surface of bodies of water are the smoothest terrain type, D (section 3.3.1). Less roughness means stronger wind at the house, so a lot that faces open sea is designed for more pressure than one sheltered by trees or buildings.

Openings change the pressure inside the house

The guidelines treat an enclosed building and a partially enclosed one differently. The internal pressure coefficient is plus or minus 0.18 for an enclosed building and plus or minus 0.55 for a partially enclosed one (Table 4-1), about three times higher. If a large sliding door, a glass wall or a garage door gives way in a storm, the wind pushes on the roof from inside as well as lifting it from outside. Tropical homes are built around big openings, so their frames, glass, tracks and fixings need to be specified for the design pressure, not chosen from a catalogue.

Roof uplift is about the whole load path

Uplift is resisted by a chain: roof sheets to purlins, purlins to the roof structure, the roof structure to beams and walls, and walls to the foundation. The guidelines include an annex on roof-to-wall fixings for one and two-storey houses (Annex C.3.4), but many custom homes fall outside the limits of that simplified annex (our roof guide lists them) and are calculated in full. In a reinforced concrete house, the roof structure is anchored into concrete beams that tie into the columns, which gives a continuous path to the ground. The same frame is also designed for earthquakes; see our guide to earthquake resistant homes in Costa Rica.

Water: drainage and flood zones matter more

Since most storm damage here comes from water, the drainage design deserves as much attention as the structure.

• Know the flood and landslide exposure. The CNE, the national emergency commission, publishes preliminary hazard maps by canton for floods, landslides, volcanoes and faults. They show general exposure, not lot by lot conditions (Tico Times, September 2026).
• Respect the river buffers. The Forestry Law protects strips of land along rivers and creeks, wider on steep ground, and those strips are often where floodwater goes. Our guide to buying land in Costa Rica to build lists the distances.
• Size for a temporal, not a shower. Gutters, downpipes, channels and storm drains should handle days of rain on saturated ground, with outlets that do not dump water onto the slope below or a neighbour's lot.
• Set floor levels with margin. Keep finished floors above the highest water marks the neighbours remember and above the road, and grade the ground away from the house on every side.
• Keep water off cut slopes. Interceptor drains above cuts, drainage behind retaining walls and planted, protected slopes reduce the landslide risk that killed people during Otto and Tomas.

Choosing a lot with storms in mind

1. Check the CNE hazard map for the canton and look at where the lot sits in relation to rivers, gullies and steep slopes.
2. Visit in September or October if you can, or ask neighbours where water runs and pools in a temporal.
3. Look at the access road. Otto affected 2,778 km of roads (IMN); a lot reached through a single river crossing can be cut off for days.
4. Find the wind zone for the district and ask the engineer whether the lot needs a topographic factor or seafront exposure.
5. Commission a topographic survey and a soil study before the design is fixed; they show drainage paths and how the ground behaves when wet.
6. Ask your insurer in writing whether the policy covers wind, flood and landslide, and on what terms.

How Decentra Homes helps

Decentra Homes is a design-build custom home builder in Costa Rica, with design and construction CFIA certified under SANYC Ingeniería (CFIA registration CC-10880) and plans by CFIA-licensed architect Sergio Cerceño. We build in concrete first, then hybrid and steel frame, and like every house designed in Costa Rica, ours are designed to the CFIA wind guidelines. Before you buy, a consultation with our CFIA-licensed engineer and architect, who have 15 years of experience, costs $200 per hour and can review a lot for flood paths, slopes, access and wind exposure; surveys and soil studies are paid separately. Send us the lot details on WhatsApp or through our contact page.