Whale watching in Guanacaste centers on humpback whales, which visit Costa Rica's Pacific coast in two seasons: southern hemisphere whales from about mid-July to early November, and northern hemisphere whales from about December to April. Guanacaste has fewer dedicated whale tours than the southern Pacific coast, but sightings are possible on sailing trips, boat outings, and even from shore. Whales are wild animals, so no trip can guarantee a sighting.
Key Takeaways
Two humpback populations visit, giving Costa Rica one of the longest whale seasons anywhere.
In Guanacaste, August to October and December to April are the best windows.
Sunset sails and boat expeditions are the easiest way to look for whales from Las Catalinas.
Responsible boats keep their distance, slow down, and never chase or surround whales.
Why Humpbacks Come to Costa Rica
Humpback whales travel to Costa Rica's warm Pacific waters to mate, give birth, and raise their calves. Whales from the southern hemisphere make one of the longest migrations of any mammal, and the country's two populations mean whales can be present for much of the year, according to Visit Costa Rica.
When to See Whales in Guanacaste
Southern hemisphere humpbacks arrive from about mid-July to the beginning of November, while northern hemisphere whales arrive in December and stay until around early April, according to The Tico Times. The same source notes that dedicated whale tours are less common in Guanacaste than in the south, but sightings are possible from August to October and December to April on sailing and catamaran trips. The table below summarizes the seasons.
Humpback Whale Seasons in Guanacaste
| Population | Typical months | Notes |
|---|---|---|
| Southern hemisphere humpbacks | Mid-July to early November | Best odds in Guanacaste from August to October |
| Northern hemisphere humpbacks | December to early April | Overlaps the dry season and manta ray season |
| Dolphins | Year-round | Commonly seen on boat trips along the coast |
Based on The Tico Times and Villa Alberti website descriptions. Wildlife sightings are never guaranteed.
Whale Watching Near Las Catalinas
Las Catalinas has reported that August and September are an especially good time to spot whales from town, sometimes from the beach or a paddleboard, in a post on The Daily. Villa Alberti's things to do page also notes that humpback whales pass the Catalina Islands between December and April.
Ways to look for whales during a stay include:
Sunset sailing. A catamaran outing in the two hours before dark, with a chance of whales and dolphins in season.
Full-day boat expeditions. Islands, empty beaches, and time on open water.
Diving and snorkeling trips. Boats to the Catalina Islands sometimes encounter whales on the way.
From the villa. Keep binoculars on the rooftop. A spout on the horizon is always worth a look.
The concierge can book outings in advance and match them to the season. For more on what lives in these waters, see our guide to wildlife near Las Catalinas.
The bay and headlands seen through an arched loggia at Villa Alberti. In whale season, it pays to keep an eye on the horizon.
Guanacaste or the Southern Pacific?
The southern Pacific coast, around Uvita and Marino Ballena National Park, is Costa Rica's best-known whale watching area, with dedicated tours in season. Guanacaste offers fewer dedicated tours, but it pairs whale sightings with dry-season sun, calm beaches, and a wider range of water activities. For many groups, a whale seen from a sunset sail in Guanacaste is a bonus rather than the sole purpose of the trip. If whales are the main goal, our comparison of Guanacaste vs. Manuel Antonio can help you weigh the regions.
Combining Whales With the Rest of Your Stay
Whale seasons overlap with other highlights. From December to April, the same trips that look for whales can also visit the Catalina Islands, where manta rays pass through. From August to October, the green season brings fewer visitors and lush hillsides, so a morning on the water can be followed by an afternoon at the villa. The concierge can plan boat days around the weather and sea conditions.
Las Catalinas and the open Pacific from above. Spouts can sometimes be spotted offshore in season, though a boat improves the odds.
Telling Whales and Dolphins Apart
From a distance, the first sign of a humpback is usually a spout, a tall column of mist that can be visible from far away. Look next for the curved back and dorsal fin as the whale dives, followed by the tail rising above the water. Dolphins move faster and closer to the surface, often in groups that ride the boat's wake. Mothers with calves tend to travel slowly, so a calm, patient boat often gets the best view.
Watching Whales Responsibly
Good operators follow simple rules that protect whales and their calves. Boats should slow down, reduce engine noise and wake, travel parallel to the whales, and never approach directly or from behind. Swimming with or feeding whales and dolphins is prohibited, according to the same Tico Times guide. Ask your operator how they follow these guidelines before you book.
A private boat day off the Guanacaste coast. The concierge can arrange charters that pair fishing or island stops with a lookout for whales in season.
Tips for a Better Whale Trip
Go in the morning or late afternoon, when the sea is often calmer.
Bring motion sickness remedies if anyone in the group is sensitive.
Pack sun protection, a light layer, and a camera with a zoom lens.
Book a private charter for families with young children so the pace suits everyone.
Frequently Asked Questions
What month is best for whale watching in Guanacaste?
August to October and December to April offer the best chances. Sightings are never guaranteed.
Can you see whales from shore in Las Catalinas?
Sometimes. Las Catalinas has reported shore and paddleboard sightings in season, but a boat improves the odds.
Are dolphins common too?
Dolphins are often seen along the Pacific coast, and boat trips in Guanacaste may encounter them year-round.
Plan a Whale Season Stay at Villa Alberti
Share your preferred dates and group details below. The Villa Alberti team will follow up to discuss availability and the best time for whales during your stay.
