Jaco in October: Green Season Surf, Afternoon Rain and What to Do

In October, Jaco wakes to a hazy, steaming morning, with surfers already paddling out over dark sand and pelicans skimming the swells. By midafternoon the sky over the hills behind town turns the color of slate, and the first fat drops send everyone under the awnings of the beachfront bars.

The jungle is at its greenest, the streets are easygoing, and the days belong to surf, rainforest and long lunches. It is a month for travelers who like their beach town lush, loose and a little wet.

The surf beach at Jaco in the rainiest months · Illustration

What is the weather like in Jaco in October?

October in Jaco is hot, humid and very rainy: this is the heart of the green season, and showers are part of nearly every day. The air stays warm from dawn to well after dark, and the sea is as warm as the air.

Month	Average high (°F)	Average low (°F)	Rain days	Sea (°F)
September	81.2	75.4	29.7	86.1
October	80.5	75.1	30.0	85.4
November	80.5	75.1	27.4	83.3

The rain usually comes in a pattern. The day’s finest hours tend to arrive early, sunny or softly blurred, ideal for surfing lessons, a stroll, or time on the sand. Clouds tend to build after lunch, and the afternoon brings heavy downpours that can last an hour or run into the evening. Some days turn gray and drizzly from start to finish, so a rigid beach schedule is a poor idea.

Heat is the other half of the story. Even in the rain the air feels warm and sticky, and evenings never cool enough for a sweater. Light cotton, quick-drying shirts and sandals are what you live in, with a thin rain jacket for the walk to dinner.

Daylight lasts just shy of twelve hours, and at dusk storm clouds shift to pink and orange as the sky clears for a time, all of it soft light that often turns dramatic. Once a rain burst passes, vapor rises off the hills, and the scent of damp soil and sea salt fills the town.

Can you swim in Jaco in October?

The water stays warm enough for a long, comfortable dip, but whether you can swim safely depends on the surf and currents. The difficulty is not the temperature but the surf and the currents.

Jaco’s long dark-sand beach is a beach break, so there are usually waves, and in the rainy months they are often lively. That suits surfers and bodyboarders, and it is why the town is a classic first stop for learning to surf. Nervous swimmers and families with small children tend to do better wading at the edge than going out beyond the break.

On this coast, rip currents are a grave danger, causing several American visitors to drown each year. Since lifeguards and alerts about hazards are absent at the majority of Costa Rica’s beaches, take note of the spots where neighborhood surfers and swimmers go in, check with your hotel or surf school regarding that day’s circumstances, and remain on shore if the sea appears stirred up or the surf is strong.

Heavy rain can also send mud and debris into the water, which is one more reason to look before you go in. Bring a rash guard, sunscreen and a mask if you plan to look around rocky edges, though visibility is often modest in the green season.

What to do in Jaco in October

October is not a month of big local festivals in Jaco, and the calendar’s main date is October 12, the Day of the Cultures. The famous Carnival around that date is held in Limon, on the Caribbean side, with parades, music and Afro-Caribbean food.

It is a long way from the Pacific beach, so for most visitors it is something to hear about rather than attend. What Jaco offers in October is the rhythm of the green season: early beach hours, a rainforest in full leaf and the steady pull of the surf.

The days work best when they follow the weather. Put the beach, the surf and anything outdoors in the morning, keep midday for a long meal, and spend the afternoon browsing shops, visiting a spa, sitting in a café or resting in a hammock on a covered porch. When the rain stops, the evening street scene fills back up with strollers, vendors and the smell of grilling.

Surfing the beach break

Jaco’s beach break suits new surfers and seasoned ones alike, and the town’s surf schools and rental shops accommodate each group. The long stretch of sand has several peaks, so the crowd spreads out, and the waves in the green season often come with more push than in the dry months. Beginners are usually in the whitewater near the shore, while stronger surfers head to the outer peaks.

Early morning is the time most people choose, when the wind is gentler and the sky is still clear. Afternoon sessions can be messier, with choppy water and the chance of lightning, which is a good reason to head in as soon as clouds stack up. Take a lesson on your first day even if you have surfed before, because instructors know where the rips run that day.

Rainforest, rivers and wildlife outings

The hills behind Jaco are thick with green in October, and this is a good month to be among leaves, waterfalls and the sound of frogs after dark. Day trips from town include the Tarcoles River, where boat trips and the road bridge are known for crocodiles, and Carara National Park, a forest known for scarlet macaws. Manuel Antonio National Park is another popular outing along the coast, but check current SINAC entry and reservation rules before going.

Wildlife is a chance, never a promise. Guided walks are how most visitors spot sloths, monkeys and birds, and they are more rewarding in the early hours before the afternoon rain. Trails are muddy and slippery, so wear shoes with grip and carry a poncho.

Eating and drinking in the rain

A rainy afternoon in Jaco is a good time for the local table. Seek out a casado, Costa Rica’s everyday lunch, a plate of rice, beans, plantain and salad with fish, chicken or beef to choose from, plus gallo pinto, the rice and beans tossed with onion and cilantro that arrive alongside breakfast eggs. Ceviche and grilled fresh fish are everywhere on the coast, as are cold fruit drinks, coconut water and strong Costa Rican coffee.

Small family restaurants called sodas serve the best-value meals, while the beachfront places lean toward sunset cocktails and live music. Open-air terraces with roofs are the best spots when the downpour starts, since you can watch it roll in over the sea with a drink in hand. On quieter nights, tables are easy to find and kitchens are not rushed.

After dinner, the main street carries on with bars, small shops selling hammocks, wood carvings and beachwear, and street food stalls. The mood in October is relaxed, with fewer tour groups and more surfers and long-stay visitors. If the weather clears, a barefoot walk on the sand under a cloudy but warm sky is a fine way to end the day.

A two-day itinerary for Jaco in October

Day 1 is for the beach and the town. Start early with coffee and a plate of gallo pinto, then take a surf lesson or a long swim while the morning is best. Rinse off, and spend the late morning in the shops and cafés along the main street, picking up a hat or a poncho if the sky looks threatening.

Have a long lunch at a soda or a covered beach restaurant, timed for the first afternoon clouds. When the rain arrives, use it for a nap, a massage or a book in a hammock. Should the sky brighten, head back to the beach to catch the glow ahead of nightfall, since daylight runs just shy of twelve hours, then wrap up with a cold drink and fresh fish on a terrace.

Day 2 goes into the green. Leave at first light for a guided walk in Carara National Park or a boat trip on the Tarcoles River, the hour when animals are most active and the air is coolest. On your return, pause at a roadside spot for a plate of casado, and afterward head back to Jaco while the afternoon sky deepens.

If the rain turns the outing into a washout, switch to a cooking class, a chocolate or coffee tasting, a spa treatment or a slow afternoon in a covered café with a view. Dinner can be tacos or pizza from a casual place near your hotel, followed by a last stroll under the awnings when the shower eases.

Is Jaco busy in October?

No, October is one of the quieter months in Jaco, with space on the beach and in the restaurants. The rainy season keeps many casual visitors away, and the crowd is mostly surfers, long-stay travelers, digital nomads and weekend visitors from San Jose.

The town generally feels less crowded than in the dry months, though popular spots can still feel lively on weekend evenings. Prices are often gentler than in the dry months, and some hotels and tour operators offer green-season rates. Book flights and your first nights early as a habit, and leave the rest flexible so you can adapt to the weather.

Larger groups and families who need several rooms together should book earlier, and anyone planning around the Day of the Cultures long weekend may find domestic travelers filling the beach for a couple of days. Beyond that, the town is relaxed and unhurried.

What to pack for Jaco in October

Bring clothing that dries quickly and footwear you will not mind muddying, since heat, damp air and unexpected showers are all part of the deal.

Pack a poncho or a lightweight rain jacket, since most days bring heavy showers in the afternoon.
Quick-drying shirts and shorts, since cotton stays damp in the humidity.
Sandals and a pair of closed shoes with grip for muddy forest trails.
A rash guard and sunscreen for long mornings in the surf.
A dry bag or zip bags to protect phones, passports and cameras from sudden showers.
Insect repellent for evenings and rainforest walks.

Good to know before you go

The U.S. State Department rates Costa Rica Level 2, ‘Exercise increased caution,’ due to crime; it says petty crime is common throughout Costa Rica and that violent crime also affects tourists, including armed robbery, homicide and sexual assault.

Before traveling, confirm the passport, proof-of-exit and permitted-stay requirements that apply to your trip, then build in slack for travel days. Getting from San Jose to Jaco usually eats up about two hours behind the wheel, and because downpours can stretch that out, aim to arrive before dark.

Plan for the outdoors with some wiggle room, bring along a bit of cash to cover small sodas and shops, and keep valuables hidden when you are on the beach or in parked cars, because petty theft is widespread throughout the country. Costa Rica also follows an Atlantic hurricane season, so keep an eye on forecasts and your travel insurance terms when you book.

Jaco in October vs September and November

Moving the trip a month earlier brings a sea that is a touch warmer and a rain pattern that feels much the same, with the same afternoon storms and the same quiet streets. September is a good choice for travelers who want the warmest water and the lowest crowds, and who do not mind being flexible with plans.

Moving it a month later brings a slightly cooler sea and a bit less rain, with the green season starting to ease. Mornings are still the best part of the day, but you may find more clear stretches and a little more traffic as visitors begin to return. November suits travelers who want the lush landscape with a slightly better chance of dry hours.

If surfing, waterfalls and empty beaches matter most, stay with October or September and plan around the rain. If you want to mix sightseeing with beach time and prefer slightly easier weather, November is the better pick. Festival lovers who want the Caribbean Carnival around October 12 will need to plan a separate trip to Limon.

Is October a good time to visit Jaco?

Yes, October is a good time for travelers who enjoy surf, green landscapes and quiet beaches and do not mind rain. It rewards early risers, flexible planners and anyone who likes a warm sea and a relaxed town without the dry-season crowds.

It is a poorer fit for travelers who need guaranteed sunshine, a fixed beach schedule or clear mountain views. Families with small children and nervous swimmers can still enjoy the month, but they should stay close to the shore, follow local advice on the surf and keep some indoor options in mind for wet afternoons.

Once you get there, make the most of the good weather by heading to the beach that first morning, and arrange a surf lesson or a guided walk for the following day. What is special about October in Jaco is the contrast: warm sea and heavy skies, steaming jungle and quiet streets, and the sudden sunset glow after a storm over the dark sand.

Sources

Open-Meteo / ECMWF ERA5, normals 1991-2020 computed for the grid cell at 9.6145N 84.6285W, checked October 8, 2026
Open-Meteo Marine API, average 2015-2024, checked October 8, 2026
sunrise-sunset.org, sunrise and sunset calculated for the 15th of the month, checked October 8, 2026
U.S. Department of State, Costa Rica Travel Information, Safety and security (https://travel.state.gov/content/travel/en/international-travel/International-Travel-Country-Information-Pages/CostaRica.html), checked October 8, 2026
U.S. Department of State, Costa Rica Travel Advisory, issued April 1, 2026 (https://travel.state.gov/content/travel/en/traveladvisories/traveladvisories/costa-rica-travel-advisory.html), read via the State Department open data API on October 8, 2026