The Best Time to Visit Costa Rica

Pacific dry season — December to April

The classic window and the reason most people come in winter: reliably sunny in Guanacaste, dry in Manuel Antonio and Arenal, and driest of all in Monteverde in February and March. It is also the most expensive and most heavily booked stretch of the year, and Christmas, New Year and Easter week need reserving months ahead. Guanacaste turns brown and dusty by late March — beautiful light, but not the emerald country of the brochures.

Green season — May to November

Costa Rica’s wet season is far kinder than the name suggests. The usual pattern is a clear, bright morning and a defined afternoon downpour that clears by evening, which leaves the whole first half of every day for sightseeing. Rates drop, crowds thin, the countryside turns properly green and the waterfalls run hard. May, June and November are the value sweet spots.

The veranillo — mid-July into August

Costa Ricans call it the veranillo, the little summer: a genuine drier spell in the middle of the green season, usually running from about mid-July into August. It is why July and August work far better than their rainfall averages suggest, and it coincides with humpback whales on the Pacific. North American school holidays create a mini high season, so book cars and popular hotels a couple of months out.

The wettest weeks — September and October

On the Pacific side these are the two wettest months of the year, tourism falls to its annual floor, and prices are the lowest you will ever see. Some lodges on the Osa Peninsula close outright. But — and this matters — the Caribbean coast runs on the opposite calendar, and September and October are among its finest and driest weeks. A trip planned in these months should be a Caribbean trip, or an Arenal and Central Valley trip, not a Pacific beach one.

January

Peak dry season and peak crowds. Guanacaste is reliably sunny, the Central Valley is at its most pleasant, and the Caribbean is at its wettest. Prices stay high through mid-month; book four to six months out for the popular lodges.

February

Arguably the best all-round month of the year: driest conditions nationwide, including the driest stretch in Monteverde, and a dry window on the Caribbean too. Crowds and prices stay high, but the weather reliability justifies it, and resplendent quetzals begin their nesting season in the cloud forest.

March

Still dry and hot, with Guanacaste turning brown and dusty by the end of the month. Spring-break traffic pushes crowds and rates up, and if Easter week falls in March the country effectively stops for it.

April

The dry season’s last stretch, with the first afternoon showers appearing late in the month. Holy Week brings the heaviest domestic travel of the year — beaches packed, roads busy, many businesses shut on the Thursday and Friday. Prices drop noticeably in the final ten days.

May

The green season begins, usually with mornings still clear and rain arriving in the afternoon. Crowds fall away sharply, rates drop, and the countryside turns green again within a fortnight. One of the best value-for-weather months of the whole year.

June

A consistent green-season pattern: sunny mornings, afternoon downpours, few visitors and low prices. Rivers run high, which is excellent for whitewater rafting and less good for road conditions in the far south.

July

The veranillo brings a genuine drier spell, and North American summer holidays create a mini high season. Book cars and popular hotels two months ahead; prices sit above June but well below the winter peak.

August

Much like July with a little more rain, and humpback whale season under way on the Pacific. Crowds thin after mid-month and the value is good.

September

The wettest month on the Pacific side and the start of the true low season, with the lowest prices of the year and empty trails. The Osa and parts of the central Pacific are genuinely difficult. On the Caribbean, by contrast, this is one of the two best months.

October

The slowest and cheapest tourism month of the year. Pacific rainfall peaks, some Osa lodges close, and even Monteverde can be socked in for days. Caribbean weather, however, is at its finest — plan a September or October trip around Puerto Viejo, Cahuita and Tortuguero.

November

A transitional month and a quiet bargain: the rains taper on the Pacific through the month, crowds have not yet returned, and by late November much of the country is dry and green at the same time. The Caribbean, though, is entering its wettest stretch.

December

Two different months in one. Through about the 15th the weather is drying, crowds are light and prices are still low — one of the best-value windows all year. From roughly the 18th the country flips to peak season, and Christmas and New Year are the dearest and most heavily booked days of the year.

September and October — the lowest prices of the year

Tourism falls to its annual floor in these two months and hotel rates, tours and car hire follow it down. The catch is real: the Pacific side is at its wettest, some Osa Peninsula lodges close outright, and mountain roads can wash out. The way to use these months well is to point the trip at the Caribbean — Puerto Viejo, Cahuita, Tortuguero — where September and October are two of the driest and finest weeks of the year, or to stay inland at Arenal and in the Central Valley.

For better weather at only a modest premium, aim instead for May, June, November or the first two weeks of December. These are the value sweet spots: clear mornings, an afternoon shower, green countryside, thin crowds and prices well below the winter peak. Avoid Christmas to New Year and Semana Santa entirely unless you have booked months in advance.

Costa Rica and hurricanes — the truth

Costa Rica lies far enough south that hurricanes almost never reach it: in more than 170 years of records exactly one has made landfall, Otto in November 2016, on the far northern border. Do not, however, let anyone tell you the country is untouched by storms. The danger here is water rather than wind — Tropical Storm Nate in October 2017 never made landfall and still caused the costliest natural disaster in the country’s history through flooding and landslides.

The practical reading for a traveller: September and October are the wettest months on the Pacific side regardless of storms, and a system passing offshore can turn that into flooded rivers and closed mountain roads within hours. If you travel then, buy travel insurance, build a spare day into the itinerary, favour the Caribbean, the Central Valley and Arenal over the Osa Peninsula, and do not plan a tight connection on your last day.

Roads, shuttles and driving after dark

Costa Rica is close to the equator, so the sun sets around six o’clock every day of the year. Mountain roads are narrow, unlit and unshouldered, often without guard rails, and shared with pedestrians, cyclists and the occasional cow. Do not drive outside towns after dark, and plan every travel day to finish by late afternoon — this matters more in the green season, when a landslide or a flooded ford can add an hour without warning.

For most travellers we would suggest shared or private shuttles between the main hubs, with a short domestic flight for the long hops. If you do hire a car, take a high-clearance vehicle rather than a compact, and budget for the mandatory Costa Rican liability insurance charged at the counter on top of the advertised rate — it is the single most common billing surprise visitors report. Never leave anything visible in a parked car, at any hour, anywhere.

Guanacaste & the north Pacific

The driest corner of the country, with weeks of cloudless sky between January and March and afternoon storms in the green season that usually arrive after two o’clock. Dry-season days run hot; green-season days are a little cooler. See where to stay in Tamarindo and Guanacaste.

The central Pacific — Manuel Antonio & Jacó

Wetter and more humid than Guanacaste all year, with September and October the heaviest months by a wide margin. December to April is the dependable window. See where to stay in Manuel Antonio.

Arenal & the northern lowlands

Arenal is rainforest and it can rain in any month; the volcano is frequently wrapped in cloud regardless of season, so give yourself two or three nights and take the clear morning when it comes. December to April is driest. See where to stay in La Fortuna.

Monteverde & the cloud forest

Never truly dry. February and March are the least wet; September and October the wettest. Expect the sixties and low seventies by day, high fifties at night, and a dry-season wind on the ridge that makes it feel colder than the thermometer says. See where to stay in Monteverde.

The Caribbean coast — a different calendar

This is the single most useful planning fact on the page: the Caribbean does not follow the Pacific. Its driest, brightest weeks are February to March and again September to October — precisely when the Pacific is at its worst — and its wettest stretch is November to January. Warm and humid all year, with rain possible in any month.

San José & the Central Valley

The Central Valley sits high enough to be spring-like the whole year round — cool mornings, warm afternoons, and even in the green season rain that usually arrives as a defined afternoon event rather than a washout. See where to stay in San José.

What is the best time to visit Costa Rica?

For the Pacific side — Guanacaste, Manuel Antonio, Arenal, Monteverde and the Central Valley — the best weather runs December to April, with February and March the most reliable of all. This is also the busiest and most expensive season. The Caribbean coast runs on a different calendar and is at its best in February–March and again in September–October. If you want good weather without peak prices, aim for May, June, November or the first half of December.

What is the cheapest time to visit Costa Rica?

September and October are the cheapest months by a clear margin — they are the wettest weeks on the Pacific and tourism falls to its annual floor. If you would rather not gamble on the weather, May, June, November and the first two weeks of December offer materially better conditions for a modest premium. The dearest periods are Christmas through January and Easter week.

Does Costa Rica get hurricanes?

Direct hits are almost unheard of. Costa Rica lies far enough south of the Atlantic hurricane belt that in more than 170 years of records only one hurricane has made landfall — Otto, in November 2016, on the far northern border. The genuine risk is water, not wind: September and October are the wettest months on the Pacific side, driven by the seasonal rain belt rather than by storms, and a hurricane passing well offshore can still amplify that into flooded rivers, landslides and closed mountain roads within hours. In those two months, buy travel insurance, build a spare day into the itinerary, and favour the Caribbean, the Central Valley or Arenal over the Osa Peninsula.

When is the best time to see wildlife in Costa Rica?

There is no bad month, but there are good windows. Resplendent quetzals nest in the Monteverde and Talamanca cloud forests from about February to May. Humpback whales are on the Pacific from July to October, with a second northern-hemisphere season from December to March. Leatherback turtles nest at Playa Grande roughly October to March; green turtles arrive at Tortuguero on the Caribbean from July to October. Green-season months bring the most active frogs, insects and birdsong.

Is the green season a bad time to visit Costa Rica?

Not at all, and many regular visitors prefer it. The typical green-season day gives you a clear, bright morning and a defined afternoon downpour that clears by evening — so sightsee early and keep the afternoon for the hot springs or a book. You get greener country, fuller waterfalls, far fewer people and materially lower prices. The two months to treat with real caution are September and October on the Pacific side.

Which month should I avoid in Costa Rica?

If your heart is set on a Pacific beach, avoid September and October — they are genuinely wet, some Osa lodges close, and mountain roads can wash out. If your concern is crowds and cost rather than rain, avoid Christmas to New Year and Semana Santa (Easter week), which are the most expensive and most heavily booked days of the year and require reserving months in advance.