Guanacaste is the corner of Costa Rica where the Pacific meets tropical dry forest, which is why couples who want sun, sea and nature without long transfers look for it so often. The official tourism site describes it as the cradle of Costa Rican folklore, with tropical dry forests, pristine beaches and lowland mountain forests, and mentions Tamarindo among its beaches. This guide combines that source with the UK FCDO travel advice and Visit Costa Rica's climate page, consulted on 7 November 2026.
When to go
According to Visit Costa Rica, on the Pacific side the dry season runs from December to March, April is a transition month, and the rainy season runs from May to October, with November as a transition month. In July and August there is usually a break in the rain known as the "veranillo" (little summer). March is the driest and hottest month, while September and October are the rainiest, with rain mostly in the afternoon and early evening. The official site also splits the year into a dry season (December to April) and a green season (May to November); in the green season it recommends visiting national parks in the morning. If you want guaranteed beach days, aim for the dry season; if you prefer green landscapes and fewer people, the green season has its charm, as long as you have a plan B for the afternoons.
What to do
Guanacaste combines beaches, dry-forest trails and day trips to national parks. The Pacific beaches invite long sunsets, and the region is a starting point for the wildlife that makes the country famous: the official site says Costa Rica holds about 6% of the world's biodiversity and sets aside more than a quarter of its land for conservation. Book sea activities with registered operators and always ask about sea conditions.
Water and street safety
The FCDO is clear: rip currents are very common and lifeguards are often absent; 50 to 60 people drown each year, roughly a third of them tourists. Swim only where there are flags or lifeguards, never after drinking and never at night. The advice names the Pacific surf beaches between Playa Azul and Playa Esterillos as places where crocodiles are regularly seen, although that stretch lies further south on the central Pacific. Theft is common: do not leave luggage in a parked car and watch your bag on beaches and buses. The advice also warns of sexual assaults that seem to target tourists, so never leave a drink unattended.
Drinks and laws
Methanol in cheap local spirits, such as vodka and guaro, has caused deaths and serious illness and cannot be detected by smell or taste: choose known brands in reliable venues. Drug possession and trafficking carry harsh penalties, with a minimum sentence of eight years. The official site states that laws protect LGBTQ+ citizens and travellers, and the FCDO describes the country as generally welcoming.
Lifestyle scene
We could not verify any swinger club or event with an official website in Guanacaste or elsewhere in the country. A third-party listing mentioned an adults-only hotel in Jaco, but without its own findable website we do not publish it. If you are considering an adults-only stay, write to the property and ask for its rules in writing.
Health and logistics
The FCDO lists malaria, dengue and zika, and notes that visitors only receive free first emergency care, so take insurance with repatriation. Ambulance: 911. Rent a car only if you are comfortable driving in rain and avoid night driving. Before booking, read our Costa Rica travel guide for couples.
Frequently asked questions
When is the best time for Guanacaste? It depends: December to March is sunnier; May to October is greener with afternoon rain. Are there verified swinger clubs? We list none. Is it safe to swim? Only with care: rip currents are common and lifeguards are often missing.
Etiquette and consent for couples
Travelling with a lifestyle mindset does not change the basic rules of coexistence: what may be a private agreement at home moves within local rules abroad that you may not know. Talk with your partner before leaving about limits, pause words and what to do if either of you feels uncomfortable. Respect the privacy of other guests and staff, do not photograph strangers and treat a "no" as final, with no negotiation. In public spaces such as beaches, streets and transport, keep your behaviour discreet: public indecency laws exist and police enforce them. If a property advertises itself as adults-only, that does not mean it accepts lifestyle activity; ask about its rules before booking and keep the answer in writing.
Quick checklist before booking
Check that your passport meets the validity rules for your nationality, read your government's travel advice and the CDC or another health authority's page, take insurance with medical and repatriation cover, and note your consulate's phone number. Download offline maps, keep digital copies of documents somewhere safe, tell your bank you are travelling and always carry some cash for surprises. Avoid sharing your live location and your lodging's name on public social media. If anything you read here changes, the official sources cited above take precedence over any guide, including this one; that is why we link them and give the date we consulted them. We will review this page again when the sources are updated.
