Things to Do in Costa Rica in September
September weather, activities, events & insider tips
September Weather in Costa Rica
Temperature, rainfall and humidity at a glance
Is September Right for You?
Weigh the advantages and considerations before booking
- + The Caribbean side, Tortuguero, Cahuita, slides into its driest window. Turtles still nest. But for once the beaches are reachable without wading through knee-deep mud.
- + Hotel rates across Costa Rica drop 30-40% from August peak, and Manuel Antonio's sloth trails feel like your private jungle.
- + Coffee harvest kicks off in the Central Valley. Fincas like Doka and Britt let visitors pick cherries by hand, an experience locked to this month alone.
- + Pacific surf swells roll in from southern storms. Witch's Rock and Pavones deliver steady 1.5-2m (5-7 ft) waves minus the summer hordes.
- − San José and the central highlands morph into a daily sauna. Expect 90% humidity that soaks your shirt before 9am.
- − Backcountry roads to Monteverde and similar spots dissolve into tire-eating mud traps. 4WD is mandatory. Budget an extra 2 hours even then.
- − River rafting turns dicey on the Pacuare and Sarapiquí. Each storm spikes water levels into the danger zone.
Best Activities in September
Top things to do during your visit
September is when green sea turtle nesting peaks. Night tours from 8pm-midnight let you watch 150kg (330lb) turtles dig nests under moonlight, while daytime canal trips through the flooded forests reveal caimans, howler monkeys, and the electric blue morpho butterflies that only appear this month when water levels are perfect.
The coffee cherries turn ruby red in September, and farms like Café Britt open their picking fields to visitors. Mornings are spent filling baskets with fragrant cherries, afternoons roasting beans over wood fires, and evenings in cupping sessions where the September harvest tastes like caramel and orange peel.
September's afternoon storms push animals into dawn action. Howler monkeys wake you at 5:30am with prehistoric roars, and by 6am you're on empty trails watching three-toed sloths stretch after rain-soaked nights. Pre-storm humidity swells insect clouds, pulling resplendent quetzals into feeding frenzies.
September funnels southern swells to Pacific breaks left empty because tourists assume it's rainy season. Witch's Rock dishes out glassy 2m (6.5 ft) waves with maybe five other surfers in sight, while Playa Grande serves beginner-friendly whitewash minus the February masses.
September storms chase locals indoors, transforming the Mercado Central into a steamy maze of sizzling plantain stands and coffee roasters. The rainy-season specialty is gallo pinto with sour cream from Cartago dairy farms, only dished up when afternoon storms keep farmers in the city longer.
September Events & Festivals
What's happening during your visit
September 15th turns every town square into a marching-band parade. San José's Avenida Central floods with students in traditional dress, drums echoing between colonial facades, and street vendors pushing copo (shaved ice) in tropical flavors you won't taste any other month.
Packing Checklist
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Essential Tips
Insider knowledge and common pitfalls to avoid
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