May marks the beginning of Costa Rica’s Green Season — and for many experienced travelers, it’s one of the best months to visit.
As the first tropical rains return, the country transforms. Forests become vibrant, waterfalls grow more powerful, and landscapes turn an intense shade of green.
If you’re comparing travel dates, you can explore all months here:
👉 Best Time to Visit Costa Rica by Month (Complete Travel Guide)
Here’s what you need to know about visiting Costa Rica in May.
Weather in Costa Rica in May
May is the transition into Green Season.
What that usually means:
- Sunny mornings
- Afternoon tropical showers
- Cooler temperatures compared to March and April
- Increasing humidity
- Lush landscapes
Rain typically arrives later in the day, which allows for tours and activities in the morning.
Beach regions like Guanacaste and Manuel Antonio begin to see more greenery after months of dry heat.
Arenal and Monteverde become especially vibrant this time of year.
The Caribbean Coast follows its own pattern and can still offer good beach days.
Why May Is an Underrated Month
May offers a balance that many travelers overlook:
- Fewer crowds
- Better hotel availability
- More competitive pricing
- Dramatically greener scenery
- Strong wildlife activity
You still get plenty of sunshine — just with refreshing afternoon rain that cools things down.
For travelers who want beauty without peak-season intensity, May is a smart choice.
Best Places to Visit in Costa Rica in May
Arenal & La Fortuna
May is one of the most beautiful months in Arenal.
Expect:
- Powerful waterfalls
- Misty rainforest views
- Excellent hot spring conditions
- Fewer tourists
Morning hikes are ideal before afternoon showers.
Manuel Antonio
The rainforest begins to look lush again, and wildlife activity increases.
You can enjoy:
- National park tours
- Beach time in the morning
- Sunset views after light afternoon rain
Crowds are noticeably smaller compared to dry season.
Osa Peninsula
May is fantastic for serious nature lovers.
Corcovado National Park becomes intensely green, and wildlife sightings remain strong.
Rain enhances the jungle atmosphere without typically canceling activities.
Monteverde Cloud Forest
Green Season enhances the cloud forest experience.
Expect:
- Dramatic misty landscapes
- Rich birdlife
- Cooler temperatures
- Vibrant plant life
Trails may be slightly wetter, but the scenery becomes even more magical.
Guanacaste
While it begins receiving rain, mornings remain sunny and beach-friendly.
The benefit?
- Fewer visitors
- Lower rates
- Less crowded beaches
The dry brown landscape of March transforms into green hills again.
Wildlife in May
May is excellent for wildlife activity.
You may see:
- Sloths
- Monkeys
- Scarlet macaws
- Toucans
- Frogs becoming more active
- Increased birdlife
As water sources expand, wildlife becomes more dynamic in rainforest regions.
Best Activities in May
Because mornings are typically clear, most tours operate normally.
Great options include:
- Waterfall hikes
- Zip-lining
- White-water rafting
- Hot springs
- Wildlife tours
- Surfing (conditions often improve with changing tides)
Rain usually enhances the rainforest experience rather than disrupting it.
What to Pack for Costa Rica in May
Green Season requires slightly different packing.
Bring:
- Lightweight breathable clothing
- Quick-dry fabrics
- Swimsuits
- Comfortable walking shoes
- Sandals
- Reef-safe sunscreen
- Hat and sunglasses
Important additions:
- Light rain jacket
- Small umbrella
- Waterproof phone case
- Insect repellent
Quick-dry clothing becomes especially useful during this time.
Is May a Good Month to Visit Costa Rica?
May is ideal if you want:
- Fewer crowds
- Better pricing
- Lush rainforest scenery
- A more relaxed atmosphere
- Wildlife-rich experiences
It may not be ideal if you want zero rain and constant beach sun all day.
For guaranteed dry weather, January–March are better.
To compare all months and choose the best one for your trip:
👉 Best Time to Visit Costa Rica by Month (Complete Travel Guide)
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