Guanacaste Weather in May

Hot and humid, with frequent heavy rain. Average highs of 32°C and lows of 24°C, with around 22 rainy days expected throughout the month.

While May isn't our top-rated month for Guanacaste, it has its own appeal — typically lower prices, fewer crowds, and a more local feel.

Average high

32°C

Average low

24°C

Rainy days

22 days

Best months to visit

January, February, March, December

What to do in Guanacaste in May

Whatever the weather, Guanacaste rewards curious visitors. Here are some of the best ways to spend your time:

Beach hopping across multiple coastal towns Dry forest hiking in Santa Rosa National Park Snorkeling and diving offshore islands Surfing at multiple beach breaks Wildlife spotting in protected reserves Hot springs soaking near Arenal volcano

What to pack for May

Light breathable clothing, high-SPF sunscreen, a wide-brimmed hat, and a reusable water bottle are essential. Pack sandals and at least one light layer for air-conditioned interiors.