The annual Wattah Wattah Festival, also known as the Basaan Festival, honors St. John the Baptist’s birth, San Juan City’s patron saint.

At the heart of the celebration is the tradition of splashing water, which symbolizes St. John's role in baptizing Jesus Christ in the River Jordan. The practice, locally known as "basaan," is also believed to represent purification and blessings for those who take part in the festivities.

Over the years, the celebration has grown into a major event that draws both residents and visitors, who take to the streets to splash water on one another in a festive display of faith and community spirit.

Aside from the water-dousing tradition, the festival features street dancing, parades, and cultural performances that highlight the city's heritage and vibrant culture.

Here are some tips for first-time attendees:

• Wear clothes you don't mind getting soaked.

You will get wet. Even if you're just passing through San Juan, expect to be splashed.

• Protect your gadgets.

Use waterproof pouches or zip-lock bags for phones, wallets, IDs, and power banks.

• Avoid bringing valuables.

Leave expensive electronics, jewelry, and important documents at home if possible.

• Wear comfortable footwear with good grip.

Streets can become slippery due to constant splashing.

• Bring a change of clothes.

This can make the trip home much more comfortable.

• Use public transportation if possible.

Expect road closures, heavy traffic, and limited parking in parts of San Juan.

• Stay hydrated.

It may sound ironic during a water festival, but participants still spend hours outdoors in the heat.

• Follow local authorities' instructions.

Pay attention to designated routes, traffic advisories, and safety reminders.

• Be mindful of others.

While splashing water is part of the tradition, avoid actions that could cause accidents or discomfort, especially around motorists, elderly individuals, and young children.

• Prepare for crowds.

The festival attracts thousands of participants and spectators each year, so expect congested streets.