Passport validity
The source states no minimum passport validity.
Visa rules · Tourist entry
Other passports: see the rules for every passport visiting Puerto Rico.
The answer
A citizen of a foreign country who seeks to enter the United States generally must first obtain a U.S. visa, which is placed in the traveler's passport.
Puerto Rico is a US territory, and the US Visa Waiver Program applies there.
The source states no minimum passport validity.
These rules cover tourist visits. Work, study and transit follow other rules.
Other places Guinea-Bissau passport holders can visit without a visa, within 2,500 km of San Juan, nearest first.
Average high and low temperature and rainfall in San Juan, month by month.
Partner sites for flights, a place to stay, travel cover, and mobile data in Puerto Rico.
iVisa · Visa service
An agency can prepare and file your application for Puerto Rico for a service fee. You can also apply yourself through the official source above.
See visa help for Puerto RicoAviasales · Flights
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EKTA · Insurance
Medical and trip cover for Puerto Rico.
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Airalo · eSIM
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