The state of emergency in the Jamaican parish of St James, which includes Montego Bay, has been extended until August 2.
The Foreign Office has updated its travel advice and is reminding British tourists to exercise caution and be prepared for last-minute changes.
The state of emergency has been in place since January and has been extended several times.
It follows the launch of a major military operation in the region, in response to a spate of shootings in the northwestern parish.
The FCO’s guidance says: "Security operations are ongoing and further activity could occur with little or no notice.
"You should exercise caution if you’re in the area, particularly if travelling at night, and follow the advice of the local authorities, including any restrictions.
"These may also result in road closures or travel delays, and the operating hours of some businesses may be subject to change."
