Jamaica's official language is English, although Patois is the dialect most Jamaicans use on a day to day basis among themselves, or with long time visitors. Jamaica falls under Eastern Standard Time.
Temperatures remain fairly constant year round on the West Coast.
Mid to high 80's up into the low 90's by day, nights drop down into the mid to low 70's most months. December through February may drop a little bit more, prompting some people to feel a need for a light wrap if outdoors. Humidity is highest August-October. Jamaica is in the tropics, so rain can be a frequent visitor to the island. Sandals, bathing suits, and a hat to will be your typical daily attire.