The El Niño phenomenon is likely to be particularly intense this year, scientists warn. If so North America may face extreme weather, higher food prices and greater health risks.
These powerful tropical storms are generally becoming more intense as the world warms.
Norwich Jamaica Aid says sound systems and selectors will be performing to raise "vital funds".
The event in Penzance is in support of ShelterBox which is involved in recovery efforts.
A family in Jamaica are still battling the destruction caused by Hurricane Mellisa last month.
Aiesha Barrett's track Jamaica Strong has become an anthem for the hurricane-hit country.
A UK midwife helping those affected by Hurricane Melissa says there is "a lot of stoicism" among Jamaican people.
Essential items have been collected for people affected by October's Hurricane Melissa.
Volunteers are hoping to send two containers full of aid to the Caribbean.
