The average daily high temperature in April is 19°C (66°F) and the overnight low averages 11°C (52°F). It's very pleasant but you do need a jacket/sweaters for evenings and early mornings. April to July is the driest part of the year in Malta. On average there are 5 days in April with some rain during the month.

Extremely

The average high in April is 20C, do it could be a bit warmer or cooler. It will be too cold to swim, but pleasant for sightseeing.

it will be warm ...not hot ..they don't have doors on their buses ..I have never been there and it was cold