Thought I would start this as a guide, please contribute!
Months when fruits are ripe below, everbearings/off-season producers not included:
January- Dragon Fruit, Cherimoya/Atemoya/Sugar Apple, Guava
February- Cherimoya/Atemoya, Guava
March- Cherimoya/Atemoya, Guava
April- Cherimoya/Atemoya, Guava
May- Dragon Fruit, Wax Jambu, Cherries, White Sapote, Cherimoya/Atemoya
June- Dragon Fruit, Black Sapote, Fig, Wax Jambu, Cherries, White Sapote, Sapodilla
August- Dragon Fruit, Black Sapote, Fig, Wax Jambu, Cherries, Pepino, White Sapote, Jujube, Sapodilla
September- Dragon Fruit, Black Sapote, Guava, Fig, Wax Jambu, Cherries, Pepino, White Sapote, Jujube, Sapodilla
October- Dragon Fruit, Black Sapote, Guava, Fig, Persimmons, Pepino, White Sapote, Jujube, Cherimoya/Atemoya/Sugar Apple, Sapodilla,
November- Dragon Fruit, Guava, Fig, Persimmons, Cherimoya/Atemoya/Sugar Apple
December- Dragon Fruit, Guava, Persimmons, Cherimoya/Atemoya/Sugar Apple