Africa

In October, in the Atlantic coast of Morocco and in the Canary Islands the sun still shines, but from the second half of the month, every now and then some weather disturbances can pass. In the Red Sea the temperature begins to be acceptable, especially in the second half of the month. In northern Tanzania and in Kenya, the short rains season begins.
Where to go: Comoros, Egypt (Red Sea), Madagascar, Mauritius, Mayotte, Mozambique, Reunion

Asia

The Indian monsoon begins to retreat, and the cooler north-east monsoon takes its place, although it brings rainfall in the exposed slopes.
Where to go: Jordan (Red Sea), Israel (Red Sea)

North and Central America

It's still hot, muggy and rainy and with some risk of hurricanes in the Gulf of Mexico and in Central America.

Caribbean Sea

It 's still a hot and sultry month, with heavy showers. The risk of tropical storms and hurricanes is still quite high. The rains begin to be moderate even in the more sheltered Leeward Antilles.

Mediterranean Sea

By now autumn proceeds with rapid steps, and disturbances are frequent, with rains sometimes heavy, at least in the north-central part. In the first half of the month, however, a nice and warm weather lingers on in the southernmost and eastern part, from Djerba to Egypt, from Cyprus to Israel.

South America

It's the dry season in Guyana and in north-eastern Brazil.
Where to go: Brazil (Belem, Fortaleza, Natal, Recife, Salvador), Guyana (Georgetown), French Guiana, Suriname

Oceania

It's spring in the Southern Hemisphere, so the temperature begins to be acceptable in those islands around the Tropic which in the middle of winter were a bit cool.
Where to go: Fiji, Christmas Island, Cocos Islands, Kiribati, Nauru, Niue, New Caledonia, French Polynesia (Marquesas Islands), Solomon Islands, Tonga (centre and south), Vanuatu (centre and south)