September to November is generally a very good time to visit Jordan, although autumn is often indistinct. Temperatures start to cool off at the end of September, and the first signs of rain appear towards the end of October. It is a perfect time to visit Aqaba, with warm waters accommodating turtles and eagle rays.
Not recommended to go to the north, as humidity peaks before the rains arrive. Everywhere else, the weather is pleasantly warm. An ideal time for camping, relaxing at vineyards, or hiking and wildlife viewing.
Between August and October is possibly the best time to visit the Amazon and Pantanal. It is still fairly dry in the south, but it can be cool in the evenings in Rio. It dries up in the north, and remains warm.
September and October are popular months to visit with the heat of the summer receding and harvest time in progress meaning markets are awash with fresh produce.