The month of October corresponds to the beginning of the great monsoon. The climate throughout October in Sri Lanka is again influenced by the abundance of rains affecting most of the island's localities.
October in Colombo and the West Coast of the Island
The heat intensifies in Colombo, especially during the twenty days of the month. On the other hand, the rainfall regresses a little, yet remains very abundant.
October in Jaffna and the Extreme North of the Island
The monsoon affects the locality of Jaffna more than other localities. The mornings remain very wet throughout the month. However, the rest of the day is beautiful - especially since the heat is pleasant from morning to night.
October in Trincomalee and the Northeast of the Island
In spite of the strong heat felt in Trincomalee and its surroundings, the weather in Sri Lanka throughout October remains favorable because the rains occur only during the night.
October in Nuwara Eliya and the Central Plain
The heat is pleasant, but the rain is so abundant that every day experiences intense showers during both day and at night.