A major cultural events held during the month of January is the duruthu parahara, which is conducted by an ancient temple in kelaniya (Which is known as the Temple of Kelaniya situated in the suburbs of Colombo). This parahara is a colorful display, consisting of various acts, which epitomize the richness of cultural diversity found in sri lanka. This event coincides with lord buddha's visit to this country. (around 2500 BC)
Another important festival held during this month would be the Thaipongal festival, which is observed by hindus who worship sun god. This is held on the 14th of January

It is belived that lord Buddha was born, attained the state of enlightenment and attained nibbna (Passed away), all in a specific day during this month. This day is recognized as the Vesak full moon poya day. UN officially recognizes this day as a holiday.

Vasak day is marked with religious observations, By Buddhists throughout the country. These religious observations include observing sil (adhering to the concepts of dhamma , ie- preaching of Buddha), Offering flowers to the relicts and statues of lord buddha Apart from that, Buddhists pay homage to lord Buddha by illuminating various types of lanterns, Pandols, Etc. During the night of the vesak day above mentioned lighting decorate the urban and most of rural areas making it a most pleasant sight.

Poson is an important month to sri lankan Buddhists. It is during one such month, centuries ago Buddhism was introduced to sri lanka. History says that a disciple of Buddha by the name of mahinda, Shed the light of Buddhism to sri lanka.

This was done as an act of good will towards Sri Lanka initiated by the great emperor "Asoka" of India. Who sent his son mahinda thera (Thera= Buddhist Deciple ) to Sri Lanka
According to archeologists "Mihinthele" is the Place where Mahinda met King Devanang Piyatissa (Who was the king of Sri Lanka at that time). Today "Mihinthele" is a hive of religious activity during the month of poson. Though poson is not meted out with the same importance of vasak, it is still an event, which calls for attention.