History:

Forced migrations could also be a factor, although this is less clear without more specific historical information. This might involve displacement due to conflicts, political unrest, or resettlement policies by governing authorities. Following the geographic distribution of this surname in historical records, like census data, land records, and migration documents, could show clear patterns and explain the specific reasons behind its spread and development.

The gotras associated with this surname are angiras, danoli, kasyapa, mamilla and raghukula. The Kuldevtas associated with this surname are bhavani, khandoba and tirupati balaji.

Description:

The surname Tammali is mainly found among communities in the coastal areas of Karnataka and Goa, India. The religion associated with TAMMALI surname is hinduism. The MotherTounge associated with this surname is telugu.
Its particularly connected to the Mogaveera community, which has a long history as a fishing community. Within the Mogaveera community, surnames often point to the jobs their ancestors held or the villages they came from. Intermarriage and migration along the Konkan coast have probably spread this surname among similar sub-communities.

My search didnt reveal any connections between this surname and known celebrations or observances.

The surname has a few variations: Thammali, Thammallee, and Tammalle.