Pondicherry on October is a good choice. Weather will be moderate. Not so sunny. Enjoy the beauty of rock beach, French Colony, Matrimandir.... .etc For Matrimandir you can get into the place but for especially into Matrimandir you gotta book prior. I gusee one shouldn't miss the beauty of Matrimandir and the magnificent architectural glory of it. Usually you could rent a bike that is affordable and stays you can get in a reasonable price.i would suggest two days stay would be a best option.
Shri Aurobindo Ghosh Ashram
Auroville
Paradise Beach
Gingee Fort
Sri Gokilambal Thirukameswar Temple
Basilica Of The Sacred Heart Of Jesus
Jawahar Toy Museum
Le Club
Promenade Beach
White Town
Chunnambar Boat House
Sita Cultural Centre
Serenity Beach
Goubert Avenue
Ousteri Lake
Old Lighthouse
Pondy Bazaar
Raj Niwas
French War Memorial
Pondicherry Botanical Garden
Rock Beach
Mahatma Gandhi Statue
The Pondicherry Museum
Bharati Government Park
Statue of Dupleix
Eglise de Notre Dame des Anges
Immaculate Conception Cathedral
Varadaraja Perumal Temple
Cluny Embroidery Centre
Manakula Vinayagar Temple
Kanniga Parameswari Temple
ISKCON Pondicherry