NUS offered a variety of different social activities in terms of clubs, events, etc. Personally, I joined the dodgeball team as I had never played the sport before. I figured I would give it a try since it was something new to me and the exchange semester felt like the perfect opportunity for trying out new stuff.
As already mentioned, I had the luck to live on campus. This really made it extremely easy to socialize and meet other fellow exchangers but local students from Singapore, too. The on-campus accommodation is designed in a way that integrates exchangers with local students. For example, on my floor, we were 5-6 exchangers living with 10-15 Singaporeans. There are also common areas and lounges where students can hang out, watch a movie, play board games, etc.
Singapore is a great city. There is so much it can offer from food, culture, sightseeing, events, etc. it is easy and quite affordable to commute within the island. I recommend going to the parks where you can go for a trek through the jungle and see monkeys or huge lizards. It is quite common to see these animals even in more lively spaces. You also should not miss the must-do attractions like Gardens By The Bay, Marina Bay Sands, China Town, Little India, etc.
NUS is a great univerisity with a beautiful campus. There are multiple food courts all around the campus, a lot of sports facilities accessible to every student, and even its own natural history museum. There are always some events happening, so it is easy to meet new people. There is also a huge variety of clubs that you can join wher you can meet like-minded people.
The student life was definitely not at its best during the COVID-19 times as Singapore still had many restrictions, prohibitting gathering of groups of more than 5 people. However, it was still a fun time being there and meeting people from all over the world. Campus events were still going on with the required precautions taken.