Thus far, the only other situations shown to increase a bender's ability are:
- The full moon strengthens waterbending. This could arguably fall under the moon simply being out, but this is the pinnacle of that circumstance. (i.e. bloodbending can only be performed under a full moon)
- Waterbending is greatly increased while in the Spirit Oasis. Water from the Oasis also has unique properties that make it a powerful tool.