Northern Lights dream meaning is explained below using 3 different sources. Each interpretation is shown with its source.

Interpretation 1 — DreamForth

To dream of the northern lights symbolizes youth, renewed energy, and vitality. You finally see the big picture about a relationship or situation you are facing. On the other hand, the northern lights may imply that although you know what you need to do, you may be too afraid or too lazy to make the right move.
Source: Dream Symbols and Analysis Author: DreamForth

Interpretation 2 — myjellybean

To dream about the Northern Lights represents renewed energy, vitality, and youth.

A situation or relationship is finally made clear to you. Alternatively, it indicates that you know what you need to do, but may be too lazy or too afraid to jump into action.

Source: My Dream Interpretation Author: myjellybean

Interpretation 3 — Joan Seaman - Tom Philbin

1. Indicates a wealth of energy, vitality.

2. A sudden inspiration, awareness, often in relationships.

Source: New American Dream Dictionary Author: Joan Seaman - Tom Philbin