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Plan your aurora trip to Tromsø

Which nights in the next four weeks give the best odds? See how active the sun is expected to be, how dark it gets and how much the moon lights the sky, night by night.

The next weeks in Tromsø

Tromsø lies under the auroral oval: most nights have good conditions from space, so the clouds decide. Plan several nights to raise the odds of a clear one.

Night by night

29 Oct–21 Nov

  • Good conditions18 nights
  • Possible6 nights
  • Weak0 nights
To the calendar

Best stretch

30 Oct–1 Nov

Good conditions

  • Kp≈ 5.0
  • Moon 61 % lit
  • Darkness12 hours

Stretch 2

8 Nov–10 Nov

Good conditions

  • Kp≈ 3.5
  • Moon 1 % lit
  • Darkness12 hours

Stretch 3

16 Nov–18 Nov

Good conditions

  • Kp≈ 4.0
  • Moon 56 % lit
  • Darkness12 hours

24 nights in Tromsø

Kp ≈ from NOAA’s 27-day outlook
  1. 29 OctTonightPossibleKp 2.360 %
  2. 30GoodKp 5.0100 %
  3. 31GoodKp 4.544 %
  4. 1 NovGoodKp ≈3.597 %
  5. 2GoodKp ≈2.5100 %
  6. 3PossibleKp ≈2.0100 %
  7. 4GoodKp ≈2.599 %
  8. 5GoodKp ≈3.0100 %
  9. 6GoodKp ≈3.0100 %
  10. 7GoodKp ≈2.5
  11. 8GoodKp ≈3.0
  12. 9GoodKp ≈3.5
  13. 10GoodKp ≈3.0
  14. 11GoodKp ≈3.0
  15. 12GoodKp ≈2.5
  16. 13PossibleKp ≈2.0
  17. 14PossibleKp ≈2.0
  18. 15GoodKp ≈2.5
  19. 16GoodKp ≈3.5
  20. 17GoodKp ≈4.0
  21. 18GoodKp ≈3.5
  22. 19GoodKp ≈2.5
  23. 20PossibleKp ≈2.0
  24. 21PossibleKp ≈2.0
  • Good conditions
  • Possible
  • Weak
  • Best stretches
  • The moon that night
  • Cloud (the first nights, MET)
  • Kp ≈: estimate from NOAA’s 27-day outlook

Compare with well-known destinations

Aurora in Tromsø tonight

Once you are there: the chance hour by hour tonight and for the next seven nights, with the cloud cover.

To the night forecast

How it is worked out

The first nights use NOAA’s Kp forecast, then NOAA’s 27-day outlook, built on the sun turning every 27 days. Eruptions on the sun, which bring the biggest aurora nights, cannot be seen that far ahead.

«Good conditions» means the activity is well above what the place needs, also with the moon up; «possible» that it just reaches it. Clouds are not included four weeks ahead: on the night, they decide.

Every destination in the trip planner →

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