In October, Tromso typically sees daytime highs of 5.5°C and overnight lows around -0.5°C. Compared to the annual average high of 5.9°C, October runs -0.4°C.
October in Tromso averages a daytime high of 5.5°C and an overnight low of -0.5°C.
October runs -0.4°C compared to Tromso's annual average high of 5.9°C, ranking #6 of 12 months by warmth.
Plan for daytime highs near 5.5°C and cooler evenings around -0.5°C.