In September, Karlstad typically sees daytime highs of 15.4°C and overnight lows around 6.8°C. Compared to the annual average high of 9.5°C, September runs +5.9°C.
September in Karlstad averages a daytime high of 15.4°C and an overnight low of 6.8°C.
September runs +5.9°C compared to Karlstad's annual average high of 9.5°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 15.4°C and cooler evenings around 6.8°C.