In June, San Sebastian typically sees daytime highs of 20.7°C and overnight lows around 13.5°C. Compared to the annual average high of 17.1°C, June runs +3.6°C.
June in San Sebastian averages a daytime high of 20.7°C and an overnight low of 13.5°C.
June runs +3.6°C compared to San Sebastian's annual average high of 17.1°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 20.7°C and cooler evenings around 13.5°C.