In June, San Juan typically sees daytime highs of 31.3°C and overnight lows around 24.1°C. Compared to the annual average high of 30.4°C, June runs +0.9°C.
June in San Juan averages a daytime high of 31.3°C and an overnight low of 24.1°C.
June runs +0.9°C compared to San Juan's annual average high of 30.4°C, ranking #3 of 12 months by warmth.
Plan for daytime highs near 31.3°C and cooler evenings around 24.1°C.