About Juncal, San Sebastian

Juncal, in San Sebastian, Puerto Rico, is home to roughly 1,200 people in the America/Puerto Rico time zone at 18.3°N latitude.

Recent weather here gives a sense of typical conditions: in 2025, Juncal recorded a mean annual temperature of 75°F, ranging from 61°F lows in March to 91°F highs in August, with about 51 inches of precipitation across the year.