Weather in بورتوريكو in سبتمبر
Country-wide climate normals across 15 cities in بورتوريكو.
How Hot Is بورتوريكو in سبتمبر?
بورتوريكو bakes evenly in September — highs around 31°C are typical from Fajardo all the way to Guaynabo, with very little regional variation. Lows sit around 25°C even overnight, and the country's small geographic footprint means there are no significant climate pockets. Expect uniform heat day and night.
Sunshine in بورتوريكو in سبتمبر
بورتوريكو sees limited sun in September: just 1.0h a day in San Juan, with heavy cloud cover common across most regions. Daylight runs from 6:10 am to 6:25 pm, but persistent grey skies and overcast stretches mean direct sunlight is genuinely scarce. Many days pass without any prolonged sunny spells.
Does It Rain In بورتوريكو In سبتمبر?
Heavy seasonal rains saturate بورتوريكو in September — San Juan averages 208mm of rain across 23 days, with downpours an almost daily feature. The pattern is consistent across most regions, particularly along monsoon-affected coasts. Expect torrential afternoon storms followed by humid heat.
Is بورتوريكو Humid In سبتمبر?
بورتوريكو is enveloped in tropical-thick humidity through September: San Juan averages 78%, and most of the country tracks similarly. The constant moisture makes warm temperatures feel substantially hotter, and even nights bring limited cooling. Light cotton clothing is essential.
Wind In بورتوريكو In سبتمبر
Light breezes are typical across بورتوريكو in September: 18 kph in San Juan, with similar gentle wind conditions in most regions. The air moves enough to keep things fresh on warm days but not enough to be disruptive. Coastal cities may see slightly more.
Cloud Cover In بورتوريكو In سبتمبر
بورتوريكو's September is dominated by overcast skies: San Juan averages 78% cloud cover, with similar grey persistence across the country. Days feel dim and soft-lit, with little break in the cloud deck.