Arecibo, Puerto Rico Sunset Time Today

Sunrise time in Arecibo

The sun rises in Arecibo at 6:05 AM today and at 6:05 AM tomorrow (the same time as today).

First light comes before the sun itself: civil twilight — the blue-hour glow already bright enough to see by — begins around 5:35 AM, roughly half an hour ahead of sunrise.

For photographers, the morning golden hour — the warm, low-angle light just after the sun clears the horizon — runs from about 6:05 AM to 7:05 AM.

Arecibo daylight month by month

Sunrise, sunset, and total daylight for the first of each month in 2026, computed from Arecibo’s coordinates in local time. The line traces how the day stretches toward summer and contracts toward winter.

Arecibo’s longest and shortest days

Arecibo’s longest day falls on June 21, 2026 with 13h 14m of daylight; the shortest is December 21, 2026 with just 11h 1m. The two equinoxes, when day and night run nearly equal, sit in between.

How fast Arecibo gains and loses daylight

The pace of change is not steady. Each month gains or loses a different amount, fastest around the equinoxes and nearly frozen at the solstices. The rate below is the daily change mid-month; the net is the full swing across the month.

Arecibo golden hour & blue hour by season

Golden hour is the warm, low-sun light; blue hour is the cooler twilight that brackets it. These windows come from Arecibo’s true solar geometry — the sun’s altitude, not a fixed hour — so they stretch toward the solstices and run longer than the rule-of-thumb hour.

Daylight saving time in Arecibo

Arecibo does not observe daylight saving time — its clocks stay on UTC−4 year round, so sunrise and sunset never jump an hour in spring or fall.

Why sunset time shifts in Arecibo

Sunset drifts through the year with Earth’s ~23.4° axial tilt — see the full daylight explainer.

In Arecibo, the longest day carries about 13h 14m of daylight and the shortest just 11h 1m — a swing of roughly 2h 13m between the June and December solstices. The farther a place sits from the equator, the wider that gap; the pace also isn’t steady, moving fastest near the equinoxes and barely at all near the solstices. Every figure here is computed from the sun’s position for Arecibo’s exact coordinates, in local time.

More for Arecibo

See the full Arecibo, PR weather forecast — hour-by-hour outlook, NOAA radar, satellite, and air quality.