July 20, 2026 · Guaynabo, Puerto Rico
Sunrise in Guaynabo today is at 05:59. Day length is 13h 5m. See below for sunset, solar noon, dawn and dusk — all times calculated astronomically for Guaynabo's coordinates and updated daily.
Guaynabo lies at 18°N. Near the tropics, day length stays close to 12 hours year-round, with only minor variation between seasons.
Sunrise shifts earlier through spring and later through autumn — changing fastest near the equinoxes and barely at all near the summer and winter solstices. See the year chart to visualise how sunrise and sunset times shift month by month for Guaynabo.
The longest day in Guaynabo is around 13h 14m (around June 21). The shortest is around 11h 2m (around December 21). Days are currently getting shorter — losing about 1 minute per day.
| Month | Sunrise | Sunset | Day length |
|---|---|---|---|
| January | 07:00 | 18:08 | 11h 8m |
| February | 06:54 | 18:26 | 11h 32m |
| March | 06:34 | 18:35 | 12h 0m |
| April | 06:09 | 18:42 | 12h 32m |
| May | 05:52 | 18:51 | 12h 59m |
| June | 05:49 | 19:02 | 13h 13m |
| July | 05:57 | 19:05 | 13h 8m |
| August | 06:07 | 18:53 | 12h 46m |
| September | 06:13 | 18:29 | 12h 16m |
| October | 06:18 | 18:04 | 11h 45m |
| November | 06:31 | 17:48 | 11h 17m |
| December | 06:49 | 17:51 | 11h 2m |