Guánica tides
Today, Thursday, October 29, 2026 · local time (AST) · Guánica, Puerto Rico- 11:09 am1.1 ft
- 2:53 am-0.1 ft
- Tide now
- 0.0 ft ↓ falling · low 2:53 am (-0.1 ft)
- Coefficient
- 115 · big spring tides
- Range today
- 1.2 ft
Today there is high tide at 11:09 am (1.1 ft) and low tide at 2:53 am. Tide coefficient 115. Right now the tide is falling toward the low tide at 2:53 am. In Guánica the tide is mixed, mainly diurnal: on many days there is only one high and one low tide. The next spring tides: from November 9 to 11.
Today's high and low tides
- ▼ Next low tide 2:53 am -0.1 ft
- ▲ High tide 11:09 am 1.1 ft · coef. 115
↓ Falling The tide is falling. 1 h 35 min to low tide at 2:53 am.
Tide coefficient 115 for the 11:09 am high tide. Big spring tides. The water rises and falls 1.2 ft between the highest high and the lowest low: a large range for this place. 70 is an average tide here; 90 and above means spring tides; below 45, neap tides. What is the tide coefficient?
Heights above mean lower low water (MLLW), the zero of US nautical charts. Astronomical prediction: wind and air pressure can raise or lower the water by a few inches, and more in a storm. Not for navigation.
Tides for the next 7 days
| Day | Sun | Tide 1 | Tide 2 | Tide 3 | Tide 4 | Coef. | Moon | Major periods | Activity |
|---|---|---|---|---|---|---|---|---|---|
| Today, Thu 29 | 6:26 am · 5:57 pm | Low tide 2:53 am · -0.1 ft | High tide 11:09 am · 1.1 ft | — | — | Coef. 115 | 84% | Major periods 2:05 am · 2:37 pm | Medium |
| Fri 30 | 6:26 am · 5:56 pm | Low tide 3:37 am · -0.1 ft | High tide 12:03 pm · 1.1 ft | — | — | Coef. 111 | 74% | Major periods 3:10 am · 3:41 pm | Medium |
| Sat 31 | 6:26 am · 5:56 pm | Low tide 4:29 am · 0.0 ft | High tide 12:59 pm · 1.0 ft | — | — | Coef. 101 | 63% | Major periods 4:12 am · 4:41 pm | Medium |
| Sun 1 | 6:27 am · 5:55 pm | Low tide 5:37 am · 0.1 ft | High tide 1:59 pm · 1.0 ft | — | — | Coef. 85 | Last quarter | Major periods 5:10 am · 5:37 pm | Medium |
| Mon 2 | 6:27 am · 5:55 pm | Low tide 7:16 am · 0.3 ft | High tide 2:56 pm · 0.9 ft | Low tide 10:38 pm · 0.5 ft | — | Coef. 64 | 41% | Major periods 6:03 am · 6:28 pm | Medium |
| Tue 3 | 6:28 am · 5:54 pm | High tide 2:24 am · 0.6 ft | Low tide 9:14 am · 0.4 ft | High tide 3:41 pm · 0.9 ft | Low tide 11:04 pm · 0.4 ft | Coef. 53 | 31% | Major periods 6:52 am · 7:15 pm | Medium |
| Wed 4 | 6:28 am · 5:54 pm | High tide 4:24 am · 0.7 ft | Low tide 10:51 am · 0.5 ft | High tide 4:16 pm · 0.8 ft | Low tide 11:34 pm · 0.3 ft | Coef. 29 | 21% | Major periods 7:37 am · 8:00 pm | Medium |
▲ high tide · ▼ low tide · heights above MLLW. Major periods: start time; they last 2 hours. Activity: based on the moon phase and the solunar periods.
Tide coefficient and range in October
The biggest tides of the month come on October 29 (coefficient 115, 1.2 ft range). The smallest, on October 8 (coefficient 20, 0.4 ft).
Type of tide
In Guánica the tide is mixed, mainly diurnal: on many days there is only one high and one low tide. Types of tides
2026 extremes: the highest tide of the year is on October 28 (1.1 ft) and the lowest, on May 18 (-0.4 ft).
Reference levels
- Highest astronomical tide (HAT)1.2 ft
- Mean higher high water (MHHW)0.8 ft
- Mean high water (MHW)0.8 ft
- Mean sea level (MSL)0.4 ft
- Mean low water (MLW)0.1 ft
- Mean lower low water (MLLW)0.0 ft
- Lowest astronomical tide (LAT)-0.4 ft
Heights above mean lower low water (MLLW), the zero of US nautical charts.
Questions about the tides in Guánica
What time is high tide today in Guánica?
High tide today is at 11:09 am (1.1 ft). Low tide is at 2:53 am.
What time is high tide tomorrow in Guánica?
On Friday, October 30, high tide at 12:03 pm and low tide at 3:37 am.
What is today's tide coefficient?
115: big spring tides. 70 is an average tide here; 90 and above means spring tides; below 45, neap tides.
When are the next spring tides?
From November 9 to 11, after the new or full moon.
How many tides a day are there in Guánica?
The tide is mixed, mainly diurnal: on many days there is only one high and one low tide. Each high tide comes about 50 minutes later than the day before.
What are the heights measured from?
From mean lower low water (MLLW), the zero of US nautical charts. That is why a low tide can be negative: that day the water drops below that zero.
Can I use these tides for navigation?
No. They are astronomical predictions for planning fishing and outings; for navigation use official publications and nautical charts.
More about Guánica today
Tides near Guánica
- María Antonia ▲ 10:54 am
- La Parguera ▲ 10:57 am
- Mayagüez ▲ 11:09 am
- Aguada ▲ 10:39 am
- Corcovado ▲ 10:55 am
- Barceloneta ▲ 11:30 am
Each place with its own tide station; next to it, the time of its first high tide today.
Learn more
Guánica has no station of its own, so we use the tide at Boqueron (NOAA), 18 mi away. On the open coast the difference is usually a few minutes and inches; inside estuaries, rivers and enclosed bays it can be much larger. Station data attribution: Slackwater database (https://github.com/openwatersio/slackwater-database)