NOAA station 9759938, Puerto Rico
Mona Island tide chart
Friday, October 30Atlantic Standard Time
NOAA harmonic station (NOAA’s page for this station, opens in a new tab)Falling, about 0.5 ft now
As of 9:39 PM AST
- Next
- Low -0.1 ft at 3:32 AMtomorrow, in 5h 53m
- Then
- High 1.0 ft at 4:59 PMtomorrow, in 19h 20m
Low, passed
2:45 AM
-0.2 ft
High, passed
4:05 PM
1.0 ft
The week ahead
This week’s tides at Mona Island
Every high and low for the next seven days, in feet above MLLW. The 30-day table below has the rest of the month.
| Day | Tide curve | Highs | Lows | Range |
|---|---|---|---|---|
| Fri, Oct 30Range 1.2 ft | 4:05 PM 1.0 ft | 2:45 AM -0.2 ft | 1.2 ft | |
| Sat, Oct 31Range 1.1 ft | 4:59 PM 1.0 ft | 3:32 AM -0.1 ft | 1.1 ft | |
| Sun, Nov 1Range 0.9 ft | 5:42 PM 0.9 ft | 4:21 AM 0.0 ft | 0.9 ft | |
| Mon, Nov 2Range 0.8 ft | 3:43 PM 0.9 ft | 5:11 AM 0.1 ft | 0.8 ft | |
| Tue, Nov 3Range 0.5 ft | 4:05 PM 0.8 ft | 6:03 AM 0.3 ft | 0.5 ft | |
| Wed, Nov 4Range 0.4 ft | 4:19 AM 0.6 ft10:01 AM 0.6 ft4:28 PM 0.8 ft | 12:42 AM 0.4 ft6:57 AM 0.5 ft12:02 PM 0.6 ft | 0.4 ft | |
| Thu, Nov 5Range 0.3 ft | 5:43 AM 0.7 ft10:06 AM 0.7 ft4:50 PM 0.7 ft | 12:51 AM 0.4 ft8:01 AM 0.7 ft1:37 PM 0.6 ft | 0.3 ft |
See this tide on Pathr’s chart. Free on iPhone and Android.
Mona Island tide table for the next 30 days
Every high and low for the next month, with the daily tidal range.
| Day | Highs | Lows | Range |
|---|---|---|---|
| Fri, Oct 30Range 1.2 ft | 4:05 PM 1.0 ft | 2:45 AM -0.2 ft | 1.2 ft |
| Sat, Oct 31Range 1.1 ft | 4:59 PM 1.0 ft | 3:32 AM -0.1 ft | 1.1 ft |
| Sun, Nov 1Range 0.9 ft | 5:42 PM 0.9 ft | 4:21 AM 0.0 ft | 0.9 ft |
| Mon, Nov 2Range 0.8 ft | 3:43 PM 0.9 ft | 5:11 AM 0.1 ft | 0.8 ft |
| Tue, Nov 3Range 0.5 ft | 4:05 PM 0.8 ft | 6:03 AM 0.3 ft | 0.5 ft |
| Wed, Nov 4Range 0.4 ft | 4:19 AM 0.6 ft10:01 AM 0.6 ft4:28 PM 0.8 ft | 12:42 AM 0.4 ft6:57 AM 0.5 ft12:02 PM 0.6 ft | 0.4 ft |
| Thu, Nov 5Range 0.3 ft | 5:43 AM 0.7 ft10:06 AM 0.7 ft4:50 PM 0.7 ft | 12:51 AM 0.4 ft8:01 AM 0.7 ft1:37 PM 0.6 ft | 0.3 ft |
| Fri, Nov 6Range 0.6 ft | 6:51 AM 0.8 ft | 12:50 AM 0.4 ft10:39 PM 0.2 ft | 0.6 ft |
| Sat, Nov 7Range 0.8 ft | 7:46 AM 0.9 ft | 11:09 PM 0.1 ft | 0.8 ft |
| Sun, Nov 8Range 1.0 ft | 8:33 AM 1.0 ft | 11:45 PM 0.0 ft | 1.0 ft |
| Mon, Nov 9 | 9:16 AM 1.0 ft | None | None |
| Tue, Nov 10Range 1.1 ft | 9:59 AM 1.0 ft | 12:23 AM -0.1 ft | 1.1 ft |
| Wed, Nov 11Range 1.1 ft | 10:44 AM 0.9 ft | 1:02 AM -0.2 ft | 1.1 ft |
| Thu, Nov 12Range 1.1 ft | 11:31 AM 0.9 ft | 1:41 AM -0.2 ft | 1.1 ft |
Show days 15 to 30Hide days 15 to 30 | |||
| Fri, Nov 13Range 0.9 ft | 12:24 PM 0.8 ft | 2:19 AM -0.1 ft | 0.9 ft |
| Sat, Nov 14Range 0.9 ft | 1:20 PM 0.8 ft | 2:57 AM -0.1 ft | 0.9 ft |
| Sun, Nov 15Range 0.9 ft | 2:10 PM 0.9 ft | 3:34 AM 0.0 ft | 0.9 ft |
| Mon, Nov 16Range 0.8 ft | 2:43 PM 0.9 ft | 4:09 AM 0.1 ft | 0.8 ft |
| Tue, Nov 17Range 0.5 ft | 3:04 PM 0.8 ft | 4:42 AM 0.3 ft | 0.5 ft |
| Wed, Nov 18Range 0.4 ft | 3:10 AM 0.4 ft3:20 PM 0.8 ft | 12:31 AM 0.4 ft5:11 AM 0.4 ft11:57 PM 0.4 ft | 0.4 ft |
| Thu, Nov 19Range 0.4 ft | 3:34 PM 0.7 ft | 11:49 PM 0.3 ft | 0.4 ft |
| Fri, Nov 20Range 0.5 ft | 9:35 AM 0.7 ft3:46 PM 0.6 ft | 1:38 PM 0.6 ft11:12 PM 0.2 ft | 0.5 ft |
| Sat, Nov 21Range 0.7 ft | 7:39 AM 0.8 ft | 10:32 PM 0.1 ft | 0.7 ft |
| Sun, Nov 22Range 1.0 ft | 8:07 AM 0.9 ft | 10:59 PM -0.1 ft | 1.0 ft |
| Mon, Nov 23Range 1.2 ft | 8:46 AM 1.0 ft | 11:36 PM -0.2 ft | 1.2 ft |
| Tue, Nov 24 | 9:29 AM 1.0 ft | None | None |
| Wed, Nov 25Range 1.3 ft | 10:14 AM 1.0 ft | 12:17 AM -0.3 ft | 1.3 ft |
| Thu, Nov 26Range 1.3 ft | 11:01 AM 1.0 ft | 12:59 AM -0.3 ft | 1.3 ft |
| Fri, Nov 27Range 1.3 ft | 11:49 AM 1.0 ft | 1:41 AM -0.3 ft | 1.3 ft |
| Sat, Nov 28Range 1.2 ft | 12:35 PM 1.0 ft | 2:24 AM -0.2 ft | 1.2 ft |
Conditions at Mona Island
From the National Weather Service forecast for this spot, with today's sunrise and sunset.
Any date, past or future
Plan another date
Pick a date to see the tide curve, the highs and lows and sunrise and sunset at Mona Island.
Choose a date above to draw its tide chart.
About Mona Island tides
Mona Island is a NOAA harmonic tide station (9759938): its predictions come from the tidal constituents NOAA derived from water levels measured at this spot. Heights are in feet above MLLW (Mean Lower Low Water), the datum of US nautical charts, so they line up with charted depths.
In the next 30 days, Mona Island has two highs and two lows on 1 day, one high and one low on 23 days, three turns on 1 day and some other count on 5 days, and the daily range runs from 0.3 to 1.3 ft. That is a mostly diurnal tide: one high and one low on most days.
Use the curve above to time a harbor entrance, a beach walk, fishing a moving tide or clearing a shallow bar, and remember that wind, air pressure and river flow can push the real water level above or below the prediction. The daily tidal range in the tables shows how much water moves each day: bigger ranges around the new and full moon mean stronger currents.
Frequently asked
What time is high tide in Mona Island today?+
Today (Friday, October 30), high tide at Mona Island is at 4:05 PM (1.0 ft). Heights are referenced to MLLW (Mean Lower Low Water).
What time is low tide in Mona Island today?+
Today, low tide at Mona Island is at 2:45 AM (-0.2 ft).
What tidal datum do these Mona Island tide heights use?+
All heights are given in feet relative to MLLW (Mean Lower Low Water), the standard NOAA chart datum for US tidal waters. A tide of 0.0 ft equals the chart datum; negative tides fall below it.
How accurate are these tide predictions?+
Mona Island is a NOAA harmonic station (9759938), so these are NOAA's harmonic predictions for this spot, which are very accurate for the astronomical tide. Real water levels can still differ with wind, air pressure and river flow, so check conditions before you get underway.
Pathr nautical charts
Explore tides on the chart
Find NOAA tide prediction stations on Pathr’s nautical chart. Select a station for today’s high and low tides, or explore another spot nearby.
