Shorebite

Apra Harbor, Guam tide chart

Guam · near Apra Harbor (1 mi) · NOAA station 1630000 · times in local time (ChST)

Tides today, Monday, October 12

12 AM6 AM12 PM6 PM2:23 AM · 0.0 ft8:55 AM · 2.3 ft2:39 PM · 1.1 ft7:57 PM · 2.3 ft2.3 ft
  • Low 2:23 AM 0.0 ft
  • High 8:55 AM 2.3 ft
  • Low 2:39 PM 1.1 ft
  • High 7:57 PM 2.3 ft

Sunrise 6:12 AM · Sunset 6:05 PM · New moon (1%)

Fishing forecast

Hour by hour at Apra Harbor, Guam
80Excellent

Best times

12:00 AM–1:00 AM and 6:00 AM–7:00 AM

New moon (1% lit)

    Biting around here in October

    • Trevally In seasonReef edges on moving water
    • Bonefish In seasonFlats on the rising tide
    • Reef fish In seasonSlack tide on the reef

    General seasonal guide for Pacific Islands. Seasons, sizes and limits vary, so check your state rules before keeping fish.

    Weather and conditions at Apra Harbor, Guam

    Loading the National Weather Service forecast… Open it on weather.gov.

    Marine forecast: Guam Coastal Waters

    Loading the latest National Weather Service forecast… Open it on weather.gov.

    • Water temperature —
    • Water level now —
    Marine radio: weather channels and VHF

    NOAA Weather Radio

    • 162.400 MHz WX2 WXM85, Guam, GU (4 mi)

    To get alerts on a weather alert radio, program county code 066010 (Guam).

    VHF marine channels

    • Ch 16 Distress, safety and calling
    • Ch 9 Boater-to-boater calling
    • Ch 22A Coast Guard safety broadcasts
    • Ch 13 Bridge-to-bridge (big ships, drawbridges)
    • Ch 68, 69, 71, 72, 78A Recreational chat

    Weather radio broadcasts are continuous; VHF channels are the US standard. Local harbors and bridges may use others, so check your chart.

    Live readings from NOAA and the National Weather Service, loaded when you open this page.

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    Recent reports

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    Reports are from visitors and may be wrong. Inappropriate ones are removed.

    Tide times this week

    DayHigh and low tidesSunrise / sunsetMoon
    Mon Oct 12L 2:23 AM 0.0 ftH 8:55 AM 2.3 ftL 2:39 PM 1.1 ftH 7:57 PM 2.3 ft6:12 AM / 6:05 PMNew moon (1%)
    Tue Oct 13L 2:55 AM -0.1 ftH 9:42 AM 2.2 ftL 3:17 PM 1.3 ftH 8:19 PM 2.2 ft6:12 AM / 6:04 PMNew moon (3%)
    Wed Oct 14L 3:28 AM -0.2 ftH 10:30 AM 2.1 ftL 3:57 PM 1.4 ftH 8:42 PM 2.1 ft6:12 AM / 6:04 PMWaxing crescent (8%)
    Thu Oct 15L 4:03 AM -0.2 ftH 11:24 AM 2.0 ftL 4:42 PM 1.5 ftH 9:08 PM 2.0 ft6:12 AM / 6:03 PMWaxing crescent (15%)
    Fri Oct 16L 4:43 AM -0.1 ftH 12:29 PM 2.0 ftL 5:35 PM 1.6 ftH 9:39 PM 1.9 ft6:12 AM / 6:03 PMWaxing crescent (23%)
    Sat Oct 17L 5:31 AM 0.0 ftH 1:44 PM 1.9 ftL 6:48 PM 1.6 ftH 10:21 PM 1.8 ft6:13 AM / 6:02 PMFirst quarter (32%)
    Sun Oct 18L 6:27 AM 0.1 ftH 2:55 PM 1.9 ftL 8:19 PM 1.6 ftH 11:25 PM 1.7 ft6:13 AM / 6:02 PMFirst quarter (43%)

    Best fishing times at Apra Harbor, Guam

    The bite score (0 to 100) adds up what anglers watch most: moving water (a tide running harder than usual here scores higher), solunar periods (major periods of about two hours centred on the moon overhead or underfoot, minor periods of about an hour on moonrise and moonset), dawn and dusk light, and how close it is to the new or full moon. Best times are the stretches of the day scoring near that day's top.

    DayBite scoreBest timesMajor periodsMinor periods
    Mon Oct 1280 · Excellent12:00 AM–1:00 AM, 6:00 AM–7:00 AM11:51 PM–1:51 AM, 12:14 PM–2:14 PM6:50 AM–7:50 AM, 6:35 PM–7:35 PM
    Tue Oct 1365 · Good1:00 AM–2:00 AM, 6:00 AM–7:00 AM12:37 AM–2:37 AM, 1:01 PM–3:01 PM7:42 AM–8:42 AM, 7:18 PM–8:18 PM
    Wed Oct 1452 · Fair1:00 AM–3:00 AM, 6:00 AM–7:00 AM1:25 AM–3:25 AM, 1:50 PM–3:50 PM8:34 AM–9:34 AM, 8:03 PM–9:03 PM
    Thu Oct 1535 · Fair2:15 AM–4:15 AM, 2:40 PM–4:40 PM9:27 AM–10:27 AM, 8:52 PM–9:52 PM
    Fri Oct 1626 · Slow3:05 AM–5:05 AM, 3:31 PM–5:31 PM10:19 AM–11:19 AM, 9:43 PM–10:43 PM
    Sat Oct 1735 · Fair5:00 PM–6:00 PM3:56 AM–5:56 AM, 4:21 PM–6:21 PM11:09 AM–12:09 PM, 10:35 PM–11:35 PM
    Sun Oct 1842 · Fair6:00 PM–7:00 PM, 5:00 AM–6:00 AM4:46 AM–6:46 AM, 5:10 PM–7:10 PM11:56 AM–12:56 PM, 11:27 PM–12:27 AM

    A planning aid, not a guarantee. Wind, water clarity, bait and pressure changes matter too; the forecast above adds live wind and pressure when you open the page.

    Best daylight low tides in the next two weeks

    The lowest water that falls between sunrise and sunset, for tide pooling and beachcombing.

    1. 0.1 ft at 6:27 AM on Sunday, October 18
    2. 0.2 ft at 7:32 AM on Monday, October 19
    3. 0.2 ft at 8:36 AM on Tuesday, October 20
    4. 0.3 ft at 9:35 AM on Wednesday, October 21
    5. 0.4 ft at 10:26 AM on Thursday, October 22
    6. 0.5 ft at 11:12 AM on Friday, October 23

    Tide table: October 12 to November 10, 2026

    Full 2026 tide table Full 2027 tide table

    DayHigh and low tidesSunrise / sunset
    Mon Oct 12L 2:23 AM 0.0 ftH 8:55 AM 2.3 ftL 2:39 PM 1.1 ftH 7:57 PM 2.3 ft6:12 AM / 6:05 PM
    Tue Oct 13L 2:55 AM -0.1 ftH 9:42 AM 2.2 ftL 3:17 PM 1.3 ftH 8:19 PM 2.2 ft6:12 AM / 6:04 PM
    Wed Oct 14L 3:28 AM -0.2 ftH 10:30 AM 2.1 ftL 3:57 PM 1.4 ftH 8:42 PM 2.1 ft6:12 AM / 6:04 PM
    Thu Oct 15L 4:03 AM -0.2 ftH 11:24 AM 2.0 ftL 4:42 PM 1.5 ftH 9:08 PM 2.0 ft6:12 AM / 6:03 PM
    Fri Oct 16L 4:43 AM -0.1 ftH 12:29 PM 2.0 ftL 5:35 PM 1.6 ftH 9:39 PM 1.9 ft6:12 AM / 6:03 PM
    Sat Oct 17L 5:31 AM 0.0 ftH 1:44 PM 1.9 ftL 6:48 PM 1.6 ftH 10:21 PM 1.8 ft6:13 AM / 6:02 PM
    Sun Oct 18L 6:27 AM 0.1 ftH 2:55 PM 1.9 ftL 8:19 PM 1.6 ftH 11:25 PM 1.7 ft6:13 AM / 6:02 PM
    Mon Oct 19L 7:32 AM 0.2 ftH 3:48 PM 2.0 ftL 9:31 PM 1.5 ft6:13 AM / 6:01 PM
    Tue Oct 20H 12:58 AM 1.6 ftL 8:36 AM 0.2 ftH 4:26 PM 2.0 ftL 10:19 PM 1.3 ft6:13 AM / 6:00 PM
    Wed Oct 21H 2:38 AM 1.6 ftL 9:35 AM 0.3 ftH 4:55 PM 2.1 ftL 10:57 PM 1.1 ft6:13 AM / 6:00 PM
    Thu Oct 22H 4:02 AM 1.8 ftL 10:26 AM 0.4 ftH 5:19 PM 2.2 ftL 11:31 PM 0.8 ft6:13 AM / 5:59 PM
    Fri Oct 23H 5:08 AM 1.9 ftL 11:12 AM 0.5 ftH 5:41 PM 2.3 ft6:14 AM / 5:59 PM
    Sat Oct 24L 12:03 AM 0.5 ftH 6:05 AM 2.1 ftL 11:56 AM 0.6 ftH 6:04 PM 2.4 ft6:14 AM / 5:58 PM
    Sun Oct 25L 12:37 AM 0.2 ftH 6:58 AM 2.2 ftL 12:40 PM 0.8 ftH 6:29 PM 2.4 ft6:14 AM / 5:58 PM
    Mon Oct 26L 1:11 AM -0.1 ftH 7:48 AM 2.3 ftL 1:23 PM 1.0 ftH 6:55 PM 2.4 ft6:14 AM / 5:58 PM
    Tue Oct 27L 1:49 AM -0.4 ftH 8:39 AM 2.4 ftL 2:08 PM 1.2 ftH 7:25 PM 2.4 ft6:15 AM / 5:57 PM
    Wed Oct 28L 2:31 AM -0.6 ftH 9:34 AM 2.4 ftL 2:56 PM 1.4 ftH 7:58 PM 2.4 ft6:15 AM / 5:57 PM
    Thu Oct 29L 3:16 AM -0.7 ftH 10:33 AM 2.4 ftL 3:47 PM 1.6 ftH 8:35 PM 2.3 ft6:15 AM / 5:56 PM
    Fri Oct 30L 4:07 AM -0.7 ftH 11:42 AM 2.3 ftL 4:46 PM 1.6 ftH 9:18 PM 2.2 ft6:15 AM / 5:56 PM
    Sat Oct 31L 5:04 AM -0.6 ftH 12:58 PM 2.2 ftL 5:59 PM 1.7 ftH 10:12 PM 2.1 ft6:16 AM / 5:56 PM
    Sun Nov 1L 6:07 AM -0.5 ftH 2:11 PM 2.2 ftL 7:27 PM 1.6 ftH 11:23 PM 1.9 ft6:16 AM / 5:55 PM
    Mon Nov 2L 7:15 AM -0.2 ftH 3:10 PM 2.2 ftL 8:52 PM 1.4 ft6:16 AM / 5:55 PM
    Tue Nov 3H 12:58 AM 1.8 ftL 8:24 AM 0.0 ftH 3:56 PM 2.2 ftL 10:00 PM 1.1 ft6:17 AM / 5:55 PM
    Wed Nov 4H 2:47 AM 1.7 ftL 9:30 AM 0.2 ftH 4:33 PM 2.3 ftL 10:53 PM 0.8 ft6:17 AM / 5:54 PM
    Thu Nov 5H 4:24 AM 1.8 ftL 10:29 AM 0.5 ftH 5:04 PM 2.3 ftL 11:38 PM 0.4 ft6:17 AM / 5:54 PM
    Fri Nov 6H 5:40 AM 1.9 ftL 11:23 AM 0.7 ftH 5:32 PM 2.3 ft6:18 AM / 5:54 PM
    Sat Nov 7L 12:18 AM 0.1 ftH 6:41 AM 2.0 ftL 12:12 PM 0.9 ftH 5:57 PM 2.3 ft6:18 AM / 5:53 PM
    Sun Nov 8L 12:54 AM -0.1 ftH 7:33 AM 2.1 ftL 12:57 PM 1.1 ftH 6:22 PM 2.3 ft6:18 AM / 5:53 PM
    Mon Nov 9L 1:26 AM -0.3 ftH 8:19 AM 2.1 ftL 1:41 PM 1.2 ftH 6:46 PM 2.2 ft6:19 AM / 5:53 PM
    Tue Nov 10L 1:57 AM -0.4 ftH 9:01 AM 2.1 ftL 2:22 PM 1.4 ftH 7:10 PM 2.1 ft6:19 AM / 5:53 PM

    Heights are in feet above mean lower low water (MLLW), the zero line on most US nautical charts. A minus height means the water drops below that line.

    Around Apra Harbor, Guam

    Beaches

    Boat ramps

    Marinas

    Fishing piers and docks

    Distances from the tide station. Places from © OpenStreetMap contributors; links open in Google Maps.

    Fish in the waters around Apra Harbor, Guam

    40 kinds of fish, sharks and rays have been recorded within 15 km (about 9 miles) of this spot, most often Bullethead Parrotfish, Ocellate Damselfish, Brown Surgeonfish. The bar shows how many records each has.

    • Bullethead Parrotfish Chlorurus spilurusSalt water · 587 records
    • Ocellate Damselfish Pomacentrus vaiuliSalt water · 583 records
    • Brown Surgeonfish Acanthurus nigrofuscusSalt water · 478 records
    • Striated Surgeonfish Ctenochaetus striatusSalt water · 371 records
    • Tracey's Damselfish Chrysiptera traceyiSalt water · 368 records
    • Fivestripe Wrasse Thalassoma quinquevittatumSalt water · 311 records
    • Darkfin Hind Cephalopholis urodetaSalt water · 275 records
    • Orangespine Unicornfish Naso lituratusSalt water · 248 records
    • Jewel Damsel Plectroglyphidodon lacrymatusSalt water · 242 records
    • Bluestreak Cleaner Wrasse Labroides dimidiatusSalt water · 193 records
    • Ringtail Maori Wrasse Oxycheilinus unifasciatusSalt water · 190 records
    • Striped Triggerfish Balistapus undulatusSalt water · 182 records
    • Biocellate Wrasse Halichoeres biocellatusSalt water · 181 records
    • Surge Damselfish Chrysiptera brownriggiiSalt water · 174 records
    • Schlegel's Parrotfish Scarus schlegeliSalt water · 161 records
    • Arc-eye Hawkfish Paracirrhites arcatusSalt water · 147 records
    • Pacific Gregory Stegastes fasciolatusSalt water · 143 records
    • Palenose Parrotfish Scarus psittacusSalt water · 142 records
    • Checkerboard Wrasse Halichoeres hortulanusSalt water · 138 records
    • Leopard Wrasse Macropharyngodon meleagrisSalt water · 136 records
    • Manybar Goatfish Parupeneus multifasciatusSalt water · 136 records
    • Moorish Idol Zanclus cornutusSalt water · 126 records
    • Forktail Blenny Meiacanthus atrodorsalisSalt water · 124 records
    • Sling-jaw Wrasse Epibulus insidiatorSalt water · 120 records
    • Spotted Toby Canthigaster solandriSalt water · 116 records
    • Scythe Triggerfish Sufflamen bursaSalt water · 110 records
    • Blueband Goby Valenciennea strigataSalt water · 108 records
    • Goldrim Surgeonfish Acanthurus nigricansSalt water · 107 records
    • Guam Damsel Pomachromis guamensisSalt water · 103 records
    • Speckled Butterflyfish Chaetodon citrinellusSalt water · 103 records
    • Clouded Damselfish Amblyglyphidodon curacaoSalt water · 102 records
    • Halfmoon Triggerfish Sufflamen chrysopterumSalt water · 102 records
    • Blackbar Devil Plectroglyphidodon dickiiSalt water · 96 records
    • Pinktail Triggerfish Melichthys viduaSalt water · 96 records
    • Red-spot Wrasse Stethojulis bandanensisSalt water · 94 records
    • Lemonpeel Angelfish Centropyge flavissimaSalt water · 91 records
    • Yellow Wrasse Thalassoma lutescensSalt water · 85 records
    • Reticulated Butterflyfish Chaetodon reticulatusSalt water · 84 records
    • Latticed Sandperch Parapercis clathrataSalt water · 77 records
    • Tripletail Wrasse Cheilinus trilobatusSalt water · 75 records

    Records from GBIF datasets released under CC0 or CC BY 4.0 (museum collections, surveys and community sightings). It shows what has been found here, not a complete list. Check your state rules before keeping fish.

    About the tides at Apra Harbor, Guam

    Apra Harbor, Guam gets two high tides and two low tides almost every day, and the two highs are close in height. Over the next month the water typically rises or falls about 1.5 ft between a high and the next low.

    The biggest swings in this window come around Thursday, October 29, when the day's range reaches 3.1 ft, and again around Tuesday, November 10 (2.6 ft). Those spring tides follow the new and full moon by a day or two. The calmest day is Monday, October 19, with only 1.8 ft between the day's highest and lowest water.

    The lowest tide of the month is -0.7 ft at 3:16 AM on Thursday, October 29. There are 18 minus tides (lows below the chart's zero line) in this window: the best times for tide pools, clamming and walking the flats.

    The highest predicted tide is 2.4 ft at 6:55 PM on Monday, October 26. Onshore wind or a storm can push the real water level above that.

    This is a reference (harmonic) station: NOAA predicts its tides directly from years of measured water levels here, which makes it among the most reliable predictions on the coast.

    Station details

    Nearby tide stations

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