Granite Rock tide times

smith Sl., s.f.bay, CAsmith Sl., s.f.bayNOAA 9414513Saturday, October 10 · PDTSat Oct 10Predictions onlyChange station
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Today at Granite Rock the next low tide is at 6:50 AM (1.3 ft) and the next high tide is at 12:45 PM (8.7 ft). Tomorrow's first low is at 7:25 AM. Spring tides peak tomorrow, so expect bigger highs and lower lows.

Estimated now
3.1 ft ↓
Falling 1.5 ft per hour
Next low
6:50 AM
In 2 h 14 min · 1.3 ft
Next high
12:45 PM
In 8 h 09 min · 8.7 ft
Tide range today
8.5 ft
Spring tides Sunday
Predictions only. No live gauge at this station.

Today's tide

Estimated curve between high and low timesNightHeight above MLLW
0 ft2 ft4 ft6 ft8 ftNOW 4:3612:44 AMHigh · 7.5 ft6:50 AMLow · 1.3 ft12:45 PMHigh · 8.7 ft7:34 PMLow · 0.1 ft
Tide chart for Granite Rock, today. High 7.5 ft at 12:44 AM, low 1.3 ft at 6:50 AM, high 8.7 ft at 12:45 PM, low 0.1 ft at 7:34 PM.

Heights and times are estimated from San Francisco, San Francisco Bay using NOAA offsets. Only the high and low points are official; the curve between them is drawn by us.

Today's tides

ft above MLLW
  • High12:44 AM7.5 ft
  • Low6:50 AM1.3 ft
  • High12:45 PM8.7 ft
  • Low7:34 PM0.1 ft
Tide times for Granite Rock
TideTimeHeight
High12:44 AM7.5 ft
Low6:50 AM1.3 ft
High12:45 PM8.7 ft
Low7:34 PM0.1 ft
Sunrise
7:13 AM
First light 6:47
Sunset
6:40 PM
Last light 7:06
Moon
0%
New moon
Tide range
8.5 ft
Spring tides Sun

Best windows today

Plan the week →
  • Fishing
    7:00 to 8:00 AM

    Dawn light with the incoming tide around the 12:45 PM high. Second window 6:00 to 7:00 PM.

  • Tidepools & shelling
    6:00 to 7:00 PM

    Today's lowest water is at 7:34 PM, before sunrise or after sunset. Best daylight window is 6:00 to 7:00 PM.

  • Surfing
    9:00 to 10:00 AM

    Mid tide from 9:00 to 10:00 AM. No wind sensor at this station.

  • Shallow boat launch
    Avoid 6:00 to 8:00 AM

    Under 1.5 ft around low water. Launch before 6:00 AM.

Plan the week

Moving water around the turn often fishes best. Local species and bait matter more than any chart.

Next 7 days

October calendar →
High and low tides for the next 7 days, heights in ft
DayTide 1Tide 2Tide 3Tide 4Range, ft
TodaySat 10H12:44a7.5L6:50a1.3H12:45p8.7L7:34p0.18.5 spring tide
SunOct 11H1:35a7.3L7:25a1.8H1:13p8.7L8:14p−0.18.8 spring tide
MonOct 12H2:27a7.0L8:01a2.3H1:41p8.6L8:52p−0.18.7 spring tide
TueOct 13H3:19a6.7L8:37a2.8H2:09p8.4L9:32p0.08.5 spring tide
WedOct 14H4:14a6.4L9:15a3.3H2:41p8.2L10:16p0.18.1 spring tide
ThuOct 15H5:16a6.2L10:00a3.6H3:19p7.8L11:05p0.37.5
FriOct 16H6:27a6.1L10:59a3.8H4:06p7.53.6

Spring tides Saturday to Wednesday. Lows drop to −0.1 ft, the best shelling days this week. Spring and neap tides

Tide predictions and observations: NOAA National Ocean Service, Center for Operational Oceanographic Products and Services (CO-OPS), station 9414513.

Nearby stations

Currents

Redwood Creek

  • Slack1:08 AM
  • Max ebb3:43 AM 0.8 kn
  • Slack6:49 AM
  • Max flood10:13 AM 1.0 kn
  • Slack1:04 PM
  • Max ebb4:10 PM 1.1 kn
  • Slack7:57 PM
  • Max flood11:08 PM 1.0 kn

Current predictions for Redwood Creek, 2 mi away. Currents near inlets can be strong. Not for navigation.

Station details

Datum
Mean lower low water
Predictions
NOAA subordinate, from San Francisco, San Francisco Bay
Live gauge
None
Coordinates
37.495° N, 122.213° W
Time zone
Pacific, UTC−7
Station ID
NOAA 9414513

About the tides at Granite Rock

Granite Rock has a mixed tide. The two daily highs, and especially the two lows, can differ a lot in height. The pattern follows the reference station at San Francisco, San Francisco Bay. With a mean range of about 6.2 ft, the shoreline here changes a lot between high and low water. That is larger than most California stations on this site. Over the next two weeks the biggest daily range, 8.8 ft, comes tomorrow, and the smallest, 3.6 ft, on Friday. Looking a year ahead, predictions peak at 10.3 ft on December 24 and bottom out at −1.9 ft on December 24.

Tides here are worked out from the reference station at San Francisco, San Francisco Bay, with NOAA time and height corrections. Times are good for planning, but local wind can shift them. The nearest other station is Smith Slough, 0.7 mi away, where high tide comes about 20 min later. For tidal currents, see Redwood Creek.

Predictions are based on San Francisco, San Francisco Bay.

Height unitsftmAdd this tide widget to your site. It's free.Week plannerPrintable October calendar

Tide predictions and water levels from NOAA CO-OPS. For planning only, not for navigation. Real water levels can differ because of wind, air pressure and river flow. Always check conditions on site.