Alto tides today
- Tide now 0.5 ft ↑ rising · high 4:06 am (4.7 ft)
- Best time tomorrow 3:10–5:00 am good day · 7/10
- Beach day 12:00–4:00 pm Fair beach day · 5/10
- Waves · water 4.4 ft · 62 °F moderate · 9.6 s from the west
- Wind · air 2 mph · 55 °F from the SW, gusts 3 · partly cloudy
- Sun 7:32 am–6:15 pm 10 h 44 min of daylight
- Moon 91% · 8:03 pm waning gibbous · rises at 8:03 pm
- Diving tomorrow 1:30–3:00 pm good day · 8/10
- Coastal Flood Advisory: minor flooding along the shore at high tide. Until Sat 31, 6:00 pm. NWS San Francisco CA
Today in Alto there are high tides at 3:05 am (4.7 ft) and 1:43 pm (6.6 ft) and low tides at 7:51 am and 9:00 pm. Tide coefficient 86. Right now the tide is rising toward the high tide at 4:06 am. The sun rises at 7:32 am and sets at 6:15 pm: 10 h 44 min of daylight. The moon is 91% illuminated (waning gibbous) and rises at 8:03 pm. Major solunar periods run from 1:53 am to 3:53 am and from 2:25 pm to 4:25 pm. The next spring tides arrive from October 26 to 28. The sea is moderate, with 4.4 ft waves. There's a light air from the southwest (2 mph). Partly cloudy, 55 °F.
Fishing in Alto today
Best time to fish
Solunar activity today: medium- Low tide at 7:51 am
- Sunrise at 7:32 am
- Steady pressure (30.03 inHg), almost no wind and some swell (4.0 ft waves) to stir the water
- Waning gibbous: a bit more activity than at the quarters
- Highest tide coefficient today: 86 (average tides)
Your day at a glance
The best window, 7:00 am to 8:10 am, combines the 7:51 am low tide, sunrise and some swell. Also good from 2:10 am to 3:50 am, with the 3:05 am high tide, a major period and some swell. Also good from 12:40 pm to 2:40 pm, with the 1:43 pm high tide, a major period and some swell.
Species with the most records nearby: Chinook salmon, market squid, striped bass and lingcod. October is one of the months when these are seen most: lingcod and black rockfish. What you can catch
Beach day in Alto
Is it a beach day?
- Sunny
- Offshore breeze (6 mph)
- Calm for swimming: 3.9 ft waves
- UV 4 (moderate): SPF 30 sunscreen
- Feels like 68 °F: a bit cool
- Water at 62 °F (cold)
Today, hour by hour
- Swimming Calm · 3.9 ft
3.9 ft waves: calm for swimming. Low rip current risk. Always follow the lifeguard's flags.
- Water 62 °F
Cold: ease in slowly.
- Sun & sunscreen UV 4 · SPF 30
Max UV 4 (moderate): SPF 30 sunscreen, reapplied every 2 hours.
- Wind 6 mph
Offshore breeze (6 mph).
- Tide & sand 7:51 am
Low tide at 7:51 am and 9:00 pm: that's when there's the most sand. High tide at 3:05 am and 1:43 pm.
The best window, 12:00 pm to 4:00 pm, brings sunshine, little wind and a calm sea, though with cool air.
We don't have data on jellyfish, sargassum or beach closures: ask the lifeguard or check with the local beach authority. How it works · The next 7 days
Beaches near Alto
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- Bramble Beach 3.2 mi · SE
- Schoonmaker Beach 3.4 mi · SE
- Restrooms
- Parking
- San Quentin Beach 3.5 mi · NE
- Parking
- Pirates Cove 4.1 mi · SW
- Muir Beach 4.2 mi · SW
- Restrooms
- Parking
- Nudity allowed
- Rodeo Beach 5.1 mi · S
- Restrooms
- Showers
- Parking
- Perles Beach 5.9 mi · SE
- Restrooms
- Red Rock Beach 6.0 mi · W
- Parking
- Nudity allowed
Water quality: check the official beach advisories for California (California State Water Resources Control Board).
Named beaches within 6.2 mi, nearest first. Amenities from OpenStreetMap: some may be missing or out of date. View on OpenStreetMap · Add or fix on OpenStreetMap
Beaches and amenities: © OpenStreetMap contributors (ODbL).
Webcams near Alto
Webcams provided by windy.com — add a webcam
Tides in Alto
Today's high and low tides
- ▲ High tide 3:05 am 4.7 ft · coef. 86
- ▼ Low tide 7:51 am 2.6 ft
- ▲ High tide 1:43 pm 6.6 ft · coef. 85
- ▼ Low tide 9:00 pm -0.8 ft
↑ Rising The tide is rising. 4 h 58 min to high tide at 4:06 am.
Tide coefficient 86 for the 3:05 am high tide and 85 for the 1:43 pm high tide. Average coefficient. The water rises and falls 7.3 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?
2026 extremes: the highest tide of the year is on July 12 (7.1 ft) and the lowest, on June 16 (-1.8 ft).
Mixed: two high and two low tides a day, but of quite different heights.
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. MLLW
Tide coefficient and range in October
The biggest tides of the month came from October 26 to 29 (coefficient 86, 7.3 ft range). The smallest, from October 18 to 19 (coefficient 42, 4.1 ft).
Tide and solunar table · this week
| Day | Sun | Tide 1 | Tide 2 | Tide 3 | Tide 4 | Coef. | Moon | Major periods | Activity |
|---|---|---|---|---|---|---|---|---|---|
| Today, Wed 28 | 7:32 am · 6:15 pm | High tide 3:05 am · 4.7 ft | Low tide 7:51 am · 2.6 ft | High tide 1:43 pm · 6.6 ft | Low tide 9:00 pm · -0.8 ft | Coef. 86 | 91% | Major periods 1:53 am · 2:25 pm | Medium |
| Thu 29 | 7:33 am · 6:14 pm | High tide 4:06 am · 4.7 ft | Low tide 8:42 am · 2.7 ft | High tide 2:32 pm · 6.5 ft | Low tide 9:54 pm · -0.8 ft | Coef. 84 | 83% | Major periods 2:57 am · 3:30 pm | Medium |
| Fri 30 | 7:34 am · 6:13 pm | High tide 5:06 am · 4.7 ft | Low tide 9:39 am · 2.9 ft | High tide 3:26 pm · 6.3 ft | Low tide 10:51 pm · -0.6 ft | Coef. 80 | 73% | Major periods 4:02 am · 4:33 pm | Medium |
| Sat 31 | 7:35 am · 6:12 pm | High tide 6:07 am · 4.7 ft | Low tide 10:45 am · 2.9 ft | High tide 4:27 pm · 5.9 ft | Low tide 11:52 pm · -0.3 ft | Coef. 75 | 62% | Major periods 5:04 am · 5:33 pm | Medium |
| Sun 1 | 6:36 am · 5:11 pm | High tide 6:06 am · 4.7 ft | Low tide 11:03 am · 2.8 ft | High tide 4:37 pm · 5.4 ft | Low tide 11:55 pm · 0.0 ft | Coef. 70 | Last quarter | Major periods 5:01 am · 5:27 pm | Medium |
| Mon 2 | 6:37 am · 5:10 pm | High tide 7:01 am · 4.9 ft | Low tide 12:28 pm · 2.4 ft | High tide 5:58 pm · 4.9 ft | — | Coef. 67 | 39% | Major periods 5:53 am · 6:18 pm | Medium |
| Tue 3 | 6:38 am · 5:09 pm | Low tide 12:57 am · 0.4 ft | High tide 7:51 am · 5.1 ft | Low tide 1:45 pm · 1.9 ft | High tide 7:25 pm · 4.6 ft | Coef. 70 | 29% | Major periods 6:41 am · 7:04 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.
Where this tide comes from
Tides from the Corte Madera Creek station (NOAA), 2.8 mi from Alto. Times and heights are its predictions.
Station data attribution: Slackwater database (https://github.com/openwatersio/slackwater-database)
The sea at Alto
Sea stateSea state: moderate
The waves you may find
- Most commonMost common2.2 ft
- Significant4.4 ft
- Highest expectedHighest8.8 ft
One wave in seven is higher than the significant height, and about 3 times a day one reaches 8.8 ft. Before heading out, expect waves of up to 8.8 ft.
Wind on the coast and offshore
Cross-offshore wind. The coast faces east and the wind comes off the land at an angle: calmer water near the shore, and bait and boats drift out to sea.
Wave height, next 7 daysWaves, next 7 days
Waves stay much the same all week. The biggest waves arrive on Sunday 1: 5.3 ft with a period of 9 s, from the west (moderate).
Water temperature
Water temperature →Water temperature changes how fish behave: in very cold or very warm water they feed less. The water is steady these days, with no sudden changes.
Water warmer than normal for late October (+5.8 °F).
Satellite: NASA MUR (JPL MUR MEaSUREs, PO.DAAC), doi:10.5067/GHGMR-4FJ04. Sources and licenses
Water temperature →Forecast from Open-Meteo (CC BY 4.0) with models from ECMWF, NOAA, Météo-France, DWD, Copernicus Marine and CAMS. Updated at 11:07 pm (local time).
Nearest buoy
This is a real measurement of the sea, not a forecast. Data from station 46237, courtesy of CDIP (Coastal Data Information Program, Scripps Institution of Oceanography), via the NOAA National Data Buoy Center.
Diving in Alto today
Diving and snorkeling today
Likely visibility: good- Slack water around high tide (1:43 pm): little current from 1:20 pm to 2:10 pm
- 3.0 ft swell at 6 s from the west-northwest: some surge on the bottom
- Light cross-shore wind (5 mph)
- 0.5 mph current toward the west-southwest, weak (model)
- Sun high: more light underwater
- Slack water today: high tide 3:05 am (2:30–3:40 am), low tide 7:51 am (7:20–8:20 am), high tide 1:43 pm (1:20–2:10 pm) and low tide 9:00 pm (8:40–9:20 pm)
- Likely visibility: good. Swell (up to 4.2 ft at 6 s) over the last few days has stirred up the water. Based on the last 24 hours of data.
- Water at 61.9 °F: a 7 mm wetsuit, with hood and booties.
- Snorkeling: better not, with these waves, wind or current.
- Night dive: dark from 6:43 pm. Waning gibbous (91%), rising at 8:03 pm: a bright night.
Your diving day at a glance
The best window, 12:50 pm to 2:30 pm, combines slack water at high tide, light wind, weak current and the sun high. Also worth a look from 7:30 am to 8:40 am, with slack water at low tide, light wind and weak current, though with some swell.
Slack water comes from the tide: in inlets, channels and between islands the water can keep running for an hour or two after. Ask the local dive shop.
Never dive alone and check with the local dive shop: this rating is a guide, not a substitute for a professional.
Dive sites, wrecks and dive shops nearby
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- Brig Galilee 3.5 mi
- Wreck 3.4 mi
- Wreck 5.7 mi
- Wreck 5.9 mi
- Wreck 6.0 mi
- Wreck 6.2 mi
- Richardson Bay Audubon Sanctuary 2.5 mi
- Marin Islands Ecological Reserve 5.5 mi
- Miller/Knox Regional Shoreline 7.7 mi
- Harbor Dive Center 2.9 mi
- Marin Diving Center 6.4 mi
- Bamboo Reef Scuba Diving Centers 11 mi
Within 12 mi. Some may be missing or closed; marine reserves usually need a permit. Open the map on OpenStreetMap · Missing one? Add it to OpenStreetMap
Wreck and reef positions are approximate and not for navigation; a wreck’s depth runs from the top of the hull to the seabed.
Sites: © OpenStreetMap contributors (ODbL). US wrecks: NOAA electronic navigational charts (ENC), a U.S. Government work; not for navigation.
Weather in Alto
Now in Alto
- Low / high
- 46 / 70 °F
- Rain
- 0.00 in · 1%
- Clouds
- 68%
- Humidity
- 61%
- Dew pointDew point
- 41 °F
- Visibility
- 18 mi
- UV indexUV
- 0 · low
- Air qualityAir
- Moderate · 61
- Saharan dust
- No
Pressure and fishing
- ↗ RisingRising Anglers say fish bite less for a while
- → SteadySteady · now Anglers expect normal activity
- ↘ FallingFalling Anglers say fish feed more before the change
Steady now (−0.02 inHg in 3 hours). Over the next 48 hours: −0.04 inHg. Steady pressure: anglers expect normal activity. Fast changes, either way, tend to affect fishing.
Today, hour by hourHour by hour
Bars: mean wind. Dashed line: gusts. Arrows point where the wind blows to.
| Time | 12:00 am | 3:00 am | 6:00 am | 9:00 am | 12:00 pm | 3:00 pm | 6:00 pm | 9:00 pm |
|---|---|---|---|---|---|---|---|---|
| Sky | Clear | Clear | Mainly clear | Partly cloudy | Clear sky | Mainly clear | Partly cloudy | Mainly clear |
| Temperature | 52° | 49° | 49° | 53° | 66° | 69° | 66° | 57° |
| Wind (mph) | 3 N | 3 N | 3 NNW | 3 N | 3 ENE | 6 SW | 3 WNW | 2 SSE |
| Gusts | 5 | 6 | 7 | 10 | 6 | 7 | 5 | 2 |
| Waves | 4.7 ft | 4.5 ft | 4.1 ft | 4.0 ft | 3.9 ft | 3.9 ft | 4.0 ft | 4.3 ft |
| Rain | 0.00 in | 0.00 in | 0.00 in | 0.00 in | 0.00 in | 0.00 in | 0.00 in | 0.00 in |
- 12:00 am 54° 3 SSW 4.3 ft
- 3:00 am 53° 2 W 4.1 ft
- 6:00 am 50° 2 W 3.9 ft
- 9:00 am 55° 2 WSW 3.8 ft
- 12:00 pm 64° 3 E 3.8 ft
- 3:00 pm 64° 8 SW 3.9 ft
- 6:00 pm 62° 0 WSW 3.8 ft
- 9:00 pm 57° 0 WSW 3.7 ft
Next 14 daysComing days
| Day | Sky | Low / high | Max wind | Max wave | High tides |
|---|---|---|---|---|---|
| Today · 28 | 46 / 70 °F | 6 mph WNW | 4.7 ft | 3:05 am · 1:43 pm | |
| Thu 29 | 50 / 66 °F | 9 mph SW | 4.3 ft | 4:06 am · 2:32 pm | |
| Fri 30 | 52 / 64 °F | 10 mph W | 3.9 ft | 5:06 am · 3:26 pm | |
| Sat 31 | 50 / 62 °F | 6 mph WNW | 3.9 ft | 6:07 am · 4:27 pm | |
| Sun 1 | 48 / 65 °F | 8 mph NNW | 5.3 ft | 6:06 am · 4:37 pm | |
| Mon 2 | 49 / 68 °F | 6 mph NE | 5.0 ft | 7:01 am · 5:58 pm | |
| Tue 3 | 52 / 69 °F | 8 mph NE | 5.0 ft | 7:51 am · 7:25 pm | |
| Wed 4 | 52 / 67 °F | 5 mph SW | 4.3 ft | 8:35 am · 8:45 pm | |
| Thu 5 | 52 / 66 °F | 7 mph WNW | 5.1 ft | 9:14 am · 9:54 pm | |
| Fri 6 | 52 / 65 °F | 8 mph WNW | 7.7 ft | 9:48 am · 10:54 pm | |
| Sat 7 | 53 / 65 °F | 6 mph WNW | — | 10:19 am · 11:49 pm | |
| Sun 8 | 53 / 69 °F | 5 mph N | — | 10:48 am | |
| Mon 9 | 57 / 71 °F | 3 mph NNW | — | 12:41 am · 11:17 am | |
| Tue 10 | 58 / 72 °F | 5 mph WNW | — | 1:31 am · 11:47 am |
- Thu 29 Overcast 50° / 66° 4.3 ft
- Fri 30 Overcast 52° / 64° 3.9 ft
- Sat 31 Overcast 50° / 62° 3.9 ft
- Sun 1 Drizzle 48° / 65° 5.3 ft
- Mon 2 Overcast 49° / 68° 5.0 ft
- Tue 3 Overcast 52° / 69° 5.0 ft
- Wed 4 Overcast 52° / 67° 4.3 ft
Each day comes from the best model covering this spot: regional ones first (HRRR and NBM in the U.S., AROME, ICON-EU), then ECMWF; day 16, NOAA GFS. Waves: Météo-France up to day 10, then ECMWF WAM, coarser and further offshore. High tides: our own tide calculation.
- Normal Today, normal highs for late October (69 °F). Climate by month →
Forecast from Open-Meteo (CC BY 4.0) with models from ECMWF, NOAA, Météo-France, DWD, Copernicus Marine and CAMS. Updated at 11:07 pm (local time).
The sun in Alto
Sunrise and sunset
- First light 6:34 am
- Full dark 7:13 pm
- Civil dawn 7:05 am
- Civil dusk 6:43 pm
- Solar noon 12:54 pm (39° high)
- Daylight 10 h 44 min (−2 min)
- Evening golden hour 5:39 pm
- Full dark 7:13 pm
Golden hour and the day-night map
Today the sun is 92,351,554 mi away and looks 32′ 11″ across.
The moon in Alto
Moon phase and position
Today the moon is 226,426 mi away and looks 32′ 47″ across.
Solunar periods
Today's activity: medium- 1:53–3:53 am Major · the moon passes overhead · high activity
- 2:25–4:25 pm Major · the moon passes underfoot · high activity
- 10:15–11:15 am Minor · moonset · medium activity
- 7:33–8:33 pm Minor · moonrise · medium activity
According to solunar theory, fish feed more when the moon passes overhead or underfoot (major periods, about 2 h) and when it rises or sets (minor periods, 1 h). It works best around new and full moon.
Upcoming moon phases
2026 moon calendar →- Last quarter Sun, Nov 1 · 12:29 pmNov 1 in 4 days
- New moon Sun, Nov 8 · 11:03 pmNov 8 in 11 days
- First quarter Tue, Nov 17 · 3:48 amNov 17 in 20 days
- Full moon Tue, Nov 24 · 6:54 amNov 24 in 27 days
Perigee on October 28, 226,426 mi away, coinciding with the spring tides from October 26 to 28: they will be stronger than usual.
Where to fish in Alto
Piers, ramps and tackle shops nearby
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- Fishing pier 2.6 mi
- Haul Out 2.8 mi
- 200 2.8 mi
- 250, 300 2.9 mi
- Boat ramp 1.9 mi
- Boat ramp 2.9 mi
- Boat ramp 3.7 mi
- Richardson Bay Marina 2.3 mi
- Waldo Point Harbor 2.5 mi
- J & P Bait 8.8 mi
- Gus' Discount Tackle 9.0 mi
- Fuel dock 2.9 mi
Within 9.3 mi. A spot may be missing or closed. Open the map on OpenStreetMap · Missing one? Add it to OpenStreetMap
Spots: © OpenStreetMap contributors (ODbL) and Overture Maps.
Nearest lighthouse
Lime Point Light 6.0 mi southeast
- Light
- A white flash every 5 s · Fl W 5s
- Light height
- 16 ft above sea level
- Built
- 1883
Other lighthouses nearby: Point Bonita Lighthouse (6.1 mi south).
Data from Wikidata. For reference only: not for navigation. Wikipedia · Wikidata · Sources and licenses
Tides near AltoTides nearby
- Strawberry1.0 mi
- Mill Valley1.1 mi
- Corte Madera1.5 mi
- Tamalpais Valley2.0 mi
- Larkspur2.1 mi
- Marin City2.6 mi
- Greenbrae3.1 mi
- Hilarita3.2 mi
- San Quentin3.4 mi
- Kentfield3.7 mi
Alto at a glance
- Town or city of about 711 people. Coordinates: 37.904° N, 122.526° W.
- It is 469 mi northwest of San Diego, the main place in California. The sun rises 29 min later and sets 14 min later than in San Diego.
- The nearest tide station, Corte Madera Creek, is 2.8 mi to the north.
- Its coast faces east.
- Beaches and harbors nearby: Kappas Yacht Harbor (2.3 mi), Waldo Point Harbor (2.5 mi), Clipper Yacht Harbor (2.8 mi), South Pier (3.3 mi).
Questions about AltoQuestions
What time is high tide today in Alto?
Today in Alto there are high tides at 3:05 am (4.7 ft) and 1:43 pm (6.6 ft) and low tides at 7:51 am and 9:00 pm. Tide coefficient 86.
What time is sunset today in Alto?
At 6:15 pm. There is light until the end of civil twilight, at 6:43 pm.
What time is sunrise tomorrow in Alto?
At 7:33 am. First light comes at 6:35 am.
What phase is the moon today?
Waning gibbous, 91% illuminated. New moon on Sun, Nov 8 · 11:03 pm.
When are the next spring tides?
From October 26 to 28, together with the lunar perigee: they will be stronger than usual.
What are today's solunar periods?
Major 1:53–3:53 am, Minor 10:15–11:15 am, Major 2:25–4:25 pm, Minor 7:33–8:33 pm. Today's activity is medium.
What's the weather like today in Alto?
Partly cloudy, from 46 °F to 70 °F, with a light air from the southwest (2 mph) and a 1% chance of rain.
How is the sea today in Alto?
Moderate (Douglas 4): 4.4 ft waves with a period of 9.6 s from the west. The water is 62.1 °F.
When is the best time to visit Alto?
The best time to visit Alto is from June to September: highs of 72 °F to 76 °F, barely 1 rainy day a month and 10 hours of sunshine a day.
Can I use this data for navigation?
No. These are predictions for fishing and leisure; for navigation, use the official publications.
Where this data comes from
Tide: NOAA station Corte Madera Creek (public domain), via Slackwater database. Sun and moon: our own calculation with astronomy-engine. Places: GeoNames (CC BY 4.0). Coastline: © OpenStreetMap contributors (ODbL).