Groton tides today
- Tide now 0.1 ft ↑ rising · high 11:46 pm (2.6 ft)
- Best time tomorrow 11:10 am–12:10 pm good day · 7/10
- Beach day Not today Not a beach day · 0/10
- Waves · water 0.9 ft · 60 °F smooth · 6.9 s from the southeast
- Wind · air 3 mph · 50 °F from the S, gusts 7 · partly cloudy
- Sun 7:15 am–5:48 pm 10 h 33 min of daylight
- Moon 91% · 7:19 pm waning gibbous · rises at 7:19 pm
- Diving tomorrow 11:30 am–1:20 pm great day · 10/10
Today in Groton there are high tides at 11:17 am (3.6 ft) and 11:46 pm (2.6 ft) and low tides at 5:15 am and 6:12 pm. Tide coefficient 87. Right now the tide is rising toward the high tide at 11:46 pm. The sun rises at 7:15 am and sets at 5:48 pm: 10 h 33 min of daylight. The moon is 91% illuminated (waning gibbous) and rises at 7:19 pm. Major solunar periods run from 1:23 am to 3:23 am and from 1:54 pm to 3:54 pm. The next spring tides arrive from October 26 to 28. The sea is smooth, with 0.9 ft waves. There's a light air from the south (3 mph). Partly cloudy, 50 °F.
Fishing in Groton today
Best time to fish
Solunar activity today: medium- Low tide at 6:12 pm
- Sunset at 5:48 pm, golden hour from 5:10 pm
- Steady pressure (30.42 inHg), almost no wind and calm sea (0.9 ft waves)
- Waning gibbous: a bit more activity than at the quarters
- Highest tide coefficient today: 87 (average tides)
Your day at a glance
The best window, 5:10 pm to 6:20 pm, combines the 6:12 pm low tide and sunset. Also worth a try from 10:20 am to 11:00 am, with the 11:17 am high tide and moonset, though with rising pressure.
Species with the most records nearby: scup, longfin inshore squid, summer flounder and winter flounder. October is one of the months when these are seen most: scup and longfin inshore squid. What you can catch
Beach day in Groton
Is it a beach day?
- Calm for swimming: 1.2 ft waves
- UV 3 (moderate): SPF 30 sunscreen
- Cloudy (81% cloud cover)
- Feels like 52 °F: chilly for the beach
- Light offshore wind (8 mph): it blows floats and inflatables out to sea
- Water at 60 °F (cold)
Today, hour by hour
- Swimming Calm · 1.2 ft
1.2 ft waves: calm for swimming. Low rip current risk. Always follow the lifeguard's flags.
- Water 60 °F
Cold: ease in slowly.
- Sun & sunscreen UV 3 · SPF 30
Max UV 3 (moderate): SPF 30 sunscreen, reapplied every 2 hours.
- Wind 8 mph
Offshore breeze (8 mph). Watch floats and inflatables: offshore wind carries them out to sea.
- Tide & sand 5:15 am
Low tide at 5:15 am and 6:12 pm: that's when there's the most sand. High tide at 11:17 am and 11:46 pm.
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 Groton
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- Green Harbor Beach 1.4 mi · SW
- Parking
- Mitchell Beach 1.6 mi · SW
- Eastern Point Beach 2.1 mi · S
- Lifeguard
- Parking
- Shennecossett Beach 2.1 mi · S
- Osprey Beach 2.5 mi · S
- Groton Beach 2.6 mi · SE
- Restrooms
- Parking
- Bushy Point Beach 2.8 mi · SE
- Restrooms
- Ocean Beach 3.1 mi · S
- Lifeguard
- Restrooms
- Parking
Water quality: check the official beach advisories for Connecticut (Connecticut Department of Public Health).
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 Groton
Webcams provided by windy.com — add a webcam
Tides in Groton
Today's high and low tides
- ▼ Low tide 5:15 am 0.2 ft
- ▲ High tide 11:17 am 3.6 ft · coef. 87
- ▼ Low tide 6:12 pm -0.1 ft
- ▲ Next high tide 11:46 pm 2.6 ft · coef. 85
↑ Rising The tide is rising. 4 h 52 min to high tide at 11:46 pm.
Tide coefficient 87 for the 11:17 am high tide and 85 for the 11:46 pm high tide. Average coefficient. The water rises and falls 3.7 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 June 14 (3.8 ft) and the lowest, on January 3 (-0.6 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 27 (coefficient 90, 3.7 ft range). The smallest, from October 17 to 19 (coefficient 44, 1.9 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 | 7:15 am · 5:48 pm | Low tide 5:15 am · 0.2 ft | High tide 11:17 am · 3.6 ft | Low tide 6:12 pm · -0.1 ft | High tide 11:46 pm · 2.6 ft | Coef. 87 | 91% | Major periods 1:23 am · 1:54 pm | Medium |
| Thu 29 | 7:16 am · 5:47 pm | Low tide 6:07 am · 0.3 ft | High tide 12:11 pm · 3.5 ft | Low tide 7:08 pm · 0.0 ft | — | Coef. 82 | 84% | Major periods 2:26 am · 2:59 pm | Medium |
| Fri 30 | 7:17 am · 5:46 pm | High tide 12:43 am · 2.5 ft | Low tide 7:08 am · 0.4 ft | High tide 1:12 pm · 3.3 ft | Low tide 8:08 pm · 0.1 ft | Coef. 79 | 74% | Major periods 3:31 am · 4:03 pm | Medium |
| Sat 31 | 7:19 am · 5:45 pm | High tide 1:46 am · 2.5 ft | Low tide 8:14 am · 0.4 ft | High tide 2:16 pm · 3.1 ft | Low tide 9:08 pm · 0.2 ft | Coef. 73 | 63% | Major periods 4:33 am · 5:03 pm | Medium |
| Sun 1 | 6:20 am · 4:43 pm | High tide 1:52 am · 2.5 ft | Low tide 8:21 am · 0.5 ft | High tide 2:21 pm · 3.0 ft | Low tide 9:08 pm · 0.3 ft | Coef. 68 | Last quarter | Major periods 4:31 am · 4:58 pm | Medium |
| Mon 2 | 6:21 am · 4:42 pm | High tide 3:02 am · 2.5 ft | Low tide 9:30 am · 0.5 ft | High tide 3:30 pm · 2.8 ft | Low tide 10:07 pm · 0.3 ft | Coef. 66 | 41% | Major periods 5:24 am · 5:49 pm | Medium |
| Tue 3 | 6:22 am · 4:41 pm | High tide 4:13 am · 2.7 ft | Low tide 10:37 am · 0.4 ft | High tide 4:35 pm · 2.7 ft | Low tide 11:02 pm · 0.3 ft | Coef. 68 | 30% | Major periods 6:13 am · 6:36 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 New London station (NOAA), 1.7 mi from Groton. Times and heights are its predictions.
Station data attribution: Slackwater database (https://github.com/openwatersio/slackwater-database)
The sea at Groton
Sea stateSea state: smooth
The waves you may find
- Most commonMost common0.4 ft
- Significant0.9 ft
- Highest expectedHighest1.7 ft
One wave in seven is higher than the significant height, and about 3 times a day one reaches 1.7 ft. Before heading out, expect waves of up to 1.7 ft.
Wind on the coast and offshore
Cross-onshore wind. The coast faces west and the wind comes in from the sea at an angle: a bit more surf at the shore and drift along the coast, toward land.
Wave height, next 7 daysWaves, next 7 days
Waves stay much the same all week. The biggest waves arrive on Friday 30: 1.6 ft with a period of 3 s, from the south-southwest (smooth).
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 about normal for late October.
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 6:53 pm (local time).
Nearest marine station
This is a real measurement of the sea, not a forecast. Data from station NLHC3, NOAA National Data Buoy Center (public domain).
Diving in Groton today
Diving and snorkeling today
Likely visibility: good- Slack water around high tide (11:17 am): little current from 10:50 am to 11:40 am
- 0.9 ft swell at 7 s from the southeast: barely any surge
- Almost no wind
- 0.0 mph current toward the east, weak (model)
- Sun high: more light underwater
- Slack water today: low tide 5:15 am (4:50–5:30 am), high tide 11:17 am (10:50–11:40 am), low tide 6:12 pm (5:57–6:30 pm) and high tide 11:46 pm (11:10 pm–12:20 am)
- Likely visibility: good. The sea has been calm and there's been little rain. Based on the last 24 hours of data.
- Water at 59.7 °F: a 7 mm wetsuit, with hood and booties.
- Snorkeling: good, calm sea and light wind.
- Night dive: dark from 6:17 pm. Waning gibbous (91%), rising at 7:19 pm: a bright night.
Your diving day at a glance
The best window, 10:40 am to 12:20 pm, combines slack water at high tide, little swell, light wind, weak current and the sun high.
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
- Wreck 4.8 mi
- Wreck 5.0 mi
- Wreck 5.0 mi
- Wreck 5.1 mi
- Wreck 5.8 mi
- Wreck 5.9 mi
- Wreck 5.9 mi
- Wreck 6.7 mi
- Wreck 6.9 mi
- Wreck 7.7 mi
- Ocean Beach 3.2 mi
- Seaview Scuba 5.4 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 Groton
Now in Groton
- Low / high
- 36 / 56 °F
- Rain
- 0.00 in · 0%
- Clouds
- 65%
- Humidity
- 65%
- Dew pointDew point
- 38 °F
- Visibility
- 17 mi
- UV indexUV
- 0 · low
- Air qualityAir
- Good · 29
- 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 (0.00 inHg in 3 hours). Over the next 48 hours: −0.29 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 | Partly cloudy | Clear | Clear | Partly cloudy | Overcast | Overcast | Overcast | Mainly clear |
| Temperature | 39° | 37° | 36° | 41° | 56° | 56° | 52° | 47° |
| Wind (mph) | 4 N | 4 N | 4 NNW | 8 N | 3 S | 6 S | 3 S | 4 SW |
| Gusts | 6 | 13 | 12 | 11 | 6 | 6 | 7 | 9 |
| Waves | 1.0 ft | 1.0 ft | 1.2 ft | 1.1 ft | 1.0 ft | 0.9 ft | 0.9 ft | 0.9 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 |
- 6:00 pm 52° 3 S 0.9 ft
- 9:00 pm 47° 4 SW 0.9 ft
- 12:00 am 46° 3 SW 0.9 ft
- 3:00 am 46° 3 WSW 0.9 ft
- 6:00 am 45° 3 WSW 0.9 ft
- 9:00 am 49° 1 NNW 0.9 ft
- 12:00 pm 62° 11 SW 0.8 ft
- 3:00 pm 66° 9 SW 0.8 ft
Next 14 daysComing days
| Day | Sky | Low / high | Max wind | Max wave | High tides |
|---|---|---|---|---|---|
| Today · 28 | 36 / 56 °F | 8 mph NW | 1.2 ft | 11:17 am · 11:46 pm | |
| Thu 29 | 44 / 66 °F | 11 mph SW | 1.4 ft | 12:11 pm | |
| Fri 30 | 46 / 69 °F | 11 mph WNW | 1.6 ft | 12:43 am · 1:12 pm | |
| Sat 31 | 38 / 58 °F | 8 mph NNW | 1.2 ft | 1:46 am · 2:16 pm | |
| Sun 1 | 35 / 61 °F | 6 mph WSW | 0.8 ft | 1:52 am · 2:21 pm | |
| Mon 2 | 44 / 65 °F | 7 mph WSW | 0.9 ft | 3:02 am · 3:30 pm | |
| Tue 3 | 46 / 65 °F | 7 mph ENE | 1.0 ft | 4:13 am · 4:35 pm | |
| Wed 4 | 47 / 64 °F | 10 mph SE | 1.9 ft | 5:15 am · 5:32 pm | |
| Thu 5 | 49 / 64 °F | 11 mph E | 1.8 ft | 6:05 am · 6:21 pm | |
| Fri 6 | 50 / 64 °F | 13 mph S | 3.6 ft | 6:50 am · 7:07 pm | |
| Sat 7 | 45 / 61 °F | 10 mph NW | 4.3 ft | 7:32 am · 7:51 pm | |
| Sun 8 | 38 / 58 °F | 9 mph NW | 3.3 ft | 8:12 am · 8:34 pm | |
| Mon 9 | 34 / 59 °F | 7 mph NNW | 1.8 ft | 8:52 am · 9:17 pm | |
| Tue 10 | 35 / 57 °F | 7 mph NE | 1.6 ft | 9:33 am · 10:00 pm |
- Thu 29 Clear sky 44° / 66° 1.4 ft
- Fri 30 Light drizzle 46° / 69° 1.6 ft
- Sat 31 Mainly clear 38° / 58° 1.2 ft
- Sun 1 Mainly clear 35° / 61° 0.8 ft
- Mon 2 Partly cloudy 44° / 65° 0.9 ft
- Tue 3 Overcast 46° / 65° 1.0 ft
- Wed 4 Overcast 47° / 64° 1.9 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.
- The models They agree · high confidence for the next few days. See the models →
- Outlook Next few weeks, compared with normal: warmer and normal rain. See the outlook →
- Normal Today, cooler than normal for late October (−3.7 °F; normal high: 60 °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 6:53 pm (local time).
The sun in Groton
Sunrise and sunset
- First light 6:14 am
- Full dark 6:49 pm
- Civil dawn 6:47 am
- Civil dusk 6:17 pm
- Solar noon 12:32 pm (35° high)
- Daylight 10 h 33 min (−3 min)
- Evening golden hour 5:10 pm
- Full dark 6:49 pm
Golden hour and the day-night map
Today the sun is 92,354,970 mi away and looks 32′ 11″ across.
The moon in Groton
Moon phase and position
Today the moon is 226,429 mi away and looks 32′ 47″ across.
Solunar periods
Today's activity: medium- 1:23–3:23 am Major · the moon passes overhead · high activity
- 1:54–3:54 pm Major · the moon passes underfoot · high activity
- 9:56–10:56 am Minor · moonset · medium activity
- 6:49–7:49 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 · 3:29 pmNov 1 in 4 days
- New moon Mon, Nov 9 · 2:03 amNov 9 in 12 days
- First quarter Tue, Nov 17 · 6:48 amNov 17 in 20 days
- Full moon Tue, Nov 24 · 9:54 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 Groton
Piers, ramps and tackle shops nearby
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- New London City Pier 0.7 mi
- Pier 7 0.8 mi
- Pier 4 0.8 mi
- Amistad Landing 0.8 mi
- Boat ramp 1.0 mi
- Thames River Boat Launch 1.1 mi
- Bayberry Lane Boat Launch 2.3 mi
- New London Municipal Dock 0.7 mi
- Fort Trumbull Marina 1.0 mi
- Ken's Tackle Shop 0.5 mi
- A.W. Marina 1.5 mi
- Fuel dock 5.1 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.
Water depth
Drops off fastThe bottom drops off fast: the water is 33 ft deep just 650 ft from shore.
From the shoreline (1,000 ft from Groton) out to sea, heading southwest.
How far from shore
- 16 ft deep150 ft
- 33 ft deep650 ft
- 66 ft deepnot within 1.4 mi
- 164 ft deepnot within 1.4 mi
For fishing, swimming and diving
- Shore fishing. Deep water close in: about 20 ft just 330 ft out. Good for casting from rocks, jetties or the beach itself; current and surf hit harder here.
- Swimming. The bottom drops quickly near the shore and you are soon out of your depth. Keep an eye on kids and weak swimmers.
- Diving. 33 ft deep 650 ft from shore; 66 ft is far out (beyond 1.4 mi): for deeper dives, go by boat.
Inside bays, estuaries and harbors the bottom changes a lot from spot to spot (channels and shoals): use this only as a rough guide. There is land ahead (an island, a headland or the far shore) 1.4 mi out. The profile is turned slightly from the coast so it does not run into an island or a headland. Right by the shore the bottom may drop even faster than shown. Where the bottom comes up to the surface there are shoals, rocks or an islet next to the profile.
Source: NOAA U.S. Coastal Relief Model (public domain), cells of about 300 ft; depth below mean sea level. For reference only: not for navigation or anchoring.
Nearest lighthouse
.jpg)
New London Harbor Light 2.4 mi south
- Light
- White light, on and off for equal times, every 6 s · Iso W 6s
- Range
- 17 nautical miles (20 mi)
- Light height
- 89 ft above sea level
- Tower height
- 89 ft
- Built
- 1760
Other lighthouses nearby: Avery Point Light (2.5 mi south), New London Ledge Light (3.0 mi south).
Data from Wikidata. For reference only: not for navigation. Wikipedia · Wikidata · Sources and licenses
Tides near GrotonTides nearby
- New London1.2 mi
- Long Hill1.4 mi
- Poquonock Bridge2.8 mi
- Groton Long Point4.4 mi
- Noank4.8 mi
- Gales Ferry5.5 mi
- Mystic5.8 mi
- Uncasville6.1 mi
- Niantic6.2 mi
- Old Mystic6.7 mi
Groton at a glance
- Town or city of about 9,221 people. Coordinates: 41.350° N, 72.078° W.
- It is 59 mi east of Bridgeport, the main place in Connecticut. The sun rises 4 min earlier and sets 5 min earlier than in Bridgeport.
- The nearest tide station, New London, is 1.7 mi to the northwest.
- Its coast faces west.
- Beaches and harbors nearby: Ferry Wharf (0.8 mi), State Pier (historical) (0.9 mi), United States Coast Guard Pier (0.9 mi), Green Harbor Beach (1.4 mi).
Questions about GrotonQuestions
What time is high tide today in Groton?
Today in Groton there are high tides at 11:17 am (3.6 ft) and 11:46 pm (2.6 ft) and low tides at 5:15 am and 6:12 pm. Tide coefficient 87.
What time is sunset today in Groton?
At 5:48 pm. There is light until the end of civil twilight, at 6:17 pm.
What time is sunrise tomorrow in Groton?
At 7:16 am. First light comes at 6:15 am.
What phase is the moon today?
Waning gibbous, 91% illuminated. New moon on Mon, Nov 9 · 2:03 am.
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 1:23–3:23 am, Minor 9:56–10:56 am, Major 1:54–3:54 pm, Minor 6:49–7:49 pm. Today's activity is medium.
What's the weather like today in Groton?
Overcast, from 36 °F to 56 °F, with a light air from the south (3 mph) and a 0% chance of rain.
How is the sea today in Groton?
Smooth (Douglas 2): 0.9 ft waves with a period of 6.9 s from the southeast. The water is 59.9 °F.
When is the best time to visit Groton?
The best time to visit Groton is from June to September: highs of 75 °F to 82 °F, about 8 rainy days a month and 7 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 New London (public domain), via Slackwater database. Sun and moon: our own calculation with astronomy-engine. Places: GeoNames (CC BY 4.0). Coastline: © OpenStreetMap contributors (ODbL).