Water Temperature of Delaware Bay in Greenwich, NJ

Current Water Temperature

40.8°F

Measurement Time: Tuesday, March 10, 2026, 12:42 AM EDT

Today's Tides

 High: March 10, 3:13 AM, 5.4 ft
Low: March 10, 9:58 AM, 0.5 ft
 High: March 10, 3:47 PM, 4.5 ft
Low: March 10, 9:54 PM, 0.6 ft

Temperature Locations

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Local Points of Interest

Ship John Shoal Lighthouse; Bombay Hook National Wildlife Refuge; Bridgeton, NJ; Sea Breeze, NJ; Smyrna, DE; Dover, DE

Delaware Bay

Station Name: Ship John Shoal
Data Source: NOAA Tides and Currents

Elevation Above Sea Level: 0 feet

Sensor Depth: -2 feet

Nearest Address:
Ship John Shoal Lighthouse
Greenwich, NJ 08323
Cumberland County

GPS Coordinates: 39.30500, -75.37500

Nearby Water Temperatures

St. Jones River, Dover, DE (12.4 mi)
Appoquinimink River, Odessa, DE (16.9 mi)
Delaware River, Middletown, DE (17 mi)
Silver Lake Tributary, Townsend, DE (19.9 mi)
Chesapeake & Delaware Canal, Port Penn, DE (20.4 mi)
Murderkill River, Frederica, DE (20.8 mi)
Chesapeake and Delaware Canal, Delaware City, DE (21.6 mi)
Delaware River, New Castle, DE (27.7 mi)
Chesapeake & Delaware Canal, Chesapeake City, MD (27.8 mi)
Beaverdam Branch, Houston, DE (28.6 mi)
Christina River, Newark, DE (29.7 mi)
Christina River, Newport, DE (30.7 mi)
Christina River, Wilmington, DE (31.1 mi)
White Clay Creek, Stanton, DE (31.2 mi)
White Clay Creek, Newark, DE (31.6 mi)

Weather for Greenwich, New Jersey

Current Weather

46.9°F
Mist
Mist
43.7°F
52.6°F
100%
S 6.5 mph
13.6 mph
51.4°F
51.9°F
0 in
50%
1 mi
1018 mbar
0

Five Day Weather Forecast

Cloudy
Tue
H: 70°F
L: 49°F
Patchy rain nearby
Wed
H: 67°F
L: 46°F
Overcast
Thu
H: 64°F
L: 35°F
Sunny
Fri
H: 48°F
L: 31°F
Sunny
Sat
H: 50°F
L: 41°F

Air Quality

PM2.5: 24.75 μg/m3
PM10: 25.05 μg/m3
Carbon Monoxide: 208.85 μg/m3
Nitrogen Dioxide: 9.55 μg/m3
Sulphur Dioxide: 3.05 μg/m3
Ozone: 52 μg/m3

Astronomical

Sunrise: 7:20 AM
Sun Transit: 12:00 AM
Sunset: 7:03 PM
Daylight: 11 hrs 43 mins
Moonrise: 1:44 AM
Moon Transit: 6:15 AM
Moonset: 10:44 AM
Moon Phase: Last Quarter
Moon Illumination: 47.2%

Best Times for Fishing or Hunting

Major Periods

5:45 AM - 8:15 AM
8:12 PM - 10:42 PM

Minor Periods

10:14 AM - 11:44 AM
1:14 AM - 2:44 AM

Action Rating: 2 out of 5

Dense Fog Advisory issued March 9 at 7:33PM EDT until March 10 at 10:00AM EDT by NWS Mount Holly NJ

Effective: Mon March 9, 2026, 7:33 PM
Expires: Tue March 10, 2026, 8:45 AM

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...In Delaware, Kent and Inland Sussex Counties. In Maryland, Talbot County. In New Jersey, Western Monmouth, Atlantic, Cumberland, Ocean, and Southeastern Burlington Counties. * WHEN...From midnight tonight to 10 AM EDT Tuesday. * IMPACTS...Low visibility could make driving conditions hazardous.

If driving, slow down, use your headlights, and leave plenty of distance ahead of you.


Dense Fog Advisory issued March 9 at 7:33PM EDT until March 10 at 10:00AM EDT by NWS Mount Holly NJ

Effective: Mon March 9, 2026, 7:33 PM
Expires: Tue March 10, 2026, 8:45 AM

* WHAT...Visibility one quarter to one half mile in dense fog. * WHERE...Portions of northern Delaware, northeast Maryland, central, northern, and southern New Jersey, and southeast Pennsylvania. * WHEN...From 2 AM to 10 AM EDT Tuesday. * IMPACTS...Low visibility could make driving conditions hazardous.

If driving, slow down, use your headlights, and leave plenty of distance ahead of you.


Dense Fog Advisory issued March 9 at 7:33PM EDT until March 10 at 10:00AM EDT by NWS Mount Holly NJ

Effective: Mon March 9, 2026, 7:33 PM
Expires: Tue March 10, 2026, 8:45 AM

* WHAT...Visibility one quarter to one half mile in dense fog. * WHERE...In Delaware, Delaware Beaches County. In New Jersey, Eastern Monmouth, Atlantic Coastal Cape May, Cape May, Coastal Atlantic, and Coastal Ocean Counties. * WHEN...Until 10 AM EDT Tuesday. * IMPACTS...Low visibility could make driving conditions hazardous.

If driving, slow down, use your headlights, and leave plenty of distance ahead of you.
Tuesday, March 10, 2026

Weather Forecast

Cloudy
70.3°F
48.6°F
55.9°F
89%
0 in
0%
0%
7.8 mph
1.1


Air Quality

AQI: 2 - Moderate
PM2.5: 19.73 μg/m3
PM10: 20.09 μg/m3
Carbon Monoxide: 205.53 μg/m3
Nitrogen Dioxide: 14.24 μg/m3
Sulphur Dioxide: 5.01 μg/m3
Ozone: 60.08 μg/m3

Astronomical

Sunrise: 7:20 AM
Sun Transit: 12:00 AM
Sunset: 7:03 PM
Daylight: 11 hrs 43 mins
Moonrise: 1:44 AM
Moon Transit: 6:15 AM
Moonset: 10:44 AM
Moon Phase: Last Quarter
Moon Illumination: 47.2%

Best Times for Fishing or Hunting

Major Periods

5:45 AM - 8:15 AM
8:12 PM - 10:42 PM

Minor Periods

10:14 AM - 11:44 AM
1:14 AM - 2:44 AM

Action Rating: 2 out of 5

Wednesday, March 11, 2026

Weather Forecast

Patchy rain nearby
67.3°F
45.9°F
55.2°F
93%
0.14 in
73%
0%
18.6 mph
1


Air Quality

AQI: 1 - Good
PM2.5: 14.3 μg/m3
PM10: 14.43 μg/m3
Carbon Monoxide: 186.13 μg/m3
Nitrogen Dioxide: 9.18 μg/m3
Sulphur Dioxide: 2.81 μg/m3
Ozone: 68.12 μg/m3

Astronomical

Sunrise: 7:19 AM
Sun Transit: 12:00 AM
Sunset: 7:04 PM
Daylight: 11 hrs 46 mins
Moonrise: 2:43 AM
Moon Transit: 7:06 AM
Moonset: 11:30 AM
Moon Phase: Last Quarter
Moon Illumination: 36.0%

Best Times for Fishing or Hunting

Major Periods

6:36 AM - 9:06 AM
9:03 PM - 11:33 PM

Minor Periods

11:00 AM - 12:30 AM
2:13 AM - 3:43 AM

Action Rating: 2 out of 5

Thursday, March 12, 2026

Weather Forecast

Overcast
63.6°F
35.1°F
50.9°F
74%
0 in
0%
0%
22.4 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 5.91 μg/m3
PM10: 5.95 μg/m3
Carbon Monoxide: 160.82 μg/m3
Nitrogen Dioxide: 5.73 μg/m3
Sulphur Dioxide: 2.93 μg/m3
Ozone: 76.24 μg/m3

Astronomical

Sunrise: 7:17 AM
Sun Transit: 12:00 AM
Sunset: 7:05 PM
Daylight: 11 hrs 48 mins
Moonrise: 3:35 AM
Moon Transit: 7:58 AM
Moonset: 12:24 AM
Moon Phase: Last Quarter
Moon Illumination: 25.6%

Best Times for Fishing or Hunting

Major Periods

7:28 AM - 9:58 AM
12:00 AM - 12:00 AM

Minor Periods

11:54 AM - 1:24 PM
3:05 AM - 4:35 AM

Action Rating: 3 out of 5

Friday, March 13, 2026

Weather Forecast

Sunny
47.6°F
31.1°F
38.8°F
55%
0 in
0%
0%
21.9 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 3.58 μg/m3
PM10: 4.06 μg/m3
Carbon Monoxide: 178.73 μg/m3
Nitrogen Dioxide: 6.67 μg/m3
Sulphur Dioxide: 3.73 μg/m3
Ozone: 82.92 μg/m3

Astronomical

Sunrise: 7:16 AM
Sun Transit: 12:00 AM
Sunset: 7:06 PM
Daylight: 11 hrs 51 mins
Moonrise: 4:21 AM
Moon Transit: 8:50 AM
Moonset: 1:24 PM
Moon Phase: Waning Crescent
Moon Illumination: 16.4%

Best Times for Fishing or Hunting

Major Periods

8:20 AM - 10:50 AM
12:00 AM - 12:00 AM

Minor Periods

12:54 AM - 2:24 PM
3:51 AM - 5:21 AM

Action Rating: 2 out of 5

Saturday, March 14, 2026

Weather Forecast

Sunny
49.5°F
40.5°F
45.1°F
52%
0 in
0%
0%
20.8 mph
3


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 12:00 AM
Sunset: 7:07 PM
Daylight: 11 hrs 53 mins
Moonrise: 4:59 AM
Moon Transit: 9:41 AM
Moonset: 2:29 PM
Moon Phase: Waning Crescent
Moon Illumination: 8.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:11 AM - 11:41 AM

Minor Periods

1:59 PM - 3:29 PM
4:29 AM - 5:59 AM

Action Rating: 2 out of 5

The times presented here are based upon the solunar theory, which is the idea that the movements of fish and other animals are affected by the location of the sun and moon. The major periods are believed to be the times of the greatest animal activity and occur when the moon is directly overhead or underfoot (lunar transits). The minor periods also see increased activity and occur when the moon is rising or setting. The strongest activity occurs during full or new moons, and the weakest during quarter or three quarter moons. This is indicated by the Action Rating.

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