Water Temperature of Delaware Bay in Greenwich, NJ

Current Water Temperature

37.0°F

Measurement Time: Sunday, January 18, 2026, 8:24 AM EST

Today's Tides

Low: January 18, 3:21 AM, -0.2 ft
 High: January 18, 9:27 AM, 5.7 ft
Low: January 18, 4:11 PM, -0.2 ft
 High: January 18, 9:52 PM, 4.6 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

34°F
Light rain
Light rain
26.8°F
33.1°F
96%
NNW 8.7 mph
13.1 mph
25.5°F
20.8°F
0 in
100%
4 mi
1017 mbar
0.1

Five Day Weather Forecast

Heavy snow
Sun
H: 34°F
L: 24°F
Patchy moderate snow
Mon
H: 29°F
L: 20°F
Sunny
Tue
H: 23°F
L: 14°F
Sunny
Wed
H: 19°F
L: 11°F
Light freezing rain
Thu
H: 32°F
L: 20°F

Air Quality

Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:18 AM
Sun Transit: 12:12 AM
Sunset: 5:06 PM
Daylight: 9 hrs 48 mins
Moonrise: 7:29 AM
Moon Transit: 12:09 AM
Moonset: 4:55 PM
Moon Phase: New
Moon Illumination: 2.5%

Best Times for Fishing or Hunting

Major Periods

1:15 AM - 3:45 AM
11:39 AM - 2:09 PM

Minor Periods

4:25 PM - 5:55 PM
6:59 AM - 8:29 AM

Action Rating: 4 out of 5

Winter Weather Advisory issued January 17 at 2:42PM EST until January 18 at 8:00PM EST by NWS Mount Holly NJ

Effective: Sat January 17, 2026, 2:42 PM
Expires: Sun January 18, 2026, 3:45 AM

* WHAT...Snow expected. Total snow accumulations between 1 and 3 inches. * WHERE...Portions of northern Delaware, southern New Jersey, and southeast Pennsylvania. * WHEN...From 6 AM to 8 PM EST Sunday. * IMPACTS...Plan on slippery road conditions. * ADDITIONAL DETAILS...Snow may mix with rain for a time at the onset Sunday morning before becoming all snow by Sunday afternoon.

Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1.


Winter Weather Advisory issued January 18 at 1:07AM EST until January 18 at 8:00PM EST by NWS Mount Holly NJ

Effective: Sun January 18, 2026, 1:07 AM
Expires: Sun January 18, 2026, 4:00 PM

* WHAT...Snow expected. Total snow accumulations between 2 to 4 inches. * WHERE...Portions of northern Delaware, southern New Jersey, and southeast Pennsylvania. * WHEN...From 6 AM this morning to 8 PM EST this evening. * IMPACTS...Plan on slippery road conditions.

Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1.


Winter Weather Advisory issued January 18 at 12:51AM EST until January 18 at 6:00PM EST by NWS Baltimore MD/Washington DC

Effective: Sun January 18, 2026, 12:51 AM
Expires: Sun January 18, 2026, 9:00 AM

* WHAT...Snow expected. Snow expected. Total snow accumulations of 1 to 3 inches. * WHERE...Washington DC, and portions of central, north-central, northeast, and northern Maryland, and northern Virginia. * WHEN...From 4 AM early this morning to 6 PM EST this evening. * IMPACTS...Plan on slippery road conditions. * ADDITIONAL DETAILS...Snow, possibly mixed with rain for a few hours, will spread into the area early this morning with the highest accumulations in the northwest suburbs. There may be some breaks in the snow during the midday hours before additional snow falls in the afternoon, mainly east of Interstate 95. Visibility may drop to one half mile at times in moderate snow. The snow should end during the late afternoon or early evening.

Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1.


Winter Weather Advisory issued January 18 at 6:50AM EST until January 18 at 6:00PM EST by NWS Baltimore MD/Washington DC

Effective: Sun January 18, 2026, 6:50 AM
Expires: Sun January 18, 2026, 3:00 PM

* WHAT...Snow. Total snow accumulations of 1 to 3 inches, highest over northeastern Maryland. * WHERE...Portions of central, north-central, northeast, and northern Maryland. * WHEN...Until 6 PM EST this evening. * IMPACTS...Plan on slippery road conditions. * ADDITIONAL DETAILS...Snow this morning will taper off between 8 and 10 AM. Additional snow will affect areas mainly near and east of Baltimore this afternoon, then end early this evening.

Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1.
Sunday, January 18, 2026

Weather Forecast

Heavy snow
33.9°F
24°F
30.4°F
78%
0.5 in
86%
35%
17.9 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 11.49 μg/m3
PM10: 11.91 μg/m3
Carbon Monoxide: 230.93 μg/m3
Nitrogen Dioxide: 18.85 μg/m3
Sulphur Dioxide: 6.15 μg/m3
Ozone: 40.85 μg/m3

Astronomical

Sunrise: 7:18 AM
Sun Transit: 12:12 AM
Sunset: 5:06 PM
Daylight: 9 hrs 48 mins
Moonrise: 7:29 AM
Moon Transit: 12:09 AM
Moonset: 4:55 PM
Moon Phase: New
Moon Illumination: 2.5%

Best Times for Fishing or Hunting

Major Periods

1:15 AM - 3:45 AM
11:39 AM - 2:09 PM

Minor Periods

4:25 PM - 5:55 PM
6:59 AM - 8:29 AM

Action Rating: 4 out of 5

Monday, January 19, 2026

Weather Forecast

Patchy moderate snow
28.5°F
20.4°F
23.5°F
81%
0.03 in
70%
14%
19.7 mph
0


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: 7:18 AM
Sun Transit: 12:12 AM
Sunset: 5:07 PM
Daylight: 9 hrs 49 mins
Moonrise: 8:03 AM
Moon Transit: 12:58 AM
Moonset: 6:02 PM
Moon Phase: New
Moon Illumination: 0.4%

Best Times for Fishing or Hunting

Major Periods

2:05 AM - 4:35 AM
12:28 AM - 2:58 PM

Minor Periods

5:32 PM - 7:02 PM
7:33 AM - 9:03 AM

Action Rating: 5 out of 5

Tuesday, January 20, 2026

Weather Forecast

Sunny
23.3°F
13.9°F
19.2°F
71%
0 in
0%
0%
22.1 mph
2


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: 7:17 AM
Sun Transit: 12:12 AM
Sunset: 5:08 PM
Daylight: 9 hrs 51 mins
Moonrise: 8:32 AM
Moon Transit: 1:46 PM
Moonset: 7:09 PM
Moon Phase: New
Moon Illumination: 3.1%

Best Times for Fishing or Hunting

Major Periods

2:53 AM - 5:23 AM
1:16 PM - 3:46 PM

Minor Periods

6:39 PM - 8:09 PM
8:02 AM - 9:32 AM

Action Rating: 3 out of 5

Wednesday, January 21, 2026

Weather Forecast

Sunny
19.1°F
10.5°F
15°F
67%
0 in
0%
0%
17.7 mph
2


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: 7:17 AM
Sun Transit: 12:12 AM
Sunset: 5:09 PM
Daylight: 9 hrs 53 mins
Moonrise: 8:57 AM
Moon Transit: 2:31 PM
Moonset: 8:16 PM
Moon Phase: Waxing Crescent
Moon Illumination: 8.1%

Best Times for Fishing or Hunting

Major Periods

3:39 AM - 6:09 AM
2:01 PM - 4:31 PM

Minor Periods

7:46 PM - 9:16 PM
8:27 AM - 9:57 AM

Action Rating: 2 out of 5

Thursday, January 22, 2026

Weather Forecast

Light freezing rain
32.2°F
20.2°F
25.8°F
76%
0.01 in
69%
26%
17.2 mph
1


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: 7:16 AM
Sun Transit: 12:13 AM
Sunset: 5:10 PM
Daylight: 9 hrs 54 mins
Moonrise: 9:20 AM
Moon Transit: 12:00 AM
Moonset: 9:22 PM
Moon Phase: Waxing Crescent
Moon Illumination: 15.4%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
4:24 AM - 6:54 AM

Minor Periods

8:52 PM - 10:22 PM
8:50 AM - 10:20 AM

Action Rating: 3 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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