Water Temperature of Delaware Bay in Greenwich, NJ

Current Water Temperature

61.0°F 16.1°C
Cool Brisk & Refreshing
61.0°F
Frigid < 50°F
Cold 50°–60°
Cool 60°–70°
Comfortable 70°–80°
Warm 80°+

Feels brisk on entry. Great for short dips; wetsuit recommended for extended swimming or water sports.

Measurement Time: Friday, November 6, 2026, 5:12 AM EST

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

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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

65.1°F
Light rain shower
Conditions: Light rain shower
Humidity: 98%
Feels Like: 66.2°F
Wind: SSW 7.2 mph
Wind Gusts: 19.5 mph
Pressure: 29.86 in
Precipitation: 0.04 in
Cloud Cover: 100%
Visibility: 6 mi
UV Index: 0

Weather Forecast

Light rain shower
Fri
H: 66°F
L: 56°F
Sunny
Sat
H: 56°F
L: 45°F
Sunny
Sun
H: 60°F
L: 45°F

Air Quality

EPA Index 1 • Good

Air quality is satisfactory, and air pollution poses little or no risk.

PM2.5
2.3 μg/m³
Good
PM10
2.7 μg/m³
Good
Ozone (O3)
55 μg/m³
Photochemical
NO2
7.8 μg/m³
Nitrogen Dioxide
SO2
0.6 μg/m³
Sulfur Dioxide
CO
128 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 20m daylight
Sunrise 6:35 AM
Solar Noon 11:45 AM
Sunset 4:55 PM
Moon
Waning Crescent • 5%
Moonrise 3:54 AM
Transit 9:40 AM
Moonset 3:17 PM

Best Times for Fishing or Hunting

Major Periods

9:10 AM - 11:40 AM
9:32 PM - 12:02 AM

Minor Periods

3:24 AM - 4:54 AM
2:47 PM - 4:17 PM
Action Rating:
Fair Action 2/5
Friday, November 6, 2026

Weather Forecast

Conditions: Light rain shower
Average Temperature: 63°F
Average Humidity: 92%
Chance of Rain: 90%
Wind: 9.6 mph
UV Index: 0.7

Astronomical

Sun
10h 20m daylight
Sunrise 6:35 AM
Solar Noon 11:45 AM
Sunset 4:55 PM
Moon
Waning Crescent • 5%
Moonrise 3:54 AM
Transit 9:40 AM
Moonset 3:17 PM

Best Times for Fishing or Hunting

Major Periods

9:10 AM - 11:40 AM
9:32 PM - 12:02 AM

Minor Periods

3:24 AM - 4:54 AM
2:47 PM - 4:17 PM
Action Rating:
Fair Action 2/5
Saturday, November 7, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 51.5°F
Average Humidity: 63%
Chance of Rain: 5%
Wind: 16.1 mph
UV Index: 2.8

Astronomical

Sun
10h 17m daylight
Sunrise 6:36 AM
Solar Noon 11:45 AM
Sunset 4:54 PM
Moon
Waning Crescent • 1%
Moonrise 4:59 AM
Transit 10:24 AM
Moonset 3:42 PM

Best Times for Fishing or Hunting

Major Periods

9:54 AM - 12:24 PM
10:17 PM - 12:47 AM

Minor Periods

4:29 AM - 5:59 AM
3:12 PM - 4:42 PM
Action Rating:
Good Action 3/5
Sunday, November 8, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 51.7°F
Average Humidity: 68%
Chance of Rain: 7%
Wind: 14.5 mph
UV Index: 2.7

Astronomical

Sun
10h 15m daylight
Sunrise 6:38 AM
Solar Noon 11:45 AM
Sunset 4:53 PM
Moon
New • 0%
Moonrise 6:04 AM
Transit 11:10 AM
Moonset 4:10 PM

Best Times for Fishing or Hunting

Major Periods

10:40 AM - 1:10 PM
11:04 PM - 1:34 AM

Minor Periods

5:34 AM - 7:04 AM
3:40 PM - 5:10 PM
Action Rating:
Peak Action 5/5
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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