New Jersey Water Temperatures
Current lake & river temperatures in New Jersey — updated daily from USGS sensors.
New Jersey — Ranked by Temperature
87 with data| # | Water Body | °F | °C | Condition | 🏊 | Date |
|---|---|---|---|---|---|---|
| 1 | Salem River At Woodstown Nj River | 81.5° | 27.5° | ☀️ Warm | 🏊 Excellent | Jul 26 |
| 2 | Delaware Bay At Ship John Shoal Lighthouse Nj Lake | 77.9° | 25.5° | ☀️ Warm | ✅ Good | Jul 13 |
| 3 | Pompton River At Pompton Plains Nj River | 77.5° | 25.3° | ☀️ Warm | ✅ Good | Jul 22 |
| 4 | Mantua Creek At East Holly Avenue At Pitman Nj River | 76.8° | 24.9° | ☀️ Warm | ✅ Good | Aug 11 |
| 5 | Stony Brook At Princeton Nj River | 75.9° | 24.4° | ☀️ Warm | ✅ Good | Aug 30 |
| 6 | Neshanic River At Reaville Nj River | 75.7° | 24.3° | ☀️ Warm | ✅ Good | Jul 16 |
| 7 | Raritan River At Manville Nj River | 74.8° | 23.8° | 🌤️ Comfortable | ✅ Good | Jun 4 |
| 8 | North Branch Big Timber Creek At Glendora Nj River | 74.1° | 23.4° | 🌤️ Comfortable | ✅ Good | Sep 9 |
| 9 | Ramapo River At Pompton Lakes Nj River | 73.9° | 23.3° | 🌤️ Comfortable | ✅ Good | Jun 4 |
| 10 | Blacks C At Chesterfield Nj Lake | 73.6° | 23.1° | 🌤️ Comfortable | ✅ Good | Aug 19 |
| 11 | Raccoon Creek At Wrights Mill Nj River | 72.9° | 22.7° | 🌤️ Comfortable | ✅ Good | Jun 4 |
| 12 | Bound Brook At Route 28 At Middlesex Nj River | 72.7° | 22.6° | 🌤️ Comfortable | ✅ Good | Jul 12 |
| 13 | Cooper River At Haddonfield Nj River | 72.7° | 22.6° | 🌤️ Comfortable | ✅ Good | Jun 4 |
| 14 | Passaic River Below Pompton Riv At Two Bridges Nj River | 72.5° | 22.5° | 🌤️ Comfortable | ✅ Good | Jun 4 |
| 15 | Delaware River At Marine Terminal At Trenton Nj River | 72.3° | 22.4° | 🌤️ Comfortable | ✅ Good | Jun 4 |
| 16 | Millstone River At Blackwells Mills Nj River | 72.3° | 22.4° | 🌤️ Comfortable | ✅ Good | Jun 4 |
| 17 | Southwest Branch Rancocas Creek At Medford Nj River | 72° | 22.2° | 🌤️ Comfortable | ✅ Good | Jun 4 |
| 18 | Paulins Kill At Warbasse Jct Rd Near Lafayette Nj Lake | 71.8° | 22.1° | 🌤️ Comfortable | ⚠️ Brisk | Jul 23 |
| 19 | Del And Rar Ca Feeder At Washington Crossing Nj Lake | 71.8° | 22.1° | 🌤️ Comfortable | ⚠️ Brisk | Jun 4 |
| 20 | Rancocas Creek At Bridgeboro Nj River | 71.6° | 22° | 🌤️ Comfortable | ⚠️ Brisk | Jun 4 |
| 21 | Crosswicks Creek At Extonville Nj River | 71.6° | 22° | 🌤️ Comfortable | ⚠️ Brisk | Jun 4 |
| 22 | Rahway River At Rahway Nj River | 71.4° | 21.9° | 🌤️ Comfortable | ⚠️ Brisk | Jul 15 |
| 23 | Del & Rar Canal At Landing La At New Brunswick Nj River | 70.9° | 21.6° | 🌤️ Comfortable | ⚠️ Brisk | Jun 4 |
| 24 | Delaware River At Frenchtown Nj River | 70.9° | 21.6° | 🌤️ Comfortable | ⚠️ Brisk | Jun 4 |
| 25 | Hammonton Creek At Wescoatville Nj River | 70.7° | 21.5° | 🌤️ Comfortable | ⚠️ Brisk | Aug 22 |
More New Jersey Resources
❓ New Jersey Water Temperature FAQ
What is the warmest lake in New Jersey today?
Based on our latest USGS data, Salem River At Woodstown Nj is currently the warmest water body in New Jersey at 81.5°F.
Which New Jersey lakes are good for swimming right now?
Lakes with water temperatures above 72°F are generally comfortable for swimming. Currently, New Jersey's average water temperature is 64.6°F — check individual lakes above for specific conditions.
What is the best water temperature for fishing in New Jersey?
The optimal temperature range depends on your target species. For bass fishing, look for water bodies between 65–75°F. For trout, target the coldest water bodies in New Jersey — typically 50–65°F. Use the table above to identify which lakes are in the ideal range for your target species.
🔬 Data Methodology & Sources
Water temperature readings on this site are collected from USGS (United States Geological Survey) monitoring stations installed at lakes, rivers, and reservoirs across the country. Sensors measure water surface temperature in Celsius, which is converted to Fahrenheit for display. Data is retrieved and stored daily. Temperatures shown reflect the most recent available sensor reading for each water body, typically from the past 1–30 days depending on station reporting frequency.
⚠️ Water temperatures can vary significantly across a water body due to depth, currents, and time of day. Sensor readings represent conditions at the monitoring station location. Always exercise caution when swimming and consult local authorities for official safety advisories.