Delaware Water Temperatures
Current lake & river temperatures in Delaware — updated daily from USGS sensors.
Delaware — Ranked by Temperature
22 with data| # | Water Body | °F | °C | Condition | 🏊 | Date |
|---|---|---|---|---|---|---|
| 1 | Brandywine Creek At Wilmington, De River | 77.9° | 25.5° | ☀️ Warm | ✅ Good | Jul 20 |
| 2 | St Jones River At Dover, De River | 75° | 23.9° | ☀️ Warm | ✅ Good | Jun 4 |
| 3 | Millsboro Pond Outlet At Millsboro, De Lake | 73.9° | 23.3° | 🌤️ Comfortable | ✅ Good | Jun 4 |
| 4 | St Jones River At Lebanon, De River | 73° | 22.8° | 🌤️ Comfortable | ✅ Good | May 19 |
| 5 | Murderkill River At Frederica, De River | 72.9° | 22.7° | 🌤️ Comfortable | ✅ Good | Jun 4 |
| 6 | Broadkill River Near Milton, De River | 72.7° | 22.6° | 🌤️ Comfortable | ✅ Good | Jun 4 |
| 7 | St Jones River Near Magnolia, De River | 71.4° | 21.9° | 🌤️ Comfortable | ⚠️ Brisk | May 19 |
| 8 | White Clay Creek At Stanton, De River | 70.7° | 21.5° | 🌤️ Comfortable | ⚠️ Brisk | Jun 4 |
| 9 | White Clay Creek Near Newark, De River | 70.5° | 21.4° | 🌤️ Comfortable | ⚠️ Brisk | Jun 4 |
| 10 | C And D Canal Nr Delaware City, De River | 70.5° | 21.4° | 🌤️ Comfortable | ⚠️ Brisk | Jun 4 |
| 11 | Christina River At Wilmington, De River | 70.5° | 21.4° | 🌤️ Comfortable | ⚠️ Brisk | Jun 4 |
| 12 | Bucks Branch Ds Of Conrail Rd At Cannon, De Lake | 69.6° | 20.9° | 🌤️ Comfortable | ⚠️ Brisk | Jun 4 |
| 13 | White Clay Creek At Newark, De River | 69.4° | 20.8° | 🌤️ Comfortable | ⚠️ Brisk | Jun 4 |
| 14 | Delaware River At Del Mem Bridge At Wilmington De River | 69.4° | 20.8° | 🌤️ Comfortable | ⚠️ Brisk | Jun 4 |
| 15 | Red Clay Creek At Wooddale, De River | 69.1° | 20.6° | 🌤️ Comfortable | ⚠️ Brisk | Jun 4 |
| 16 | Nanticoke River Near Bridgeville, De River | 68.7° | 20.4° | 🌤️ Comfortable | ⚠️ Brisk | Sep 29 |
| 17 | Christina River At Coochs Bridge, De River | 67.8° | 19.9° | 🌤️ Comfortable | ⚠️ Brisk | Jun 4 |
| 18 | Pike Creek Near Newark, De River | 65.8° | 18.8° | 🌤️ Comfortable | ⚠️ Brisk | Jun 4 |
| 19 | Beaverdam Branch At Houston, De Reservoir | 63.9° | 17.7° | 🌊 Cool | 🚫 Cold | Jun 4 |
| 20 | Murderkill River At Bowers, De River | 61.3° | 16.3° | 🌊 Cool | 🚫 Cold | May 3 |
| 21 | Silver Lake Tributary At Middletown, De Lake | 61.2° | 16.2° | 🌊 Cool | 🚫 Cold | Jun 4 |
| 22 | Christina River At Newport, De River | 46.9° | 8.3° | ❄️ Cold | ⛔ Very cold | Feb 28 |
| 23 | Delaware River At New Castle, De River | — | — | — | — | — |
| 24 | Assawoman Canal At Central Ave At Ocean View, De River | — | — | — | — | — |
| 25 | Calf Run At Marshallton, De Lake | — | — | — | — | — |
More Delaware Resources
❓ Delaware Water Temperature FAQ
What is the warmest lake in Delaware today?
Based on our latest USGS data, Brandywine Creek At Wilmington, De is currently the warmest water body in Delaware at 77.9°F.
Which Delaware lakes are good for swimming right now?
Lakes with water temperatures above 72°F are generally comfortable for swimming. Currently, Delaware's average water temperature is 68.7°F — check individual lakes above for specific conditions.
What is the best water temperature for fishing in Delaware?
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 Delaware — 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.