Delaware River water temperature

Delaware River, Chester, Pennsylvania · River

The current water temperature at Delaware River is 16.3 °C (as of November 5, 2026, source: USGS).

A river can change temperature within hours — snowmelt, rain or power-plant operations show up immediately. That is why the measured value counts here, not an estimate.

16.3 °C

Measured: November 5, 2026 · continuously updated

💧 Water 16.3° · ☀️ Air 21.0°

Temperature trend of recent weeks

Measurement series & statistics

This measurement series includes 348 data points since September 7, 2026.

Lowest recorded value: 15.4 °C on November 3, 2026 · highest value: 26.4 °C on September 9, 2026.

In November, temperatures have ranged between 15.4 °C and 16.4 °C.

The current value is 0.5 °C above the November average of this series.

Nearby waters

Delaware River, Marcus Hook, Pennsylvania · 4.6 km away16.2 °C Atlantic, Marcus Hook · 4.6 km away16.3 °C Atlantic, Marcus Hook, PA · 5.2 km away16.4 °C Darby Creek, Darby, Pennsylvania · 13.0 km away15.4 °C Raccoon Creek, Swedesboro, New Jersey · 14.1 km away16.0 °C

More measuring points: Delaware River

Del Mem Bridge at Wilmington, Delaware16.2 °C Marcus Hook, Pennsylvania16.2 °C Fort Mifflin at Philadelphia, Pennsylvania15.9 °C Pennypack Woods, Pennsylvania14.7 °C Marine Terminal at Trenton, New Jersey14.6 °C Trenton, New Jersey14.5 °C

Frequently asked questions

Can you swim at Delaware River right now?
The current water temperature is 16.3 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Delaware River?
Currently 16.3 °C (updated continuously).

How warm is at Delaware River in November?
In November, the water temperature recently averaged 15.8 °C.

When is the water warmest at Delaware River?
Across the measurement record, September is on average the warmest month (23.6 °C).

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