Shannon water temperature

Shannon, Meelick Weir · River

The current water temperature at Shannon is 17.3 °C (as of September 1, 2026, source: official monitoring networks).

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.

17.3 °C

Measured: September 1, 2026 · continuously updated

💧 Water 17.3° · ☀️ Air 15.5° · high today 18.4°

Temperature trend of recent weeks

Shannon — Photo: Jonathan Thacker · CC BY-SA 2.0 · Wikimedia Commons

Measurement series & statistics

This measurement series includes 1434 data points since July 3, 2026.

Lowest recorded value: 17.0 °C on August 24, 2026 · highest value: 23.8 °C on July 17, 2026.

In September, temperatures have ranged between 17.3 °C and 17.6 °C.

The current value is 0.1 °C below the September average of this series.

Nearby waters

Canal, Victoria Lock · 0.9 km away18.2 °C Shannon, Banagher · 5.8 km away15.5 °C Little Brosna, New Bridge Little Brosna · 8.3 km away15.0 °C Shannon, Derryholmes · 9.4 km away14.7 °C Shannon, Shannonbridge · 11.7 km away18.2 °C

More measuring points: Shannon

Athlone19.3 °C Shannonbridge18.2 °C Portumna Bridge18.0 °C Jamestown17.8 °C Carrick-On-Shannon17.6 °C Banagher15.5 °C

Frequently asked questions

Can you swim at Shannon right now?
The current water temperature is 17.3 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Shannon?
Currently 17.3 °C (updated continuously).

How warm is at Shannon in September?
In September, the water temperature recently averaged 17.4 °C.

When is the water warmest at Shannon?
Across the measurement record, July is on average the warmest month (20.6 °C).

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