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Lucan — Current Water Temperature, Annual Trends and Forecast

This page provides information on the current water temperature in Lucan, trends, monthly ranges and the forecast for the coming days.

River Liffey, Republic of Ireland
River Liffey, Republic of Ireland © By Dave Meier, CC0

Current Water Temperature

13.1°C
Today
13.0°C
Yesterday
14.5°C
A Week Ago
Get instant access to real-time water temperatures for this and all other locations with our iOS and Android apps.

Water Temperature in Lucan today is 13.1°C.

Water Temperature: Daily Trends, Historical Records, and Forecast

⚠️ As of today, the minimum water temperature ranges from 54°F (12°C) to 60°F (15°C). The water is significantly warmer, and swimming becomes possible for most people. However, caution may still be required for prolonged stays in the water, as extended exposure can cause discomfort. This is a suitable temperature range for short swims and for those accustomed to cooler water. For more comfortable swimming, it is recommended to use proper gear. It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.

Water Temperature Chart Over the Last 30 Days

From May 10 to June 10

Table of Daily Sea Temperature Data

Date Current Average Forecast
JUN 313.8°C18.4°C
JUN 413.9°C18.4°C
JUN 514.3°C18.4°C
JUN 614.0°C18.4°C
JUN 713.3°C18.4°C
JUN 813.0°C18.4°C
JUN 1013.1°C18.4°C
JUN 1118.4°C13.4°C
JUN 1218.4°C13.6°C
JUN 1318.4°C13.9°C
JUN 1418.4°C14.2°C
JUN 1518.4°C14.4°C
JUN 1618.4°C14.7°C
JUN 1718.4°C15.0°C

* Current - Actual water temperature value

** Average - Average water temperature on this day in recent years

*** Forecast - Our water temperature forecast

Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.

Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts to enhance accuracy.

Monthly Water Temperature Range (Min, Max & Average)

Month Min Avg Max
January1°C5°C8°C
February1°C5°C8°C
March2°C6°C9°C
April6°C9°C12°C
May9°C14°C18°C
June13°C18°C23°C
July15°C19°C24°C
August14°C18°C23°C
September11°C16°C20°C
October9°C12°C15°C
November4°C8°C11°C
December1°C5°C9°C

Lucan: Weather Forecast

June 9

° / °
slight rain
rain: 99% | wind:

June 10

° / °
light drizzle
rain: 95% | wind:

June 11

° / °
slight rain
rain: 84% | wind:

June 12

° / °
light drizzle
rain: 29% | wind:

June 13

° / °
overcast
rain: 6% | wind:

June 14

° / °
partly cloudy
rain: 6% | wind:

Location & Local Information

The segment of the River Liffey flowing through Lucan, on the western fringe of Dublin, is a characteristic cool-temperature Irish river. The water temperature typically ranges from a low of about 7∘C (45∘F) in the peak of winter, rising to a maximum summer average of around 15∘C (59∘F). This consistent chill makes it unappealing for casual bathers and poses a risk of cold shock for those unprepared.

Swimming is generally discouraged and not officially permitted in this area of the Liffey, particularly near the dangerous Lucan Weir. Local authorities actively remind the public that the river is not tested to bathing water standards, citing concerns over potential water quality issues from urban and agricultural run-off, as well as the inherent dangers of strong currents, deep water, and weirs. The river at Lucan is, however, widely used for water sports like canoeing and hosts part of the famous annual Liffey Descent race. For attractions on dry land, visitors can explore the village's historic charm, the sprawling green space of Lucan Demesne Park, or visit the nearby Castletown House.

Nearby Locations

Frequently Asked Questions

What is the current water temperature in Lucan?
Water Temperature in Lucan today is 13.1°C.
What is the water temperature in Lucan during the summer months?
The water temperature in Lucan in summer fluctuates in the range of 13°C - 24°C.
Is it possible to swim in Lucan (Republic of Ireland) in River Liffey and what are the possibilities for this?
Yes — people do swim in the Liffey at Lucan, typically in calmer pools and backwaters around the weir and upstream stretches used by wild swimmers, or by joining organised group swims or using nearby supervised pools, but always check current water quality and local safety advice before entering.