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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

10.1°C
Today
10.1°C
Yesterday
10.6°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 10.1°C.

Water Temperature: Daily Trends, Historical Records, and Forecast

❌ As of today, the minimum water temperature ranges from 50°F (10°C) to 54°F (12°C). The water is slightly warmer, but still cool for most people. Swimming in such conditions is possible, but for most people, the time spent in the water should be limited to avoid hypothermia. Even experienced swimmers may feel discomfort if they stay in the water for too long. To improve comfort and safety, a wetsuit can be used. 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 October 4 to November 4

Table of Daily Sea Temperature Data

Date Current Average Forecast
OCT 2810.6°C12.0°C
OCT 2910.7°C12.0°C
OCT 3010.8°C12.0°C
OCT 3110.5°C12.0°C
NOV 111.0°C7.5°C
NOV 211.0°C7.5°C
NOV 310.1°C7.5°C
NOV 410.1°C7.5°C
NOV 57.5°C10.0°C
NOV 67.5°C9.8°C
NOV 77.5°C9.7°C
NOV 87.5°C9.6°C
NOV 97.5°C9.5°C
NOV 107.5°C9.3°C
NOV 117.5°C9.2°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
June12°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

November 5

° / °
light drizzle
rain: 12% | wind:

November 6

° / °
light drizzle
rain: 12% | wind:

November 7

° / °
moderate drizzle
rain: 25% | wind:

November 8

° / °
light drizzle
rain: 6% | wind:

November 9

° / °
light drizzle
rain: 31% | 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 10.1°C.
What is the water temperature in Lucan during the summer months?
The water temperature in Lucan in summer fluctuates in the range of 12°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.