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Lough Gill — Current Water Temperature, Annual Trends and Forecast

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

Lough Gill, Republic of Ireland
Lough Gill, Republic of Ireland © By Oliver Dixon, CC BY-SA 2.0

Current Water Temperature

12.8°C
Today
11.7°C
Yesterday
13.7°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 Lough Gill today is 12.8°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 September 13 to October 14

Table of Daily Sea Temperature Data

Date Current Average Forecast
OCT 713.7°C13.0°C
OCT 813.3°C13.0°C
OCT 912.9°C13.0°C
OCT 1012.4°C13.0°C
OCT 1112.7°C13.0°C
OCT 1211.9°C13.0°C
OCT 1311.7°C13.0°C
OCT 1412.8°C13.0°C
OCT 1513.0°C12.8°C
OCT 1613.0°C12.8°C
OCT 1713.0°C12.8°C
OCT 1813.0°C12.8°C
OCT 1913.0°C12.9°C
OCT 2013.0°C12.9°C
OCT 2113.0°C12.9°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°C9°C
March3°C7°C10°C
April6°C10°C13°C
May10°C15°C21°C
June14°C20°C26°C
July16°C22°C27°C
August17°C22°C27°C
September13°C19°C24°C
October9°C13°C17°C
November5°C9°C12°C
December5°C3°C10°C

Lough Gill: Water Temperature by Location

Lough Gill: Weather Forecast

October 15

° / °
moderate rain
rain: 100% | wind:

October 16

° / °
light drizzle
rain: 53% | wind:

October 17

° / °
overcast
rain: 0% | wind:

October 18

° / °
overcast
rain: 13% | wind:

October 19

° / °
overcast
rain: 16% | wind:

Location & Local Information

Lough Gill, located east of Sligo town in Ireland’s northwest, is a scenic freshwater lake surrounded by forested hills and small islands, including the famous Isle of Innisfree. The lake’s water remains cool year-round due to its depth and sheltered setting. Average winter temperatures hover around 5–7°C (41–45°F), while in summer they typically rise to 14–17°C (57–63°F). On calm, sunny days, shallow bays may briefly reach 18°C (64°F), though the deeper areas stay colder. The lake’s clear but brisk water reflects the influence of Ireland’s maritime climate, making midsummer the most comfortable time for swimming, particularly in late June through August.

Swimming is allowed in Lough Gill, and it is enjoyed by both locals and visitors who appreciate the lake’s quiet surroundings. Swimmers usually choose access points near Parke’s Castle or Hazelwood, where the shoreline is safe and easy to reach. The lake is also popular for kayaking and fishing, and its unspoiled character attracts those seeking calm nature experiences. Nearby attractions include the town of Sligo with its cultural and literary heritage, and the scenic Glencar Waterfall just to the northeast. Lough Gill’s blend of natural beauty, refreshing water, and peaceful atmosphere makes it one of the most charming lakes in Ireland.

Nearby Lakes

Frequently Asked Questions

What is the current water temperature in Lough Gill?
Water Temperature in Lough Gill today is 12.8°C.
What is the water temperature in Lough Gill during the summer months?
The water temperature in Lough Gill in summer fluctuates in the range of 14°C - 27°C.
Is it possible to swim in Lough Gill (Republic of Ireland) and what are the possibilities for this?
Yes — you can swim in Lough Gill, either as wild swimming from shore or sheltered bays, by joining informal or guided group swims or by swimming from a small boat, but there are no lifeguarded beaches, water quality, depth and underwater hazards can vary and boat traffic may be present, so check local conditions and use appropriate safety measures.