Derrynasliggaun — Water Temperature, Sea Conditions & Trends
This page provides clear and up-to-date information about water temperature for Derrynasliggaun (Connacht, Republic of Ireland). It includes the current water temperature, daily data for the last month presented in a simple chart, and a 7-day forecast. The page also compares today’s value with typical averages for this period, shows usual monthly ranges during the year, and lists nearby beaches with short descriptions. Local weather for the next few days and general details about Derrynasliggaun help you plan your visit and choose the best time for swimming.
Current Water Temperature
Water temperature in Derrynasliggaun in the Atlantic Ocean today is 13°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
Water temperature in Derrynasliggaun rose over the last 30 days but fell over the last week. Currently, the sea water temperature at this location matches the average for this day in previous years.
According to our forecast, Water temperature in Derrynasliggaun will be 13.3°C in the next 7 days. See the table below for daily data for the upcoming week.
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| JUN 3 | 13.5°C | 12.5°C | |
| JUN 4 | 13.5°C | 12.8°C | |
| JUN 5 | 13.4°C | 13.3°C | |
| JUN 6 | 13.5°C | 13.0°C | |
| JUN 7 | 13.5°C | 12.3°C | |
| JUN 8 | 13.2°C | 12.8°C | |
| JUN 9 | 13.3°C | 12.8°C | |
| JUN 10 | 13.3°C | 12.8°C | |
| JUN 11 | 13.2°C | 12.8°C | 13.2°C |
| JUN 12 | 12.3°C | 13.2°C | |
| JUN 13 | 13.0°C | 13.2°C | |
| JUN 14 | 13.0°C | 13.2°C | |
| JUN 15 | 13.0°C | 13.2°C | |
| JUN 16 | 13.0°C | 13.3°C | |
| JUN 17 | 13.3°C | 13.3°C | |
| JUN 18 | 13.0°C | 13.3°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.
Water temperature data for this location is gathered from various sources, including buoys and satellite sea and ocean surface maps provided by the NOAA agency. We also incorporate data from local authorities in each specific location worldwide to ensure more accurate temperature readings.
Annual Water Temperature Overview by Month
Monthly Water Temp Ranges
Annual Water Temperature Trend
Derrynasliggaun, situated in Connacht on Ireland’s Atlantic-influenced west, has water temperatures that follow the typical seasonal pattern of the Irish coast. Winter waters are cold, generally around 7–10 °C, while spring sees a gradual rise to roughly 8–12 °C. The warmest period is in midsummer, with surface temperatures commonly between 13–17 °C, though brief warm spells can push values slightly higher in sheltered spots. Temperatures usually fall again in autumn to around 10–14 °C. Local conditions such as exposure to open sea, tidal flow and shelter from headlands can produce small but noticeable variations from these averages, so actual temperatures at a particular shore or cove in Derrynasliggaun may differ from the general range.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 8°C | 10°C | 12°C |
| February | 7°C | 9°C | 11°C |
| March | 7°C | 9°C | 11°C |
| April | 8°C | 10°C | 12°C |
| May | 10°C | 12°C | 14°C |
| June | 11°C | 13°C | 16°C |
| July | 12°C | 15°C | 19°C |
| August | 14°C | 16°C | 18°C |
| September | 13°C | 15°C | 18°C |
| October | 12°C | 14°C | 16°C |
| November | 10°C | 12°C | 15°C |
| December | 9°C | 10°C | 13°C |
* Click on a month to view detailed water temperature data.
Derrynasliggaun: Weather Forecast
June 11
June 12
Location, Beaches & Local Information
Nearby Beaches & Facilities
Glassillaun Bay Beach
Glassillaun Beach
Lettergesh Beach
Uggool Beach
Swimming Conditions
Swimming opportunities in and around Derrynasliggaun reflect these temperatures and the often rugged coastal environment. Summer months offer the most comfortable open-water swimming for casual beachgoers, but even then water is cool enough that many visitors use wetsuits; outside of July and August, a wetsuit is commonly advised for longer swims. Sheltered bays and estuarine areas can be calmer and slightly warmer, making them better for families, while wild swimmers and experienced cold-water enthusiasts may swim year-round with appropriate safety measures. Facilities such as lifeguards, changing rooms or monitored water-quality information can be limited in rural Connacht locations, so swimmers should check local guidance, be mindful of tides and currents, avoid swimming alone and come prepared with warm clothing and a plan for warming up after exiting the water.