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Londonderry
Water Temperature in the Irish Sea in Londonderry, Northen Ireland: Current, Historical Data and Forecast
On this page, you will find comprehensive information about the sea temperature in Londonderry in Northen Ireland, including current readings, historical data and trends, monthly averages, as well as weather forecasts and upcoming temperature predictions. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.
Current Water Temperature in Londonderry
50°F
TODAY
50°F
YESTERDAY
48°F
A WEEK AGO
Analysis, Historical Data, and Forecast of Water Temperature
Today sea water temperature in the Irish Sea in Londonderry is 10.1°F. This is still cool water, suitable only for experienced swimmers or those accustomed to cold water. Swimming in such conditions is possible, but not recommended for prolonged periods. Extra caution should be taken during extended exposure, as the cold water can cause heat loss and lead to hypothermia. For added comfort, special clothing 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 for Irish Sea in Londonderry Over the Last 30 Days
The water temperature in Londonderry today is lower than both a week ago and a month ago. Today's sea temperature is generally in line with historical values for this day.
According to our forecast, the sea temperature in Londonderry will remain nearly unchanged in the coming days, its value will be 48°F.
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 across United Kingdom to enhance accuracy.
Water temperature data for Londonderry and nearby towns and resorts 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.
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| Apr 8 | 48°F | 47°F | |
| Apr 9 | 48°F | 48°F | |
| Apr 10 | 47°F | 48°F | |
| Apr 11 | 49°F | 46°F | |
| Apr 12 | 49°F | 47°F | |
| Apr 13 | 49°F | 47°F | |
| Apr 14 | 50°F | 48°F | |
| Apr 15 | 50°F | 48°F | |
| Apr 16 | 48°F | 49°F | |
| Apr 17 | 48°F | 49°F | |
| Apr 18 | 47°F | 49°F | |
| Apr 19 | 46°F | 48°F | |
| Apr 20 | 48°F | 48°F | |
| Apr 21 | 47°F | 48°F | |
| Apr 22 | 47°F | 48°F | |
| Apr 23 | 48°F | 48°F |
Sea Temperature in Londonderry Throughout the Year
Throughout the year, the sea temperature in Londonderry never exceeds 64°F (18°C).
Below is the annual chart of sea temperature changes in the Irish Sea in Londonderry.
January
| Minimum | Average | Maximum |
|---|---|---|
| 45°F | 48°F | 52°F |
February
| Minimum | Average | Maximum |
|---|---|---|
| 45°F | 47°F | 50°F |
March
| Minimum | Average | Maximum |
|---|---|---|
| 43°F | 46°F | 50°F |
April
| Minimum | Average | Maximum |
|---|---|---|
| 45°F | 48°F | 52°F |
May
| Minimum | Average | Maximum |
|---|---|---|
| 48°F | 51°F | 54°F |
June
| Minimum | Average | Maximum |
|---|---|---|
| 48°F | 54°F | 59°F |
July
| Minimum | Average | Maximum |
|---|---|---|
| 52°F | 57°F | 63°F |
August
| Minimum | Average | Maximum |
|---|---|---|
| 55°F | 59°F | 63°F |
September
| Minimum | Average | Maximum |
|---|---|---|
| 55°F | 59°F | 63°F |
October
| Minimum | Average | Maximum |
|---|---|---|
| 52°F | 55°F | 59°F |
November
| Minimum | Average | Maximum |
|---|---|---|
| 50°F | 54°F | 57°F |
December
| Minimum | Average | Maximum |
|---|---|---|
| 48°F | 51°F | 54°F |
Monthly Water Temperature Histogram for Irish Sea in Londonderry
You can explore detailed data on how the water temperature in Londonderry varies each month:
What Beaches Are There In and Around Londonderry?
Lisfannon Strand
Lisfannon Strand is a 5-stars sandy beach, located in a 6 km (4 miles) radius of Londonderry. There are lifeguards on the beach. There is parking. There are restrooms. Lisfannon Strand is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. Snorkeling is possible. It is suitable for surfing. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Buncrana
Buncrana is a 5-stars sandy beach, located in a 9 km (6 miles) radius of Londonderry. There are lifeguards on the beach. There is parking. There are restrooms. There are cafés. Buncrana is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. It is suitable for surfing. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Londonderry Weather
APRIL 16
37°F / 52°F
light rainhumidity: 77% | wind: 2 mph
APRIL 17
45°F / 48°F
light rainhumidity: 91% | wind: 4 mph
APRIL 18
48°F / 54°F
light rainhumidity: 88% | wind: 4 mph
APRIL 19
46°F / 52°F
light rainhumidity: 71% | wind: 3 mph
Sea Temperature in the Irish Sea in Londonderry: General Trends and Swimming Opportunities
The coastal area of Northern Ireland, United Kingdom, features a temperate maritime climate characterized by relatively mild and damp conditions throughout the year. Winters are generally cool with temperatures averaging around 5°C, while summers are mild, with temperatures usually around 15-20°C, and rainfall is evenly distributed throughout the year.
Londonderry is located in Europe in the Northern Hemisphere at a latitude of 55 degrees, along the shores of the Irish Sea. Londonderry lies within the Northen Ireland in United Kingdom.
The average annual daytime air temperature in Londonderry is 13°C (55°F), with the average nighttime temperature being 7°C (45°F). The highest average daily temperature occurs in July, reaching 18°C (65°F), while the lowest is in January at 8°C (46°F). As for nighttime temperatures, the minimum average temperature of 3°C (37°F) is recorded in February, and the maximum is in August, reaching 12°C (53°F).
According to historical data, Londonderry experiences 189 rainy days per year, which accounts for 52 percent of all days in the year. On average, there are 16 rainy days each month. The wettest month is January, with 18 rainy days and 122 mm (4.8 inches) of precipitation, while the driest month is April, which typically has 13 rainy days and only 70 mm (2.7 inches) of precipitation.
The average annual water temperature in Irish Sea in Londonderry is 11°C (52°F). In March, the water reaches its lowest point of the year at 6°C (43°F), while in July, it peaks at 17°C (63°F). In Londonderry, the water temperature in the Irish Sea never consistently reaches a comfortable level for swimming in any month.
Geographical Location of Londonderry
Nearby Cities
Frequently Asked Questions About Londonderry and its Water Temperatures
What is the current sea temperature in Londonderry?
The water temperature today in the Irish Sea in Londonderry is 50°F (9.8°C).
In which months is the water temperature in Londonderry comfortable for swimming?
It cannot be guaranteed that the water temperature in Londonderry will be comfortable for swimming in any month of the year.
What is the water temperature in Londonderry during the winter?
The water temperature in the Irish Sea in Londonderry during the winter ranges from 7°C to 12°C (45°F to 54°F).
What is the water temperature in Londonderry during the spring?
The water temperature in the Irish Sea in Londonderry during the spring ranges from 6°C to 12°C (43°F to 54°F).
What is the water temperature in Londonderry during the summer?
The water temperature in the Irish Sea in Londonderry during the summer ranges from 9°C to 17°C (48°F to 63°F).
What is the water temperature in Londonderry during the fall?
The water temperature in the Irish Sea in Londonderry during the fall ranges from 10°C to 17°C (50°F to 63°F).
Is it possible to swim in the sea in Londonderry at any time of the year?
In Londonderry, the Irish Sea is quite cold, and swimming is almost impossible as the water temperature never reaches 21°C (70°F).
What sea temperatures can I expect in Londonderry in the next month?
In May, the water temperature in the Irish Sea in Londonderry will range between 48°F (9°C) and 54°F (12°C)