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Rostrevor

Water Temperature in the Irish Sea in Rostrevor, Northen Ireland: Current, Historical Data and Forecast

On this page, you will find comprehensive information about the sea temperature in Rostrevor 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 Rostrevor

12.5°C

TODAY

11.8°C

YESTERDAY

11.3°C

A WEEK AGO

All water temperature data is now available in our official mobile apps — for iOS and Android.

Analysis, Historical Data, and Forecast of Water Temperature

Today sea water temperature in the Irish Sea in Rostrevor is 12.5°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 for Irish Sea in Rostrevor Over the Last 30 Days

The water temperature in Rostrevor 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 Rostrevor will remain nearly unchanged in the coming days, its value will be 11.4°C.

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 Rostrevor 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

DateCurrentAverageForecast
May 1411.3°C10.3°C
May 1511.7°C10.5°C
May 1611.6°C10.5°C
May 1711.6°C10.5°C
May 1812.3°C10.8°C
May 1911.4°C11.3°C
May 2011.8°C10.8°C
May 2112.5°C11.3°C
May 2211.3°C12.3°C
May 2311.3°C12.1°C
May 2411.0°C11.9°C
May 2511.3°C11.8°C
May 2610.8°C11.6°C
May 2711.3°C11.6°C
May 2811.0°C11.5°C
May 2910.8°C11.4°C
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast

Sea Temperature in Rostrevor Throughout the Year

Throughout the year, the sea temperature in Rostrevor never exceeds 64°F (18°C).

Below is the annual chart of sea temperature changes in the Irish Sea in Rostrevor.

January

MinimumAverageMaximum
7°C9°C11°C

February

MinimumAverageMaximum
7°C8.5°C10°C

March

MinimumAverageMaximum
6°C8°C10°C

April

MinimumAverageMaximum
7°C9°C11°C

May

MinimumAverageMaximum
8°C10.5°C13°C

June

MinimumAverageMaximum
9°C12.5°C16°C

July

MinimumAverageMaximum
11°C14.5°C18°C

August

MinimumAverageMaximum
12°C15°C18°C

September

MinimumAverageMaximum
13°C15°C17°C

October

MinimumAverageMaximum
11°C13°C15°C

November

MinimumAverageMaximum
10°C12°C14°C

December

MinimumAverageMaximum
9°C10.5°C12°C

Monthly Water Temperature Histogram for Irish Sea in Rostrevor

You can explore detailed data on how the water temperature in Rostrevor varies each month:

What Beaches Are There In and Around Rostrevor?

Warrenpoint Beach

Warrenpoint Beach is a 3-stars sandy beach, located in a 3 km (2 miles) radius of Rostrevor. There is parking. There are restrooms. There are cafés. It is suitable for surfing.

Oyster Bay Beach

Oyster Bay Beach is a 1-stars sandy beach, located in a 7 km (4 miles) radius of Rostrevor.

Rostrevor Weather

MAY 22

6°C / 16°C
broken clouds: 51-84%

humidity: 78% | wind: 2 km/h

MAY 23

13°C / 16°C
overcast clouds: 85-100%

humidity: 93% | wind: 5 km/h

MAY 24

9°C / 13°C
light rain

humidity: 78% | wind: 8 km/h

MAY 25

10°C / 10°C
overcast clouds: 85-100%

humidity: 71% | wind: 7 km/h

Northen Ireland, United KingdomNorthen Ireland, United KingdomNorthen Ireland, United Kingdom

Sea Temperature in the Irish Sea in Rostrevor: General Trends and Swimming Opportunities

Original name
Rostrevor
The Local Time
12:18
Time Zone
UTC+1
Sunrise
05:14
Sunset
21:29
Length of the day
16 h 14 m

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.

Rostrevor is located in Europe in the Northern Hemisphere at a latitude of 54 degrees, along the shores of the Irish Sea. Rostrevor lies within the Northen Ireland in United Kingdom.

The average annual daytime air temperature in Rostrevor is 14°C (57°F), with the average nighttime temperature being 7°C (45°F). The highest average daily temperature occurs in July, reaching 19°C (67°F), while the lowest is in January at 9°C (48°F). As for nighttime temperatures, the minimum average temperature of 3°C (37°F) is recorded in January, and the maximum is in July, reaching 12°C (53°F).

According to historical data, Rostrevor experiences 175 rainy days per year, which accounts for 48 percent of all days in the year. On average, there are 15 rainy days each month. The wettest month is January, with 17 rainy days and 63 mm (2.5 inches) of precipitation, while the driest month is June, which typically has 12 rainy days and only 61 mm (2.4 inches) of precipitation.

The average annual water temperature in Irish Sea in Rostrevor 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 18°C (64°F). In Rostrevor, the water temperature in the Irish Sea never consistently reaches a comfortable level for swimming in any month.

Geographical Location of Rostrevor

Frequently Asked Questions About Rostrevor and its Water Temperatures

What is the current sea temperature in Rostrevor?

The water temperature today in the Irish Sea in Rostrevor is 55°F (12.5°C).

In which months is the water temperature in Rostrevor comfortable for swimming?

It cannot be guaranteed that the water temperature in Rostrevor will be comfortable for swimming in any month of the year.

What is the water temperature in Rostrevor during the winter?

The water temperature in the Irish Sea in Rostrevor during the winter ranges from 7°C to 12°C (45°F to 54°F).

What is the water temperature in Rostrevor during the spring?

The water temperature in the Irish Sea in Rostrevor during the spring ranges from 6°C to 13°C (43°F to 55°F).

What is the water temperature in Rostrevor during the summer?

The water temperature in the Irish Sea in Rostrevor during the summer ranges from 9°C to 18°C (48°F to 64°F).

What is the water temperature in Rostrevor during the fall?

The water temperature in the Irish Sea in Rostrevor during the fall ranges from 10°C to 17°C (50°F to 63°F).

Is it possible to swim in the sea in Rostrevor at any time of the year?

In Rostrevor, 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 Rostrevor in the next month?

In June, the water temperature in the Irish Sea in Rostrevor will range between 48°F (9°C) and 61°F (16°C)