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Cardiff
Water Temperature in the Celtic Sea in Cardiff, Wales: Current, Historical Data and Forecast
On this page, you will find comprehensive information about the sea temperature in Cardiff in Wales, 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 Cardiff
8.4°C
TODAY
8.2°C
YESTERDAY
7.8°C
A WEEK AGO
Analysis, Historical Data, and Forecast of Water Temperature
Today sea water temperature in the Celtic Sea in Cardiff is 8.4°C. 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 Celtic Sea in Cardiff Over the Last 30 Days
The water temperature in Cardiff 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 Cardiff will remain nearly unchanged in the coming days, its value will be 8.7°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 Cardiff 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 |
|---|---|---|---|
| Mar 24 | 7.8°C | 8.3°C | |
| Mar 25 | 7.8°C | 8.0°C | |
| Mar 26 | 8.1°C | 8.5°C | |
| Mar 27 | 7.7°C | 8.5°C | |
| Mar 28 | 8.1°C | 8.5°C | |
| Mar 29 | 7.9°C | 7.8°C | |
| Mar 30 | 8.2°C | 8.5°C | |
| Mar 31 | 7.8°C | 8.5°C | |
| Apr 1 | 8.8°C | 8.4°C | |
| Apr 2 | 8.5°C | 8.4°C | |
| Apr 3 | 8.8°C | 8.4°C | |
| Apr 4 | 8.5°C | 8.4°C | |
| Apr 5 | 9.3°C | 8.5°C | |
| Apr 6 | 8.8°C | 8.5°C | |
| Apr 7 | 9.0°C | 8.6°C | |
| Apr 8 | 9.5°C | 8.7°C |
Sea Temperature in Cardiff Throughout the Year
Throughout the year, the sea temperature in Cardiff exceeds 77°F (25°C) for 0 days, exceeds 72°F (22°C) for 0 days, and exceeds 64°F (18°C) for 3 days.
Below is the annual chart of sea temperature changes in the Celtic Sea in Cardiff.
January
| Minimum | Average | Maximum |
|---|---|---|
| 6°C | 8.5°C | 11°C |
February
| Minimum | Average | Maximum |
|---|---|---|
| 6°C | 8°C | 10°C |
March
| Minimum | Average | Maximum |
|---|---|---|
| 6°C | 8°C | 10°C |
April
| Minimum | Average | Maximum |
|---|---|---|
| 7°C | 9.5°C | 12°C |
May
| Minimum | Average | Maximum |
|---|---|---|
| 9°C | 12°C | 15°C |
June
| Minimum | Average | Maximum |
|---|---|---|
| 12°C | 15°C | 18°C |
July
| Minimum | Average | Maximum |
|---|---|---|
| 14°C | 17°C | 20°C |
August
| Minimum | Average | Maximum |
|---|---|---|
| 16°C | 18.5°C | 21°C |
September
| Minimum | Average | Maximum |
|---|---|---|
| 15°C | 17.5°C | 20°C |
October
| Minimum | Average | Maximum |
|---|---|---|
| 13°C | 15.5°C | 18°C |
November
| Minimum | Average | Maximum |
|---|---|---|
| 10°C | 12.5°C | 15°C |
December
| Minimum | Average | Maximum |
|---|---|---|
| 7°C | 10°C | 13°C |
Monthly Water Temperature Histogram for Celtic Sea in Cardiff
You can explore detailed data on how the water temperature in Cardiff varies each month:
What Beaches Are There In and Around Cardiff?
Cardiff Bay
Cardiff Bay is a 2-stars pebble beach, located in a 3 km (2 miles) radius of Cardiff. There is parking. There are restrooms.
Splott Beach
Splott Beach is a 1-stars pebble beach, located in a 3 km (2 miles) radius of Cardiff. There is parking.
Penarth Beach
Penarth Beach is a 4-stars sandy beach, located in a 5 km (3 miles) radius of Cardiff. There is parking. There are restrooms. There are cafés. Penarth Beach is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Beach Ranny Bay
Beach Ranny Bay is a 2-stars sandy beach, located in a 7 km (4 miles) radius of Cardiff. There is parking.
Sully Bay
Sully Bay is a 2-stars sandy beach, located in a 9 km (6 miles) radius of Cardiff. There is parking.
Sully Island
Sully Island is a 1-stars sandy beach, located in a 9 km (6 miles) radius of Cardiff.
Beach Swanbridge Bay
Beach Swanbridge Bay is a 2-stars sandy beach, located in a 9 km (6 miles) radius of Cardiff. There is parking. There are cafés.
St Marys Well Bay Beach
St Marys Well Bay Beach is a 3-stars sandy beach, located in a 9 km (6 miles) radius of Cardiff. There is parking. There are restrooms. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Cardiff Weather
APRIL 1
6°C / 13°C
clear skyhumidity: 74% | wind: 8 km/h
APRIL 2
6°C / 15°C
overcast clouds: 85-100%humidity: 79% | wind: 8 km/h
APRIL 3
7°C / 15°C
overcast clouds: 85-100%humidity: 79% | wind: 7 km/h
APRIL 4
4°C / 11°C
clear skyhumidity: 72% | wind: 9 km/h
Sea Temperature in the Celtic Sea in Cardiff: General Trends and Swimming Opportunities
The climate in the coastal regions of Wales, United Kingdom, is generally mild and rainy with moderate temperatures. Due to being surrounded by the sea, these areas usually have cooler summers, warmer winters, and a greater level of humidity compared to the inland regions.
Cardiff is located in Europe in the Northern Hemisphere at a latitude of 51 degrees, along the shores of the Celtic Sea. Cardiff lies within the Wales in United Kingdom.
The average annual daytime air temperature in Cardiff is 13°C (55°F), with the average nighttime temperature being 7°C (45°F). The highest average daily temperature occurs in July, reaching 20°C (67°F), while the lowest is in February at 8°C (47°F). As for nighttime temperatures, the minimum average temperature of 2°C (36°F) is recorded in February, and the maximum is in July, reaching 13°C (55°F).
According to historical data, Cardiff experiences 165 rainy days per year, which accounts for 45 percent of all days in the year. On average, there are 14 rainy days each month. The wettest month is November, with 17 rainy days and 118 mm (4.6 inches) of precipitation, while the driest month is July, which typically has 11 rainy days and only 73 mm (2.9 inches) of precipitation.
The average annual water temperature in Celtic Sea in Cardiff is 13°C (55°F). In January, the water reaches its lowest point of the year at 6°C (43°F), while in August, it peaks at 21°C (70°F). In Cardiff, the water temperature in the Celtic Sea never consistently reaches a comfortable level for swimming in any month.
Geographical Location of Cardiff
Nearby Cities
Frequently Asked Questions About Cardiff and its Water Temperatures
What is the current sea temperature in Cardiff?
The water temperature today in the Celtic Sea in Cardiff is 47°F (8.4°C).
In which months is the water temperature in Cardiff comfortable for swimming?
It cannot be guaranteed that the water temperature in Cardiff will be comfortable for swimming in any month of the year.
What is the water temperature in Cardiff during the winter?
The water temperature in the Celtic Sea in Cardiff during the winter ranges from 6°C to 13°C (43°F to 55°F).
What is the water temperature in Cardiff during the spring?
The water temperature in the Celtic Sea in Cardiff during the spring ranges from 6°C to 15°C (43°F to 59°F).
What is the water temperature in Cardiff during the summer?
The water temperature in the Celtic Sea in Cardiff during the summer ranges from 12°C to 21°C (54°F to 70°F).
What is the water temperature in Cardiff during the fall?
The water temperature in the Celtic Sea in Cardiff during the fall ranges from 10°C to 20°C (50°F to 68°F).
Is it possible to swim in the sea in Cardiff at any time of the year?
The Celtic Sea in Cardiff is quite cool, and swimming is only possible in , and August when the water temperature reaches 21°C (70°F).
What sea temperatures can I expect in Cardiff in the next month?
In May, the water temperature in the Celtic Sea in Cardiff will range between 48°F (9°C) and 59°F (15°C)