Saint-Nazaire — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Saint-Nazaire, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Saint-Nazaire today is 19.1°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 65°F (18°C) to 68°F (20°C). This is already quite warm water, which is ideal for most people. Swimming becomes comfortable, and prolonged stays in the water do not cause discomfort. This temperature is perfect for family trips and for those who prefer warmer water. It is also comfortable for water sports such as surfing or swimming. 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
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| AUG 25 | 19.9°C | 20.0°C | |
| AUG 26 | 19.3°C | 20.0°C | |
| AUG 27 | 19.3°C | 20.0°C | |
| AUG 28 | 19.3°C | 20.0°C | |
| AUG 29 | 19.2°C | 20.0°C | |
| AUG 30 | 19.3°C | 20.0°C | |
| AUG 31 | 19.4°C | 20.0°C | |
| SEP 1 | 19.1°C | 17.0°C | |
| SEP 2 | 17.0°C | 19.0°C | |
| SEP 3 | 17.0°C | 18.9°C | |
| SEP 4 | 17.0°C | 18.8°C | |
| SEP 5 | 17.0°C | 18.7°C | |
| SEP 6 | 17.0°C | 18.6°C | |
| SEP 7 | 17.0°C | 18.5°C | |
| SEP 8 | 17.0°C | 18.4°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 |
|---|---|---|---|
| January | 2°C | 6°C | 9°C |
| February | 2°C | 6°C | 9°C |
| March | 5°C | 9°C | 11°C |
| April | 9°C | 12°C | 15°C |
| May | 10°C | 15°C | 19°C |
| June | 15°C | 19°C | 24°C |
| July | 16°C | 20°C | 25°C |
| August | 16°C | 20°C | 25°C |
| September | 12°C | 17°C | 21°C |
| October | 9°C | 13°C | 16°C |
| November | 5°C | 9°C | 13°C |
| December | 2°C | 6°C | 11°C |
Saint-Nazaire: Weather Forecast
September 2
September 3
September 4
September 5
September 6
Location & Local Information
Saint-Nazaire is a coastal city located at the mouth of the Loire River, where the river meets the Atlantic Ocean in western France. The city is known for its shipyards, maritime heritage, and the surrounding natural beauty. The water temperature of the Loire River in this area is influenced by the tidal conditions and the proximity to the Atlantic, leading to relatively cool waters year-round. During the summer months, the water temperature in the Loire River near Saint-Nazaire typically ranges from 16°C to 20°C (61°F to 68°F), which can be refreshing for swimming but may still feel chilly for those not accustomed to cooler waters. In contrast, during the winter months, the temperature can drop to around 8°C to 10°C (46°F to 50°F), making swimming less pleasant and potentially unsafe due to the cold.
The Loire River in Saint-Nazaire is not generally regarded as a prime location for swimming due to strong tidal currents, shipping traffic, and the potential for poor water quality in some areas. However, the city has a rich selection of beaches along the Atlantic coast, such as those in nearby La Baule, which are better suited for recreational swimming. These beaches offer warmer water temperatures in the summer, as well as lifeguard supervision, making them much more ideal for a safe and enjoyable swim. For those looking to swim in the Loire River itself, caution should be exercised, and it is advised to swim only in designated areas or under proper supervision.