Lys River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Lys River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Lys River today is 19°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 |
|---|---|---|---|
| JUN 23 | 17.9°C | 17.0°C | |
| JUN 24 | 17.9°C | 17.0°C | |
| JUN 25 | 18.0°C | 17.0°C | |
| JUN 26 | 18.2°C | 17.0°C | |
| JUN 27 | 18.2°C | 17.0°C | |
| JUN 28 | 18.2°C | 17.0°C | |
| JUN 29 | 18.3°C | 17.0°C | |
| JUN 30 | 19.0°C | 17.0°C | |
| JUL 1 | 18.0°C | 19.0°C | |
| JUL 2 | 18.0°C | 18.9°C | |
| JUL 3 | 18.0°C | 18.9°C | |
| JUL 4 | 18.0°C | 18.8°C | |
| JUL 5 | 18.0°C | 18.8°C | |
| JUL 6 | 18.0°C | 18.7°C | |
| JUL 7 | 18.0°C | 18.7°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 | 3°C | 7°C | 9°C |
| February | 3°C | 7°C | 9°C |
| March | 4°C | 8°C | 10°C |
| April | 6°C | 9°C | 13°C |
| May | 6°C | 11°C | 17°C |
| June | 12°C | 17°C | 21°C |
| July | 13°C | 18°C | 22°C |
| August | 14°C | 18°C | 23°C |
| September | 10°C | 15°C | 19°C |
| October | 6°C | 9°C | 12°C |
| November | 4°C | 8°C | 12°C |
| December | 3°C | 7°C | 9°C |
Lys River: Water Temperature by Location
Lys River: Weather Forecast
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July 4
July 5
Location & Local Information
Source:
• location Pas-de-Calais
• elevation 115 m (377 ft)
Mouth:
• location Scheldt
• coordinates 51°3′18″N 3°44′3″E
Length 202 km (126 mi)
The Lys River, which flows through both France and Belgium, offers several opportunities for swimming, particularly during the summer months. In the warmer season, the water temperature typically ranges between 18-22°C (64-72°F), which is comfortable for swimming in sections where the current is calm and the water is clean. Popular swimming areas can be found in quieter stretches of the river, where the flow is gentler, providing a safer and more enjoyable experience for swimmers. However, in some parts of the river, the current may be stronger, so it's important to exercise caution and check local conditions before entering the water. During the cooler months, the water temperature can drop significantly, making swimming less inviting. It’s always advisable to check the water quality and local regulations before swimming in the Lys.