Leiden — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Leiden, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Leiden today is 19.8°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 | 18.1°C | 17.1°C | |
| JUN 24 | 18.0°C | 17.1°C | |
| JUN 25 | 18.0°C | 17.1°C | |
| JUN 26 | 18.5°C | 17.1°C | |
| JUN 27 | 18.8°C | 17.1°C | |
| JUN 28 | 18.8°C | 17.1°C | |
| JUN 29 | 18.8°C | 17.1°C | |
| JUN 30 | 18.8°C | 17.1°C | |
| JUL 1 | 19.7°C | 19.8°C | |
| JUL 2 | 19.7°C | 19.8°C | |
| JUL 3 | 19.7°C | 19.8°C | |
| JUL 4 | 19.7°C | 19.8°C | |
| JUL 5 | 19.7°C | 19.8°C | |
| JUL 6 | 19.7°C | 19.8°C | |
| JUL 7 | 19.7°C | 19.8°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 | 5°C | 7°C |
| February | 3°C | 4°C | 5°C |
| March | 3°C | 6°C | 9°C |
| April | 7°C | 10°C | 13°C |
| May | 12°C | 15°C | 18°C |
| June | 14°C | 17°C | 21°C |
| July | 17°C | 20°C | 25°C |
| August | 16°C | 20°C | 22°C |
| September | 14°C | 19°C | 23°C |
| October | 11°C | 14°C | 17°C |
| November | 5°C | 9°C | 12°C |
| December | 3°C | 5°C | 7°C |
Leiden: Weather Forecast
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July 5
Location & Local Information
Leiden, a historic city in the Netherlands, is situated along the Oude Rijn River, which flows through the city before reaching the North Sea. The river's water temperature in Leiden is influenced by seasonal changes and the tidal nature of the river. During the summer months, the water temperature can range from 18°C to 22°C (64°F to 72°F), making it more comfortable for swimming, though some may still find it a bit cool. In contrast, during the colder months, the temperature can drop significantly, reaching around 4°C to 6°C (39°F to 43°F), which makes swimming in the river unsafe and uncomfortable.
While Leiden is known for its canals, which are often used for boat tours and other activities, the Oude Rijn River itself isn't a primary swimming destination. The river does have areas where people may swim during the summer, particularly in calmer sections with less boat traffic. However, swimmers should always check local water quality reports and be aware of safety conditions, as the river can have strong currents and be affected by tides, especially closer to the North Sea.