Spaarne River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Spaarne River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Spaarne River today is 19.9°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 | 18.0°C | 19.5°C | |
| JUN 24 | 18.5°C | 19.5°C | |
| JUN 25 | 18.5°C | 19.5°C | |
| JUN 26 | 19.3°C | 19.5°C | |
| JUN 27 | 19.8°C | 19.5°C | |
| JUN 28 | 19.8°C | 19.5°C | |
| JUN 29 | 19.8°C | 19.5°C | |
| JUN 30 | 19.8°C | 19.5°C | |
| JUL 1 | 21.6°C | 20.0°C | |
| JUL 2 | 21.6°C | 20.1°C | |
| JUL 3 | 21.6°C | 20.2°C | |
| JUL 4 | 21.6°C | 20.2°C | |
| JUL 5 | 21.6°C | 20.3°C | |
| JUL 6 | 21.6°C | 20.4°C | |
| JUL 7 | 21.6°C | 20.5°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 | 0°C | 4°C | 7°C |
| February | 1°C | 4°C | 7°C |
| March | 4°C | 7°C | 10°C |
| April | 8°C | 12°C | 15°C |
| May | 11°C | 15°C | 18°C |
| June | 15°C | 20°C | 23°C |
| July | 19°C | 22°C | 27°C |
| August | 17°C | 19°C | 22°C |
| September | 13°C | 16°C | 21°C |
| October | 10°C | 13°C | 16°C |
| November | 4°C | 8°C | 12°C |
| December | 0°C | 4°C | 7°C |
Spaarne River: Water Temperature by Location
Spaarne River: Weather Forecast
July 1
July 2
July 3
July 4
July 5
Location & Local Information
The Spaarne River flows through the city of Haarlem in the Netherlands, making it an important waterway in the region. While the river offers a scenic setting, it is not a well-known location for swimming due to the fluctuating water quality and the presence of boat traffic. The water temperature in the Spaarne River can vary significantly depending on the time of year. In the colder months, from October to March, the water temperature is usually quite low, typically ranging between 4°C and 8°C (39°F to 46°F). This makes swimming not advisable, as the water is too cold for comfort and safety.
During the warmer months, especially from June to September, the water temperature in the Spaarne can rise to between 15°C and 20°C (59°F to 68°F). These temperatures are more suitable for swimming, but due to the high traffic of boats, barges, and other watercraft, swimming directly in the river is not recommended in most areas. Additionally, the water quality can vary depending on local pollution levels and water management, so it’s important to check for designated swimming areas or local advisories before entering the water.