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Slack River
Slack River Current Water Temperature and Forecast
On this page, you will find comprehensive information about the water temperature in Slack River, 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 Slack River
11.7°C
TODAY
11.9°C
YESTERDAY
12.6°C
A WEEK AGO
As of today, the minimum water temperature in the Slack River ranges from 50°F (10°C) to 54°F (12°C). The water is slightly warmer, but still cool for most people. Swimming in such conditions is possible, but for most people, the time spent in the water should be limited to avoid hypothermia. Even experienced swimmers may feel discomfort if they stay in the water for too long. To improve comfort and safety, a wetsuit 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.
Analysis, Historical Data, and Forecast of Water Temperature
Water Temperature Chart for Slack River Over the Last 30 Days
Today the water temperature in Slack River is higher than the same day in previous years. The water temperature range here in October is from 8°C to 14°C. The water temperature has decreased over the past 7 days but has increased over the past month.
The forecasted water temperature values for Slack are presented in the table below.
The actual water temperature values near the shore may differ by a few degrees from the stated values. For the development of the forecast, we use our own mathematical model that takes into account the current water temperature changes, historical data, and key weather trends, including wind strength and direction, and air temperature in each specific region.
Daily Water Temperature Chart
| Date | Current | Average | Forecast |
|---|---|---|---|
| Oct 21 | 12.6°C | 11.0°C | |
| Oct 22 | 12.4°C | 11.0°C | |
| Oct 23 | 12.4°C | 11.0°C | |
| Oct 24 | 12.3°C | 11.0°C | |
| Oct 25 | 12.1°C | 11.0°C | |
| Oct 26 | 12.1°C | 11.0°C | |
| Oct 27 | 11.9°C | 11.0°C | |
| Oct 28 | 11.7°C | 11.0°C | |
| Oct 29 | 11.0°C | 11.6°C | |
| Oct 30 | 11.0°C | 11.5°C | |
| Oct 31 | 11.0°C | 11.5°C | |
| Nov 1 | 8.0°C | 11.2°C | |
| Nov 2 | 8.0°C | 10.9°C | |
| Nov 3 | 8.0°C | 10.6°C | |
| Nov 4 | 8.0°C | 10.3°C | |
| Nov 5 | 8.0°C | 10.1°C |
Water Temperature Ranges in Slack River by Month
January
| Minimum | Average | Maximum |
|---|---|---|
| 4°C | 6°C | 8°C |
February
| Minimum | Average | Maximum |
|---|---|---|
| 3°C | 6°C | 9°C |
March
| Minimum | Average | Maximum |
|---|---|---|
| 4°C | 7°C | 10°C |
April
| Minimum | Average | Maximum |
|---|---|---|
| 7°C | 10.4°C | 13°C |
May
| Minimum | Average | Maximum |
|---|---|---|
| 10°C | 12.6°C | 16°C |
June
| Minimum | Average | Maximum |
|---|---|---|
| 12°C | 15°C | 19°C |
July
| Minimum | Average | Maximum |
|---|---|---|
| 14°C | 16.6°C | 22°C |
August
| Minimum | Average | Maximum |
|---|---|---|
| 16°C | 19°C | 22°C |
September
| Minimum | Average | Maximum |
|---|---|---|
| 12°C | 14.7°C | 20°C |
October
| Minimum | Average | Maximum |
|---|---|---|
| 8°C | 11°C | 14°C |
November
| Minimum | Average | Maximum |
|---|---|---|
| 5°C | 8°C | 11°C |
December
| Minimum | Average | Maximum |
|---|---|---|
| 4°C | 6°C | 8°C |
Monthly Water Temperature Histogram for Slack River
Known Beaches in the Area of Slack River?
Plage Dunes De La Slack
Plage Dunes De La Slack is a 2-stars sandy beach, located in a 2 km (1 miles) radius of Slack. There is parking.
Plage D'Audresselles
Plage D'Audresselles is a 3-stars sandy beach, located in a 3 km (2 miles) radius of Slack. There is parking. There are cafés. Plage D'Audresselles 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.
Plage De Wimereux
Plage De Wimereux is a 5-stars sandy beach, located in a 4 km (2 miles) radius of Slack. There are lifeguards on the beach. There is parking. Plage De Wimereux is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. Snorkeling is possible. It is suitable for surfing. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Slack River Weather
OCTOBER 29
12°C / 14°C
slight rain showersrain: 45% | wind: 21 km/h
OCTOBER 30
12°C / 16°C
slight rain showersrain: 31% | wind: 26 km/h
OCTOBER 31
15°C / 16°C
slight rainrain: 48% | wind: 29 km/h
NOVEMBER 1
14°C / 16°C
moderate rain showersrain: 53% | wind: 37 km/h
Water Temperature in Slack River: General Trends and Swimming Opportunities
Source:
• location Pas-de-Calais
Mouth:
• location English Channel
• coordinates 50°48′18″N 1°36′5″E
Length 22 km (14 mi)
The Slack is a 22-kilometre-long (14 mi) coastal river in the Pas-de-Calais department, in northern France.
Geographical Location of Slack River
Frequently Asked Questions About Slack River and its Water Temperatures
What is the current water temperature in Slack River?
The water temperature today in Slack River is 53°F (11.7°C).
What is the water temperature in Slack River during the summer months?
The average water temperature in Slack River during the summer months is typically between 59°F to 66°F (15°C to 19°C), and it can reach up to 72°F (22°C) at its warmest. However, in some years, the temperature may exceed this range.
What is the water temperature in Slack River in May?
The average water temperature in Slack River in May ranges from 50°F to 61°F (10°C to 16°C).
What is the water temperature in Slack River in September?
The average water temperature in Slack River in September is typically between 54°F to 68°F (12°C to 20°C).
Where does Slack River flow?
Slack River flows through France (Hauts-de-France).

