Ätran River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Ätran River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Ätran River today is 19.7°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 |
|---|---|---|---|
| JUL 14 | 18.6°C | 18.0°C | |
| JUL 15 | 20.4°C | 18.0°C | |
| JUL 16 | 20.4°C | 18.0°C | |
| JUL 17 | 20.5°C | 18.0°C | |
| JUL 18 | 20.5°C | 18.0°C | |
| JUL 19 | 19.9°C | 18.0°C | |
| JUL 20 | 19.8°C | 18.0°C | |
| JUL 21 | 19.8°C | 18.0°C | |
| JUL 22 | 18.0°C | 19.6°C | |
| JUL 23 | 18.0°C | 19.5°C | |
| JUL 24 | 18.0°C | 19.4°C | |
| JUL 25 | 18.0°C | 19.4°C | |
| JUL 26 | 18.0°C | 19.3°C | |
| JUL 27 | 18.0°C | 19.2°C | |
| JUL 28 | 18.0°C | 19.1°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 | 2°C | 5°C |
| February | 0°C | 2°C | 5°C |
| March | 1°C | 5°C | 8°C |
| April | 4°C | 8°C | 10°C |
| May | 7°C | 11°C | 16°C |
| June | 14°C | 19°C | 24°C |
| July | 14°C | 18°C | 23°C |
| August | 12°C | 17°C | 21°C |
| September | 9°C | 14°C | 18°C |
| October | 6°C | 9°C | 12°C |
| November | 3°C | 7°C | 9°C |
| December | 0°C | 4°C | 7°C |
Ätran River: Water Temperature by Location
Ätran River: Weather Forecast
July 22
July 23
July 24
July 25
Location & Local Information
Source:
• location Gullered, Västergötland
• coordinates 57°46′21″N 13°33′28″E
• elevation 332 m (1,089 ft)
Mouth Kattegat
• location Falkenberg
• coordinates 56°53′18″N 12°28′39″E
• elevation 0 m (0 ft)
Length 240 km (150 mi)
The river Ätran (Swedish: Ätran) in Västra Götaland County shows pronounced seasonal variation in water temperature because of its flow, depth and regional climate. Typical spring temperatures range from about 0–8 °C (32–46 °F) as snowmelt and runoff cool the water. By early summer the river often warms to roughly 8–15 °C (46–59 °F), and in the warmest parts and shallow stretches during July and August surface temperatures can reach approximately 15–22 °C (59–72 °F). In autumn temperatures usually fall back to around 8–14 °C (46–57 °F), while winter conditions bring water close to freezing, commonly 0–4 °C (32–39 °F) and sometimes ice cover in protected reaches. Local conditions, shading, and flow rate produce variation, so measurements at one spot may not represent the whole river.
Swimming in Ätran is generally permitted where public access exists and there are no specific prohibitions. Many people swim recreationally in calmer, shallow sections during summer, but caution is advised because currents, cold pockets, uneven bottoms and submerged obstacles can pose risks. Water quality in much of the Ätran system is often good, supporting fish like trout and salmon, yet swimmers should respect private property, heed local signs and consider seasonal hazards such as strong spring flows, low visibility and the absence of lifeguards.