Mariestad — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Mariestad, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Mariestad today is 20.9°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 68°F (20°C) to 74°F (23°C). The water is warm and pleasant for swimming, and in this range, one can stay in the water for extended periods without the risk of hypothermia. This is the ideal temperature for relaxation, swimming, and water sports. Families with children, as well as outdoor enthusiasts, will enjoy swimming and time spent in the water. For most people, this is the optimal temperature for a comfortable beach experience. 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 | 19.6°C | 21.0°C | |
| JUL 15 | 21.6°C | 21.0°C | |
| JUL 16 | 21.9°C | 21.0°C | |
| JUL 17 | 21.9°C | 21.0°C | |
| JUL 18 | 21.9°C | 21.0°C | |
| JUL 19 | 21.2°C | 21.0°C | |
| JUL 20 | 21.2°C | 21.0°C | |
| JUL 21 | 20.9°C | 21.0°C | |
| JUL 22 | 21.0°C | 20.9°C | |
| JUL 23 | 21.0°C | 20.9°C | |
| JUL 24 | 21.0°C | 20.9°C | |
| JUL 25 | 21.0°C | 20.9°C | |
| JUL 26 | 21.0°C | 20.9°C | |
| JUL 27 | 21.0°C | 20.9°C | |
| JUL 28 | 21.0°C | 20.9°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 | 3°C | 6°C |
| February | 0°C | 3°C | 6°C |
| March | 0°C | 4°C | 7°C |
| April | 4°C | 8°C | 11°C |
| May | 8°C | 13°C | 19°C |
| June | 13°C | 19°C | 24°C |
| July | 16°C | 21°C | 26°C |
| August | 14°C | 20°C | 25°C |
| September | 11°C | 17°C | 22°C |
| October | 6°C | 10°C | 13°C |
| November | 3°C | 7°C | 10°C |
| December | 0°C | 4°C | 7°C |
Mariestad: Weather Forecast
July 22
July 23
July 24
July 25
Location & Local Information
Mariestad sits on the shore of Lake Vänern, where water temperatures show clear seasonal variation. In spring (April–May) surface temperatures typically rise from about 4–12 °C (39–54 °F) as the ice melts and the sun warms shallow bays. Summer (June–August) brings the warmest water, commonly around 17–22 °C (63–72 °F) at popular bathing spots, though sheltered coves can be a degree or two higher. During autumn (September–November) the lake cools again, often ranging from 8–15 °C (46–59 °F), and in winter (December–February) open water near Mariestad is usually close to freezing, roughly 0–4 °C (32–39 °F), with ice forming in colder years. Deeper or wind-exposed areas lag behind surface temperatures, so conditions can vary locally.
Swimming in and around Mariestad is generally allowed and commonly practised in summer, thanks to public access to the shoreline and several municipal bathing areas with facilities. Water quality at designated beaches is monitored and usually suitable for bathing during the season, but swimmers should heed local advisories, wind and wave conditions on Vänern, and the risk of cold water and sudden temperature changes. Lifeguard coverage is limited, so personal caution, appropriate clothing, and awareness of currents or boat traffic are important for safe swimming.