Strängnäs — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Strängnäs, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Strängnäs today is 20.8°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 |
|---|---|---|---|
| AUG 3 | 20.7°C | 22.0°C | |
| AUG 4 | 20.7°C | 22.0°C | |
| AUG 5 | 20.9°C | 22.0°C | |
| AUG 6 | 20.9°C | 22.0°C | |
| AUG 7 | 20.9°C | 22.0°C | |
| AUG 8 | 20.9°C | 22.0°C | |
| AUG 9 | 20.8°C | 22.0°C | |
| AUG 10 | 20.8°C | 22.0°C | |
| AUG 11 | 22.0°C | 20.9°C | |
| AUG 12 | 22.0°C | 20.9°C | |
| AUG 13 | 22.0°C | 21.0°C | |
| AUG 14 | 22.0°C | 21.0°C | |
| AUG 15 | 22.0°C | 21.1°C | |
| AUG 16 | 22.0°C | 21.2°C | |
| AUG 17 | 22.0°C | 21.2°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 | 3°C | 7°C | 11°C |
| May | 7°C | 12°C | 18°C |
| June | 12°C | 19°C | 24°C |
| July | 16°C | 22°C | 27°C |
| August | 17°C | 22°C | 27°C |
| September | 12°C | 18°C | 23°C |
| October | 7°C | 11°C | 14°C |
| November | 3°C | 7°C | 10°C |
| December | 0°C | 4°C | 7°C |
Strängnäs: Weather Forecast
August 11
August 12
August 13
August 14
August 15
Location & Local Information
Strängnäs sits on the shores of Lake Mälaren in Södermanland, and water temperatures follow a clear seasonal pattern. In winter the surface is typically close to freezing, around 0–4 °C (32–39 °F), often with ice in the coldest months. Spring sees a gradual rise, roughly 2–12 °C (36–54 °F) as the ice melts and the water stratifies. Early summer brings milder conditions of about 12–18 °C (54–64 °F), while peak summer temperatures in July and August commonly reach 18–22 °C (64–72 °F) in sheltered bays during warm years. By autumn the surface cools again to about 10–15 °C (50–59 °F) as the water mixes and loses heat.
Swimming in and around Strängnäs is generally allowed; Swedish access rights and local bathing spots make the lake reachable for recreational use. Municipalities often monitor popular beaches for bathing water quality in summer, so swimmers should heed local advisories about bacterial levels or cyanobacteria blooms and avoid stagnant, shallow bays when warnings are posted. Cold‑water and ice swimming are practiced by some, but require appropriate safety measures such as companions, flotation aids or cut‑out ice facilities. Boat traffic and variable depths also call for caution even at warmer temperatures.