Nyköping — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Nyköping, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Nyköping today is 19.1°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 |
|---|---|---|---|
| AUG 24 | 18.2°C | 19.0°C | |
| AUG 25 | 18.2°C | 19.0°C | |
| AUG 26 | 18.2°C | 19.0°C | |
| AUG 27 | 18.2°C | 19.0°C | |
| AUG 28 | 18.4°C | 19.0°C | |
| AUG 29 | 18.3°C | 19.0°C | |
| AUG 30 | 18.3°C | 19.0°C | |
| AUG 31 | 18.4°C | 19.0°C | |
| SEP 1 | 16.0°C | 18.9°C | |
| SEP 2 | 16.0°C | 18.8°C | |
| SEP 3 | 16.0°C | 18.6°C | |
| SEP 4 | 16.0°C | 18.5°C | |
| SEP 5 | 16.0°C | 18.3°C | |
| SEP 6 | 16.0°C | 18.2°C | |
| SEP 7 | 16.0°C | 18.0°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 | 18°C |
| June | 12°C | 18°C | 23°C |
| July | 15°C | 20°C | 25°C |
| August | 14°C | 19°C | 24°C |
| September | 11°C | 16°C | 21°C |
| October | 6°C | 10°C | 13°C |
| November | 3°C | 7°C | 10°C |
| December | 0°C | 4°C | 7°C |
Nyköping: Weather Forecast
September 1
September 2
September 3
September 4
Location & Local Information
Nyköping (in Swedish: Nyköping) in Södermanland lies amid lakes and rivers whose temperatures vary strongly through the year. In winter many lakes and slow-moving waterways sit at or near freezing, about 0–3 °C (32–37 °F), and are frequently ice-covered; flowing rivers can remain slightly warmer but still close to 0–4 °C (32–39 °F). During spring the surface waters typically rise to roughly 4–12 °C (39–54 °F) as ice melts and the sun gains strength. In summer common lake temperatures are in the 16–22 °C range (61–72 °F), and during particularly warm spells shallow lakes may reach around 24 °C (75 °F); rivers usually stay a few degrees cooler, often 14–20 °C (57–68 °F). In autumn waters cool again, moving from about 12 °C down toward 4–8 °C (54–39 °F) by late season.
Swimming in Nyköping’s lakes and rivers is generally allowed and popular in summer at designated bathing sites, but it is subject to practical and safety considerations. The municipality monitors water quality and can advise against bathing when cyanobacterial blooms occur or after heavy runoff; many beaches lack lifeguards so swimmers should be cautious about currents, sudden depth changes and lower river temperatures. Ice swimming and winter bathing are practiced by some, but require safe ice conditions and appropriate precautions.