Härnösand — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Härnösand, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Härnösand today is 8.1°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
❌ As of today, the minimum water temperature ranges from 47°F (8°C) to 50°F (10°C). This is still cool water, suitable only for experienced swimmers or those accustomed to cold water. Swimming in such conditions is possible, but not recommended for prolonged periods. Extra caution should be taken during extended exposure, as the cold water can cause heat loss and lead to hypothermia. For added comfort, special clothing 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.
Water Temperature Chart Over the Last 30 Days
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| OCT 4 | 8.8°C | 8.0°C | |
| OCT 5 | 9.1°C | 8.0°C | |
| OCT 6 | 8.9°C | 8.0°C | |
| OCT 7 | 8.6°C | 8.0°C | |
| OCT 8 | 8.8°C | 8.0°C | |
| OCT 9 | 8.9°C | 8.0°C | |
| OCT 10 | 8.3°C | 8.0°C | |
| OCT 11 | 8.1°C | 8.0°C | |
| OCT 12 | 8.0°C | 8.1°C | |
| OCT 13 | 8.0°C | 8.1°C | |
| OCT 14 | 8.0°C | 8.1°C | |
| OCT 15 | 8.0°C | 8.1°C | |
| OCT 16 | 8.0°C | 8.1°C | |
| OCT 17 | 8.0°C | 8.1°C | |
| OCT 18 | 8.0°C | 8.1°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 | 0°C | 2°C | 5°C |
| April | 0°C | 3°C | 7°C |
| May | 6°C | 12°C | 17°C |
| June | 11°C | 16°C | 21°C |
| July | 14°C | 19°C | 24°C |
| August | 14°C | 19°C | 24°C |
| September | 10°C | 15°C | 20°C |
| October | 4°C | 8°C | 11°C |
| November | 2°C | 6°C | 9°C |
| December | 0°C | 2°C | 5°C |
Härnösand: Weather Forecast
October 12
October 13
October 14
October 15
Location & Local Information
Härnösand (Härnösand) in Västernorrland County sits amid a landscape of small lakes and rivers whose temperatures reflect the cool northern Swedish climate. In winter surface water in lakes and slow rivers typically lies at or near 0 °C (32 °F) when ice is present; even open-water river currents often remain close to 0–4 °C (32–39 °F). In spring the waters warm slowly, commonly ranging from about 1–10 °C (34–50 °F) through April and May. Peak summer temperatures in shallow, sheltered lakes can reach roughly 15–20 °C (59–68 °F), while larger lakes and flowing rivers are usually cooler, more often 10–16 °C (50–61 °F). During autumn the water generally cools from around 10–15 °C down to 5–8 °C (41–46 °F) before freeze-up.
Swimming in inland waters around Härnösand is generally allowed during the ice‑free season and in designated bathing spots because water bodies are public where not privately restricted; municipalities maintain some lakeside beaches and marked river access points. However, conditions vary: strong currents, cold temperatures outside midsummer, and local rules can limit safe bathing in certain river stretches, and ice cover in winter prohibits normal swimming (though organized ice dipping occurs in prepared locations). Visitors are advised to use official bathing areas and heed local signage for safety.