Ronneby — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Ronneby, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Ronneby today is 14.2°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 54°F (12°C) to 60°F (15°C). The water is significantly warmer, and swimming becomes possible for most people. However, caution may still be required for prolonged stays in the water, as extended exposure can cause discomfort. This is a suitable temperature range for short swims and for those accustomed to cooler water. For more comfortable swimming, it is recommended to use proper gear. 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 |
|---|---|---|---|
| SEP 13 | 15.3°C | 14.0°C | |
| SEP 14 | 14.9°C | 14.0°C | |
| SEP 15 | 14.6°C | 14.0°C | |
| SEP 16 | 14.8°C | 14.0°C | |
| SEP 17 | 14.9°C | 14.0°C | |
| SEP 18 | 14.9°C | 14.0°C | |
| SEP 19 | 13.9°C | 14.0°C | |
| SEP 20 | 14.1°C | 14.0°C | |
| SEP 21 | 14.0°C | 14.2°C | |
| SEP 22 | 14.0°C | 14.2°C | |
| SEP 23 | 14.0°C | 14.2°C | |
| SEP 24 | 14.0°C | 14.2°C | |
| SEP 25 | 14.0°C | 14.2°C | |
| SEP 26 | 14.0°C | 14.1°C | |
| SEP 27 | 14.0°C | 14.1°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 | 7°C | 10°C |
| May | 7°C | 11°C | 16°C |
| June | 15°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 |
Ronneby: Weather Forecast
September 21
September 22
September 23
September 24
September 25
September 26
Location & Local Information
Ronneby (Swedish: Ronneby) in Blekinge lies close to a mix of coastal waters and inland lakes where water temperatures vary with the seasons and local conditions. In lakes around Ronneby, winter temperatures commonly sit around 0–4 °C (32–39 °F) and can drop below freezing where ice forms. Spring sees a gradual rise to roughly 4–14 °C (39–57 °F) depending on sunshine and depth. Summer is the warmest period, with typical surface temperatures between 16–22 °C (61–72 °F) and occasionally reaching 24 °C (75 °F) in shallow, sheltered bays during hot spells. In autumn the water cools back to about 10–15 °C (50–59 °F). Shallow, sheltered areas warm faster than deeper parts, so local readings can differ from regional averages.
Swimming is generally allowed at official beaches, piers and designated bathing spots in and around Ronneby, and the municipality monitors water quality at popular locations; signs indicate closures or warnings when needed. Many people swim in summer when temperatures are most comfortable, while some practice ice swimming in winter where safety measures and ice thickness permit. Swimmers should be aware of cold-water risks in spring and autumn, follow posted advice, and choose maintained bathing sites for safety.