Halden — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Halden, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Halden today is 13.9°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 |
|---|---|---|---|
| JUN 3 | 13.4°C | 18.0°C | |
| JUN 4 | 13.4°C | 18.0°C | |
| JUN 5 | 13.9°C | 18.0°C | |
| JUN 6 | 13.9°C | 18.0°C | |
| JUN 7 | 14.0°C | 18.0°C | |
| JUN 8 | 14.0°C | 18.0°C | |
| JUN 10 | 13.9°C | 18.0°C | |
| JUN 11 | 18.0°C | 14.1°C | |
| JUN 12 | 18.0°C | 14.3°C | |
| JUN 13 | 18.0°C | 14.5°C | |
| JUN 14 | 18.0°C | 14.7°C | |
| JUN 15 | 18.0°C | 14.9°C | |
| JUN 16 | 18.0°C | 15.1°C | |
| JUN 17 | 18.0°C | 15.3°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 | 7°C | 12°C | 17°C |
| June | 13°C | 18°C | 23°C |
| July | 16°C | 21°C | 26°C |
| August | 16°C | 21°C | 26°C |
| September | 12°C | 17°C | 22°C |
| October | 7°C | 11°C | 14°C |
| November | 3°C | 7°C | 10°C |
| December | 0°C | 4°C | 7°C |
Halden: Weather Forecast
June 9
June 10
June 11
June 12
June 13
Location & Local Information
Halden, historically in Østfold county in southeastern Norway, has numerous lakes and rivers that vary seasonally in temperature. In winter many smaller lakes hover around 0–4 °C (32–39 °F) and may ice over during cold spells, while larger or flowing waters can stay close to 0–2 °C (32–36 °F). Spring warming typically brings surface temperatures to roughly 4–12 °C (39–54 °F) as ice melts. During summer the more sheltered lakes commonly reach 15–22 °C (59–72 °F), and on warm, calm weeks temperatures can briefly approach 24–25 °C (75–77 °F). Rivers tend to be cooler and faster, often in the 8–18 °C (46–64 °F) range in summer and noticeably colder in shoulder seasons. Autumn sees a steady decline, with many inland waters falling back toward 6–14 °C (43–57 °F) before freezing resumes.
Swimming in Halden’s lakes and rivers is generally allowed and popular in summer, with several maintained bathing spots and public access under Norway’s outdoor access traditions, but local restrictions or private property signs can apply. Authorities or local municipalities occasionally post water-quality advisories after heavy rain; moreover swimmers should be cautious about cold-water shock, currents, submerged hazards and the frequent absence of lifeguards. For safe swimming, choose established bathing areas, check any local notices, and avoid entering very cold or fast-flowing water without precaution.