Bogstadvannet — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Bogstadvannet, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Bogstadvannet today is 11.8°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
❌ As of today, the minimum water temperature ranges from 50°F (10°C) to 54°F (12°C). The water is slightly warmer, but still cool for most people. Swimming in such conditions is possible, but for most people, the time spent in the water should be limited to avoid hypothermia. Even experienced swimmers may feel discomfort if they stay in the water for too long. To improve comfort and safety, a wetsuit 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 |
|---|---|---|---|
| SEP 14 | 12.3°C | 18.0°C | |
| SEP 15 | 12.9°C | 18.0°C | |
| SEP 16 | 12.7°C | 18.0°C | |
| SEP 17 | 12.4°C | 18.0°C | |
| SEP 18 | 12.1°C | 18.0°C | |
| SEP 19 | 12.1°C | 18.0°C | |
| SEP 20 | 12.0°C | 18.0°C | |
| SEP 22 | 18.0°C | 12.1°C | |
| SEP 23 | 18.0°C | 12.4°C | |
| SEP 24 | 18.0°C | 12.7°C | |
| SEP 25 | 18.0°C | 13.0°C | |
| SEP 26 | 18.0°C | 13.4°C | |
| SEP 27 | 18.0°C | 13.7°C | |
| SEP 28 | 18.0°C | 14.0°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 | 2°C | 7°C | 11°C |
| May | 7°C | 12°C | 18°C |
| June | 10°C | 17°C | 24°C |
| July | 16°C | 22°C | 27°C |
| August | 16°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 |
Bogstadvannet: Water Temperature by Location
Bogstadvannet: Weather Forecast
September 21
September 22
September 23
September 24
September 25
September 26
Location & Local Information
Bogstadvannet (Norwegian: Bogstadvannet) is a popular recreational lake near Oslo in the former Akershus County. Water temperatures vary considerably through the year: in spring (April–May) surface temperatures typically rise from about 4–12 °C (39–54 °F) as ice melts and the sun strengthens. Summer (June–August) brings the warmest conditions, with surface readings often between 16–24 °C (61–75 °F) on sunny days, though cooler weather can keep it nearer 14–18 °C (57–64 °F). Into autumn (September–October) temperatures commonly fall to 8–14 °C (46–57 °F). In winter the lake can drop to around 0–4 °C (32–39 °F) and often freezes over, making open-water swimming impractical and hazardous.
Swimming at Bogstadvannet is generally allowed and widely practised because the shoreline includes designated bathing areas and public access for recreation. Local authorities routinely monitor water quality during the bathing season and issue advisories if blue‑green algae, elevated bacterial levels, or other temporary concerns arise; when such notices are posted swimming should be avoided. There are few permanent lifeguards, so visitors are expected to use common-sense precautions against cold shock and sudden weather changes, and to follow any official guidance about when bathing is advisable.