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 17.7°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 60°F (15°C) to 65°F (18°C). The water is comfortable for most people, making it an ideal range for water sports enthusiasts. The temperature does not cause significant discomfort, and swimming will be pleasant for the majority. However, it's important to remember that prolonged exposure to the water can still lead to cooling, so it's essential to monitor the time spent in the water, especially for children or elderly people. 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 3 | 18.1°C | 22.0°C | |
| AUG 4 | 18.1°C | 22.0°C | |
| AUG 5 | 18.1°C | 22.0°C | |
| AUG 6 | 17.5°C | 22.0°C | |
| AUG 7 | 17.5°C | 22.0°C | |
| AUG 8 | 17.5°C | 22.0°C | |
| AUG 9 | 17.5°C | 22.0°C | |
| AUG 10 | 17.7°C | 22.0°C | |
| AUG 11 | 22.0°C | 17.9°C | |
| AUG 12 | 22.0°C | 18.1°C | |
| AUG 13 | 22.0°C | 18.3°C | |
| AUG 14 | 22.0°C | 18.6°C | |
| AUG 15 | 22.0°C | 18.8°C | |
| AUG 16 | 22.0°C | 19.0°C | |
| AUG 17 | 22.0°C | 19.2°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 | 17°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
August 11
August 12
August 13
August 14
August 15
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.