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 19.1°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 65°F (18°C) to 68°F (20°C). This is already quite warm water, which is ideal for most people. Swimming becomes comfortable, and prolonged stays in the water do not cause discomfort. This temperature is perfect for family trips and for those who prefer warmer water. It is also comfortable for water sports such as surfing or swimming. 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 |
|---|---|---|---|
| JUL 14 | 20.0°C | 21.8°C | |
| JUL 15 | 19.9°C | 21.8°C | |
| JUL 16 | 19.9°C | 21.8°C | |
| JUL 17 | 21.0°C | 21.8°C | |
| JUL 18 | 21.0°C | 21.8°C | |
| JUL 19 | 21.0°C | 21.8°C | |
| JUL 20 | 21.0°C | 21.8°C | |
| JUL 21 | 19.1°C | 21.8°C | |
| JUL 22 | 21.8°C | 19.2°C | |
| JUL 23 | 21.8°C | 19.4°C | |
| JUL 24 | 21.8°C | 19.5°C | |
| JUL 25 | 21.8°C | 19.6°C | |
| JUL 26 | 21.8°C | 19.8°C | |
| JUL 27 | 21.8°C | 19.9°C | |
| JUL 28 | 21.8°C | 20.0°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 | 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
July 22
July 23
July 24
July 25
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.