Lake
Bergsee Güntersberge
Bergsee Güntersberge water temperature is currently Very Cold. Serious cold. Cold shock risk is high. Experienced swimmers with proper kit only. Located in the North Temperate climate zone, it is currently spring. Sustained low air temperatures (smoothed average 6°C) have kept the lake very cold. A full wetsuit is essential. This is for experienced cold-water swimmers only.
Last updated:
Very Cold
Serious cold. Cold shock risk is high. Experienced swimmers with proper kit only.
Sustained low air temperatures (smoothed average 6°C) have kept the lake very cold. A full wetsuit is essential. This is for experienced cold-water swimmers only.
Lakes warm slowly in spring. Water is often colder than air conditions suggest.
Lake size
Larger lakes warm and cool slowly. Ponds respond quickly to air temperature.
Swum here recently?
Community temperature reports are the most reliable local data.
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7-Day Forecast
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7.8°C
High 9.2° / Low 4.4°
Cold conditions, a wetsuit is advisable
5.7°C
54cm depth
Cool ground, moderate baseline temperature
Weak
116 W/m²
Overcast skies, limited surface warming
10 km/h
E, gusts 20
Light E breeze, minimal surface cooling
7°C
Feels like wet
Cool on exit. Get dressed quickly, especially in the wind.
9.9 mm
7-day total
Low recent rainfall, water likely clear and settled.
Model estimates. Always assess the water yourself before entering.
Frequently asked questions
How is the lake water temperature estimated?
Lake temperature is estimated using exponential smoothing of 60 days of air temperature data, based on Kettle et al. (2004). The algorithm accounts for lake thermal mass. Larger lakes respond more slowly to air temperature changes. This is not a direct measurement; accuracy is approximately plus or minus 2 to 3 degrees C.
What do the temperature categories mean?
Each category covers a 4 degree C band: Warm (20 degrees C or above, no wetsuit needed), Comfortable (16 to 20 degrees C, most swimmers fine), Cool (12 to 16 degrees C, wetsuit optional), Cold (8 to 12 degrees C, wetsuit recommended), Very Cold (4 to 8 degrees C, wetsuit essential), Ice Risk (below 4 degrees C, experienced swimmers only).
What is the geographic zone?
The zone is derived from the lake's latitude and altitude. It reflects the climate regime: temperate zones have the highest model accuracy; alpine and equatorial highland zones have reduced accuracy due to solar heating effects not fully captured by air temperature data alone.
What is the swimmer exit temperature?
The exit temperature uses the Steadman (1984) apparent temperature formula, which accounts for wind speed and humidity on wet skin. Exiting water in wind with wet skin causes significantly faster heat loss than the air temperature alone suggests, especially at speeds above 20 km/h.