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Photo: Nuclear Lake- Appalachian Trail - panoramio by Copperhead7 (CC BY 3.0) License

Nuclear Lake

Reservoir

Comfortable for a swim today

Good to swim

Comfortable for a swim today: water temperature is 78°F, within the comfortable 70–86°F range.

  • Water temperature is 78°F, within the comfortable 70–86°F range.

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Comfortable for a swim today

Good to swim

Comfortable for a swim today: water temperature is 78°F, within the comfortable 70–86°F range.

  • Water temperature is 78°F, within the comfortable 70–86°F range. NOAA buoy TKPN6, as of Aug 22, 3:48 AM UTC
Water temp
78°F
26°C

No official beach-advisory feed for Connecticut yet — follow posted signs and local guidance.

Live data from NOAA buoy TKPN6 (32.4 mi away), as of Aug 22, 3:48 AM UTC.

Weather at Nuclear Lake

H: 67° L: 60°
Overcast
Overcast
64°
|
Feels like 66°
Precipitation
36%
Humidity
84%
Wind
3 mph
UV Index
0
Water Conditions:
🥶Too cold for most swimmers
12 AM
Overcast
65°
3 AM
Overcast
64°
6 AM
Overcast
62°
9 AM
Overcast
62°
12 PM
Overcast
66°
3 PM
Patchy rain nearby
64°
6 PM
Patchy rain nearby
64°
9 PM
Mist
62°

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Frequently asked questions

Where is Nuclear Lake?
Nuclear Lake is a reservoir in Connecticut.
What is the water temperature at Nuclear Lake?
As of August 22, 2026, the water temperature at Nuclear Lake in Connecticut is 78°F (26°C), measured by NOAA buoy TKPN6, 32.4 miles away.
Can you swim at Nuclear Lake?
Comfortable for a swim today: water temperature is 78°F, within the comfortable 70–86°F range. Checked August 22, 2026.

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Best Times to Visit

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Cool weather - dress warmly
🏞️ Lakes Tips:
  • Check for boat launch facilities and fees
  • Obtain required fishing licenses before arrival
  • Be aware of lake-specific regulations and restrictions
  • Monitor water quality reports before swimming
Best Seasons:
☀️ Summer (Jun-Aug)🍂 Fall (Sep-Nov)🌸 Spring (Mar-May)

Location & Contact

Connecticut

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