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Satellite view of Duncan Lake

Duncan Lake

Lake

Cool water — ease in carefully

Use caution

Cool water — ease in carefully: water temperature is 65°F, cool enough to cause cold-water shock on a sudden entry.

  • Water temperature is 65°F, cool enough to cause cold-water shock on a sudden entry.

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Cool water — ease in carefully

Use caution

Cool water — ease in carefully: water temperature is 65°F, cool enough to cause cold-water shock on a sudden entry.

  • Water temperature is 65°F, cool enough to cause cold-water shock on a sudden entry. NOAA buoy CASM1, as of Aug 22, 6:48 AM UTC
Water temp
65°F
18°C

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

Live data from NOAA buoy CASM1 (43.2 mi away), as of Aug 22, 6:48 AM UTC.

Weather at Duncan Lake

H: 76° L: 58°
Partly Cloudy
Partly Cloudy
59°
|
Feels like 58°
Precipitation
57%
Humidity
70%
Wind
3 mph
UV Index
0
Water Conditions:
🥶Too cold for most swimmers
12 AM
Overcast
62°
3 AM
Partly Cloudy
59°
6 AM
Overcast
61°
9 AM
Overcast
68°
12 PM
Overcast
74°
3 PM
Overcast
75°
6 PM
Light rain shower
59°
9 PM
Fog
59°

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Frequently asked questions

Where is Duncan Lake?
Duncan Lake is a lake in New Hampshire.
What is the water temperature at Duncan Lake?
As of August 22, 2026, the water temperature at Duncan Lake in New Hampshire is 65°F (18°C), measured by NOAA buoy CASM1, 43.2 miles away.
Can you swim at Duncan Lake?
Cool water — ease in carefully: water temperature is 65°F, cool enough to cause cold-water shock on a sudden entry. Checked August 22, 2026.

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Best Times to Visit

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Right Now
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

New Hampshire

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