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Photo: Skating. Eileen Greenwood : Beaver Lake by Conrad Poirier (Public domain) License

Lake Eileen

Lake · Gilmanton, New Hampshire

Cool water — ease in carefully

Use caution

Cool water — ease in carefully: water temperature is 64°F, cool enough to cause cold-water shock on a sudden entry.

  • Water temperature is 64°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 64°F, cool enough to cause cold-water shock on a sudden entry.

  • Water temperature is 64°F, cool enough to cause cold-water shock on a sudden entry. NOAA buoy SEIM1, as of Aug 22, 3:18 AM UTC
Water temp
64°F
18°C

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

Live data from NOAA buoy SEIM1 (40.3 mi away), as of Aug 22, 3:18 AM UTC.

Weather at Lake Eileen

H: 66° L: 56°
Overcast
Overcast
62°
|
Feels like 61°
Precipitation
75%
Humidity
61%
Wind
3 mph
UV Index
0
Water Conditions:
🥶Too cold for most swimmers
12 AM
Overcast
64°
3 AM
Overcast
62°
6 AM
Overcast
61°
9 AM
Overcast
63°
12 PM
Overcast
63°
3 PM
Light drizzle
56°
6 PM
Light rain shower
56°
9 PM
Fog
57°

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Frequently asked questions

Where is Lake Eileen?
Lake Eileen is a lake in Gilmanton, New Hampshire.
What is the water temperature at Lake Eileen?
As of August 22, 2026, the water temperature at Lake Eileen in Gilmanton, New Hampshire is 64°F (18°C), measured by NOAA buoy SEIM1, 40.3 miles away.
Can you swim at Lake Eileen?
Cool water — ease in carefully: water temperature is 64°F, cool enough to cause cold-water shock on a sudden entry. Checked August 22, 2026.
How is Lake Eileen rated?
Lake Eileen in Gilmanton, New Hampshire has an average visitor rating of 4.7 out of 5, based on 7 reviews.
What amenities does Lake Eileen have?
Visitor-listed amenities at Lake Eileen include camping-nearby.

Visitor Reviews

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Best Times to Visit

🧥
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

Gilmanton, NH 03237

Gilmanton, New Hampshire 03237

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Amenities

Camping nearby