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Photo: Jamesville-Reservoir-2014-Nov by DASonnenfeld (CC BY-SA 4.0) License

Jamesville Reservoir

Lake · LaFayette, New York

Comfortable for a swim today

Good to swim

Comfortable for a swim today: water temperature is 75°F, within the comfortable 70–86°F range.

  • Water temperature is 75°F, within the comfortable 70–86°F range.
Good to swimGreat conditions today

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Comfortable for a swim today

Good to swim

Comfortable for a swim today: water temperature is 75°F, within the comfortable 70–86°F range.

  • Water temperature is 75°F, within the comfortable 70–86°F range. NOAA buoy 45215, as of Aug 21, 6:56 PM UTC
Water temp
75°F
24°C

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

Live data from NOAA buoy 45215 (43.4 mi away), as of Aug 21, 6:56 PM UTC.

Weather at Jamesville Reservoir

H: 84° L: 54°
Sunny
Sunny
75°
|
Feels like 73°
Precipitation
17%
Humidity
39%
Wind
4 mph
UV Index
5.5
Water Conditions:
🏊Perfect for swimming🧴High UV - use sunscreen
12 AM
Clear
56°
3 AM
Fog
57°
6 AM
Fog
57°
9 AM
Patchy rain nearby
62°
12 PM
Patchy rain nearby
76°
3 PM
Sunny
75°
6 PM
Sunny
74°
9 PM
Clear
62°

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Frequently asked questions

Where is Jamesville Reservoir?
Jamesville Reservoir is a lake in LaFayette, New York.
What is the water temperature at Jamesville Reservoir?
As of August 21, 2026, the water temperature at Jamesville Reservoir in LaFayette, New York is 75°F (24°C), measured by NOAA buoy 45215, 43.4 miles away.
Can you swim at Jamesville Reservoir?
Comfortable for a swim today: water temperature is 75°F, within the comfortable 70–86°F range. Checked August 21, 2026.
How is Jamesville Reservoir rated?
Jamesville Reservoir in LaFayette, New York has an average visitor rating of 4 out of 5, based on 20 reviews.

Visitor Reviews

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Best Times to Visit

Right Now
Perfect conditions right now!
🏞️ 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

LaFayette, NY 13078

LaFayette, New York 13078

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