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Photo: Hamilton Reservoir, Holland MA by John Phelan (CC BY 3.0) License

Hamilton Reservoir

Lake · Holland, Massachusetts

Comfortable for a swim today

Good to swim

Comfortable for a swim today: water temperature is 72°F, within the comfortable 70–86°F range.

  • Water temperature is 72°F, within the comfortable 70–86°F range.
  • Heavy rain today can raise bacteria levels near outfalls and river mouths.
Good to swimGood conditions today

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Comfortable for a swim today

Good to swim

Comfortable for a swim today: water temperature is 72°F, within the comfortable 70–86°F range.

  • Water temperature is 72°F, within the comfortable 70–86°F range. NOAA buoy FOXR1, as of Aug 21, 9:30 PM UTC
  • Heavy rain today can raise bacteria levels near outfalls and river mouths.
Water temp
72°F
22°C

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

Live data from NOAA buoy FOXR1 (42.4 mi away), as of Aug 21, 9:30 PM UTC.

Weather at Hamilton Reservoir

H: 74° L: 62°
Light drizzle
Light drizzle
70°
|
Feels like 70°
Precipitation
86%
Humidity
69%
Wind
6 mph
UV Index
0.6
Water Conditions:
🏊Cool but swimmable🌧️Rain expected
12 AM
Light rain
64°
3 AM
Light rain
64°
6 AM
Light rain
63°
9 AM
Sunny
67°
12 PM
Partly Cloudy
74°
3 PM
Patchy rain nearby
67°
6 PM
Light drizzle
70°
9 PM
Light drizzle
67°

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Frequently asked questions

Where is Hamilton Reservoir?
Hamilton Reservoir is a lake in Holland, Massachusetts.
What is the water temperature at Hamilton Reservoir?
As of August 21, 2026, the water temperature at Hamilton Reservoir in Holland, Massachusetts is 72°F (22°C), measured by NOAA buoy FOXR1, 42.4 miles away.
Can you swim at Hamilton Reservoir?
Comfortable for a swim today: water temperature is 72°F, within the comfortable 70–86°F range. Checked August 21, 2026.
How is Hamilton Reservoir rated?
Hamilton Reservoir in Holland, Massachusetts has an average visitor rating of 4.9 out of 5, based on 15 reviews.

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🏞️ 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

Holland, MA 01521

Holland, Massachusetts 01521

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