Where is Jamestown Reservoir?

Jamestown Reservoir is a reservoir in Massachusetts.

What is the water temperature at Jamestown Reservoir?

As of August 22, 2026, the water temperature at Jamestown Reservoir in Massachusetts is 70°F (21°C), measured by NOAA buoy NWPR1, 3.1 miles away.

Updated June 9, 2026

Jamestown Reservoir

Reservoir

Comfortable for a swim today

Good to swim

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

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

See full conditions ↓Can I swim today? →

Good to swimRainy today

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Comfortable for a swim today

Good to swim

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

Water temperature is 70°F, within the comfortable 70–86°F range. — NOAA buoy NWPR1, as of Aug 22, 11:48 AM UTC

Water temp

70°F

21°C

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

Live data from NOAA buoy NWPR1 (3.1 mi away), as of Aug 22, 11:48 AM UTC.

Live map near here →

Weather at Jamestown Reservoir

H: 74° L: 64°

Patchy rain nearby

67°

Feels like 65°

Precipitation

74%

Humidity

85%

Wind

11 mph

UV Index

0.2

Water Conditions:

🏊Cool but swimmable🌧️Rain expected

12 AM

65°

3 AM

65°

6 AM

66°

9 AM

67°

12 PM

70°

3 PM

74°

6 PM

66°

9 PM

65°

Pack smarter for Jamestown Reservoir

Useful gear categories for this kind of water spot. These links open Amazon search results so you can compare current options.

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Inflatable PaddleboardA popular way to explore calm coves and shorelines.

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Life JacketImportant around boats, paddling, and deeper swimming areas.

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Floating CoolerKeeps drinks nearby for swim areas, docks, and boats.

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Waterproof Phone PouchProtects phones around docks, boats, and splashy shorelines.

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Frequently asked questions

Where is Jamestown Reservoir?: Jamestown Reservoir is a reservoir in Massachusetts.
What is the water temperature at Jamestown Reservoir?: As of August 22, 2026, the water temperature at Jamestown Reservoir in Massachusetts is 70°F (21°C), measured by NOAA buoy NWPR1, 3.1 miles away.
Can you swim at Jamestown Reservoir?: Comfortable for a swim today: water temperature is 70°F, within the comfortable 70–86°F range. Checked August 22, 2026.

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Not ideal for outdoor activities today

🏞️ 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

Massachusetts

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