Where is Pontoosuc Lake?

Pontoosuc Lake is a lake in Massachusetts.

What is the water temperature at Pontoosuc Lake?

As of August 22, 2026, the water temperature at Pontoosuc Lake in Massachusetts is 77°F (25°C), measured by NOAA buoy CXHN6, 29.6 miles away.

How is Pontoosuc Lake rated?

Pontoosuc Lake in Massachusetts has an average visitor rating of 4.8 out of 5, based on 73 reviews.

Updated August 13, 2025

1 / 3

Photo: Pontoosuc Lake trolley station 1908 postcard by Unknown authorUnknown author (Public domain) License

Pontoosuc Lake

Lake

4.8(73 reviews)

Read reviews

Comfortable for a swim today

Good to swim

Comfortable for a swim today: water temperature is 77°F, within the comfortable 70–86°F range.

Water temperature is 77°F, within the comfortable 70–86°F range.

See full conditions ↓Can I swim today? →

Good to swimCool today

Comfortable for a swim today

Good to swim

Comfortable for a swim today: water temperature is 77°F, within the comfortable 70–86°F range.

Water temperature is 77°F, within the comfortable 70–86°F range. — NOAA buoy CXHN6, as of Aug 22, 9:48 AM UTC

Water temp

77°F

25°C

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

Live data from NOAA buoy CXHN6 (29.6 mi away), as of Aug 22, 9:48 AM UTC.

Live map near here →

Weather at Pontoosuc Lake

H: 71° L: 57°

Overcast

57°

Feels like 55°

Precipitation

75%

Humidity

75%

Wind

3 mph

UV Index

Water Conditions:

🥶Too cold for most swimmers

12 AM

60°

3 AM

58°

6 AM

57°

9 AM

66°

12 PM

69°

3 PM

67°

6 PM

62°

9 PM

59°

Pack smarter for Pontoosuc Lake

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

As an Amazon Associate we earn from qualifying purchases.

Inflatable PaddleboardA popular way to explore calm coves and shorelines.

Compare on Amazon →

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

Compare on Amazon →

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

Compare on Amazon →

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

Compare on Amazon →

Frequently asked questions

Where is Pontoosuc Lake?: Pontoosuc Lake is a lake in Massachusetts.
What is the water temperature at Pontoosuc Lake?: As of August 22, 2026, the water temperature at Pontoosuc Lake in Massachusetts is 77°F (25°C), measured by NOAA buoy CXHN6, 29.6 miles away.
Can you swim at Pontoosuc Lake?: Comfortable for a swim today: water temperature is 77°F, within the comfortable 70–86°F range. Checked August 22, 2026.
How is Pontoosuc Lake rated?: Pontoosuc Lake in Massachusetts has an average visitor rating of 4.8 out of 5, based on 73 reviews.

Visitor Reviews

Be the first to share your experience here

Join our community to share your water adventures

Earn badges as you share your experiences!

💧 Droplet💦 Stream🌊 Wave💧 Current🌀 Tide🌊 Ocean

No reviews yet — share what you know

Been here? A quick note helps the next visitor plan their day. Handy things to mention:

Water temperatureCrowds & parkingBest time to goSafety & access

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

Massachusetts

Massachusetts None

Get Directions

</> Embed this location on your site

Paste this snippet into your website to show a live badge for Pontoosuc Lake — free to use with the included credit link.

<iframe src="https://thewateraroundus.com/embed/location/0a6e6260-7fce-43f4-909b-9ed48e2644e7" width="400" height="150" style="border:0" title="Pontoosuc Lake — The Water Around Us" loading="lazy"></iframe>