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Satellite view of Duncan Lake

Duncan Lake

Lake

Use caution — an official advisory is in effect

Use caution

Use caution — an official advisory is in effect: a Heat Advisory is in effect for Houston; Trinity; Madison; Walker; San Jacinto; Polk; Burleson; Brazos; Washington; Grimes; Montgomery and other areas.

  • A Heat Advisory is in effect for Houston; Trinity; Madison; Walker; San Jacinto; Polk; Burleson; Brazos; Washington; Grimes; Montgomery and other areas.
  • Water temperature is 89°F, warm enough that sun and heat are the main concerns.
Use cautionGreat conditions today

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Use caution — an official advisory is in effect

Use caution

Use caution — an official advisory is in effect: a Heat Advisory is in effect for Houston; Trinity; Madison; Walker; San Jacinto; Polk; Burleson; Brazos; Washington; Grimes; Montgomery and other areas.

  • A Heat Advisory is in effect for Houston; Trinity; Madison; Walker; San Jacinto; Polk; Burleson; Brazos; Washington; Grimes; Montgomery and other areas. NWS Houston/Galveston TX
  • Water temperature is 89°F, warm enough that sun and heat are the main concerns. NOAA buoy MGPT2, as of Aug 22, 1:48 AM UTC
  • No official beach advisory posted (Texas Beach Watch (Texas GLO) checked).
Water temp
89°F
32°C

Official advisories

Checked against Texas Beach Watch (Texas GLO) — no advisory posted.

Live data from NOAA buoy MGPT2 (25.6 mi away), as of Aug 22, 1:48 AM UTC.

Weather at Duncan Lake

H: 101° L: 78°
Clear
Clear
85°
|
Feels like 94°
Precipitation
5%
Humidity
72%
Wind
10 mph
UV Index
0
Water Conditions:
🏊Perfect for swimming
12 AM
Clear
82°
3 AM
Clear
80°
6 AM
Clear
79°
9 AM
Sunny
84°
12 PM
Sunny
96°
3 PM
Sunny
101°
6 PM
Sunny
100°
9 PM
Clear
85°

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Frequently asked questions

Where is Duncan Lake?
Duncan Lake is a lake in Texas.
What is the water temperature at Duncan Lake?
As of August 22, 2026, the water temperature at Duncan Lake in Texas is 89°F (32°C), measured by NOAA buoy MGPT2, 25.6 miles away.
Can you swim at Duncan Lake?
Use caution — an official advisory is in effect: a Heat Advisory is in effect for Houston; Trinity; Madison; Walker; San Jacinto; Polk; Burleson; Brazos; Washington; Grimes; Montgomery and other areas. Checked August 22, 2026.

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Water temperatureCrowds & parkingBest time to goSafety & access

Best Times to Visit

☀️
Right Now
Very warm - visit early morning or evening
🏞️ 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

Texas

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