Can you swim here today?
Markle Lake
Texas · Reservoir
Use caution — an official advisory is in effect
Use cautionAs of August 21, 2026, the water temperature at Markle Lake is 96°F (35°C), measured by NOAA buoy EMAT2, 26.5 miles away.
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 96°F, warm enough that sun and heat are the main concerns. — NOAA buoy EMAT2, as of Aug 21, 11:18 PM UTC
- No official beach advisory posted (Texas Beach Watch (Texas GLO) checked).
Water temp
96°F
35°C
Official advisories
Checked against Texas Beach Watch (Texas GLO) — no advisory posted.
Live data from NOAA buoy EMAT2 (26.5 mi away), as of Aug 21, 11:18 PM UTC.
Before you get in
- Never swim alone — and keep weaker swimmers within arm's reach.
- Scout depth and entry/exit points before you get in.
- Read the current: avoid fast, rising, or murky water.
- Check the forecast — get out well before storms or lightning.
- Obey posted signs, flags, and lifeguard guidance.
Read next
Conditions are for general information only and can change quickly. Always judge the water in person and follow posted advisories and local guidance before swimming or paddling.