Blue Hole Regional Park Water Temperature Today
Blue Hole Regional Park, a natural swimming hole in Texas, United States. The water reaches comfortable swimming temperatures in high summer, and is mild even in winter.
In August Blue Hole Regional Park averages about 24°C, peaking near 24°C in July, August, September and dropping to roughly 19°C at its coldest.
River and swimming-hole temperatures are modelled from long-term monthly averages and refined with live air temperature, wind and UV. Moving water reacts faster to the weather than a lake or the sea.
Blue Hole Regional Park water temperature by month
| Month | Average water temperature | Swimming |
|---|---|---|
| January | 19.3°C | mild |
| February | 19.0°C | mild |
| March | 19.3°C | mild |
| April | 20.3°C | warm |
| May | 21.5°C | warm |
| June | 22.8°C | warm |
| July | 23.7°C | warm |
| August | 24.0°C | hot |
| September | 23.7°C | warm |
| October | 22.8°C | warm |
| November | 21.5°C | warm |
| December | 20.3°C | warm |
Blue Hole Regional Park swim conditions FAQ
What is the water temperature in Blue Hole Regional Park right now?
In August the water in Blue Hole Regional Park averages about 24°C. We refine that long-term average with today's air temperature, because this swimming hole responds quickly to the weather.
When is the best time to swim in Blue Hole Regional Park?
The comfortable swim season — 18°C or warmer — runs through January, February, March, April, May, June, July, August, September, October, November, December, with the warmest water in July, August, September at around 24°C.
Can you swim in Blue Hole Regional Park in winter?
Yes, but winter temperatures drop to roughly 19°C. Below 12°C, cold-water shock is the main risk: enter slowly, never swim alone, and limit time in the water.
Is Blue Hole Regional Park safe for swimming?
Moving and inland water carries different risks from the sea: check flow after rain, avoid weirs and undercut banks, look for submerged rocks before jumping, and respect local access rules and water-quality notices.
Water safety tips
- Check the flow rate after heavy rain — inland water can rise and speed up within hours.
- Never jump before checking depth and submerged rocks; levels change through the season.
- Enter slowly to control cold-water shock, and get out before you start shivering.
- Swim with someone else and agree an exit point downstream before you start.
Swim season here: January, February, March, April, May, June, July, August, September, October, November, December.
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