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The Woodlands Today
By the People, for the People
Cooler Weather Ahead for Ironman Texas
Triathlon competitors face humid conditions, possible storms on race day
Apr. 16, 2026 at 11:53am
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As competitors push their limits in the Ironman Texas triathlon, the looming presence of an approaching storm serves as a powerful reminder of the raw, elemental forces that athletes must confront.The Woodlands TodayThe forecast for the Ironman Texas triathlon in The Woodlands this weekend calls for warm, humid conditions during the day on Saturday, with a chance of showers and thunderstorms in the late afternoon and evening as a front moves through the area. Temperatures are expected to be in the low to mid 80s, with high humidity making it feel even warmer. Sunday will bring cooler, drier weather with highs in the low 70s.
Why it matters
The weather conditions can have a major impact on the performance and safety of Ironman competitors, who will be swimming, biking, and running for hours in the Texas heat and humidity. Organizers and participants will need to closely monitor the forecast and be prepared to adjust the event if necessary due to severe weather.
The details
On Saturday, temperatures at the start of the Ironman triathlon are expected to be around 70 degrees, rising to the low to mid 80s during the afternoon. Humidity levels will be high, with dewpoints around 70 degrees and relative humidity near 90% at the start. There is a slight chance of light showers through the early afternoon. In the late afternoon and evening, a front is expected to move through the area, bringing a healthy chance of showers and possibly thunderstorms. While these storms are not expected to be severe, they could still impact the latter stages of the race.
- Sunrise temperatures on Saturday will be around 70 degrees.
- Afternoon highs on Saturday are forecast to reach the low to mid 80s.
- A front is expected to move through the area between 4-8 pm on Saturday, bringing a chance of showers and thunderstorms.
- Sunday will see highs in the low 70s with drier conditions.
- Showers are possible again on Monday and Tuesday as an onshore flow returns.
The players
Ironman Texas
An annual triathlon event held in The Woodlands, Texas, consisting of a 2.4-mile swim, 112-mile bike ride, and 26.2-mile run.
Weather Bell
A weather forecasting company that provided specific details on the expected conditions for the Ironman Texas event.
What they’re saying
“Relative humidity at the start of the Ironman triathlon will be 90 percent, or higher.”
— Weather Bell
What’s next
Organizers and participants will need to closely monitor the weather forecast in the days leading up to the Ironman Texas event and be prepared to adjust the schedule or take other precautions if severe storms are expected on race day.
The takeaway
The weather conditions for the Ironman Texas triathlon this weekend will present a significant challenge for competitors, with hot, humid conditions during the day on Saturday giving way to a chance of showers and thunderstorms in the late afternoon and evening. Careful monitoring of the forecast and preparedness for potential weather disruptions will be crucial for the success and safety of the event.
