San Marcos River & Wimberley, TX
Today’s Forecast:
Today’s Report:
Hiking
Ideal conditions for hiking. Comfortable temperature (high near 76°F), light wind, and clear forecast.
- Temp: Marginal weather factor
- Rain: Favorable conditions
- Wind: Favorable conditions
- Thunderstorm: Favorable conditions
Biking
Ideal conditions for biking. Comfortable temperature (high near 76°F), light wind, and clear forecast.
- Temp: Favorable conditions
- Rain: Favorable conditions
- Wind: Favorable conditions
- Thunderstorm: Favorable conditions
Paddling
Ideal conditions for paddling. Comfortable temperature (high near 76°F), light wind, and clear forecast.
- Temp: Favorable conditions
- Rain: Favorable conditions
- Wind: Favorable conditions
- Thunderstorm: Favorable conditions
Fishing
Ideal conditions for fishing. Comfortable temperature (high near 76°F), light wind, and clear forecast.
- Temp: Marginal weather factor
- Rain: Favorable conditions
- Wind: Favorable conditions
- Thunderstorm: Favorable conditions
About San Marcos River & Wimberley
Forecast guidance is centered on the principal visitor area near San Marcos. The wider spring river and regional trail hub setting reaches toward Wimberley, so local wind and access deserve a second check.
Plan Around Conditions
Confirm the named launch, water level and wind exposure near San Marcos; a usable shoreline does not guarantee a safe return trip. Consult the forecast, gauge, harbor or launch authority responsible for the exact water and access point before relying on conditional access.
Weather Tips
- Turn toward the selected launch before thunderstorm outflow reaches open water; wind near Wimberley can arrive ahead of rain.
- For heat, favor the portion near San Marcos with the shortest return and dependable shade or drinking-water plan.
Nearby Towns and Areas
- San Marcos
- Wimberley
- Blanco River
- Spring Lake
- Five Mile Dam
Adjust the Day to the Forecast
If wind or water conditions rule out the planned launch, use a legal shore-fishing or land route near San Marcos instead of moving blindly to another access point.
7-Day Forecast
Weather by Season
Winter
Mild spells alternate with hard fronts near San Marcos; ice is uncommon but can close bridges, shaded limestone and elevated roads abruptly.
Spring
Peak flash-flood season can raise creeks and low-water crossings from upstream rain; spring flow must be checked for the exact watershed around Wimberley.
Summer
River and lake use depends on releases, spring flow, drought and bacteria notices as heat builds; popular access near San Marcos may also reach capacity.
Fall
Cooler weather expands hiking and camping time, but drought, burn bans and isolated flood-producing storms can change plans near Wimberley.
Key Climate Data Points
- Local climate: Spring river and regional trail hub conditions near San Marcos make spring flow the leading local planning signal.
- Annual mean temperature: Near San Marcos, the annual mean temperature is generally in the mid to upper 60s °F; open terrain produces large sun-and-wind exposure.
- Warmest or primary-use period: June through August is the hottest period; spring flow often determines whether the primary activity remains practical.
- Coldest or limited-access period: December through February is coolest; snow is unusual, but northers, cold water and isolated freezes can close exposed access.
- Most consequential precipitation period: Spring and early fall is the most consequential precipitation period here because it can affect spring flow near Wimberley.
- Primary hazard timing: Spring severe storms, flash floods and summer heat most directly affects flood conditions.
- Best general outdoor window: March through may and october through november when flood risk is low; the useful window still depends on spring flow.