Magnolia Beach water temperature by month
Swimmable from April through October.
Month by month
| Month | Typical | Feels |
|---|---|---|
| January | 56° | brisk |
| February | 61° | brisk |
| March | 69° | refreshing |
| April | 74° | perfect |
| May | 81° | bath-warm |
| June | 86° | bath-warm |
| July | 87° | bath-warm |
| August | 88° | bath-warm |
| September | 85° | bath-warm |
| October | 78° | perfect |
| November | 69° | refreshing |
| December | 62° | brisk |
The year at a glance
The water right now
Typically about 78° in October — perfect.
from the Port Lavaca station, about 8 miles away
perfect
Jellyfish season
What usually turns up on the Texas coast, and when.
- Texas Parks and Wildlife says the Portuguese man-of-war floats in on the currents and washes up on Texas beaches during the spring to late summer. Texas Parks and Wildlife — jellyfish and their kin
- Their advice is to read the sand before the water: walk the beach first and see whether any are washed up, which tells you they are about — and never step on one, because the stinging cells stay active after the animal dies. Texas Parks and Wildlife — jellyfish and their kin
This is what a season usually looks like, not a forecast of any particular week. Jellyfish drift on wind and current, so the people who watch them say there are tendencies but no guarantees — the lifeguard flags on the day beat any calendar.
About this reading
The Port Lavaca station sits in the bay, which can run a few degrees off the open surf.
Reading from the Port Lavaca station, about 8 miles away.
Warm water says nothing about surf, rip currents, or bacteria — check local lifeguard flags and advisories.