Conditions
What is the water temperature in Perdido Key today?
The Gulf at Perdido Key runs roughly from the low 60s°F in winter to the upper 80s°F at the peak of summer. It's comfortably swimmable from late spring through October and bath-warm in July and August. For today's exact reading, we show the live water temperature on the Beach Today page.
Water temperature by season
Rough monthly averages for the Gulf at Perdido Key:
- Winter (Dec–Feb): low-to-mid 60s — too cold for most people to swim.
- Spring (Mar–May): climbs from the high 60s into the high 70s; swimmable by May.
- Summer (Jun–Aug): mid 80s, often peaking in the upper 80s — bath-warm.
- Fall (Sep–Nov): holds summer warmth into October, then cools through November.
See the live reading
We display the current Gulf water temperature, pulled from the nearest offshore buoy, on the Beach Today page for both sides of the state line. It updates throughout the day, so it's the right place to check before a swim.
Keep reading
More on conditions · see the full gulf conditions & beach weather — perdido key hub →
Reviewed June 2026. Conditions change daily — for live numbers see Beach Today.