Lake Letta Water Temperature
Lake Letta in Highlands County, Florida averages about 91°F at the surface in summer — warmest in Aug (~91°F) and coldest in Feb (~66°F). These are typical values by month, not a live reading.
Typical water temperature by month
Typical surface water temperature by month, from 37 field readings (2010–2024) via the EPA Water Quality Portal. Months with too few readings are left blank.
Is Lake Letta warm enough to swim?
Very comfortable for swimming. Warm surface water can also favor blue-green algae in nutrient-rich lakes, so check for advisories before you go in.
Want more than temperature? Lake Letta scored C on water quality — clarity, algae, phosphorus, depth, fish species, and swimming safety, all on one report card.
Water temperatures at nearby Florida lakes
Summer average ~86°F
Summer average ~90°F
Summer average ~85°F
Summer average ~89°F
Summer average ~87°F
Summer average ~82°F
Explore water temperatures
Where to stay near Lake Letta
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Frequently asked questions
What is the water temperature of Lake Letta?
Lake Letta has a typical summer surface temperature of about 91°F. It is usually warmest in August (around 91°F) and coldest in February (around 66°F). These are typical values by month from 37 EPA Water Quality Portal field readings (2010–2024), not a live reading.
When is Lake Letta warmest?
Surface water at Lake Letta is typically warmest in August, reaching about 91°F. Lake surface temperature lags air temperature by several weeks, so the warmest water usually arrives in mid-to-late summer even though the hottest air can come earlier.
Is Lake Letta warm enough to swim?
At its typical summer peak of about 91°F, Lake Letta rates as "warm" for swimming. Very comfortable for swimming. Warm surface water can also favor blue-green algae in nutrient-rich lakes, so check for advisories before you go in.
Where does this Lake Letta water temperature data come from?
Every temperature on this page is a typical (climatological) value computed from real surface-water field readings collected by state and federal agencies and published through the EPA Water Quality Portal — 37 readings from 2 monitoring stations between 2010 and 2024. They describe what is typical for each month, not the temperature right now.
About this data
Water temperatures are a climatology — the typical value for each month, averaged from real surface-water field readings collected by state and federal agencies and published through the EPA Water Quality Portal. They tell you what to expect, not the temperature at this moment. Actual conditions vary with recent weather, depth, and time of day.