Lake Nehai Tonkayea Water Temperature
Lake Nehai Tonkayea in Chariton County, Missouri averages about 82°F at the surface in summer — warmest in Jul (~83°F) and coldest in May (~69°F). These are typical values by month, not a live reading.
Typical water temperature by month
Typical surface water temperature by month, from 19 field readings (2015–2023) via the EPA Water Quality Portal. Months with too few readings are left blank.
Is Lake Nehai Tonkayea 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 Nehai Tonkayea scored B on water quality — clarity, algae, phosphorus, depth, fish species, and swimming safety, all on one report card.
Water temperatures at nearby Missouri lakes
Summer average ~82°F
Summer average ~78°F
Summer average ~85°F
Summer average ~81°F
Summer average ~83°F
Summer average ~79°F
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Frequently asked questions
What is the water temperature of Lake Nehai Tonkayea?
Lake Nehai Tonkayea has a typical summer surface temperature of about 82°F. It is usually warmest in July (around 83°F) and coldest in May (around 69°F). These are typical values by month from 19 EPA Water Quality Portal field readings (2015–2023), not a live reading.
When is Lake Nehai Tonkayea warmest?
Surface water at Lake Nehai Tonkayea is typically warmest in July, reaching about 83°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 Nehai Tonkayea warm enough to swim?
At its typical summer peak of about 82°F, Lake Nehai Tonkayea 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 Nehai Tonkayea 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 — 19 readings from 1 monitoring station between 2015 and 2023. 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.