Christiana Lake Central Basin; Ontwa Township Water Temperature
Christiana Lake Central Basin; Ontwa Township in Cass County, Michigan averages about 66°F at the surface in summer — warmest in Aug (~68°F) and coldest in May (~57°F). These are typical values by month, not a live reading.
Typical water temperature by month
Typical surface water temperature by month, from 502 field readings (2012–2022) via the EPA Water Quality Portal. Months with too few readings are left blank.
Is Christiana Lake Central Basin; Ontwa Township warm enough to swim?
Brisk but swimmable for short dips — most people acclimate after the first few minutes.
Want more than temperature? Christiana Lake Central Basin; Ontwa Township scored B on water quality — clarity, algae, phosphorus, depth, fish species, and swimming safety, all on one report card.
Water temperatures at nearby Michigan lakes
Summer average ~66°F
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Frequently asked questions
What is the water temperature of Christiana Lake Central Basin; Ontwa Township?
Christiana Lake Central Basin; Ontwa Township has a typical summer surface temperature of about 66°F. It is usually warmest in August (around 68°F) and coldest in May (around 57°F). These are typical values by month from 502 EPA Water Quality Portal field readings (2012–2022), not a live reading.
When is Christiana Lake Central Basin; Ontwa Township warmest?
Surface water at Christiana Lake Central Basin; Ontwa Township is typically warmest in August, reaching about 68°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 Christiana Lake Central Basin; Ontwa Township warm enough to swim?
At its typical summer peak of about 66°F, Christiana Lake Central Basin; Ontwa Township rates as "cool" for swimming. Brisk but swimmable for short dips — most people acclimate after the first few minutes.
Where does this Christiana Lake Central Basin; Ontwa Township 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 — 502 readings from 1 monitoring station between 2012 and 2022. 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.