Pike Lake Water Temperature
Pike Lake in Washington County, Wisconsin averages about 77°F at the surface in summer — warmest in Jul (~80°F) and coldest in Apr (~49°F). These are typical values by month, not a live reading.
Typical water temperature by month
Typical surface water temperature by month, from 35 field readings (2024–2025) via the EPA Water Quality Portal. Months with too few readings are left blank.
Is Pike Lake warm enough to swim?
Pleasant for swimming — the range most people find enjoyable without a wetsuit.
Want more than temperature? Pike Lake scored B on water quality — clarity, algae, phosphorus, depth, fish species, and swimming safety, all on one report card.
Water temperatures at nearby Wisconsin lakes
Explore water temperatures
Where to stay near Pike Lake
Planning a swim or lake trip? Compare cabins, lodges, and vacation rentals near Pike Lake — live availability and prices.
Top-rated places to stay near Pike Lake
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a trip to Pike Lake?
Get lake water-quality report cards plus the best cabin & lodging deals near Pike Lake — straight to your inbox. No spam, unsubscribe anytime.
Frequently asked questions
What is the water temperature of Pike Lake?
Pike Lake has a typical summer surface temperature of about 77°F. It is usually warmest in July (around 80°F) and coldest in April (around 49°F). These are typical values by month from 35 EPA Water Quality Portal field readings (2024–2025), not a live reading.
When is Pike Lake warmest?
Surface water at Pike Lake is typically warmest in July, reaching about 80°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 Pike Lake warm enough to swim?
At its typical summer peak of about 77°F, Pike Lake rates as "comfortable" for swimming. Pleasant for swimming — the range most people find enjoyable without a wetsuit.
Where does this Pike Lake 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 — 35 readings from 1 monitoring station between 2024 and 2025. 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.