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Big Spirit Lake — Current Water Temperature, Annual Trends and Forecast

This page provides information on the current water temperature in Big Spirit Lake, trends, monthly ranges and the forecast for the coming days.

West Lake Okoboji, United States
West Lake Okoboji, United States © By Jeff Wilson, CC BY 2.0

Current Water Temperature

26.8°C
Today
26.4°C
Yesterday
27.2°C
A Week Ago
Get instant access to real-time water temperatures for this and all other locations with our iOS and Android apps.

Water Temperature in Big Spirit Lake today is 26.8°C.

Water Temperature: Daily Trends, Historical Records, and Forecast

✅ As of today, the minimum water temperature ranges from 79°F (26°C) to 82°F (28°C). This is very warm water, allowing for extended stays without any discomfort. Swimming in these conditions will be particularly enjoyable, making it the ideal temperature range for those who want to relax in the sea. Additionally, water in this temperature range is suitable for children and elderly people, as it is comfortable for prolonged stays. It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.

Water Temperature Chart Over the Last 30 Days

From July 11 to August 11

Table of Daily Sea Temperature Data

Date Current Average Forecast
AUG 427.2°C25.0°C
AUG 527.0°C25.0°C
AUG 626.6°C25.0°C
AUG 726.3°C25.0°C
AUG 826.2°C25.0°C
AUG 926.3°C25.0°C
AUG 1026.4°C25.0°C
AUG 1126.5°C25.0°C
AUG 1225.0°C26.7°C
AUG 1325.0°C26.6°C
AUG 1425.0°C26.5°C
AUG 1525.0°C26.4°C
AUG 1625.0°C26.4°C
AUG 1725.0°C26.3°C
AUG 1825.0°C26.2°C

* Current - Actual water temperature value

** Average - Average water temperature on this day in recent years

*** Forecast - Our water temperature forecast

Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.

Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts to enhance accuracy.

Monthly Water Temperature Range (Min, Max & Average)

Month Min Avg Max
January2°C7°C12°C
February3°C9°C15°C
March3°C10°C17°C
April5°C13°C20°C
May11°C16°C21°C
June15°C19°C22°C
July17°C22°C28°C
August22°C25°C28°C
September18°C20°C22°C
October5°C13°C20°C
November4°C7°C10°C
December3°C7°C11°C

Big Spirit Lake: Water Temperature by Location

Big Spirit Lake: Weather Forecast

August 12

° / °
violent rain showers
rain: 18% | wind:

August 13

° / °
slight rain showers
rain: 44% | wind:

August 14

° / °
light drizzle
rain: 34% | wind:

August 15

° / °
moderate drizzle
rain: 49% | wind:

August 16

° / °
overcast
rain: 22% | wind:

Location & Local Information

Big Spirit Lake experiences a wide seasonal swing in water temperature. In winter the lake typically sits at or just above freezing, about 32°F (0°C), and often develops ice cover. During spring the surface warms into the 40s–60s °F (4–16°C) as air temperatures rise and snowmelt feeds the basin. Peak summer surface temperatures commonly range from the low 70s to around 80°F (21–27°C), with occasional warm spells pushing the surface into the low 80s (27–28°C) on hot, calm days. As autumn advances the water cools back through the 50s–60s °F (10–16°C) before refreezing in winter.

Swimming in Big Spirit Lake is generally permitted at designated beaches and public access points, and many visitors swim during the summer when surface temperatures are most comfortable. Local authorities monitor water quality and may post advisories or close beaches temporarily for elevated bacteria or harmful algal blooms, so swimmers should heed posted warnings. Cold water in spring and late fall can cause cold-shock and increases hypothermia risk, making it uncomfortable and unsafe for extended swims until temperatures rise. Lifeguard presence and specific rules vary by site, so checking local beach information before entering the water is recommended.

Nearby Lakes

Frequently Asked Questions

What is the current water temperature in Big Spirit Lake?
Water Temperature in Big Spirit Lake today is 26.8°C.
What is the water temperature in Big Spirit Lake during the summer months?
The water temperature in Big Spirit Lake in summer fluctuates in the range of 15°C - 28°C.
Is it possible to swim in Big Spirit Lake and what are the possibilities for this?
Yes, it's possible to swim in Spirit Lake, Iowa. The possibilities include public beaches, boat rental services, and numerous recreational water activities.