Iowa City — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Iowa City, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Iowa City today is 25.6°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 75°F (23°C) to 79°F (26°C). This is a very comfortable temperature for swimming, and many people can enjoy prolonged stays in the water without feeling cold. The water is pleasantly warm, making it ideal for relaxation and water sports. This temperature range is particularly popular among tourists, as it combines comfort and safety for health. 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
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| AUG 4 | 24.8°C | 21.4°C | |
| AUG 5 | 24.2°C | 21.4°C | |
| AUG 6 | 24.1°C | 21.4°C | |
| AUG 7 | 24.4°C | 21.4°C | |
| AUG 8 | 24.8°C | 21.4°C | |
| AUG 9 | 25.1°C | 21.4°C | |
| AUG 10 | 25.1°C | 21.4°C | |
| AUG 11 | 25.3°C | 21.4°C | |
| AUG 12 | 21.4°C | 25.4°C | |
| AUG 13 | 21.4°C | 25.2°C | |
| AUG 14 | 21.4°C | 25.0°C | |
| AUG 15 | 21.4°C | 24.8°C | |
| AUG 16 | 21.4°C | 24.6°C | |
| AUG 17 | 21.4°C | 24.3°C | |
| AUG 18 | 21.4°C | 24.1°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 |
|---|---|---|---|
| January | 1°C | 5°C | 9°C |
| February | 1°C | 5°C | 9°C |
| March | 2°C | 7°C | 11°C |
| April | 5°C | 10°C | 16°C |
| May | 8°C | 15°C | 22°C |
| June | 14°C | 19°C | 24°C |
| July | 17°C | 23°C | 28°C |
| August | 17°C | 21°C | 26°C |
| September | 11°C | 17°C | 22°C |
| October | 8°C | 15°C | 22°C |
| November | 3°C | 10°C | 17°C |
| December | 2°C | 5°C | 8°C |
Iowa City: Weather Forecast
August 12
August 13
August 14
August 15
Location & Local Information
In Iowa City, Iowa, the Iowa River runs through the heart of the city, offering some opportunities for water-based activities. However, similar to other rivers in the area, swimming in the Iowa River is generally not recommended due to strong currents and water quality concerns. During the summer months, the river's water temperature can rise to around 70°F to 80°F (21°C to 27°C), which might seem inviting, but the water quality often fluctuates with rainfall and runoff from surrounding areas, affecting its safety for recreational swimming.
The Iowa River's flow can be swift, especially after storms or during spring runoff, making swimming dangerous in many areas. While there may be some calm spots where people might wade or cool off, the current risks and water quality are significant concerns. Additionally, pollution, including bacteria from agricultural runoff, can compromise the water's cleanliness and make it unsafe for contact recreation.
Though the Iowa River might not be ideal for swimming, Iowa City offers alternative ways to enjoy water activities. Local parks, lakes, and swimming pools provide safer options for swimming, including the popular Coralville Lake located just outside of Iowa City, which is known for its designated swimming areas. For those looking for a river experience, kayaking, canoeing, and fishing on the Iowa River are popular activities and can be enjoyed with proper safety precautions.