Rye Patch Reservoir — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Rye Patch Reservoir, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Rye Patch Reservoir today is 17.8°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 60°F (15°C) to 65°F (18°C). The water is comfortable for most people, making it an ideal range for water sports enthusiasts. The temperature does not cause significant discomfort, and swimming will be pleasant for the majority. However, it's important to remember that prolonged exposure to the water can still lead to cooling, so it's essential to monitor the time spent in the water, especially for children or elderly people. 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 |
|---|---|---|---|
| SEP 14 | 19.6°C | 21.7°C | |
| SEP 15 | 19.5°C | 21.7°C | |
| SEP 16 | 19.8°C | 21.7°C | |
| SEP 17 | 19.2°C | 21.7°C | |
| SEP 18 | 18.6°C | 21.7°C | |
| SEP 19 | 18.6°C | 21.7°C | |
| SEP 20 | 18.4°C | 21.7°C | |
| SEP 21 | 17.8°C | 21.7°C | |
| SEP 22 | 21.7°C | 18.0°C | |
| SEP 23 | 21.7°C | 18.2°C | |
| SEP 24 | 21.7°C | 18.4°C | |
| SEP 25 | 21.7°C | 18.6°C | |
| SEP 26 | 21.7°C | 18.8°C | |
| SEP 27 | 21.7°C | 19.0°C | |
| SEP 28 | 21.7°C | 19.2°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 |
|---|---|---|---|
| January | 0°C | 2°C | 5°C |
| February | 0°C | 3°C | 6°C |
| March | 0°C | 6°C | 13°C |
| April | 0°C | 7°C | 15°C |
| May | 11°C | 16°C | 22°C |
| June | 16°C | 20°C | 24°C |
| July | 20°C | 24°C | 29°C |
| August | 20°C | 24°C | 29°C |
| September | 18°C | 22°C | 26°C |
| October | 11°C | 16°C | 20°C |
| November | 5°C | 9°C | 13°C |
| December | 0°C | 4°C | 8°C |
Rye Patch Reservoir: Water Temperature by Location
Rye Patch Reservoir: Weather Forecast
September 22
September 23
September 24
September 25
September 26
Location & Local Information
Rye Patch Reservoir on the Humboldt River experiences wide seasonal swings in surface water temperature. In winter, surface temperatures commonly hover near freezing to the mid‑40s °F (about 1–7 °C). Spring warming typically brings surface readings into the mid‑40s to mid‑60s °F (7–18 °C). Peak summer surface temperatures often reach the low 70s to mid‑80s °F (around 21–29 °C) on warm, calm days, while autumn sees a decline back toward the 50s–70s °F range (10–21 °C). Temperatures vary with depth, inflow from the Humboldt River, wind and weather; deeper water and shaded areas remain much colder than the surface, and sudden cold layers can persist even in summer.
Swimming at Rye Patch is generally allowed as part of the Rye Patch State Recreation Area’s day‑use activities, and beaches and boat launches provide access. However, there are no widespread lifeguard services, water levels can drop or expose hazards, and boat traffic can create safety concerns. Cold shock from cooler water, submerged debris, and occasional water‑quality advisories are reasons to exercise caution. Visitors should check on local conditions, avoid alcohol, wear flotation as appropriate, and prefer warmer summer months for more comfortable and safer swimming.