Lake Gilmer — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lake Gilmer, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lake Gilmer today is 27.2°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
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| SEP 14 | 27.0°C | 29.0°C | |
| SEP 15 | 26.7°C | 29.0°C | |
| SEP 16 | 26.6°C | 29.0°C | |
| SEP 17 | 26.6°C | 29.0°C | |
| SEP 18 | 26.8°C | 29.0°C | |
| SEP 19 | 26.6°C | 29.0°C | |
| SEP 20 | 26.8°C | 29.0°C | |
| SEP 21 | 27.2°C | 29.0°C | |
| SEP 22 | 29.0°C | 27.3°C | |
| SEP 23 | 29.0°C | 27.4°C | |
| SEP 24 | 29.0°C | 27.5°C | |
| SEP 25 | 29.0°C | 27.6°C | |
| SEP 26 | 29.0°C | 27.7°C | |
| SEP 27 | 29.0°C | 27.7°C | |
| SEP 28 | 29.0°C | 27.8°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 | 5°C | 9°C | 14°C |
| February | 5°C | 10°C | 15°C |
| March | 8°C | 14°C | 21°C |
| April | 12°C | 18°C | 25°C |
| May | 19°C | 23°C | 27°C |
| June | 23°C | 26°C | 29°C |
| July | 25°C | 30°C | 35°C |
| August | 26°C | 29°C | 33°C |
| September | 25°C | 29°C | 33°C |
| October | 22°C | 25°C | 27°C |
| November | 14°C | 18°C | 22°C |
| December | 8°C | 11°C | 15°C |
Lake Gilmer: Water Temperature by Location
Lake Gilmer: Weather Forecast
September 21
September 22
September 23
September 24
September 25
Location & Local Information
Lake Gilmer, an East Texas reservoir, experiences typical seasonal swings in surface water temperature driven by air temperature, depth and inflow. In summer the surface often warms into the mid-70s to low 90s °F (about 24–33 °C), with the warmest readings occurring in shallow coves on hot, calm days. Spring and fall are transitional, with surface temperatures generally in the 60s to mid-70s °F (roughly 16–24 °C), while winter commonly brings cooler conditions with surface waters ranging from the mid-40s to mid-50s °F (about 7–13 °C), occasionally dipping lower during cold snaps. Deeper areas remain cooler year-round and stratification can produce noticeable thermoclines in warmer months, so actual swim temperatures depend on location and depth.
Swimming at Lake Gilmer is allowed in recreational areas but may be limited or discouraged in certain zones because the lake is a managed reservoir where water quality, boating traffic and safety are concerns. Lifeguards are not typically provided, underwater hazards and changing temperatures can pose risks, and local rules or seasonal advisories may restrict swimming to protect drinking-water sources or reduce conflict with boaters. Visitors should observe posted signage, follow city or park guidelines and consider the seasonal temperature ranges when planning swims for comfort and safety.