Lums Pond — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lums Pond, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lums Pond today is 18.8°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 65°F (18°C) to 68°F (20°C). This is already quite warm water, which is ideal for most people. Swimming becomes comfortable, and prolonged stays in the water do not cause discomfort. This temperature is perfect for family trips and for those who prefer warmer water. It is also comfortable for water sports such as surfing or swimming. 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 |
|---|---|---|---|
| OCT 5 | 21.3°C | 17.0°C | |
| OCT 6 | 20.0°C | 17.0°C | |
| OCT 7 | 20.8°C | 17.0°C | |
| OCT 8 | 19.6°C | 17.0°C | |
| OCT 9 | 18.9°C | 17.0°C | |
| OCT 10 | 19.3°C | 17.0°C | |
| OCT 11 | 19.2°C | 17.0°C | |
| OCT 12 | 19.1°C | 17.0°C | |
| OCT 13 | 17.0°C | 18.7°C | |
| OCT 14 | 17.0°C | 18.6°C | |
| OCT 15 | 17.0°C | 18.5°C | |
| OCT 16 | 17.0°C | 18.4°C | |
| OCT 17 | 17.0°C | 18.4°C | |
| OCT 18 | 17.0°C | 18.3°C | |
| OCT 19 | 17.0°C | 18.2°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 | 4°C | 7°C |
| February | 0°C | 4°C | 7°C |
| March | 1°C | 6°C | 11°C |
| April | 10°C | 15°C | 20°C |
| May | 14°C | 19°C | 24°C |
| June | 19°C | 25°C | 30°C |
| July | 22°C | 28°C | 33°C |
| August | 25°C | 28°C | 31°C |
| September | 20°C | 24°C | 27°C |
| October | 12°C | 17°C | 22°C |
| November | 5°C | 9°C | 13°C |
| December | 3°C | 5°C | 8°C |
Lums Pond: Water Temperature by Location
Lums Pond: Weather Forecast
October 13
October 14
October 15
October 16
October 17
Location & Local Information
Lums Pond is Delaware’s largest freshwater pond and its surface temperature follows the region’s seasonal cycle. In summer, surface water typically warms to roughly 70–85°F (21–29°C), with shallow bays sometimes reaching the upper end of that range on hot, calm days. Spring temperatures often run from about 40–60°F (4–16°C) as the pond slowly warms after thaw, while autumn sees a gradual decline back toward 50–70°F (10–21°C). In winter the pond can approach freezing at the surface, commonly around 32–40°F (0–4°C), especially after prolonged cold spells. Actual temperatures vary by depth, wind, cloud cover and recent weather; shallow areas heat and cool faster than deeper channels.
Swimming at Lums Pond is not offered as a lifeguarded, designated beach and is generally not permitted or is strongly discouraged under park rules. The main reasons are public-safety concerns: there are no staffed swim patrols, water quality and clarity can be variable, submerged vegetation and drop-offs create hazards, and the pond is used extensively for boating and fishing. Visitors seeking water recreation are encouraged to use non‑swimming activities such as paddling, fishing or permitted boating where park rules and safety equipment apply.