Prospect Park Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Prospect Park Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Prospect Park Lake today is 71°F.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 68°F (20°C) to 74°F (23°C). The water is warm and pleasant for swimming, and in this range, one can stay in the water for extended periods without the risk of hypothermia. This is the ideal temperature for relaxation, swimming, and water sports. Families with children, as well as outdoor enthusiasts, will enjoy swimming and time spent in the water. For most people, this is the optimal temperature for a comfortable beach experience. 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 |
|---|---|---|---|
| JUL 3 | 77°F | 79°F | |
| JUL 4 | 77°F | 79°F | |
| JUL 5 | 80°F | 79°F | |
| JUL 6 | 73°F | 79°F | |
| JUL 7 | 72°F | 79°F | |
| JUL 8 | 72°F | 79°F | |
| JUL 9 | 71°F | 79°F | |
| JUL 10 | 71°F | 79°F | |
| JUL 11 | 79°F | 71°F | |
| JUL 12 | 79°F | 72°F | |
| JUL 13 | 79°F | 72°F | |
| JUL 14 | 79°F | 72°F | |
| JUL 15 | 79°F | 73°F | |
| JUL 16 | 79°F | 73°F | |
| JUL 17 | 79°F | 74°F |
* 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 | 32°F | 36°F | 41°F |
| February | 32°F | 34°F | 39°F |
| March | 32°F | 40°F | 48°F |
| April | 39°F | 52°F | 64°F |
| May | 52°F | 63°F | 73°F |
| June | 63°F | 70°F | 79°F |
| July | 70°F | 79°F | 86°F |
| August | 73°F | 79°F | 84°F |
| September | 68°F | 74°F | 81°F |
| October | 55°F | 62°F | 68°F |
| November | 45°F | 51°F | 55°F |
| December | 34°F | 40°F | 46°F |
Prospect Park Lake: Water Temperature by Location
Prospect Park Lake: Weather Forecast
July 11
July 12
July 13
July 14
Location & Local Information
Prospect Park Lake in Brooklyn experiences a typical temperate-seasonal pattern in surface water temperature. In winter the lake often approaches freezing, roughly 32–40°F (0–4°C), and in cold spells thin ice can form though it is not reliably safe. Spring sees a gradual rise, roughly 40–60°F (4–15°C) as air temperatures warm and runoff mixes into the basin. Peak summer temperatures commonly range from about 68–78°F (20–26°C) on warm days; in late July and August surface readings can sometimes edge toward the upper end of that band. During autumn the lake cools again, generally moving through 50–65°F (10–18°C) before winter settles in. These values are approximate and can vary with weather, shading, depth, and storm inflows.
Swimming in Prospect Park Lake is not permitted. The New York City Parks Department prohibits bathing in the lake because of public-safety and water-quality concerns: there are no lifeguards, boat traffic and submerged hazards present risks, and nutrient or runoff-driven water quality issues can create unsafe conditions. Park rules and signage reflect this restriction, and visitors are expected to use designated public pools and supervised waterfronts for swimming rather than entering the lake.