Passaic River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Passaic River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Passaic River today is 59°F.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 54°F (12°C) to 60°F (15°C). The water is significantly warmer, and swimming becomes possible for most people. However, caution may still be required for prolonged stays in the water, as extended exposure can cause discomfort. This is a suitable temperature range for short swims and for those accustomed to cooler water. For more comfortable swimming, it is recommended to use proper gear. 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 |
|---|---|---|---|
| MAY 10 | 59°F | 56°F | |
| MAY 11 | 59°F | 56°F | |
| MAY 12 | 58°F | 56°F | |
| MAY 13 | 58°F | 56°F | |
| MAY 14 | 58°F | 56°F | |
| MAY 15 | 58°F | 56°F | |
| MAY 16 | 58°F | 56°F | |
| MAY 17 | 59°F | 56°F | |
| MAY 18 | 56°F | 59°F | |
| MAY 19 | 56°F | 59°F | |
| MAY 20 | 56°F | 59°F | |
| MAY 21 | 56°F | 58°F | |
| MAY 22 | 56°F | 58°F | |
| MAY 23 | 56°F | 58°F | |
| MAY 24 | 56°F | 58°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 | 41°F | 48°F |
| February | 32°F | 41°F | 48°F |
| March | 34°F | 43°F | 52°F |
| April | 41°F | 53°F | 64°F |
| May | 46°F | 56°F | 70°F |
| June | 57°F | 65°F | 72°F |
| July | 63°F | 70°F | 77°F |
| August | 63°F | 72°F | 81°F |
| September | 52°F | 63°F | 73°F |
| October | 46°F | 59°F | 72°F |
| November | 37°F | 47°F | 61°F |
| December | 34°F | 41°F | 46°F |
Passaic River: Water Temperature by Location
Passaic River: Weather Forecast
May 18
May 19
May 20
May 21
May 22
Location & Local Information
Source Unknown Pond
• location: Mendham
• elevation 540 ft (160 m)
Mouth Newark Bay
• location Newark
• elevation 0 ft (0 m)
Length 80 mi (130 km)
The Passaic River, flowing through northern New Jersey, is a significant waterway with a history deeply tied to the region’s industrial development. Water temperatures in the Passaic River vary throughout the year, typically ranging from the mid-30s°F (around 1-3°C) in the winter to the 70s°F (21-25°C) during the summer. However, due to its urban surroundings, water conditions can be influenced by runoff and other environmental factors.
Swimming in the Passaic River is generally not recommended, primarily due to water quality concerns stemming from industrial pollution and contamination over decades. Efforts are ongoing to clean and restore parts of the river, but it is still more suited for activities such as boating, kayaking, and fishing in specific areas where conditions are safe. The river holds scenic spots, particularly away from densely urbanized zones, offering opportunities to enjoy its natural beauty from the shore or by watercraft rather than direct water immersion.