Raritan River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Raritan River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Raritan River today is 56°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 |
|---|---|---|---|
| APR 9 | 51°F | 53°F | |
| APR 10 | 47°F | 53°F | |
| APR 11 | 47°F | 53°F | |
| APR 12 | 47°F | 53°F | |
| APR 13 | 51°F | 53°F | |
| APR 14 | 51°F | 53°F | |
| APR 15 | 53°F | 53°F | |
| APR 16 | 53°F | 53°F | |
| APR 17 | 53°F | 56°F | |
| APR 18 | 53°F | 56°F | |
| APR 19 | 53°F | 56°F | |
| APR 20 | 53°F | 55°F | |
| APR 21 | 53°F | 55°F | |
| APR 22 | 53°F | 55°F | |
| APR 23 | 53°F | 55°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 | 68°F | 75°F |
| August | 63°F | 70°F | 77°F |
| September | 52°F | 62°F | 72°F |
| October | 46°F | 57°F | 68°F |
| November | 37°F | 47°F | 61°F |
| December | 34°F | 41°F | 46°F |
Raritan River: Water Temperature by Location
Raritan River: Weather Forecast
April 17
April 18
April 19
April 20
April 21
April 22
Location & Local Information
Source:
• location Confluence of South Branch Raritan River and North Branch Raritan River
• elevation 47.7 ft (14.5 m)
Mouth:
• location Raritan Bay
Length 69.6 mi (112.0 km)
The Raritan River, located in New Jersey, offers a mix of swimming opportunities and challenges depending on the time of year and the water conditions. During the warmer months, typically from late spring to early fall, the river's water temperature can rise to more comfortable levels for swimming, ranging from 70°F to 80°F (21°C to 27°C). However, the river's water temperature can be highly influenced by rainfall and seasonal changes, with colder temperatures in the early spring and fall, often dipping below 60°F (15°C), making it less ideal for swimming without proper protection.
While swimming is possible in the Raritan River, it is important to note that the river is not as widely used for recreational swimming compared to some other rivers or beaches in the region. The current can be swift in some parts, and water quality can vary, especially following storms or in areas near urban centers. Despite this, there are several parks and natural areas along the river where people enjoy boating, kayaking, and fishing. The river's proximity to populated areas means that certain sections may have limited access for swimming, but it remains a popular destination for other water activities. Always check the water conditions and be cautious of potential pollution in urban sections of the river when considering swimming.