Penobscot River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Penobscot River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Penobscot River today is 21.1°C.
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 |
|---|---|---|---|
| AUG 26 | 21.7°C | 20.5°C | |
| AUG 27 | 21.3°C | 20.5°C | |
| AUG 28 | 21.3°C | 20.5°C | |
| AUG 29 | 21.3°C | 20.5°C | |
| AUG 30 | 21.3°C | 20.5°C | |
| AUG 31 | 21.3°C | 20.5°C | |
| SEP 1 | 21.2°C | 17.0°C | |
| SEP 2 | 21.1°C | 17.0°C | |
| SEP 3 | 17.0°C | 20.9°C | |
| SEP 4 | 17.0°C | 20.7°C | |
| SEP 5 | 17.0°C | 20.5°C | |
| SEP 6 | 17.0°C | 20.3°C | |
| SEP 7 | 17.0°C | 20.1°C | |
| SEP 8 | 17.0°C | 19.9°C | |
| SEP 9 | 17.0°C | 19.7°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 | 2°C | 6°C | 9°C |
| February | 1°C | 5°C | 9°C |
| March | 1°C | 7°C | 11°C |
| April | 1°C | 9°C | 16°C |
| May | 5°C | 13°C | 21°C |
| June | 9°C | 16°C | 22°C |
| July | 15°C | 20°C | 24°C |
| August | 17°C | 21°C | 24°C |
| September | 11°C | 17°C | 23°C |
| October | 8°C | 13°C | 18°C |
| November | 3°C | 8°C | 16°C |
| December | 2°C | 5°C | 8°C |
Penobscot River: Water Temperature by Location
Penobscot River: Weather Forecast
September 3
September 4
September 5
September 6
Location & Local Information
Source:
• location Maine
Mouth:
• location Penobscot Bay
• elevation sea level
Length 109 miles (175 km)
The Penobscot River, located in the state of Maine, is a significant waterway that offers a variety of recreational opportunities, including swimming. During the summer months, the water temperature in the Penobscot River typically ranges between 60°F and 75°F (15°C to 24°C), which is relatively cool but comfortable for swimming, especially on warmer days. The river's temperature can be quite refreshing, particularly in the hotter months, though it can vary depending on weather conditions and the specific section of the river. In the spring and fall, the water tends to be cooler, making swimming less appealing for some, but still possible for those who enjoy a brisk dip.
While the Penobscot River is not widely known for swimming as a primary activity, certain sections offer calm and shallow areas ideal for a peaceful swim. Many locals and visitors enjoy the river for kayaking, canoeing, and fishing, with occasional opportunities for swimming in spots where the flow is gentler. Popular areas for swimming include some of the smaller tributaries and beaches along the riverbanks. As always, it's important to be aware of the currents and water depth, especially in the deeper, faster-moving parts of the river. In general, the Penobscot offers a serene environment for those seeking to cool off in the water, especially in scenic and more secluded areas.