Tremont — Water Temperature, Sea Conditions & Trends
This page provides clear and up-to-date information about water temperature for Tremont (Maine, United States). It includes the current water temperature, daily data for the last month presented in a simple chart, and a 7-day forecast. The page also compares today’s value with typical averages for this period, shows usual monthly ranges during the year, and lists nearby beaches with short descriptions. Local weather for the next few days and general details about Tremont help you plan your visit and choose the best time for swimming.
Current Water Temperature
Water temperature in Tremont in the Atlantic Ocean today is 16°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 60°F (15°C) to 65°F (18°C). The water is comfortable for most people, making it an ideal range for water sports enthusiasts. The temperature does not cause significant discomfort, and swimming will be pleasant for the majority. However, it's important to remember that prolonged exposure to the water can still lead to cooling, so it's essential to monitor the time spent in the water, especially for children or elderly people.
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
Water temperature in Tremont has risen over the last week and month. Currently, the sea water temperature at this location matches the average for this day in previous years.
According to our forecast, Water temperature in Tremont will be 14.8°C in the next 7 days. See the table below for daily data for the upcoming week.
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| AUG 4 | 14.0°C | 13.8°C | |
| AUG 5 | 14.3°C | 14.0°C | |
| AUG 6 | 14.5°C | 14.8°C | |
| AUG 7 | 14.4°C | 14.3°C | |
| AUG 8 | 15.3°C | 14.5°C | |
| AUG 9 | 16.0°C | 15.0°C | |
| AUG 10 | 15.7°C | 14.5°C | |
| AUG 11 | 15.5°C | 14.8°C | |
| AUG 12 | 15.9°C | 15.0°C | 15.9°C |
| AUG 13 | 14.5°C | 15.7°C | |
| AUG 14 | 14.8°C | 15.6°C | |
| AUG 15 | 15.0°C | 15.4°C | |
| AUG 16 | 14.8°C | 15.3°C | |
| AUG 17 | 14.8°C | 15.1°C | |
| AUG 18 | 14.3°C | 14.9°C | |
| AUG 19 | 14.0°C | 14.8°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.
Water temperature data for this location is gathered from various sources, including buoys and satellite sea and ocean surface maps provided by the NOAA agency. We also incorporate data from local authorities in each specific location worldwide to ensure more accurate temperature readings.
Annual Water Temperature Overview by Month
Monthly Water Temp Ranges
Annual Water Temperature Trend
Tremont, on the southwestern side of Mount Desert Island in Maine, is defined by a rocky Atlantic coastline, sheltered coves and small sandy pockets where ocean water temperatures are noticeably cool for much of the year. Typical seasonal surface temperatures along the coast there range from near freezing in winter, roughly 0–4°C, to spring values of about 2–8°C as the ocean slowly warms. By summer the Gulf of Maine can reach its warmest, with coastal water commonly in the 10–17°C range at peak season (usually July and August), though exposed headlands and deeper waters stay colder. In autumn temperatures fall again, generally cooling to about 6–12°C, and local conditions can vary by tidal stage, recent weather and the degree of shelter from open ocean currents.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 3°C | 6°C | 7°C |
| February | 2°C | 4°C | 6°C |
| March | 1°C | 3°C | 5°C |
| April | 3°C | 5°C | 7°C |
| May | 5°C | 8°C | 11°C |
| June | 7°C | 10°C | 13°C |
| July | 11°C | 12°C | 16°C |
| August | 12°C | 14°C | 17°C |
| September | 11°C | 14°C | 17°C |
| October | 8°C | 13°C | 15°C |
| November | 7°C | 11°C | 14°C |
| December | 5°C | 8°C | 11°C |
* Click on a month to view detailed water temperature data.
Tremont: Weather Forecast
August 14
August 15
August 16
August 17
Location, Beaches & Local Information
Nearby Beaches & Facilities
Cobble Beach
Whistler's Cove
Echo Lake Beach
Star Beach
Barley Beach
Seal Harbor Beach
Swimming Conditions
Swimming opportunities in Tremont are therefore seasonal and often brisk compared with more southerly beaches. The warmest and most comfortable window for most swimmers is the short mid-summer period; even then many visitors prefer shallow, sunlit coves that warm a degree or two above open-water temperatures. For longer swims or for those sensitive to cold, wetsuits are common and sensible, and tide and current awareness is important because of the rocky shoreline and strong tidal flows. Tremont’s scenery, tide pools, and calm bays also suit paddling, shoreline wading and supervised beach outings, making it a rewarding seaside destination for visitors who expect cooler water and plan accordingly.