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Saint John River
Saint John River Current Water Temperature and Forecast
On this page, you will find comprehensive information about the water temperature in Saint John River, including current readings, historical data and trends, monthly averages, as well as weather forecasts and upcoming temperature predictions. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.
Current Water Temperature in Saint John River
38°F
TODAY
38°F
YESTERDAY
38°F
A WEEK AGO
As of today, the minimum water temperature in the Saint John River ranges less than 41°F (5°C). Such water is extremely cold and not recommended for swimming without proper preparation. In these conditions, the risk of hypothermia is very high, and prolonged exposure to the water can be hazardous to your health. If you decide to swim, it is important to have the appropriate gear, such as a wetsuit. Typically, only experienced swimmers or those who practice winter swimming venture into such waters.
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.
Analysis, Historical Data, and Forecast of Water Temperature
Water Temperature Chart for Saint John River Over the Last 30 Days
Today the water temperature in Saint John River is lower than the same day in previous years. The water temperature range here in March is from 37°F to 52°F. Water temperatures have risen over the past 7 days but dropped over the past month.
The forecasted water temperature values for Saint John River are presented in the table below.
The actual water temperature values near the shore may differ by a few degrees from the stated values. For the development of the forecast, we use our own mathematical model that takes into account the current water temperature changes, historical data, and key weather trends, including wind strength and direction, and air temperature in each specific region.
Daily Water Temperature Chart
| Date | Current | Average | Forecast |
|---|---|---|---|
| Mar 20 | 38°F | 44°F | |
| Mar 21 | 38°F | 44°F | |
| Mar 22 | 43°F | 44°F | |
| Mar 23 | 43°F | 44°F | |
| Mar 24 | 43°F | 44°F | |
| Mar 25 | 38°F | 44°F | |
| Mar 26 | 38°F | 44°F | |
| Mar 27 | 38°F | 44°F | |
| Mar 28 | 44°F | 38°F | |
| Mar 29 | 44°F | 38°F | |
| Mar 30 | 44°F | 39°F | |
| Mar 31 | 44°F | 39°F | |
| Apr 1 | 50°F | 40°F | |
| Apr 2 | 50°F | 40°F | |
| Apr 3 | 50°F | 41°F | |
| Apr 4 | 50°F | 42°F |
Water Temperature Ranges in Saint John River by Month
January
| Minimum | Average | Maximum |
|---|---|---|
| 36°F | 42°F | 48°F |
February
| Minimum | Average | Maximum |
|---|---|---|
| 36°F | 42°F | 48°F |
March
| Minimum | Average | Maximum |
|---|---|---|
| 37°F | 44°F | 52°F |
April
| Minimum | Average | Maximum |
|---|---|---|
| 41°F | 50°F | 61°F |
May
| Minimum | Average | Maximum |
|---|---|---|
| 46°F | 56°F | 70°F |
June
| Minimum | Average | Maximum |
|---|---|---|
| 57°F | 65°F | 72°F |
July
| Minimum | Average | Maximum |
|---|---|---|
| 63°F | 68°F | 75°F |
August
| Minimum | Average | Maximum |
|---|---|---|
| 63°F | 71°F | 73°F |
September
| Minimum | Average | Maximum |
|---|---|---|
| 52°F | 64°F | 66°F |
October
| Minimum | Average | Maximum |
|---|---|---|
| 46°F | 56°F | 61°F |
November
| Minimum | Average | Maximum |
|---|---|---|
| 37°F | 47°F | 61°F |
December
| Minimum | Average | Maximum |
|---|---|---|
| 37°F | 40°F | 46°F |
Monthly Water Temperature Histogram for Saint John River
Water Temperature in Cities and Towns on Saint John River
Saint John River Weather
MARCH 28
27°F / 41°F
slight snow fallrain: 27% | wind: 16 mph
MARCH 29
19°F / 34°F
slight snow fallrain: 27% | wind: 17 mph
MARCH 30
25°F / 36°F
slight snow fallrain: 37% | wind: 10 mph
MARCH 31
28°F / 36°F
moderate snow fallrain: 50% | wind: 14 mph
Water Temperature in Saint John River: General Trends and Swimming Opportunities
Source Saint John Ponds
• location Somerset County, Maine, United States
Mouth Bay of Fundy
• location Saint John, New Brunswick, Canada
Length 673 km (418 mi)
The Saint John River, flowing through both the United States and Canada, provides a beautiful and relatively tranquil setting for outdoor activities, including swimming. The water temperature in the river varies depending on the season and location, but in the warmer months of summer, it typically ranges between 60°F to 75°F (15°C to 24°C), offering comfortable swimming conditions. During the cooler months, the temperature can drop significantly, especially in the northern sections of the river near New Brunswick, making swimming less inviting.
Swimming opportunities along the Saint John River are available in various regions, particularly near cities like Fredericton and Saint John in Canada, as well as the areas closer to the U.S. border. In these places, locals and visitors alike enjoy the river's calm stretches, which make it suitable for swimming. While the water is generally clean and safe, swimmers should be cautious of the river's varying currents, especially near the dam areas and after heavy rainfall. Overall, the Saint John River, with its scenic views and moderate water temperatures during the summer, is a popular spot for swimming and other water-based activities, offering a peaceful experience in nature.
Geographical Location of Saint John River
Frequently Asked Questions About Saint John River and its Water Temperatures
What is the current water temperature in Saint John River?
The water temperature today in Saint John River ranges from 35°F (1.4°C) to 37°F (2.9°C).
What is the water temperature in Saint John River during the summer months?
The average water temperature in Saint John River during the summer months is typically between 65°F to 71°F (19°C to 21°C), and it can reach up to 75°F (24°C) at its warmest. However, in some years, the temperature may exceed this range.
What is the water temperature in Saint John River in May?
The average water temperature in Saint John River in May ranges from 46°F to 70°F (8°C to 21°C).
What is the water temperature in Saint John River in September?
The average water temperature in Saint John River in September is typically between 52°F to 66°F (11°C to 19°C).
Where does Saint John River flow?
Saint John River flows through United States (Maine), Canada (New Brunswick, Quebec).
Is it possible to swim in the Saint John River?
Yes, it is possible to swim in the Saint John River. However, it's essential to consider water safety rules and local guidelines regarding water quality and currents.
What major cities are located on Saint John River?
Cities along the course of Saint John River include Edmundston (New Brunswick), Fredericton (New Brunswick).