Eastport — Water Temperature in September

Water Temperature Range

11°C

minimum

13°C

average

15°C

maximum

Get instant access to real-time water temperatures for this and all other locations with our iOS and Android apps.

Water Temperature Chart for Month

The chart shows the average daily water temperature for each day of the month based on historical data.

Table of Water Temperatures by Day of the Month for Previous Years

Day	2026	2025	2024	2023
SEP 1	-	13°C	12°C	14°C
SEP 2	14°C	13°C	12°C	14°C
SEP 3	14°C	13°C	12°C	14°C
SEP 4	14°C	13°C	12°C	13°C
SEP 5	13°C	13°C	12°C	13°C
SEP 6	13°C	13°C	13°C	13°C
SEP 7	13°C	13°C	13°C	13°C
SEP 8	13°C	13°C	13°C	13°C
SEP 9	13°C	13°C	12°C	13°C
SEP 10	13°C	13°C	13°C	13°C
SEP 11	13°C	13°C	12°C	13°C
SEP 12	17°C	13°C	12°C	13°C
SEP 13	17°C	13°C	12°C	13°C
SEP 14	17°C	13°C	12°C	13°C
SEP 15	18°C	13°C	12°C	13°C
SEP 16	17°C	13°C	12°C	13°C
SEP 17	17°C	13°C	12°C	13°C
SEP 18	18°C	13°C	12°C	13°C
SEP 19	17°C	13°C	13°C	13°C
SEP 20	17°C	13°C	13°C	13°C
SEP 21	17°C	13°C	13°C	13°C
SEP 22	17°C	13°C	12°C	13°C
SEP 23	17°C	13°C	12°C	13°C
SEP 24	17°C	13°C	12°C	13°C
SEP 25	17°C	13°C	12°C	13°C
SEP 26	16°C	13°C	12°C	13°C
SEP 27	16°C	13°C	12°C	13°C
SEP 28	-	13°C	13°C	13°C
SEP 29	-	13°C	12°C	13°C
SEP 30	-	13°C	13°C	13°C

September: Climate and Swimming Opportunities

Average Night Air Temperature

9°C

Average Day Air Temperature

16°C

Precipitation Amount per Month

78 mm

Number of Rainy Days

Daylight per Day

13 hrs

Sunshine per Day

4 hrs

Average Wind Speed

18 km/h

Average Humidity

88%

With such a ratio between the average monthly temperatures of water and air, swimming feels very cold and is only for cold-water enthusiasts. Most people will prefer just a brief splash, because warming up afterward can take time.