Montmagny — Water Temperature in October

Water Temperature Range

5°C

minimum

11°C

average

16°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
OCT 1	-10°C	16°C	14°C	15°C
OCT 2	15°C	13°C	14°C	15°C
OCT 3	14°C	12°C	13°C	14°C
OCT 4	14°C	12°C	12°C	14°C
OCT 5	14°C	12°C	12°C	14°C
OCT 6	14°C	12°C	12°C	14°C
OCT 7	14°C	13°C	13°C	15°C
OCT 8	14°C	13°C	13°C	14°C
OCT 9	14°C	12°C	12°C	14°C
OCT 10	13°C	12°C	11°C	13°C
OCT 11	14°C	12°C	12°C	13°C
OCT 12	13°C	12°C	12°C	13°C
OCT 13	13°C	12°C	12°C	14°C
OCT 14	12°C	12°C	11°C	14°C
OCT 15	12°C	11°C	10°C	13°C
OCT 16	12°C	12°C	11°C	14°C
OCT 17	11°C	11°C	11°C	13°C
OCT 18	11°C	11°C	11°C	13°C
OCT 19	10°C	11°C	11°C	13°C
OCT 20	10°C	11°C	11°C	12°C
OCT 21	10°C	10°C	9°C	12°C
OCT 22	10°C	10°C	10°C	11°C
OCT 23	10°C	10°C	9°C	12°C
OCT 24	9°C	10°C	9°C	12°C
OCT 25	10°C	10°C	9°C	11°C
OCT 26	10°C	10°C	9°C	11°C
OCT 27	9°C	10°C	9°C	11°C
OCT 28	10°C	10°C	9°C	11°C
OCT 29	9°C	10°C	9°C	11°C
OCT 30	9°C	10°C	9°C	11°C
OCT 31	8°C	9°C	8°C	11°C

October: Climate and Swimming Opportunities

Average Night Air Temperature

24°C

Average Day Air Temperature

31°C

Precipitation Amount per Month

160 mm

Number of Rainy Days

Daylight per Day

12 hrs

Sunshine per Day

7 hrs

Average Wind Speed

12 km/h

Average Humidity

82%

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.