Bo'ness — Water Temperature in September

Water Temperature Range

11°C

minimum

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

September: Climate and Swimming Opportunities

Average Night Air Temperature

9°C

Average Day Air Temperature

16°C

Precipitation Amount per Month

99 mm

Number of Rainy Days

Daylight per Day

13 hrs

Sunshine per Day

4 hrs

Average Wind Speed

12 km/h

Average Humidity

85%

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.