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Sea Temperature in Shannon in September
Complete information on the sea temperature range in the Celtic Sea in Shannon in September. Historical daily data. Climate details for September. Tips on swimming conditions and beach relaxation in Shannon. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.
Water Temperature Range in Shannon in September
13°C
MINIMUN
15.5°C
AVERAGE
18°C
MAXIMUM
Historical Data of Water Temperature in September in Shannon
Water Temperature Chart for Celtic Sea in Shannon in September
Sea Temperature Table in Shannon in September Over the Past Years
| Day | 2024 | 2023 | 2022 | Average |
|---|---|---|---|---|
| Sep 1 | 16°C | 15°C | 16°C | 15.5°C |
| Sep 2 | 17°C | 15°C | 16°C | 15.8°C |
| Sep 3 | 16°C | 15°C | 16°C | 15.5°C |
| Sep 4 | 17°C | 14°C | 15°C | 15.3°C |
| Sep 5 | 16°C | 15°C | 15°C | 15.0°C |
| Sep 6 | 16°C | 15°C | 16°C | 15.5°C |
| Sep 7 | 17°C | 14°C | 16°C | 15.3°C |
| Sep 8 | 17°C | 14°C | 15°C | 15.0°C |
| Sep 9 | 17°C | 14°C | 16°C | 15.5°C |
| Sep 10 | 16°C | 15°C | 16°C | 15.3°C |
| Sep 11 | 16°C | 15°C | 15°C | 15.3°C |
| Sep 12 | 16°C | 14°C | 15°C | 15.0°C |
| Sep 13 | 16°C | 14°C | 15°C | 14.8°C |
| Sep 14 | 15°C | 14°C | 15°C | 14.5°C |
| Sep 15 | 16°C | 14°C | 15°C | 14.8°C |
| Sep 16 | 16°C | 14°C | 14°C | 14.5°C |
| Sep 17 | 15°C | 14°C | 15°C | 14.5°C |
| Sep 18 | 16°C | 14°C | 14°C | 14.8°C |
| Sep 19 | 15°C | 14°C | 14°C | 14.3°C |
| Sep 20 | 16°C | 15°C | 14°C | 14.8°C |
| Sep 21 | 15°C | 15°C | 14°C | 14.5°C |
| Sep 22 | 15°C | 15°C | 14°C | 14.5°C |
| Sep 23 | 15°C | 15°C | 14°C | 14.8°C |
| Sep 24 | 15°C | 15°C | 14°C | 14.8°C |
| Sep 25 | 15°C | 14°C | 14°C | 14.5°C |
| Sep 26 | 15°C | 14°C | 14°C | 14.5°C |
| Sep 27 | 15°C | 14°C | 14°C | 14.5°C |
| Sep 28 | 16°C | 14°C | 15°C | 14.8°C |
| Sep 29 | 15°C | 14°C | 14°C | 14.3°C |
Shannon Climate and Swimming Opportunities in September
17°C
Average Day Air Temperature
10°C
Average Night Air Temperature
85 mm
Precipitation Amount per Month
14 days
Number of Rainy Days
13 hrs
Daylight
per Day
4 hrs
Sunshine
per Day
14 km/h
Average Wind Speed
85%
Average
humidity
Shannon lies within the Munster in Ireland. The average daytime temperature in Shannon in September is 17°C (63°F), while the nighttime average is 10°C (50°F). There are typically 14 rainy days during the month, with a total precipitation of 85 mm (3.4 inches). The daylight duration in September in Shannon is 13 hours, with an average of 4 hours of sunshine per day. The average wind speed in September is 14 km/h (9 mph), and the humidity level is around 85%.
The water temperature in Shannon in September ranges from 14°C to 15°C (57°F to 59°F). At the beginning of the month, the average temperature is around 15°C (59°F), shifting to 15°C (59°F) by mid-September and reaching 15°C (59°F) in the last ten days. Overall, the average sea temperature in Shannon for September is 15°C (59°F). Ideal conditions for a refreshing swim, though some may still find it a bit cool.
Sea Temperature in September in Nearby Cities
Frequently Asked Questions About Water Temperatures in September in Shannon
What is the sea temperature in Shannon in September?
The water temperature in the Celtic Sea in Shannon in September ranges from 14°C to 15°C (57°F to 59°F).
Is it possible to swim in the Celtic Sea in Shannon in September?
The average sea temperature in Shannon in September is 15°C (59°F), and the air temperature is 17°C (63°F), so ideal conditions for a refreshing swim, though some may still find it a bit cool.