Sea Temperature in Donegal in September

Complete information on the sea temperature range in the Atlantic Ocean in Donegal in September. Historical daily data. Climate details for September. Tips on swimming conditions and beach relaxation in Donegal. 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 Donegal in September

55°F

MINIMUN

59°F

AVERAGE

63°F

MAXIMUM

Historical Data of Water Temperature in September in Donegal

Water Temperature Chart for Atlantic Ocean in Donegal in September

Sea Temperature Table in Donegal in September Over the Past Years

Day	2024	2023	2022	Average
Sep 1	61°C	59°C	59°C	59°C
Sep 2	63°C	59°C	55°C	59°C
Sep 3	61°C	57°C	55°C	58°C
Sep 4	61°C	57°C	55°C	58°C
Sep 5	63°C	59°C	55°C	59°C
Sep 6	61°C	59°C	55°C	58°C
Sep 7	61°C	57°C	61°C	59°C
Sep 8	61°C	57°C	59°C	59°C
Sep 9	61°C	59°C	57°C	59°C
Sep 10	61°C	59°C	55°C	59°C
Sep 11	61°C	57°C	59°C	59°C
Sep 12	61°C	59°C	61°C	60°C
Sep 13	61°C	57°C	59°C	59°C
Sep 14	61°C	57°C	57°C	58°C
Sep 15	61°C	59°C	61°C	60°C
Sep 16	59°C	59°C	61°C	59°C
Sep 17	61°C	59°C	59°C	59°C
Sep 18	61°C	59°C	57°C	59°C
Sep 19	59°C	59°C	61°C	59°C
Sep 20	61°C	57°C	61°C	60°C
Sep 21	61°C	59°C	61°C	60°C
Sep 22	61°C	59°C	61°C	60°C
Sep 23	61°C	59°C	57°C	59°C
Sep 24	59°C	59°C	61°C	60°C
Sep 25	59°C	57°C	61°C	59°C
Sep 26	61°C	57°C	59°C	59°C
Sep 27	59°C	57°C	59°C	58°C
Sep 28	59°C	57°C	55°C	57°C
Sep 29	59°C	57°C	59°C	58°C

Donegal Climate and Swimming Opportunities in September

61°F

Average Day Air Temperature

50°F

Average Night Air Temperature

4 in

Precipitation Amount per Month

16 days

Number of Rainy Days

13 hrs

Daylight
per Day

3 hrs

Sunshine
per Day

10 mph

Average Wind Speed

89%

Average
humidity

Donegal lies within the Ulster in Ireland. The average daytime temperature in Donegal in September is 16°C (61°F), while the nighttime average is 10°C (50°F). There are typically 16 rainy days during the month, with a total precipitation of 97 mm (3.8 inches). The daylight duration in September in Donegal is 13 hours, with an average of 3 hours of sunshine per day. The average wind speed in September is 17 km/h (11 mph), and the humidity level is around 89%.

The water temperature in Donegal 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 Donegal 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 Donegal

What is the sea temperature in Donegal in September?

The water temperature in the Atlantic Ocean in Donegal in September ranges from 14°C to 15°C (57°F to 59°F).

Is it possible to swim in the Atlantic Ocean in Donegal in September?

The average sea temperature in Donegal in September is 15°C (59°F), and the air temperature is 16°C (61°F), so ideal conditions for a refreshing swim, though some may still find it a bit cool.