Sea Temperature in Dun Laoghaire in July

Complete information on the sea temperature range in the Irish Sea in Dun Laoghaire in July. Historical daily data. Climate details for July. Tips on swimming conditions and beach relaxation in Dun Laoghaire. 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 Dun Laoghaire in July

54°F

MINIMUN

59°F

AVERAGE

64°F

MAXIMUM

Historical Data of Water Temperature in July in Dun Laoghaire

Water Temperature Chart for Irish Sea in Dun Laoghaire in July

Sea Temperature Table in Dun Laoghaire in July Over the Past Years

Day	2024	2023	2022	Average
Jul 1	57°C	55°C	59°C	57°C
Jul 2	57°C	55°C	57°C	57°C
Jul 3	55°C	55°C	57°C	56°C
Jul 4	57°C	57°C	59°C	58°C
Jul 5	59°C	55°C	61°C	58°C
Jul 6	57°C	55°C	59°C	57°C
Jul 7	57°C	57°C	63°C	59°C
Jul 8	59°C	55°C	59°C	58°C
Jul 9	59°C	55°C	59°C	57°C
Jul 10	59°C	57°C	59°C	58°C
Jul 11	59°C	55°C	57°C	57°C
Jul 12	61°C	57°C	57°C	58°C
Jul 13	59°C	57°C	63°C	59°C
Jul 14	61°C	57°C	59°C	59°C
Jul 15	61°C	59°C	57°C	59°C
Jul 16	61°C	57°C	55°C	58°C
Jul 17	61°C	57°C	59°C	59°C
Jul 18	61°C	57°C	57°C	59°C
Jul 19	61°C	57°C	59°C	59°C
Jul 20	61°C	57°C	61°C	60°C
Jul 21	63°C	57°C	63°C	60°C
Jul 22	63°C	57°C	57°C	59°C
Jul 23	63°C	57°C	59°C	59°C
Jul 24	61°C	57°C	55°C	58°C
Jul 25	61°C	57°C	59°C	59°C
Jul 26	63°C	57°C	59°C	60°C
Jul 27	61°C	57°C	61°C	60°C
Jul 28	61°C	57°C	59°C	59°C
Jul 29	63°C	57°C	55°C	59°C
Jul 30	63°C	57°C	59°C	60°C

Dun Laoghaire Climate and Swimming Opportunities in July

66°F

Average Day Air Temperature

54°F

Average Night Air Temperature

2 in

Precipitation Amount per Month

13 days

Number of Rainy Days

16 hrs

Daylight
per Day

5 hrs

Sunshine
per Day

9 mph

Average Wind Speed

79%

Average
humidity

Dun Laoghaire lies within the Leinster in Ireland. The average daytime temperature in Dun Laoghaire in July is 19°C (67°F), while the nighttime average is 12°C (53°F). There are typically 13 rainy days during the month, with a total precipitation of 57 mm (2.2 inches). The daylight duration in July in Dun Laoghaire is 16 hours, with an average of 5 hours of sunshine per day. The average wind speed in July is 15 km/h (9 mph), and the humidity level is around 79%.

The water temperature in Dun Laoghaire in July ranges from 13°C to 15°C (55°F to 59°F). At the beginning of the month, the average temperature is around 14°C (57°F), shifting to 14°C (57°F) by mid-July and reaching 15°C (59°F) in the last ten days. Overall, the average sea temperature in Dun Laoghaire for July is 14°C (57°F). Ideal conditions for a refreshing swim, though some may still find it a bit cool.

Sea Temperature in July in Nearby Cities

Frequently Asked Questions About Water Temperatures in July in Dun Laoghaire

What is the sea temperature in Dun Laoghaire in July?

The water temperature in the Irish Sea in Dun Laoghaire in July ranges from 13°C to 15°C (55°F to 59°F).

Is it possible to swim in the Irish Sea in Dun Laoghaire in July?

The average sea temperature in Dun Laoghaire in July is 14°C (57°F), and the air temperature is 19°C (67°F), so ideal conditions for a refreshing swim, though some may still find it a bit cool.