Bunmahon — Water Temperature in April

Water Temperature Range

8°C

minimum

9°C

average

12°C

maximum

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

April: Climate and Swimming Opportunities

Average Night Air Temperature

6°C

Average Day Air Temperature

13°C

Precipitation Amount per Month

64 mm

Number of Rainy Days

Daylight per Day

14 hrs

Sunshine per Day

5 hrs

Average Wind Speed

19 km/h

Average Humidity

81%

At such water and air temperatures, swimming feels icy and can be a shock to the body. If you go in at all, keep it extremely short and warm up immediately afterward.