Thistle Island — Water Temperature in April

Water Temperature Range

16°C

minimum

19°C

average

21°C

maximum

Water Temperature Chart for April

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

	2026	2025	2024	2023
APR 1	19°C	21°C	20°C	18°C
APR 2	19°C	21°C	19°C	19°C
APR 3	19°C	21°C	21°C	18°C
APR 4	19°C	21°C	21°C	18°C
APR 5	19°C	21°C	20°C	17°C
APR 6	19°C	20°C	19°C	17°C
APR 7	19°C	20°C	20°C	18°C
APR 8	19°C	21°C	20°C	17°C
APR 9	19°C	19°C	21°C	17°C
APR 10	19°C	19°C	21°C	18°C
APR 11	18°C	19°C	19°C	18°C
APR 12	18°C	20°C	20°C	19°C
APR 13	18°C	20°C	20°C	17°C
APR 14	18°C	21°C	19°C	17°C
APR 15	18°C	20°C	19°C	18°C
APR 16	18°C	20°C	19°C	17°C
APR 17	18°C	21°C	19°C	17°C
APR 18	18°C	20°C	18°C	18°C
APR 19	18°C	19°C	19°C	18°C
APR 20	18°C	20°C	19°C	17°C
APR 21	18°C	21°C	20°C	18°C
APR 22	18°C	20°C	18°C	18°C
APR 23	18°C	20°C	19°C	18°C
APR 24	18°C	20°C	19°C	17°C
APR 25	18°C	18°C	18°C	17°C
APR 26	18°C	19°C	19°C	17°C
APR 27	18°C	18°C	19°C	18°C
APR 28	18°C	19°C	18°C	18°C
APR 29	18°C	20°C	18°C	16°C
APR 30	18°C	19°C	19°C	16°C

Climate and Swimming Opportunities in Thistle Island in April

Average Day Air Temperature

21°C

Average Night Air Temperature

12°C

Precipitation Amount per Month

40 mm

Number of Rainy Days

Daylight per Day

11 hrs

Sunshine per Day

7 hrs

Average Wind Speed

14 km/h

Average Humidity

55%

At such water and air temperatures, swimming feels cool and invigorating. It’s comfortable for a quick dip, and you’ll feel fine as long as you warm up soon after.