Long Island — Water Temperature in June

Water Temperature Range

13°C

minimum

18°C

average

23°C

maximum

Get instant access to real-time water temperatures for this and all other locations with our iOS and Android apps.

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

June: Climate and Swimming Opportunities

Average Night Air Temperature

15°C

Average Day Air Temperature

25°C

Precipitation Amount per Month

91 mm

Number of Rainy Days

Daylight per Day

15 hrs

Sunshine per Day

9 hrs

Average Wind Speed

14 km/h

Average Humidity

72%

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.