Assateague Island — Water Temperature in October

Water Temperature Range

15°C

minimum

20°C

average

24°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	2025	2024	2023	2022
OCT 1	22°C	22°C	21°C	23°C
OCT 2	22°C	22°C	22°C	22°C
OCT 3	22°C	22°C	22°C	22°C
OCT 4	22°C	22°C	22°C	22°C
OCT 5	22°C	22°C	22°C	22°C
OCT 6	24°C	24°C	23°C	24°C
OCT 7	23°C	23°C	22°C	24°C
OCT 8	21°C	21°C	21°C	21°C
OCT 9	22°C	22°C	22°C	21°C
OCT 10	21°C	21°C	22°C	20°C
OCT 11	21°C	21°C	22°C	20°C
OCT 12	20°C	20°C	20°C	20°C
OCT 13	21°C	21°C	21°C	20°C
OCT 14	20°C	20°C	21°C	19°C
OCT 15	20°C	20°C	21°C	19°C
OCT 16	21°C	21°C	22°C	19°C
OCT 17	19°C	19°C	20°C	18°C
OCT 18	19°C	19°C	19°C	18°C
OCT 19	19°C	19°C	19°C	18°C
OCT 20	19°C	19°C	20°C	18°C
OCT 21	19°C	19°C	20°C	17°C
OCT 22	19°C	19°C	20°C	17°C
OCT 23	19°C	19°C	20°C	17°C
OCT 24	18°C	18°C	19°C	17°C
OCT 25	18°C	18°C	19°C	16°C
OCT 26	18°C	18°C	19°C	16°C
OCT 27	18°C	18°C	19°C	16°C
OCT 28	17°C	17°C	18°C	16°C
OCT 29	17°C	17°C	18°C	15°C
OCT 30	17°C	17°C	19°C	15°C
OCT 31	17°C	17°C	19°C	15°C

October: Climate and Swimming Opportunities

Average Night Air Temperature

9°C

Average Day Air Temperature

20°C

Precipitation Amount per Month

88 mm

Number of Rainy Days

Daylight per Day

11 hrs

Sunshine per Day

7 hrs

Average Wind Speed

15 km/h

Average Humidity

75%

With such a ratio between the average monthly temperatures of water and air, swimming feels warm and comfortable even if the day isn’t hot. The water can feel warmer than the air, so getting out may feel a bit cool.