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Water temperature in Annapolis (MD) in August

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Is it warm enough to swim in Annapolis in August? Average water temperature in Annapolis in August is 80.4°F and therefore suitable for comfortable swimming. The warmest sea in Annapolis in August is 85.6°F, and the coldest is 75.7°F. Average high air temperature in Annapolis in August is 84°F, and average low temperature is 69°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Annapolis

Changes water temperature in Annapolis in August 2025, 2024

To get an accurate forecast for the water temperature in Annapolis for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Annapolis, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of August.

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024 Min Max
August 182.2°F82.6°F77.5°F84°F
August 281.1°F83.1°F77.4°F84.9°F
August 381°F83.3°F77.4°F84.2°F
August 481.7°F82.8°F77.5°F83.8°F
August 581.7°F83.3°F78.1°F84.6°F
August 680.2°F83.7°F77.5°F83.7°F
August 779.2°F84°F77°F84°F
August 878.6°F82.4°F77.5°F83.5°F
August 979.2°F82°F78.1°F84.6°F
August 1079.7°F82°F78.4°F84.6°F
August 1181.3°F81.5°F78.6°F83.7°F
August 1281.7°F80.6°F78.4°F83.5°F
August 1382.2°F81.3°F78.1°F84.4°F
August 1482.2°F80.8°F77.7°F84.7°F
August 1583.3°F81°F77.4°F84.9°F
Day 2025 2024 Min Max
August 1684°F81.3°F77.5°F85.6°F
August 1783.5°F80.2°F77.4°F85.3°F
August 1881.7°F81.1°F76.6°F85.3°F
August 1979.5°F80.4°F75.9°F85.1°F
August 2078.8°F79.3°F76.6°F84.9°F
August 2177.9°F77.9°F77.4°F84.4°F
August 2277.5°F76.8°F76.8°F83.7°F
August 2377.5°F77.2°F77.2°F83.7°F
August 2478.1°F77.7°F77°F82°F
August 2578.3°F77.9°F77.2°F82.8°F
August 2677.5°F78.3°F77.5°F82.8°F
August 2777.4°F78.8°F77.4°F83.3°F
August 2876.8°F79.9°F76.8°F84.4°F
August 2976.8°F80.6°F76.3°F82.9°F
August 3075.6°F78.8°F75.6°F82.9°F
August 3175°F78.8°F75°F83.3°F
Annapolis water temp chart in August

Average water temperature in Annapolis in August over a decade

20162017201820192020
83.3°F79.3°F81.1°F81.5°F81.7°F
20212022202320242025
81.3°F82°F80.4°F80.6°F80.6°F

Annapolis sea state in August

Chart comparing the height of waves in Annapolis in August over the past years. The red line indicates the height of the waves when swimming in the sea is prohibited. To view the current sea conditions, click on the graph.

Waves height in Annapolis in August

Weather and climate in Annapolis in August

This data display average monthly climate indicators in Annapolis in August based on our historical weather readings over a period of ten years. In addition to temperature, we include data on the number of rainy and sunny days so you can have all the information about your destination before your trip

  • Average HIGH temperature84°F
  • Average LOW temperature69°F
  • Average rainfall days9 days
  • Average rainfall99mm/3.9''
  • Average daylight14h
  • Average sunshine9h
  • Average UV index8

Annapolis water temperature during other months:

You can also view information about water temperature for other months by clicking on the month button below

Where is the warm sea water in August?

Want to know where the water temperature in August is good for swimming? Select the continent of interest, the day of the month and the required water temperature

Region
Date (day and month)
Water temperature: min 60°F
 Average temperature  Maximum temperature

Temperature in neighboring cities

The nearest locations with the average water temperature in August. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

AvrMinMax
Herald Harbor80.4°F75.7°F85.6°F
Naval Academy80.4°F75.7°F85.6°F
Severna Park80.4°F75.7°F85.6°F
Hillsmere Shores80.2°F75.9°F85.6°F
Robinwood80.2°F75.9°F85.6°F
Gibson Island80.2°F75.7°F85.8°F
Mayo80.2°F75.9°F85.6°F
Selby-on-the-Bay80.2°F75.9°F85.6°F
Edgewater80.2°F75.9°F85.6°F
Londontowne80.2°F75.9°F85.6°F

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[1] - The "Blue Flag" is awarded to beaches which fulfill a number of criteria, including: the quality of the bathing water, which must be in accordance with the relevant European Union Directive environmental education and information and beach area management and safety.

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Our report for Annapolis is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.

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