Ocean City Weather in September
In Ocean City, September brings high daytime temperatures around 26°C (79°F), with nights cooling to 18°C (64°F). Expect quite a bit of rainfall this month.
Rainfall in Ocean City in September
Rain is expected on roughly 10 days, totalling around 118 mm (4.6 in) for the month. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.
Temperature in Ocean City in September
September in Ocean City sees highs of 26°C (79°F) and lows of 18°C (64°F) overnight. This kind of day-to-night contrast is typical for this time of year. Nights cool down to 18°C (64°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.
Average water temperature in September
The water is 21°C (70°F) this month — a comfortable temperature that most swimmers enjoy. Warm enough to stay in without getting cold quickly.Should you favor a climate that's both dry and comfortably warm, May and July typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Ocean City's climate page.
Ocean City Temperature in September
Min Temperature
18°C (64°F)
Max Temperature
26°C (79°F)
Water Temperature
21°C (70°F)
Chance of Rain
33%
Precipitation
118 mm (4.6 in)
Rainy days
10 days
Humidity
74%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Ocean City typically drop from around 27°C (81°F) at the start of September to approximately 24°C (75°F) by the end. Nights are pleasant, with lows typically ranging from 13°C (55°F) to 19°C (66°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Ocean City in September
Browse day-by-day weather records for Ocean City spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Ocean City historical weather extremes in September
Our historical data for Ocean City spans 1984 to 2025, revealing these weather extremes.
- The hottest September day on record in Ocean City reached 36°C (97°F) (September 1, 1995).
- The coldest September day was on September 28, 1984, with a maximum of 15°C (59°F).
- The lowest overnight temperature recorded in September was 4°C (39°F) (September 28, 1989).
Best Places in the United States of America in September
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →
perfect weather
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tolerable
unpleasant
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What to Wear in Ocean City in September
Warm but pleasant conditions in Ocean City in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Expect heavy rainfall, so bring good rain protection and waterproof bags. Expect water temperatures of around 21°C (70°F), which is ideal for taking a refreshing dip. Bring swimwear and consider packing a towel for drying off.What To Do in Ocean City in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Ocean City's climate page.
Temperature Rainfall Humidity Water Temp
See the full Ocean City climate overview or explore weather in the United States of America.
