Annapolis Weather in September

September in Annapolis typically sees daytime highs of 25°C (77°F) and nighttime lows of 18°C (64°F). Rainfall is also possible this month, so it's worth packing an umbrella.

Rainfall in Annapolis in September

This month experiences about 9 days of rain according to historical data, averaging 110 mm (4.3 in). Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.

Temperature in Annapolis in September

Temperatures in Annapolis in September top out at 25°C (77°F) and drop to 18°C (64°F) overnight. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. At 18°C (64°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.

Sunshine in Annapolis in September

The city usually sees around 225 hours of sunlight, indicating many sunny days — a great month for sightseeing.

Should you favor a climate that's both dry and comfortably warm, May typically offers 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.

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For a detailed overview over the year and the best time to visit the United States of America, check out our Annapolis's climate page.

Annapolis Temperature in September

Min Temperature 18°C (64°F)  

Max Temperature 25°C (77°F)  

Chance of Rain 30%  

Precipitation 110 mm (4.3 in)  

Rainy days 9 days  

Humidity 68% *  

Sunshine 225 hours *  

Percentage Sunshine 60% *  

* Data from: Washington DC, the United States of America (48 KM, 30 Miles).

What to Wear in Annapolis in September

Warm but pleasant conditions in Annapolis 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. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Annapolis in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

9/10

Cycling

7/10

Walking

7/10

Camping

6/10

Outdoor sports

7/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Annapolis's climate page.

More climate data for Annapolis

Temperature Rainfall Sunshine Humidity

See the full Annapolis climate overview or explore weather in the United States of America.