The resort towns on the Atlantic are most popular in summer, and usually quite crowded. The fringe season, May and especially September, is a great time to find cheaper rates, comfortable temperatures, and quieter beaches.
Peak season for the Eastern Shore, Annapolis, and Southern Maryland is April through October, when the weather clears up for boating and the fish start biting.
Most everything is open in Baltimore year-round, though because of its boating culture and baseball season, summer is the most popular and crowded time to visit. The best time is usually in May or fall, when the weather is likely to be sunny but not so humid.
Western Maryland attracts visitors year-round, though spring can be too cool and soggy. Fall is magnificent, especially around mid-October; when it snows, winter is beautiful; summers are cooler here than in the rest of the state.
Wilmington and the Brandywine Valley are year-round destinations.
Most attractions offer festivals and events year-round. In the temperature chart above, Baltimore information applies generally to Wilmington and the Brandywine Valley as well; expect summer temperatures to be slightly higher on the southern Eastern Shore and on the coast. Remember that monthly averages can be deceiving: Even though the average temperature in Baltimore during July is 77°F (25°C), days in the 90s (32°C and up) are common.
