Find hotels in Lowell, ME from £74

For most travellers, the best time to visit Lowell is during the summer months, from June to August, or in the early autumn, specifically September.Summer offers the warmest weather, with average temperatures in the low to mid-20s Celsius, making it ideal for outdoor activities like exploring the Lowell National Historical Park or taking a boat tour on the Merrimack River. This period also sees the most extended daylight hours, allowing for more sightseeing. It's a great time for families to visit, as many of the park's interactive exhibits and ranger-led programmes are in full swing.September provides a pleasant alternative with slightly cooler temperatures, usually in the high teens or low 20s Celsius, and often fewer crowds. The foliage begins to change, offering picturesque scenery, particularly along the canals and the riverbanks. This month is particularly appealing for couples or solo travellers who prefer a more relaxed pace and enjoy walking through the historic mill complexes without the peak summer bustle.While spring (April-May) can be lovely with blooming flowers, the weather can be unpredictable, and some outdoor attractions might have limited hours.