Hotels are packed, so plan in advance. Due to sunny days that never get too scorching (the average high in July and August is in the low 80s), this is a popular time for outdoors types.
Off Season: December to February
Best hotel and restaurant deals, but since Oregonians are used to the rain there’s still plenty to do indoors; you’ll experience a side of this city most tourists miss.
Sweet Spot: March to April; November
Crowds are thin due to rain, but if the weather warms up early you can explore every side of Portland in March and April; fortunately, hotels generally offer low-season rates, making it more appealing to folks on a budget.