The best time to go to Gouda for pleasant weather and fewer crowds is during the shoulder seasons of May, June, or September.
Gouda experiences its warmest temperatures from June to August, with averages around 20-22°C (68-72°F). This is also when the city sees the most tourists, particularly for the famous Gouda Cheese Market which runs weekly on Thursdays from April to August. If you're keen to see the traditional cheese market in full swing, July and August offer the best chance.
For those who prefer a more relaxed visit with comfortable temperatures for exploring, May, June, and September are ideal. The weather is generally mild, ranging from 15-20°C (59-68°F), and you'll find the city less crowded, making it easier to enjoy the historic centre, canals, and museums without the peak season bustle.
If you're interested in the festive atmosphere of the Christmas period, late November and December offer a great experience. The Gouda by Candlelight event in mid-December is particularly special, though it will be colder with temperatures typically between 0-5°C (32-41°F).