Visiting the Grand People's Study House in Pyongyang is best during the spring or autumn months – specifically from April to May and from September to early November. During these periods, the weather is temperate, striking a perfect balance, neither too hot nor too cold, ensuring a comfortable exploration of the Grand People's Study House. Spring affords visitors the beautiful cherry blossoms and the celebratory atmosphere of North Korean national holidays like the Day of the Sun and Military Foundation Day. Similarly, autumn provides a scenic backdrop with leaves changing colors, and it also coincides with national celebrations such as the Party Foundation Day and the anniversary of the founding of the Workers' Party of Korea.
Keep in mind that North Korea has a controlled tourism environment and visiting the Grand People's Study House will require you to be part of an organized tour. The schedule of these tours is arranged and tightly controlled by the government. It's important to check what specific dates and times the study house is open for tourists, as there may be restrictions and days when it is not accessible. If you can, try to align your visit with one of the major national holidays for a more vibrant experience, but also expect larger crowds and more restrictions during these times. Regardless of when you visit, ensure that you follow all the local laws and travel guidelines set forth by tour operators and the North Korean government.