Climate needn't play a dominant role in determining the content of every culture, because some geographical regions have more extreme weather conditions than others relative to what was normal in our evolutionarily formative period.
But if you're talking about Hinduism, Buddhism, Taoism, and the like, I'm not sure. Certainly, those regions in Asia are very hot with high humidity, as opposed to the dry heat of a desert. How would humidity and the annoyance of constant sweating affect a culture?
The dominant trend in the Indian religions (Hinduism, Jainism, and Buddhism) is moksha, a longing to escape from natural plurality. That would be consistent with the annoyance of high humidity. Buddhist regions in South East Asia are some of the most humid regions, so people there would be laser-focused on reducing their disappointment; hence the pragmatic aspect of Buddhism.
Daoism, Confucianism, and Chinese folk religion are different matters. They seem to reflect a deep-seated pragmatism, as I explain elsewhere. I don't know if China has an extreme overall climate to make for a dominant influence on its culture.
Of course, this is all quite speculative and perhaps even a little facetious.
