This graphic is from a study by Joseph Khedari done in Thailand with Thai students. With humidity in Bangkok in the hot season at 70 percent or more, we see that comfortable temperatures range from about 27C with no fan, up to 32 degrees with a fan air velocity of about 1 m/s. This applies to a person sitting at work with no shirt and a fan blowing on the face at about 1 meter distance, which I find refreshing -- more so than air conditioning. An overhead fan works too (I am sitting under one as I type this entry) but only if there is not a pocket of hot air lurking above near the ceiling.
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