I agree with Kingalien, that's very light for rainwear. You didn't mention your budget or your style of travel. Good ultra-light rainwear can be very expensive. Cheap ultra-light rainwear can be lacking in durability. If you'll be backpacking that's a consideration.

Having said that...agree with checking sites like REI. Patagonia usually has some super light-weight raingear (I don't own any myself because it exceeds my budget). You mentioned SE Asia. You might find a bargain in cycling wear. There's some very lightweight cycling rainwear for a decent price.

You might also look for pit-zips (ventilation). There's also some very lightweight cycling wear with zip-off sleeves - depending where you are, maybe you don't care if your arms are bare and get wet.

Also, don't discount the added benefits of an umbrella. If not, will you be needing a hood? Personally, I have yet to find a hood that is really comfortable, keeps me dry, and doesn't interfere with my sightseeing (head turns). I usually wear a hat with a brim under my rain hood or, if I'm in the city, carry an umbrella.

BTW, where are you planning to travel?