What do men/ tourists need to bring for 10 day trip in Nov.?

Whatever you would wear in hot weather elsewhere. Be aware that some wats will require long pants rather than shorts, so lightweight long pants will be useful for visiting wats, for better restaurants, and for evenings any place where there might be mosquitoes. In addition to t-shirts, bring at least a couple of shirts with collars for better restaurants.

I do exactly as Kathie has suggested, although during the day I am wearing shorts more often than in years past.

light weight cotton loose fitting garments... btw, laundry outside hotels is very cheap

Long sleevesvand pants are essential at times for protection against mozzies

Men only? Bring plenty of protection.

we never find mosquitos to be a problem

there is a quite plausible theory that we ALL are bitten by mosquitoes, but many of us don't give off any reaction to their bite - so just because "they don't bother you" don't be so sure they aren't biting you.

There are of course many other factors to getting bit - sweat, CO2 and the kind of silhouette you make (pale clothes are meant to be less visible to mozzies light sensors.)

"natural" repellents - only some work and ALL don't last as long as DEET.
dawn and dusk are peak times to avoid bare flesh....

I suppose this is the point where I am supposed to step and and note that the mosquitos that spread dengue tend to be urban mosquitos and daytime biters. And to note that the other effective repellant (in addition to meet) is picardin.

Koh Samui !

Ellen, Nov isn't the best time for Koh Samui, as on average they have 11 inches of rain in Nov.

When health matters enter the ring, the sound advice is to make sure you have the correct travel insurance to meet your needs, AND to make sure you make an appointment with your GP travel clinic for about 6 weeks before you travel.

Your GP will have your medical records and know your medical history. Even IF their advice regarding mosquitoes is simply to use common sense precautions, there may be other issues such as you might be out-of-date for standard inoculations.

Dengue are called "daytime bitters" because they actually can be active at both day and night - they are usually most active at dawn and dusk; the middle of the day - in sunshine - is too hot for any small insect to be active - they seek shade.
As they (females only) have to bite infected people to spread the disease, and have a limited flying range and feed only 12 hours or so, they prefer a closely packed population to spread the disease.

Dengue thread.....http://www.fodors.com/community/asia...d-358631-2.cfm

khunwilko. I hope you are not implying that the mosquitoes act in the belief that they know anything about any diseases they may or may not spread about. 'Prefer' is a human attribute.

I am certainly not anthropomorphising, but you will find several examples of the word "preference" and derivatives used to describe animal and plant behaviour in even the most erudite papers on wildlife.

If you forget anything, you can easily buy clothing in Thailand. If you are "hefty", you can buy material and have a tailor make what you want. Clothing is very cheap in Thailand.