The South : It does rain very little and the 2 weeks of yearly rains are much concentrated over the months of Jan and Feb.
Most tours can, however, be organized and specially boats and dug out expeditions as roads are sometimes flooded for good.

The West : It does rain quite a bit and roads are closed for months in the most remote parts of this region. Let's ban anything really serious from Nov through march or april. Boat cruises are possible even during the cyclonic season.

The North West : Same type of weather as on the west but somehow better roads facilitate excursions, even during the rain season. The Ankarana tsingy is not a viable option during the rains as it can get extremely muddy around there, ...

The East and North East : That's getting serious there. It rains all year long and the driest months are Sept-Oct-Nov. It rains mostly at night and if you're staying in hotels it's standable!

The High Lands : It does rain quite a bit from Nov to march but usually in the aftyernoons and it is oerfect weather for whitewater .

Temperatures : The coast is a bit hot for serious walking and so are some areas like Isalo, Makay, Bemaraha can get TOO hot for any serious physical activities during the rain season.

On the High Lands, temps are reasonnable all year through but get real chilly in winter (june-Sept). Even on the coasts you'll need sweaters and jackets for the coldest days or nights.