For period of 27 January - 2 February 2012. Weather Forecast The rather active high pressure areas which cover Laos and Vietnam will extend to cover upper Thailand during 27-31 Jan.,causing in rainfall and windy, and then decreasing in temperature.The mountain tops still very cold with frost in some areas and dense fog in various areas. Since 1 Feb., this high pressure areas will weaken accompanying with the southeasterly wind, moist air from the Gulf of Thailand, will prevail over central and eastern Thailand, resulting in isolated showers. For southern Thailand there will be isolated showers and sea wave will strengthen during 28-31 Jan.