Many sites offer a weather forecast for Malaysia (see below for an example of the weather forecast of Kuala Lumpur). The thing with weather forecasts is that they actually are often not that reliable in tropic regions. For example in Malaysia rain is a daily occurrence. Rain is what keeps the country so beautiful and green. Without rain Malaysia would be a huge desert. Interestingly enough the weather forecasts of Malaysia almost always show that it is 'currently' raining. However most of the times this is untrue. A daily rain shower is completely normal. Don't be too alarmed if you see 'rain' and 'mostly cloudy' every single time you check the weather forecast as this is completely normal in the tropics.