Samoa's climate is tropical and marked by a distinct wet and warm (November - April) and dry and cool (May-October) seasons. Temperatures are typically tropical (ranging from 24 degreesC-32 degrees C daily) and generally uniform thoughout the year with little seasonal variation due to Samoa's near-equatorial location. The rainfall and humidity are usually high with average annual rainfall about 3,000mm with approximately 66% of the precipitation occuring during the wet season. Samoa experiences southeast trade winds almost all of the year. However severe tropical cyclones occur during the months of December to February. Samoa is vulnerable to anomalously long dry spells that coincide with El Nino South Oscillation (ENSO) phenomena.