General Weather Forecast for 2021 Rainy Season
Issued on 28.4.2021
Onset and withdrawal of Southwest Monsoon
Southwest monsoon is likely to set into the whole country during (3– 8) June, 2021. Southwest monsoon is likely to retreat from the whole country second week of October, 2021.
Early Monsoon Period Forecast
The early monsoon period is establishment of Southwest Monsoon over Myanmar to the end of June. Two low pressure areas may form over the Bay of Bengal and one may further intensify into the Depression. During the early monsoon period, monsoon will be moderate. Rain or thundershower will be expected about normal in Nay Pyi Taw, Sagaing, Mandalay, Magway, Bago, Yangon, Ayeyarwady, Tanintharyi Regions and Kachin, Shan, Chin, Rakhine, Kayah, Kayin, Mon States.
Mid Monsoon Period Forecast
Mid Monsoon period is a period of starting from 1st July to the end of August. Four Low Pressure Areas may form over the Bay of Bengal and one may further intensify into the Depression. During the mid-monsoon period, monsoon will be moderate to strong. Rain or thundershower will be expected below normal in Lower Sagaing, Mandalay, Magway Regions and about normal in Nay Pyi Taw, Upper Sagaing, Bago, Yangon, Ayeyarwady, Taninthayi Regions and Kachin, Shan, Chin, Rakhine, Kayah, Kayin, Mon States.
Late Monsoon Period Forecast
Late Monsoon period is a period starting from 1st September to the date of Monsoon withdrawal from the whole country. Three Low Pressure Areas may form over the Bay of Bengal and one may further intensify into the Depression. During the late monsoon period, monsoon will be weak to moderate. Rain or thundershower will be expected about normal in Nay Pyi Taw, Sagaing, Mandalay, Magway, Bago, Yangon, Ayeyarwady, Taninthayi Regions and Kachin, Shan, Chin, Rakhine, Kayah , Kayin, Mon States.