Subseasonal Weather Outlook and Review

Wetter conditions are predicted over much of southern Mainland Southeast Asia in Week 1 (29 May – 4 June). These wetter conditions are predicted to extend northwards over parts of central Mainland Southeast Asia in Week 2 (5 – 11 June). Wetter conditions are also predicted over much of the Philippines in the next fortnight (29 May – 11 June).

Drier conditions are predicted over much of the southern ASEAN region in Week 1 (29 May – 4 June). These drier conditions are predicted to ease during Week 2 (5 – 11 June).

Warmer than usual temperature is predicted over much of the southern ASEAN region during the next fortnight (29 May – 11 June), in line with the predicted drier conditions. Warmer conditions are also predicted over the northern half of Mainland Southeast Asia in Week 1 (29 May – 4 June).

A Madden-Julian Oscillation (MJO) signal was present over the Western Pacific (Phases 6 and 7) in the second half of May. Most models predict this MJO signal to decay in Phases 7 or 8 during Week 1.

The outlook is assessed for the region in general, where conditions are relative to the average conditions for the corresponding time of year. For specific updates on the national scale, the relevant ASEAN National Meteorological and Hydrological Services should be consulted.

Wetter conditions are predicted over much of southern Mainland Southeast Asia in Week 1 (29 May – 4 June). These wetter conditions are predicted to extend northwards over parts of central Mainland Southeast Asia in Week 2 (5 – 11 June). Wetter conditions are also predicted over much of the Philippines in the next fortnight (29 May – 11 June).

Drier conditions are predicted over much of the southern ASEAN region in Week 1 (29 May – 4 June). These drier conditions are predicted to ease during Week 2 (5 – 11 June).

Warmer than usual temperature is predicted over much of the southern ASEAN region during the next fortnight (29 May – 11 June), in line with the predicted drier conditions. Warmer conditions are also predicted over the northern half of Mainland Southeast Asia in Week 1 (29 May – 4 June).

A Madden-Julian Oscillation (MJO) signal was present over the Western Pacific (Phases 6 and 7) in the second half of May. Most models predict this MJO signal to decay in Phases 7 or 8 during Week 1.

The outlook is assessed for the region in general, where conditions are relative to the average conditions for the corresponding time of year. For specific updates on the national scale, the relevant ASEAN National Meteorological and Hydrological Services should be consulted.