Long-range Forecasting
Bulletins
YEAR
TOPIC
YEAR
TOPIC
14 MAY 2025
ASEAN Climate Outlook Forum
Twenty Fourth Session of the ASEAN Climate Outlook Forum (ASEANCOF-24)
The ASEAN Climate Outlook Forum (ASEANCOF) serves as a collaborative platform for developing consensus-based seasonal climate forecasts for the region. It supports the ASEAN Specialised Meteorological Centre's (ASMC) role in climate prediction by bringing together expertise from ASEAN weather services. The ASEANCOF Working Group was formed in 2021 to guide the forum's development and implement objective forecasts. The 24th session (ASEANCOF-24) was jointly organised by Cambodia's MOWRAM, RIMES, ASMC, the Working Group, and WMO, with a preceding two-day training workshop led by the UK Met Office, ASMC, and University of Southern Queensland.
14 MAR 2025
ASMC
ASMC Climate Bulletin (Mar 2025)
July – December 2024 Climate Review:
• MJO was unusually active October - December
March to August 2025 Climate Outlook:
09 DEC 2024
ASEAN Climate Outlook Forum
Twenty Third Session of the ASEAN Climate Outlook Forum (ASEANCOF-23)
The Twenty-third session of ASEANCOF (ASEANCOF-23) was organised by the Department of Meteorology and Hydrology of Lao PDR, RIMES, the ASEANCOF Working Group, and WMO. Participants from the NMHSs of ASEAN Member States created a consensus forecast for the boreal winter monsoon 2024/2025 in the ASEAN region. The consensus for the December-January-February (DJF) 2024/2025 outlook was achieved through an online session, which included presentations from ASEAN NMHSs, questionnaires, and discussions regarding the current climate conditions and predictions for Southeast Asia. The theme of ASEANCOF-23 was Agriculture and Climate Services. On the last day of ASEANCOF-23, a sharing session was held which included updates from ASEANCOF-22 around the use of climate services for agriculture.
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05 JUN 2024
ASEAN Climate Outlook Forum
Twenty Second Session of the ASEAN Climate Outlook Forum (ASEANCOF-22)
The Twenty-Second session of ASEANCOF (ASEANCOF-22) was organised by the Department of Meteorology and Hydrology of Lao PDR, RIMES, the ASEANCOF Working Group, and WMO. Participants from the NMHSs of ASEAN Member States created a consensus forecast for the boreal summer monsoon 2024 in the ASEAN region. The consensus for the June-July-August (JJA) 2024 outlook was achieved through a hybrid session, which included presentations from different NMHSs, questionnaires, and discussions regarding the current climate conditions and predictions for Southeast Asia. There was also two-day pre-COF training, conducted by the UK Met Office under the WISER Asia Pacific project and RIMES. The theme of ASEANCOF-22 was Agriculture and Climate Services, with a focus on drought. On the last day of ASEANCOF-22, a sharing session was held which included presentations from UN ESCAP, FAO, and WFP, as well as di...
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28 MAR 2024
ASMC
ASMC Climate Bulletin (Mar 2024)
July – December 2023 Climate Review:
• Both an El Niño and positive IOD event were present.
March to August 2024 Climate Outlook:
30 NOV 2023
ASEAN Climate Outlook Forum
Twenty First Session of the ASEAN Climate Outlook Forum (ASEANCOF-21)
The Twenty-First session of ASEANCOF (ASEANCOF-21) was organised by Meteorological Service Singapore (MSS) in collaboration with ASMC and the ASEANCOF Working Group. ASEANCOF-21 marked 10 years since the first ASEANCOF was held in December 2013. Participants from the NMHSs of ASEAN Member States created a consensus forecast for the boreal winter monsoon 2023/2024 in the ASEAN region. The consensus for the December-January-February (DJF) 2023/2024 outlook was achieved through an online session, which included presentations from different NMHSs, questionnaires, and discussions regarding the current climate conditions and predictions for Southeast Asia. The theme of ASEANCOF-21 was ‘The Future of Climate Services in Southeast Asia’’.
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01 JUN 2023
ASEAN Climate Outlook Forum
Twentieth Session of the ASEAN Climate Outlook Forum (ASEANCOF-20)
The Twentieth session of ASEANCOF (ASEANCOF-20) was organised by ASMC and the ASEANCOF Working Group. Participants from the NMHSs of ASEAN Member States created a consensus forecast for the boreal summer monsoon 2023 in the ASEAN region. The consensus for the June-July-August (JJA) 2023 outlook was achieved through an online session, which included presentations from different NMHSs, questionnaires, and discussions regarding the current climate conditions and predictions for Southeast Asia. In particular, ASEANCOF considered the influence of the El Niño Southern Oscillation (ENSO) and the Indian Ocean Dipole (IOD) on the climate system over Southeast Asia. The theme of ASEANCOF-20 was ‘Advances in climate services on subseasonal to seasonal timescales’.
28 MAR 2023
ASMC
ASMC Climate Bulletin (Mar 2023)
July – December 2022 Climate Review
- An Indian Ocean Dipole (IOD) event in Q3 of 2022 with continued La Niña conditions in the second half of 2022.
March to August 2023 Climate Outlook
- La Niña conditions likely to transition into ENSO neutral by Q2 2023.
- Above-normal rainfall is predicted over northern Maritime Continent and much of Mainland Southeast Asia, with below-normal rainfall predicted over much of southern half of the Maritime Continent.