- Slightly below (above) normal rainfall expected in the equatorial Pacific Ocean, southwestern Australian continent and the central part of South America (the eastern part of Australian continent including South Pacific Ocean, most of the maritime continent, southern part of India and adjoining region, tropical Central America) during JJA. During SON, slightly wet conditions likely in the eastern Australian continent, most of the maritime continents, tropical Central America, and the northern part of South America.
- Slightly colder (warmer) than normal condition expected in the vicinity of Hawaiian Islands and eastern equatorial Pacific Ocean (southern part of mainland Southeast Asia and maritime continents excluding New Guinea Island, Caribbean Islands) during JJASON.

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¹The experimental 6-month APCC forecast outlook, as the name indicates, is currently under development, and does not replace the operational rolling monthly 3-month forecast.
²with initial conditions of May 2010, providing a forecast with lead time of 1-6 months.

The APCC 6-month forecast for the June-August, 2010 indicates the current ENSO signal maintains neutral conditions in the central and eastern equatorial Pacific Ocean. However, there is a chance that it will be developing to La Niña conditions. The eastern part of Australian continent including South Pacific Ocean, most of maritime continents excluding a few areas of Indonesia, tropical Central America, southern and northern part of the Indian subcontinent are likely to experience slightly wetter than normal conditions. Anomalous dry conditions over the equatorial Pacific Ocean, the southwestern Australian continent and the central part of South America are expected. It is likely that cold signals occur in the vicinity of Hawaiian Islands and eastern equatorial Pacific Ocean, the Indian subcontinent and northern part of Africa. Most part of mainland Southeast Asia and maritime continents, Caribbean Islands and the western tropical Africa may experience anomalously warmer than normal conditions.