During the period from May through the first half of July 2010, anomalously warm conditions were found over the Arctic, Eastern Europe, Middle East, central Asia, eastern Eurasia, Alaska, and eastern North America. Warm anomalies were also observed over northwestern and southeastern parts of Africa, central India and the north-to-central part of Brazil. On the other hand, cold anomalies were observed over a few places of African continent, Western Europe, western Russia, Australia, western USA, south part of South America and the eastern Pacific Ocean. The monthly patterns of May and June are similar to the seasonal one. In the first half of July, there was warm condition in northern Australia while the climate condition in most of Africa, Indian subcontinent and the eastern Pacific Ocean was colder than normal.

The western equatorial Indian Ocean, Indonesia adjoining northern Australia, and equatorial Latin America have experienced wet conditions form May through the first half of July. In contrast, it was drier than normal in western Kazakhstan, Indochina, the Philippines, southern USA, most of South America, and the eastern tropical and south tropical Pacific Oceans. The monthly of pattern of May is similar to the seasonal one. In June, dry conditions were observed in Kazakhstan, Mongolia adjoining northern China and North Korea while wet condition was observed in South China. In the first half of July, the region from eastern China to the southern part of Japan, the maritime component of South Asia adjoining north and east parts of Australia, and tropical Latin America experienced wetter than normal condition while Europe, central Asia, eastern Siberia, north Pacific and southern South America experienced drier-than normal condition. The Indian summer monsoon rainfall, since June, is 15% below normal.

The sea surface temperature and sub-surface anomalies in the central to eastern tropical Pacific have been colder than normal, suggesting that La Nina-like conditions are under development.