Global Highlights:
1.The combined global land and ocean surface temperature for September 2009 was 0.62°C (1.12°F) above the 20th Century average of 15.0°C (59.0°F). This was the second warmest September on record, behind 2005, and the 33rd consecutive September with a global temperature above the 20th Century average. The last below-average September occurred in 1976.
2.The global land surface temperature for September 2009 was 0.97°C (1.75°F) above the 20th Century average of 12.0°C (53.6°F), and ranked as the second warmest September on record, also behind 2005.
3.The worldwide ocean temperature tied with 2004 as the fifth warmest September on record, 0.50°C (0.90°F) above the 20th Century average of 16.2°C (61.1°F). Warmer-than-average sea surface temperatures were widespread, particularly in lower latitudes. The near-Antarctic southern ocean and the Gulf of Alaska featured notable cooler-than-average temperatures.
4.A weak El Niño persisted across the equatorial Pacific Ocean during September. Sea surface temperature observations in the equatorial Pacific Ocean during the month remained above average. According to NOAA's Climate Prediction Center, El Niño is expected to strengthen and last through the Northern Hemisphere winter of 2009-2010. 
During the month of September, warmer-than-average temperatures were present across Canada, Europe, the northern and western contiguous U.S., eastern Brazil, and most of Asia and Australia. The warmest anomalies occurred in Canada, the northern and western contiguous U.S., western Russia, and parts of Australia, where temperature anomalies ranged from 3-5°C (5-9°F) above the 1961-1990 average.
Northern Hemisphere and the Southern Hemisphere experienced above average temperatures for the combined land and ocean areas, resulting in the second warmest September on record, behind 2005 and 1997, respectively. The Southern Hemisphere September temperature tied with 2003.
During the month of September, warmer-than-average temperatures were present across Canada, Europe, the northern and western contiguous U.S., eastern Brazil, and most of Asia and Australia. The warmest anomalies occurred in Canada, the northern and western contiguous U.S., western Russia, and parts of Australia, where temperature anomalies ranged from 3-5°C (5-9°F) above the 1961-1990 average.Northern Hemisphere and the Southern Hemisphere experienced above average temperatures for the combined land and ocean areas, resulting in the second warmest September on record, behind 2005 and 1997, respectively. The Southern Hemisphere September temperature tied with 2003.
The worldwide sea surface temperatures (SST) during September 2009 were warmer than average, but not record-breaking as the June-August seasonal temperature.
Land, +0.97°C (+1.75°F), 2nd warmest(This year), and warmest ever was 2003 (+0.57°C/1.03°F).
Land and Ocean, +0.62°C (+1.12°F), 2nd warmest (This Year), and warmest ever was 2005 (+0.66°C/1.19°F).
Meanwhile, for rainfall, the areas with the wettest anomalies during September 2009 included the southeastern and south central contiguous U.S., southern Brazil, and parts of India, Scandinavia, the Philippines, and northwestern Africa. The driest anomalies during September 2009 were observed across eastern Asia. 
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