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With 120–140 rainy days per year, Kerala has a wet and maritime tropical climate influenced by the seasonal heavy rains of the southwest summer monsoon. In eastern Kerala , a drier tropical wet and dry climate prevails. Kerala 's rainfall averages 3,107 mm annually. Some of Kerala 's drier lowland regions average only 1,250 mm; the mountains of eastern Idukki district receive more than 5,000 mm of orographic precipitation, the highest in the state.
In summers, most of Kerala is prone to gale force winds, storm surges, cyclone-related torrential downpours, occasional droughts, and rises in sea level and storm activity resulting from global warming. Daily average high 36.7 °C; low 19.8 °C. Mean annual temperatures range from 25.0–27.5 °C in the coastal lowlands to 20.0–22.5 °C in the eastern highlands. |
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