June is the second hottest month in Kathmandu after the month of May. This is also the month in which most of the people in Nepal, especially those who work in agriculture field anxiously wait for the
rain of fortune - the Monsoon. Early /or delayed or too much /or less monsoon rain change the fate of farmers, and in turn very much affect the economy of Nepal as well as many countries in sub-Indian continent. Fortunately, this year, the monsoon is expected to become active timely and that too is expect to be a normal monsoon. Predicting timing and intensity of Asian monsoon is still a challenge to science due to lack of proper model for complex geo-structure of the region and insufficient data.
This year, the month started with slightly cooler than average temperature for the first half of June. The average maximum temperature till date is almost in par with the monthly average for the month for last 30 years (viz. 29°C). With entry of monsoon rain, it is expected to get lowered, thus, June 2013 could be cooler than average June. Past six years' average maximum monthly temperature was 1.2°C higher than the 30 years average. Whereas, the average monthly minimum temperature for past 30 years and past 6 years are 19°C and 19.4°C respectively.
The month of June in year 2010 and 2012 were the hottest Junes in recent years, with average maximum temperature at 31.1° and 31.2°C respectively. In terms of hot days, June 2010 registered 24days and June 2012 - 21days with daily maximum temperature above 30°C. Whereas June 2008 saw only 9 days with temperature above 30°C and average max temperature was 29.3°C, which was still above the 30 years average monthly max. June 13
th 2012 is the record hottest June day with maximum temperature of 35.2°, whereas June 10
th 2009 registered the lowest temperature of 15.8°C. Similarly, June 19
th was the coolest day, on which the mercury did not cross 23°C mark.
Average monthly rainfall in Kathmandu in June is 236.3mm. The maximum 24 hours rainfall recorded in May was 100.5mm in June 29, 1980. However, the average rainfall in past 6 years is slightly below the 30 years' average, which stands at just above 200mm. 2009 June received only about 50% of the monthly rainfall, with just 121.7mm, similarly, 2010 and 2012 Junes also received less rainfalls (145.1mm and 137.8mm respectively). Whereas, June 2011 received maximum amount of rainfall amounting to 289.2mm. Looking at the amount and rainfall pattern, so far, this month as well as the monsoon forecast by Nepali and Indian meteorological agencies, June 2013 rainfall amount is expected to stand at average at least.
Below comparison of June 2013 weather trend to past six years trend.
Daily averages
Daily Max
Daily Min
Averages and extremes
Number of warm and cold days
data: Meteorological Forecasting Division, Department of Hydrology and Meteorology, World Meteorological Organization, yalamandu.com
Monthly weather trends in recent years for other months:
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