Twenty thousand days at Don Muang

This graphic shows the average daily temp at Don Muang since 1951 (top to bottom). Courtesy of the Thai Meteorology Department. 

Values to left are dips in temp, values to right are hot days. The year markers (white horizontal lines) are set to Songram which as expected is close to the hottest day of the year.

For larger size of this graphic click on "20,000 days in Bangkok" in right sidebar. 

I have several ideas about this record.

1. Bangkok weather is more variable annually than I once expected. Perhaps this is true of Thai people too.

2. There is a very sight rising trend to temps at DM, maybe a degree over the whole sixty three year period. Urban heat island effect (heat-gathering effect of urban development) is certainly part of the reason for this, perhaps the full reason. Hence significant global warming is not apparent in this record.

3. Some apparent changes can probably be explained by the re-siting of the measurement point or changes in immediate surroundings including construction.

4. The small gap at the bottom is due to absence of records during 2011 flooding. The record stops mid 2013, I will add more later.