Available moisture throughout the country, and particularly in the south, is likely to be reduced due to increased evaporation as temperatures rise. This could well lead to a marked increase in the frequency of droughts and may prove the major impact of climate change. Tropical cyclone numbers may also be affected by the regional change in climate, with an increase in frequency and, perhaps, strength expected to occur. The likely global trend represents an increase in the rate of change in sea level along Vietnam's coast by a factor of two to three. For Hondau, this would mean a rise in sea level of up to 64cm by the year 2100, compared with a rise of about 20cm if the trend of the most recent decades continues.
Further work is needed to provide a more detailed projection of Vietnam's climate in years to come.
The results of climate modelling experiments must be supplemented by understanding of regional conditions based on the experience of Vietnamese experts.