As the year progresses it continues to get warmer in Bali in March. The average temperature this month is 27°C (80°F), while the average low is 23°C (73°F), and the average high is 30°C (86°F). The beginning of March brings a mixture of days filled with sun, with those that are overcast, and a daily average temperature of about 26°C (79°F). The middle of the month is roughly the same, with a slight decrease in the chance of rain, and with a slight increase in temperature, to a daily average of 27°C (80°F). The end of the month again brings a smaller chance of rain, as well as slightly warmer temperatures, with a daily average of 28°C (82°F), not much of an increase from the beginning of the month. The coldest ever recorded temperature in March was 22°C (72°F), while the hottest ever recorded temperature was 37°C (97°F).
As the days get warmer, the amount of daily sunshine increases as well. The average amount in March is seven hours a day. This coincides with a decrease in the average amount of rain this month. The average total this month is the same as in February (90mm), but as it is spread out over less days (15 in February to 14 in March) – and there are more days in the month in March – means less total rainfall.
Although the days are getting longer and hotter, the temperature of the sea is actually cooling. The average sea temperature in March is 28°C (82°C), which is a slight decrease from February. Even with the decrease, this is still very warm water that can be enjoyed by everyone, and for sustained periods as well, not just a quick dip.
The humidity in March stays constant with the high totals in January and February, which is likely to do with it still being “wet season.” The average humidity in March is 80% which is high enough to cause discomfort. As the average high this month is 30°C (86°F), this means there are plenty of days with temperatures warmer than this, which is an unpleasant combination with already high humidity levels.
It is important to note that Nyepi Day is in March, which is a holy day in Bali. Practicing Hindus remain completely silent on this day and all residents are to remain indoors and make no noise. Outside activity is forbidden and the holy day lasts from 6 AM to 6 AM the following day. Beaches are closed and the airport is shutdown as well. In 2015, this day falls on March 21st, but check your calendar as it is a different day of March each year.