September weather forecast
Ca Mau, Vietnam

In September, Ca Mau slowly transitions from the monsoon phase to the Dry season, with rainfall decreasing from 89mm (3.5") to 68mm (2.68"), though scattered showers persist. Nature revels in the shift in weather, painted with lush greenery from months of rain. Locals and tourists can step out more confidently without the constant need for umbrellas. However, the humidity level still remains quite high, indicating the dampness in the air. The weather conditions at the end of September gracefully give way to an even dryer October.

Temperature

The advent of September in Ca Mau denotes an average high-temperature of a still tropical 30.8°C (87.4°F), subtly different from August's 31.6°C (88.9°F). September nights in Ca Mau witness a slight temperature decrease, averaging at a warm 25.9°C (78.6°F).

Heat index

September's heat index is appraised at a fiery hot 39°C (102.2°F). Incorporate additional preventive steps, heat exhaustion and heat cramps are possible. Long-lasting activity may cause heatstroke.
In the scope of the heat index, its values resonate with shade and light wind conditions. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a composite of temperature and humidity figures to convey how warm it feels. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

In September, the average relative humidity in Ca Mau is 77%.

Rainfall

In Ca Mau, during September, the rain falls for 20.9 days and regularly aggregates up to 89mm (3.5") of precipitation. In Ca Mau, during the entire year, the rain falls for 238.6 days and collects up to 889mm (35") of precipitation.

Daylight

The average length of the day in September is 12h and 10min.
On the first day of the month, sunrise is at 05:50 and sunset at 18:08. On the last day of September, in Ca Mau, sunrise is at 05:47 and sunset at 17:50 +07.

Sunshine

In Ca Mau, the average sunshine in September is 8.3h.

UV index

The months with the highest UV index in Ca Mau are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: The UV index of 7 in September translates into these instructions:
Take precautions against overexposure. Protection against sun damage is needed. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun.