September weather forecast
Treas, Cambodia

September in Treas, Cambodia sees the weather transitioning once again. Rainfall continues to be frequent, although slight reduction begins to take place. The humidity and cloud coverage also remain relatively high. The number of sunshine hours start to pick up once again, compensating for slightly less rain. The noteworthy element for September is the extremely high rainfall measuring an average of 198mm (7.8") for the month.

Temperature

September's onset brings an average high-temperature of a still hot 31.3°C (88.3°F), showing a minute difference from August's 31.4°C (88.5°F). Throughout September, the temperature tends to fall to a consistent average low of 23.5°C (74.3°F).

Heat index

In September, the heat index is appraised at a blistering 43°C (109.4°F). Beware: Heat exhaustion along with heat cramps are on the cards. Heatstroke could result from sustained physical activity.
Bear in mind that the heat index values are determined for shaded areas and light breezes. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', ties air temperature with relative humidity to produce the perceived temperature sensation. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important 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.
When it comes to cooling down, the human body's primary method is through perspiration, making use of sweat evaporation to eliminate excess heat. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

With an average relative humidity of 84%, September is the most humid month in Treas.

Rainfall

September is the month with the most rainfall in Treas. Rain falls for 28 days and accumulates 198mm (7.8") of precipitation.

Daylight

In September, the average length of the day is 12h and 13min.
On the first day of the month, sunrise is at 05:56 and sunset at 18:19. On the last day of September, sunrise is at 05:57 and sunset at 17:58 +07.

Sunshine

In Treas, the average sunshine in September is 8.5h.

UV index

The months with the highest UV index in Treas are January through June, August through November, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A daily maximum UV index of 7 in September translates into the following instructions:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Employ a wide-brim hat for potent defense against up to 50% of UV rays.