September weather forecast
Seria, Brunei

The weather in Seria in September shifts towards wetter conditions compared to August. Although rainfall amounts increase, wind conditions remain relatively stable. While daylight hours contract, sunshine hours rise, contributing to maintaining the warmth in the city. Encouragingly, the temperature averages prevail, ensuring no drastic weather change. Heading into October, noticeable increment in precipitation is anticipated.

Temperature

A negligible change is observed in Seria's average high-temperature at the start of September, equating it to August's temperature. Seria experiences an average nighttime temperature of 25.5°C (77.9°F) in the month of September.

Heat index

September's average heat index is appraised at a blisteringly hot 40°C (104°F). Implement additional preventive actions, heat cramps and heat exhaustion are potential hazards. Heatstroke could follow prolonged activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', provides an understanding of perceived warmth by combining temperature and relative humidity. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
The physiological response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. When relative humidity increases, the body's capacity to evaporate heat decreases, leading to a heightened sense of warmth. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

In Seria, the average relative humidity in September is 76%.

Rainfall

The month with the least rainfall is September, when the rain falls for 22.5 days and typically collects 79mm (3.11") of precipitation.

Daylight

In Seria, the average length of the day in September is 12h and 8min.
On the first day of the month, sunrise is at 06:16 and sunset at 18:28. On the last day of September, sunrise is at 06:10 and sunset at 18:15 +08.

Sunshine

September has the most sunshine of the year in Seria, with an average of 9h of sunshine.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index in Seria, Brunei. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for average individuals.
Note: The UV index of 7 in September translates into these instructions:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Tightly woven clothing, when worn loosely, shields effectively against the Sun.