September weather forecastTiwi, Philippines
September
Weather in September
September, the first month of the autumn in Tiwi, is still a warm month, with temperature in the range of an average high of 29.7°C (85.5°F) and an average low of 24.7°C (76.5°F).Temperature
With the transition into September, Tiwi notes an average high-temperature of a still moderately hot 29.7°C (85.5°F), closely resembling August. Throughout September, a modest shift from daytime highs is anticipated in Tiwi, Philippines, with an average low-temperature of 24.7°C (76.5°F).Heat index
The heat index value for September is evaluated at a sweltering 38°C (100.4°F). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.When assessing, remember that heat index measurements are for light winds and shaded spots. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', blends air temperature and moisture content to represent the felt temperature to humans. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly relevant to babies and toddlers. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
The evaporation of sweat is a natural cooling mechanism of the human body, facilitated by perspiration. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. When body temperature rises due to an imbalance in heat gain, there's a potential for dehydration and overheating.
Humidity
The average relative humidity in September is 83%.Rainfall
In September, the rain falls for 17.6 days. Throughout September, 33mm (1.3") of precipitation is accumulated. In Tiwi, Philippines, during the entire year, the rain falls for 221.5 days and collects up to 731mm (28.78") of precipitation.Sea temperature
In September, the average sea temperature is 29.1°C (84.4°F).Note: Water temperatures from 25°C (77°F) to 29°C (84.2°F) make swimming, diving, and similar activities highly pleasurable and enjoyable for long periods without discomfort.
Daylight
In September, the average length of the day in Tiwi, Philippines, is 12h and 13min.On the first day of September, sunrise is at 5:34 am and sunset at 5:56 pm. On the last day of the month, sunrise is at 5:34 am and sunset at 5:36 pm PST.
Sunshine
In September, the average sunshine in Tiwi is 7.8h.UV index
February through September, with an average maximum UV index of 7, are months with the highest UV index in Tiwi, Philippines. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the average person.Note: In September, a daily UV index of 7 turns into the following recommendations:
Inhibit overexposure. Warding off sun damage is of utmost importance. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Attention! The combination of sand and water reflections enhances UV ray intensity.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Tiwi, Philippines
- Average high temperature in September: 29.7°C
The warmest month (with the highest average high temperature) is May (30.8°C).
The month with the lowest average high temperature is January (26.8°C).
- Average low temperature in September: 24.7°C
The month with the highest average low temperature is June (25.6°C).
The coldest month (with the lowest average low temperature) is February (22.9°C).
Average pressure in September
Tiwi, Philippines
- Average pressure in September: 1008mbar
The month with the highest atmospheric pressure is February (1013.1mbar).
The month with the lowest atmospheric pressure is August (1007.5mbar).
Average wind speed in September
Tiwi, Philippines
- Average wind speed in September: 8.8km/h
The windiest month (with the highest average wind speed) is January (13.9km/h).
The calmest month (with the lowest average wind speed) is May (7.9km/h).
Average humidity in September
Tiwi, Philippines
- Average humidity in September: 83%
The months with the highest relative humidity are January and December (85%).
The month with the lowest relative humidity is May (80%).
Average rainfall in September
Tiwi, Philippines
- Average rainfall in September: 33mm
The wettest month (with the highest rainfall) is December (153mm).
The driest month (with the least rainfall) is April (23mm).
Average rainfall days in September
Tiwi, Philippines
- Average rainfall days in September: 17.6 days
The month with the highest number of rainy days is December (24.5 days).
The month with the least rainy days is April (13.5 days).
Average sea temperature in September
Tiwi, Philippines
- Average sea temperature in September: 29.1°C
The best month for swimming (with the highest average sea temperature) is June (29.8°C).
The coldest month (with the lowest average sea temperature) is February (26.8°C).
Average daylight in September /
Average sunshine in September
Tiwi, Philippines
- Average daylight in September: 12h and 12min
The month with the longest days is June (Average daylight: 12h and 54min).
The month with the shortest days is December (Average daylight: 11h and 24min).
- Average sunshine in September: 7h and 48min
The month with the most sunshine is May (Average sunshine: 10h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in September
Tiwi, Philippines
- Average sunshine days in September: 9.8 days
The month with the most sunshine days is August (12.4 days).
The month with the least sunshine days is January (2.4 days).
Average UV index in September
Tiwi, Philippines
- Average UV index in September: 7
The months with the highest UV index are February, March, April, May, June, July, August and September (UV index 7).
The months with the lowest UV index are January, October, November and December (UV index 6).
Average cloud cover in September
Tiwi, Philippines
- Average cloud cover in September: 43
The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is May (Cloud cover 32).
Average visibility in September
Tiwi, Philippines
- Average visibility in September: 10km
The months with the highest visibility are February, March, April, May, June, July, August and September (10km).
The months with the lowest visibility are January, October, November and December (9km).





