September weather forecast
Iloilo City, Philippines

englishespañol中文
Share

Weather in September

Throughout September, Iloilo City persists in its umbrella weather with sustained showers. Rainfall begins to decrease, yet remains relatively high at 124mm (4.88"), showcasing the last throes of the monsoon season. Even though the temperatures remain comfortable, oscillating from 25.6°C (78.1°F) to 29.2°C (84.6°F), the humidity stays put at 80%. September sees further strengthening of wind speed, necessitating cautionary measures. Overall, this month marks the slow departure of the rainy season, setting the stage for the approaching dry months.

Temperature

The arrival of September in Iloilo City denotes a barely perceptible change in the average high-temperatures to a still moderately hot 29.2°C (84.6°F) from August's 29.4°C (84.9°F). Iloilo City's nighttime average temperature in September subtly descends to a still moderately hot 25.6°C (78.1°F) from the daily highs.

Heat index

The heat index in September is calculated to be a very hot 35°C (95°F). Exercise extra preventive actions, heat cramps and heat exhaustion are plausible. Continuous activity could result in heatstroke.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', integrates the air's temperature and its humidity to showcase the felt temperature by people. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
One of the main methods the human body employs to cool down is by perspiring, as this process allows sweat to evaporate and remove excess heat. Under high air temperature coupled with high humidity (high heat index), the body's perspiration is reduced, intensifying the sensation of heat. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

The average relative humidity in September is 80%.

Rainfall

In Iloilo City, in September, during 23.9 rainfall days, 124mm (4.88") of precipitation is typically accumulated. Throughout the year, there are 211.9 rainfall days, and 959mm (37.76") of precipitation is accumulated.

Sea temperature

In Iloilo City, the average seawater temperature in September is 28.9°C (84°F).
Note: For engaging in any water activities, temperatures from 25°C (77°F) to 29°C (84.2°F) are viewed as outstanding and exceptionally pleasing for prolonged durations.

Daylight

In September, the average length of the day in Iloilo City is 12h and 11min.
On the first day of the month, sunrise is at 5:40 am and sunset at 5:59 pm. On the last day of September, in Iloilo City, sunrise is at 5:38 am and sunset at 5:40 pm PST.

Sunshine

In Iloilo City, the average sunshine in September is 8h.

UV index

The months with the highest UV index in Iloilo City, Philippines, are January through December, with an average maximum UV index of 7. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: A daily maximum UV index of 7 in September translates into the following instructions:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Opt for tightly woven and loose clothing to enhance protection from the Sun. Beware! Reflecting off water and sand, UV rays are much stronger.
[Resources]

Frequently asked questions

Is it hot in Iloilo City during September?

In Iloilo City, in September, the average high-temperature is 29.2°C (84.6°F), and the average low-temperature is 25.6°C (78.1°F). In September, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines relative humidity and air temperature, is calculated to be 35°C (95°F).

What is the average humidity in September in Iloilo City?

The average relative humidity in September in Iloilo City is 80%.

How many days does it rain in September in Iloilo City?

In Iloilo City, in September, during 23.9 rainfall days, 124mm (4.88") of precipitation is typically accumulated.

How warm is the water in September in Iloilo City?

In Iloilo City, Philippines, in September, the average water temperature is 28.9°C (84°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

What is the average length of the day in September in Iloilo City?

In Iloilo City, the average day length in September is 12h and 11min.

When are sunrise and sunset in September in Iloilo City?

On the first day of September in Iloilo City, Philippines, sunrise is at 5:40 am and sunset at 5:59 pm. On the last day of the month, sunrise is at 5:38 am and sunset at 5:40 pm PST.

How many hours of sunshine does Iloilo City have in September?

The average sunshine duration in September in Iloilo City, Philippines, is 8h.

When is the highest UV index in Iloilo City?

January through December, with an average maximum UV index of 7, are months with the highest UV index.

What are the months with the lowest UV index in Iloilo City?

The months with the lowest UV index are January through December, with an average maximum UV index of 7.

What is the UV index intensity in September in Iloilo City?

In Iloilo City, Philippines, the average daily maximum UV index in September is 7. A UV Index value of 6 to 7 symbolizes a high hazard to health from unprotected exposure to UV radiation.

Average temperature in September
Iloilo City, Philippines

Average temperature in September - Iloilo City, Philippines
  • Average high temperature in September: 29.2°C

The warmest month (with the highest average high temperature) is May (31.7°C).
The month with the lowest average high temperature is January (28.2°C).

  • Average low temperature in September: 25.6°C

The month with the highest average low temperature is May (26.6°C).
The coldest month (with the lowest average low temperature) is February (24.2°C).

[Resources]

Average pressure in September
Iloilo City, Philippines

Average pressure in September - Iloilo City, Philippines
  • Average pressure in September: 1009mbar

The month with the highest atmospheric pressure is February (1011.5mbar).
The month with the lowest atmospheric pressure is July (1008.6mbar).

[Resources]

Average wind speed in September
Iloilo City, Philippines

Average wind speed in September - Iloilo City, Philippines
  • Average wind speed in September: 14.4km/h

The windiest month (with the highest average wind speed) is January (24.4km/h).
The calmest month (with the lowest average wind speed) is May (10.1km/h).

[Resources]

Average humidity in September
Iloilo City, Philippines

Average humidity in September - Iloilo City, Philippines
  • Average humidity in September: 80%

The months with the highest relative humidity are January and December (81%).
The months with the lowest relative humidity are April and May (73%).

[Resources]

Average rainfall in September
Iloilo City, Philippines

Average rainfall in September - Iloilo City, Philippines
  • Average rainfall in September: 124mm

The wettest month (with the highest rainfall) is July (159mm).
The driest month (with the least rainfall) is February (20mm).

[Resources]

Average rainfall days in September
Iloilo City, Philippines

Average rainfall days in September - Iloilo City, Philippines
  • Average rainfall days in September: 23.9 days

The month with the highest number of rainy days is August (26 days).
The month with the least rainy days is February (8.1 days).

[Resources]

Average sea temperature in September
Iloilo City, Philippines

Average sea temperature in September - Iloilo City, Philippines
  • Average sea temperature in September: 28.9°C

The best month for swimming (with the highest average sea temperature) is June (29.9°C).
The coldest months (with the lowest average sea temperature) are January and February (26.9°C).

[Resources]

Average daylight in September /
Average sunshine in September
Iloilo City, Philippines

Average daylight in September / Average sunshine in September - Iloilo City, Philippines
  • Average daylight in September: 12h and 1min

The month with the longest days is June (Average daylight: 12h and 42min).
The month with the shortest days is December (Average daylight: 11h and 30min).

  • Average sunshine in September: 8h and 0min

The month with the most sunshine is April (Average sunshine: 11h and 30min).
The month with the least sunshine is January (Average sunshine: 6h and 0min).

[Resources]

Average sunshine days in September
Iloilo City, Philippines

Average sunshine days in September - Iloilo City, Philippines
  • Average sunshine days in September: 4.1 days

The month with the most sunshine days is March (18.7 days).
The month with the least sunshine days is June (2.8 days).

[Resources]

Average UV index in September
Iloilo City, Philippines

Average UV index in September - Iloilo City, Philippines
  • Average UV index in September: 7

The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).

[Resources]

Average cloud cover in September
Iloilo City, Philippines

Average cloud cover in September - Iloilo City, Philippines
  • Average cloud cover in September: 42

The month with the most cloud cover is July (Cloud cover 48).
The month with the least cloud cover is April (Cloud cover 24).

[Resources]

Average visibility in September
Iloilo City, Philippines

Average visibility in September - Iloilo City, Philippines
  • Average visibility in September: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

[Resources]

Iloilo City, Philippines

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location