Weather in Iloilo in August
Philippines · 20-year averages, August
Shoulder season. August is shoulder season in Iloilo — cheaper, quieter, and a genuine gamble. You should expect rain on 26 days of the month, which is more days wet than dry.
August ranks 6 of 12 in Iloilo: past the worst of the year but short of February, which is the month to book if the dates are open.
Rain on 26 of the month's 31 days, 12 of them heavy. At that frequency a wet-weather backup is not a contingency, it is the itinerary — book the indoor things first and treat the clear days as the bonus. Natural fibres and a second shirt for the day. At 85% nothing dries, including you.
What the averages hide
Averages flatten a month, and this one hides a few things: the day barely swings — 1.8 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest August day reached 30.8 °C and the coldest night fell to 24.8 °C, and the wettest single day dropped 94 mm — roughly 30% of the month's rain in one day.
August is statistically steady but not small: the year-to-year variation is modest in relative terms, yet the wettest August on record still delivered 489 mm against 111 mm in the driest. In a month this wet, even a tame spread is a lot of rain in absolute terms — the 317 mm average is a reasonable planning figure, not a promise.
Wind is light at 14 km/h, so the temperature on the page is close to the temperature on your skin, and humidity at 85% is the real story though — it is the number that decides how the day feels, not the 28.5 °C.
How August sits in the year
Temperatures hold steady either side: 28.7 °C in July, 28.5 here, 28.6 in September. Nothing about the timing within the month matters much.
Daylight in August
Iloilo sits close enough to the equator that daylight barely moves all year — 12.5 hours in August, against a range of just 1.2 hours across the whole calendar. Sunrise and sunset land at roughly the same time whenever you come.
An inland climate
Despite being inland, the year stays fairly even: 7.3 °C between the year's warmest afternoons and coldest nights.
How busy it gets
Shoulder. The value months — prices ease off and you get the place closer to itself.
Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.
August in Iloilo versus nearby
If Iloilo is one option among several, the nearby comparison is worth making. Cebu City is close enough to be a coin toss — within a degree on temperature, 3 days less rain. Cagayan de Oro is close enough to be a coin toss — within a degree on temperature, 2 days less rain.
So: August works, with February the better month by 13 points if the dates can move. If they cannot, nothing here should stop you booking.
Every month in Iloilo
| Month | High °C | Low °C | Rain days | Rain mm | Humidity % | Daylight h | Score |
|---|---|---|---|---|---|---|---|
| January | 28.6 | 25 | 16 | 95 | 84 | 11.6 | 61 |
| February | 29.3 | 24.9 | 12 | 68 | 81 | 11.8 | 67 |
| March | 30.7 | 25.5 | 11 | 60 | 77 | 12.1 | 64 |
| April | 32.2 | 26.8 | 10 | 60 | 73 | 12.4 | 58 |
| May | 31.4 | 27.6 | 20 | 175 | 76 | 12.6 | 45 |
| June | 29.6 | 27.2 | 27 | 298 | 81 | 12.7 | 52 |
| July | 28.7 | 26.8 | 28 | 344 | 84 | 12.7 | 54 |
| August | 28.5 | 26.7 | 26 | 317 | 85 | 12.5 | 54 |
| September | 28.6 | 26.7 | 26 | 279 | 85 | 12.2 | 53 |
| October | 29 | 26.7 | 26 | 277 | 84 | 11.9 | 52 |
| November | 29.2 | 26.5 | 23 | 165 | 85 | 11.6 | 51 |
| December | 28.9 | 25.9 | 22 | 175 | 86 | 11.5 | 51 |
See all twelve months in Iloilo, or where else to go in August.
Planning the rest of the trip
- Flight time to Iloilo how long you are actually in the air
- Iloilo time zone and the difference from home
- Days until your trip count down to the departure date