Weather in Kota Kinabalu in October

A hard month. October asks something of you. Go in knowing what. You should expect rain on 27 days of the month, which is more days wet than dry.

Kota Kinabalu barely has seasons. October scores 45 out of 100 against a best of 59 in February — a gap small enough that the month you choose matters far less here than the week you choose.

Rain on 27 of the month's 31 days, 11 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 87% nothing dries, including you.

What the averages hide

Averages flatten a month, and this one hides a few things: 15 days top 30 °C — hot spells arrive, but they break; the day barely swings — 4.2 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest October day reached 32.9 °C and the coldest night fell to 24.1 °C, and the wettest single day dropped 114 mm — roughly 32% of the month's rain in one day.

October is statistically steady but not small: the year-to-year variation is modest in relative terms, yet the wettest October on record still delivered 683 mm against 190 mm in the driest. In a month this wet, even a tame spread is a lot of rain in absolute terms — the 356 mm average is a reasonable planning figure, not a promise.

Wind is light at 5.8 km/h, so the temperature on the page is close to the temperature on your skin, and humidity at 87% is the real story though — it is the number that decides how the day feels, not the 30 °C.

How October sits in the year

Temperatures hold steady either side: 30.1 °C in September, 30 here, 30.2 in November. Nothing about the timing within the month matters much.

Daylight in October

Kota Kinabalu sits close enough to the equator that daylight barely moves all year — 12 hours in October, against a range of just 0.7 hours across the whole calendar. Sunrise and sunset land at roughly the same time whenever you come.

Sea temperature

The sea sits at about 29.3 °C in October — warm enough that the water offers no relief from the heat. The sea peaks at 30 °C in May and bottoms out at 27 °C — water lags the air by a month or two, which is why the best swimming often comes after the best weather.

How busy it gets

Off season. The genuine off season: cheapest by a distance, with the caveat that some tours and restaurants close entirely.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

October in Kota Kinabalu versus nearby

If Kota Kinabalu is one option among several, the nearby comparison is worth making. Sandakan is a better bet in October — within a degree on temperature, 2 days more rain. Zamboanga is a better bet in October — within a degree on temperature, 1 day less rain.

So: October works, with February the better month by 14 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in Kota Kinabalu

See all twelve months in Kota Kinabalu, or where else to go in October.