Weather in Pekanbaru in July

Indonesia · 20-year averages, July

A hard month. July asks something of you. Go in knowing what. The heat itself is manageable at 29.2 °C, but 90% humidity is what you will actually feel.

Pekanbaru barely has seasons. July scores 46 out of 100 against a best of 47 in January — a gap small enough that the month you choose matters far less here than the week you choose.

Rain on 19 days, 5 of them heavy. Enough to need a plan B, not enough to need a plan around it. Natural fibres and a second shirt for the day. At 90% nothing dries, including you.

What the averages hide

Averages flatten a month, and this one hides a few things: 7 days top 30 °C — hot spells arrive, but they break; the day barely swings — 5.7 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest July day reached 31.1 °C and the coldest night fell to 20.8 °C, and the wettest single day dropped 71 mm — roughly 43% of the month's rain in one day.

July is moderately variable: 47 mm in the driest year against 359 mm in the wettest, around an average of 164 mm. Roughly two Julys in three land near that average, and the third does something else entirely.

Wind is light at 0.6 km/h, so the temperature on the page is close to the temperature on your skin, and humidity at 90% is the real story though — it is the number that decides how the day feels, not the 29.2 °C.

How July sits in the year

Temperatures hold steady either side: 29.2 °C in June, 29.2 here, 29.5 in August. Nothing about the timing within the month matters much.

Daylight in July

Pekanbaru sits close enough to the equator that daylight barely moves all year — 12.1 hours in July, against a range of just 0.1 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: 6.4 °C between the year's warmest afternoons and coldest nights.

How busy it gets

Peak season. Expect the highest prices of the year and to be booking well ahead. If the dates are flexible, February is the trade worth considering — 2 points weaker on weather, and materially quieter.

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

July in Pekanbaru versus nearby

If Pekanbaru is one option among several, the nearby comparison is worth making. Padang is close enough to be a coin toss — within a degree on temperature, the same number of rain days. Singapore is close enough to be a coin toss — within a degree on temperature, 4 days more rain.

So: July is effectively as good as it gets here — 1 points behind January, which is inside the margin where the weather stops being the deciding factor and price starts being it.

Every month in Pekanbaru

MonthHigh °CLow °CRain daysRain mmHumidity %Daylight hScore
January2923.3 222239012.147
February29.623.5 181628912.145
March29.723.8 242719012.144
April29.624.2 262889112.143
May29.624.3 222139112.143
June29.223.7 171699112.246
July29.223.5 191649012.146
August29.523.5 191858912.146
September29.523.5 222359012.145
October29.523.7 252929012.145
November29.123.8 283519112.146
December28.723.5 253079212.147

See all twelve months in Pekanbaru, or where else to go in July.

Planning the rest of the trip

Built and maintained by Amit Sharma, Auckland, New Zealand. I build these sites so the answer is free and the data is public.

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