Historical weather data, all-time temperature records, and monthly climate averages for Pekanbaru, Riau, Indonesia. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4th is almost certain to be a wet one in Pekanbaru — 66 years of data put the chance of precipitation at 95%, making it one of the most reliably rainy dates of the year. Expect temperatures in the mid-70s overnight climbing to the mid-80s by afternoon, though last year pushed to a scorching 91°.
Pekanbaru runs hot and wet year-round, but its extremes are notable even by equatorial standards — the mercury has reached 97° as recently as July 2025, while a single January day in 2006 dropped 6.31 inches of rain. The coolest temperature on record, 66° in October 1979, is practically a cold snap for this part of Sumatra.
Pekanbaru's climate is strikingly consistent, with average highs ranging only from 84° in January to 87° in the warmer months — essentially warm all year. The peak of the wet season hits late October through early November, averaging over 2.5 inches per week, so plan accordingly if you're visiting then.