Pematangsiantar sits on Sumatra, close enough to the equator that rainfall is distributed fairly evenly throughout the year, though a somewhat wetter period typically runs from October through January.
In North Sumatra’s highlands, the city’s elevated terrain produces a cooler climate but still receives substantial year-round rainfall. Because rain is a near-constant feature of the climate here, flooding is often driven less by a single dramatic storm season and more by cumulative rainfall combined with deforestation and peatland drainage changes, and radar remains useful for identifying the more intense rain bands within this generally wet pattern. Learn more: Flash Flood Warning Signs on Radar · Open the full Rain Map
Frequently Asked Questions
Is it raining in Pematangsiantar right now?
The live radar map above shows precipitation over Pematangsiantar, North Sumatra in real time. Blue shades indicate light rain, while yellow, orange, and red mark heavier downpours. If no colored echoes appear over Pematangsiantar, no significant rain is currently being detected.
How often does the Pematangsiantar rain radar update?
The radar refreshes continuously, typically every few minutes, so the map reflects current conditions rather than an hours-old forecast. Press play to animate the most recent frames.
Can I see if a storm is heading toward Pematangsiantar?
Yes. Press play on the radar to animate the last few hours of rainfall and watch which way rain cells over North Sumatra are moving – the clearest way to judge whether a shower will reach Pematangsiantar or pass by.
Is this Pematangsiantar rain radar free to use?
Yes, completely free – no account, app download, or sign-up required. It works in any browser on desktop and mobile.