Climate averages 1991–2020
Pematangsiantar weather
in April.
A warm, very wet month: the joint 4th warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
April is a warm month in Pematangsiantar: daytime highs average 27.9°C and nights cool to about 21.0°C. By daytime temperature it is the joint 4th warmest of the 12 months.
Expect about 249 mm of rain on roughly 29 days, which makes April a very wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 11 min on an average April day.
The nearest other city in this atlas is Tebingtinggi (42 km away). In April its highs average 29.9°C, 1.9°C warmer than Pematangsiantar, with 183 mm of rain.
Among the 200 cities listed in Indonesia, Pematangsiantar ranks joint 173rd of 200 for the warmest April highs and joint 104th of 200 for the driest April (rainfall, lowest first). The mean April high of those 200 cities is 29.0°C; Pematangsiantar is 1.1°C cooler than that mean.
From April to May, average highs rise by 0.3°C to 28.2°C, and monthly rainfall rises from 249 mm to 265 mm.
The annual picture
April in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Pematangsiantar climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 26.6°C20.2°C | 20.2°C | 240 | 27.9 | 12.012 h |
| February | 27.1°C20.2°C | 20.2°C | 190 | 24.3 | 12.012 h |
| March | 27.8°C20.7°C | 20.7°C | 217 | 26.4 | 12.112 h |
| April, selected | 27.9°C21.0°C | 21.0°C | 249 | 28.6 | 12.212 h |
| May | 28.2°C21.3°C | 21.3°C | 265 | 29.2 | 12.312 h |
| June | 28.3°C21.1°C | 21.1°C | 231 | 27.1 | 12.312 h |
| July | 28.1°C20.8°C | 20.8°C | 236 | 26.7 | 12.312 h |
| August | 27.9°C20.7°C | 20.7°C | 274 | 28.7 | 12.212 h |
| September | 27.5°C20.6°C | 20.6°C | 361 | 29.4 | 12.112 h |
| October | 27.1°C20.6°C | 20.6°C | 375 | 30.2 | 12.112 h |
| November | 26.6°C20.6°C | 20.6°C | 351 | 29.4 | 12.012 h |
| December | 26.3°C20.5°C | 20.5°C | 315 | 29.6 | 12.012 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
April in nearby cities
- Tebingtinggi in AprilIndonesia · 42 kmHigh 29.9°C · Low 23.8°C · 183 mm rain
- Kisaran in AprilIndonesia · 61 kmHigh 30.1°C · Low 23.8°C · 233 mm rain
- Kabanjahe in AprilIndonesia · 66 kmHigh 25.2°C · Low 17.7°C · 230 mm rain
- Perbaungan in AprilIndonesia · 69 kmHigh 29.8°C · Low 24.3°C · 195 mm rain
- Percut in AprilIndonesia · 77 kmHigh 29.9°C · Low 23.7°C · 229 mm rain
- Tanjungbalai in AprilIndonesia · 81 kmHigh 29.9°C · Low 24.8°C · 233 mm rain
- Medan in AprilIndonesia · 82 kmHigh 30.1°C · Low 22.9°C · 243 mm rain
- Sunggal in AprilIndonesia · 85 kmHigh 30.0°C · Low 22.5°C · 252 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Pematangsiantar) is explained once on the Pematangsiantar year overview and on the Sources, method and limits page.