Climate averages 1991–2020
Batu weather
in September.
A hot, moderately wet month: one of the warmest and the 3rd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Batu: daytime highs average 28.4°C and nights cool to about 18.5°C. By daytime temperature it is one of the warmest months of the year.
Expect about 56 mm of rain on roughly 8 days, which makes September a moderately wet month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 03 min on an average September day.
The nearest other city in this atlas is Singosari (15 km away). In September its highs average 30.5°C, 2.2°C warmer than Batu, with 43 mm of rain.
Among the 200 cities listed in Indonesia, Batu ranks joint 161st of 200 for the warmest September highs and 74th of 200 for the driest September (rainfall, lowest first). The mean September high of those 200 cities is 30.1°C; Batu is 1.7°C cooler than that mean.
From September to October, average highs stay level at 28.4°C, and monthly rainfall rises from 56 mm to 152 mm.
The annual picture
September 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
Batu climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 25.7°C20.1°C | 20.1°C | 509 | 29.7 | 12.513 h |
| February | 25.8°C20.0°C | 20.0°C | 498 | 27.8 | 12.412 h |
| March | 26.0°C20.0°C | 20.0°C | 464 | 28.9 | 12.212 h |
| April | 26.2°C20.0°C | 20.0°C | 295 | 25.5 | 11.912 h |
| May | 26.6°C19.4°C | 19.4°C | 138 | 18.5 | 11.812 h |
| June | 26.5°C18.7°C | 18.7°C | 72 | 12.8 | 11.712 h |
| July | 26.6°C17.8°C | 17.8°C | 51 | 9.8 | 11.712 h |
| August | 27.3°C17.6°C | 17.6°C | 37 | 7.4 | 11.912 h |
| September, selected | 28.4°C18.5°C | 18.5°C | 56 | 8.1 | 12.112 h |
| October | 28.4°C19.5°C | 19.5°C | 152 | 15.4 | 12.312 h |
| November | 27.0°C20.2°C | 20.2°C | 326 | 23.3 | 12.512 h |
| December | 25.8°C20.1°C | 20.1°C | 436 | 28.4 | 12.613 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
September in nearby cities
- Singosari in SeptemberIndonesia · 15 kmHigh 30.5°C · Low 20.1°C · 43 mm rain
- Malang in SeptemberIndonesia · 17 kmHigh 29.4°C · Low 19.9°C · 43 mm rain
- Lawang in SeptemberIndonesia · 19 kmHigh 31.0°C · Low 20.0°C · 21 mm rain
- Pare in SeptemberIndonesia · 38 kmHigh 30.7°C · Low 20.8°C · 65 mm rain
- Bangil in SeptemberIndonesia · 44 kmHigh 33.0°C · Low 22.3°C · 11 mm rain
- Mojokerto in SeptemberIndonesia · 46 kmHigh 34.0°C · Low 22.3°C · 31 mm rain
- Blitar in SeptemberIndonesia · 47 kmHigh 29.4°C · Low 20.5°C · 57 mm rain
- Jombang in SeptemberIndonesia · 49 kmHigh 32.8°C · Low 22.1°C · 23 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 Batu) is explained once on the Batu year overview and on the Sources, method and limits page.