Climate averages 1991–2020
Kebomas weather
in September.
A hot, fairly dry month: one of the warmest and the 2nd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Kebomas: daytime highs average 32.5°C and nights cool to about 23.5°C. By daytime temperature it is one of the warmest months of the year.
Expect about 20 mm of rain on roughly 3 days, which makes September a fairly dry month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 04 min on an average September day.
The nearest other city in this atlas is Surabaya (16 km away). In September its highs average 32.9°C, about as warm as Kebomas, with 20 mm of rain.
Among the 200 cities listed in Indonesia, Kebomas ranks joint 17th of 200 for the warmest September highs and joint 18th of 200 for the driest September (rainfall, lowest first). The mean September high of those 200 cities is 30.1°C; Kebomas is 2.4°C warmer than that mean.
From September to October, average highs stay level at 32.5°C, and monthly rainfall rises from 20 mm to 73 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
Kebomas climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.1°C24.2°C | 24.2°C | 280 | 29.4 | 12.512 h |
| February | 29.1°C24.1°C | 24.1°C | 262 | 27.3 | 12.312 h |
| March | 29.5°C24.3°C | 24.3°C | 268 | 28.9 | 12.112 h |
| April | 29.8°C24.5°C | 24.5°C | 186 | 23.9 | 12.012 h |
| May | 30.2°C24.3°C | 24.3°C | 86 | 14.5 | 11.812 h |
| June | 30.0°C23.6°C | 23.6°C | 49 | 9.0 | 11.712 h |
| July | 30.2°C22.8°C | 22.8°C | 22 | 4.5 | 11.712 h |
| August | 31.2°C22.8°C | 22.8°C | 6.4 | 1.5 | 11.912 h |
| September, selected | 32.5°C23.5°C | 23.5°C | 20 | 3.3 | 12.112 h |
| October | 32.5°C24.4°C | 24.4°C | 73 | 12.5 | 12.312 h |
| November | 31.0°C24.8°C | 24.8°C | 179 | 24.1 | 12.412 h |
| December | 29.6°C24.4°C | 24.4°C | 274 | 28.7 | 12.513 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
- Surabaya in SeptemberIndonesia · 16 kmHigh 32.9°C · Low 24.5°C · 20 mm rain
- Bangkalan in SeptemberIndonesia · 18 kmHigh 31.6°C · Low 25.1°C · 20 mm rain
- Sidoarjo in SeptemberIndonesia · 33 kmHigh 33.3°C · Low 23.1°C · 11 mm rain
- Mojokerto in SeptemberIndonesia · 40 kmHigh 34.0°C · Low 22.3°C · 31 mm rain
- Bangil in SeptemberIndonesia · 52 kmHigh 33.0°C · Low 22.3°C · 11 mm rain
- Jombang in SeptemberIndonesia · 61 kmHigh 32.8°C · Low 22.1°C · 23 mm rain
- Pasuruan in SeptemberIndonesia · 61 kmHigh 31.9°C · Low 22.8°C · 10 mm rain
- Tuban in SeptemberIndonesia · 69 kmHigh 31.4°C · Low 24.3°C · 26 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 Kebomas) is explained once on the Kebomas year overview and on the Sources, method and limits page.
Surabaya lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.