Climate averages 1991–2020
Surabaya weather
in October.
A hot, moderately wet month: one of the warmest and the 5th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
October is a hot month in Surabaya: daytime highs average 32.9°C and nights cool to about 25.3°C. By daytime temperature it is one of the warmest months of the year.
Expect about 73 mm of rain on roughly 13 days, which makes October a moderately wet month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 16 min on an average October day.
The nearest other city in this atlas is Kebomas (16 km away). In October its highs average 32.5°C, about as warm as Surabaya, with 73 mm of rain.
Among the 200 cities listed in Indonesia, Surabaya ranks joint 9th of 200 for the warmest October highs and joint 26th of 200 for the driest October (rainfall, lowest first). The mean October high of those 200 cities is 30.1°C; Surabaya is 2.8°C warmer than that mean.
From October to November, average highs fall by 1.6°C to 31.3°C, and monthly rainfall rises from 73 mm to 179 mm.
The annual picture
October 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
Surabaya climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.3°C24.8°C | 24.8°C | 280 | 29.4 | 12.512 h |
| February | 29.3°C24.8°C | 24.8°C | 262 | 27.3 | 12.312 h |
| March | 29.8°C25.0°C | 25.0°C | 268 | 28.9 | 12.112 h |
| April | 30.1°C25.1°C | 25.1°C | 186 | 23.9 | 11.912 h |
| May | 30.5°C25.1°C | 25.1°C | 86 | 14.5 | 11.812 h |
| June | 30.4°C24.5°C | 24.5°C | 49 | 9.0 | 11.712 h |
| July | 30.6°C23.9°C | 23.9°C | 22 | 4.5 | 11.712 h |
| August | 31.5°C23.9°C | 23.9°C | 6.4 | 1.5 | 11.912 h |
| September | 32.9°C24.5°C | 24.5°C | 20 | 3.3 | 12.112 h |
| October, selected | 32.9°C25.3°C | 25.3°C | 73 | 12.5 | 12.312 h |
| November | 31.3°C25.5°C | 25.5°C | 179 | 24.1 | 12.412 h |
| December | 29.9°C25.1°C | 25.1°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
October in nearby cities
- Kebomas in OctoberIndonesia · 16 kmHigh 32.5°C · Low 24.4°C · 73 mm rain
- Sidoarjo in OctoberIndonesia · 22 kmHigh 33.6°C · Low 24.0°C · 38 mm rain
- Bangkalan in OctoberIndonesia · 23 kmHigh 31.6°C · Low 25.7°C · 75 mm rain
- Bangil in OctoberIndonesia · 40 kmHigh 33.2°C · Low 23.2°C · 38 mm rain
- Mojokerto in OctoberIndonesia · 42 kmHigh 33.9°C · Low 23.2°C · 110 mm rain
- Pasuruan in OctoberIndonesia · 47 kmHigh 32.2°C · Low 23.6°C · 33 mm rain
- Lawang in OctoberIndonesia · 65 kmHigh 31.0°C · Low 21.2°C · 70 mm rain
- Jombang in OctoberIndonesia · 66 kmHigh 32.9°C · Low 23.0°C · 86 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 Surabaya) is explained once on the Surabaya year overview and on the Sources, method and limits page.
Kebomas lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.