Climate averages 1991–2020
Lumajang weather
in December.
A hot, very wet month: the joint 5th warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a hot month in Lumajang: daytime highs average 29.1°C and nights cool to about 23.8°C. By daytime temperature it is the joint 5th warmest of the 12 months.
Expect about 316 mm of rain on roughly 27 days, which makes December a very wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 35 min on an average December day.
The nearest other city in this atlas is Probolinggo (42 km away). In December its highs average 28.8°C, about as warm as Lumajang, with 255 mm of rain.
Among the 200 cities listed in Indonesia, Lumajang ranks joint 59th of 200 for the warmest December highs and joint 85th of 200 for the driest December (rainfall, lowest first). The mean December high of those 200 cities is 28.4°C; Lumajang is 0.7°C warmer than that mean.
From December to January, average highs fall by 0.1°C to 29.0°C, and monthly rainfall rises from 316 mm to 357 mm.
The annual picture
December 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
Lumajang climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.0°C23.8°C | 23.8°C | 357 | 28.7 | 12.513 h |
| February | 29.1°C23.7°C | 23.7°C | 352 | 26.8 | 12.412 h |
| March | 29.4°C23.9°C | 23.9°C | 283 | 26.8 | 12.212 h |
| April | 29.4°C23.9°C | 23.9°C | 163 | 23.0 | 11.912 h |
| May | 29.0°C23.4°C | 23.4°C | 92 | 15.6 | 11.712 h |
| June | 28.3°C22.6°C | 22.6°C | 62 | 12.7 | 11.712 h |
| July | 27.6°C21.6°C | 21.6°C | 44 | 11.3 | 11.712 h |
| August | 27.9°C21.2°C | 21.2°C | 35 | 10.4 | 11.812 h |
| September | 29.0°C21.7°C | 21.7°C | 67 | 12.1 | 12.112 h |
| October | 29.9°C22.9°C | 22.9°C | 96 | 16.8 | 12.312 h |
| November | 29.6°C23.7°C | 23.7°C | 227 | 23.5 | 12.512 h |
| December, selected | 29.1°C23.8°C | 23.8°C | 316 | 27.0 | 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
December in nearby cities
- Probolinggo in DecemberIndonesia · 42 kmHigh 28.8°C · Low 24.9°C · 255 mm rain
- Jember in DecemberIndonesia · 52 kmHigh 28.4°C · Low 22.8°C · 338 mm rain
- Pasuruan in DecemberIndonesia · 65 kmHigh 29.1°C · Low 23.3°C · 321 mm rain
- Lawang in DecemberIndonesia · 67 kmHigh 27.9°C · Low 21.6°C · 420 mm rain
- Singosari in DecemberIndonesia · 67 kmHigh 27.6°C · Low 21.6°C · 345 mm rain
- Malang in DecemberIndonesia · 68 kmHigh 27.3°C · Low 21.6°C · 345 mm rain
- Bangil in DecemberIndonesia · 74 kmHigh 29.6°C · Low 23.1°C · 253 mm rain
- Batu in DecemberIndonesia · 82 kmHigh 25.8°C · Low 20.1°C · 436 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 Lumajang) is explained once on the Lumajang year overview and on the Sources, method and limits page.