Climate averages 1991–2020
Pekalongan weather
in December.
A hot, very wet month: the joint 9th warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a hot month in Pekalongan: daytime highs average 28.5°C and nights cool to about 24.0°C. By daytime temperature it is the joint 9th warmest of the 12 months.
Expect about 517 mm of rain on roughly 30 days, which makes December a very wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 12 h 31 min on an average December day.
The nearest other city in this atlas is Kedungwuni (10 km away). In December its highs average 28.8°C, about as warm as Pekalongan, with 517 mm of rain.
Among the 200 cities listed in Indonesia, Pekalongan ranks joint 113th of 200 for the warmest December highs and joint 197th of 200 for the driest December (rainfall, lowest first). The mean December high of those 200 cities is 28.4°C; Pekalongan is 0.1°C warmer than that mean.
From December to January, average highs fall by 0.5°C to 28.0°C, and monthly rainfall falls from 517 mm to 410 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
Pekalongan climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.0°C23.7°C | 23.7°C | 410 | 30.4 | 12.512 h |
| February | 28.0°C23.7°C | 23.7°C | 384 | 27.8 | 12.312 h |
| March | 28.5°C23.9°C | 23.9°C | 414 | 30.2 | 12.112 h |
| April | 28.9°C24.1°C | 24.1°C | 377 | 28.4 | 12.012 h |
| May | 29.2°C24.0°C | 24.0°C | 202 | 23.3 | 11.812 h |
| June | 29.0°C23.5°C | 23.5°C | 148 | 17.2 | 11.712 h |
| July | 29.1°C23.0°C | 23.0°C | 103 | 14.4 | 11.812 h |
| August | 29.8°C22.9°C | 22.9°C | 76 | 11.8 | 11.912 h |
| September | 30.6°C23.6°C | 23.6°C | 123 | 14.8 | 12.112 h |
| October | 30.4°C24.2°C | 24.2°C | 293 | 22.7 | 12.312 h |
| November | 29.1°C24.2°C | 24.2°C | 465 | 28.3 | 12.412 h |
| December, selected | 28.5°C24.0°C | 24.0°C | 517 | 29.6 | 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
December in nearby cities
- Kedungwuni in DecemberIndonesia · 10 kmHigh 28.8°C · Low 23.6°C · 517 mm rain
- Pemalang in DecemberIndonesia · 32 kmHigh 28.9°C · Low 24.1°C · 461 mm rain
- Tarub in DecemberIndonesia · 56 kmHigh 28.9°C · Low 24.5°C · 459 mm rain
- Wonosobo in DecemberIndonesia · 58 kmHigh 25.4°C · Low 20.1°C · 547 mm rain
- Tegal in DecemberIndonesia · 59 kmHigh 29.0°C · Low 24.6°C · 343 mm rain
- Purwokerto in DecemberIndonesia · 77 kmHigh 28.8°C · Low 23.5°C · 390 mm rain
- Semarang in DecemberIndonesia · 83 kmHigh 28.4°C · Low 23.5°C · 416 mm rain
- Ungaran in DecemberIndonesia · 85 kmHigh 27.3°C · Low 21.6°C · 467 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 Pekalongan) is explained once on the Pekalongan year overview and on the Sources, method and limits page.
Kedungwuni lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.