Climate averages 1991–2020
Merauke weather
in September.
A hot, fairly dry month: the 5th 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 Merauke: daytime highs average 29.3°C and nights cool to about 23.7°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 33 mm of rain on roughly 8 days, which makes September a fairly dry 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 Jayapura (664 km away). In September its highs average 29.5°C, about as warm as Merauke, with 191 mm of rain.
Among the 200 cities listed in Indonesia, Merauke ranks joint 140th of 200 for the warmest September highs and 39th of 200 for the driest September (rainfall, lowest first). The mean September high of those 200 cities is 30.1°C; Merauke is 0.8°C cooler than that mean.
From September to October, average highs rise by 1.0°C to 30.3°C, and monthly rainfall rises from 33 mm to 70 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
Merauke climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.5°C24.8°C | 24.8°C | 276 | 27.8 | 12.613 h |
| February | 29.2°C24.7°C | 24.7°C | 261 | 26.0 | 12.412 h |
| March | 29.1°C24.5°C | 24.5°C | 297 | 27.3 | 12.212 h |
| April | 29.2°C24.5°C | 24.5°C | 206 | 22.4 | 11.912 h |
| May | 28.8°C24.5°C | 24.5°C | 106 | 18.1 | 11.712 h |
| June | 28.1°C24.1°C | 24.1°C | 49 | 12.3 | 11.612 h |
| July | 27.7°C23.5°C | 23.5°C | 27 | 8.4 | 11.712 h |
| August | 28.1°C23.2°C | 23.2°C | 27 | 7.6 | 11.812 h |
| September, selected | 29.3°C23.7°C | 23.7°C | 33 | 7.9 | 12.112 h |
| October | 30.3°C24.3°C | 24.3°C | 70 | 11.6 | 12.312 h |
| November | 30.8°C25.0°C | 25.0°C | 106 | 16.2 | 12.512 h |
| December | 30.2°C25.0°C | 25.0°C | 208 | 25.4 | 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
- Jayapura in SeptemberIndonesia · 664 kmHigh 29.5°C · Low 24.2°C · 191 mm rain
- Port Moresby in SeptemberPapua New Guinea · 749 kmHigh 30.1°C · Low 22.8°C · 45 mm rain
- Nabire in SeptemberIndonesia · 788 kmHigh 28.2°C · Low 21.7°C · 255 mm rain
- Tual in SeptemberIndonesia · 903 kmHigh 26.5°C · Low 24.9°C · 40 mm rain
- Manokwari in SeptemberIndonesia · 1102 kmHigh 27.5°C · Low 23.3°C · 147 mm rain
- Sorong in SeptemberIndonesia · 1320 kmHigh 29.4°C · Low 23.9°C · 249 mm rain
- Ambon in SeptemberIndonesia · 1453 kmHigh 26.8°C · Low 25.0°C · 71 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 Merauke) is explained once on the Merauke year overview and on the Sources, method and limits page.