Climate averages 1991–2020
Nusantara weather
in May.
A hot, very wet month: the joint 7th warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a hot month in Nusantara: daytime highs average 29.5°C and nights cool to about 23.8°C. By daytime temperature it is the joint 7th warmest of the 12 months.
Expect about 270 mm of rain on roughly 28 days, which makes May a very wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 04 min on an average May day.
The nearest other city in this atlas is Balikpapan (35 km away). In May its highs average 28.3°C, 1.1°C cooler than Nusantara, with 198 mm of rain.
Among the 200 cities listed in Indonesia, Nusantara ranks joint 100th of 200 for the warmest May highs and 189th of 200 for the driest May (rainfall, lowest first). The mean May high of those 200 cities is 29.2°C; Nusantara is 0.3°C warmer than that mean.
From May to June, average highs fall by 0.4°C to 29.0°C, and monthly rainfall falls from 270 mm to 221 mm.
The annual picture
May 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
Nusantara climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.5°C23.3°C | 23.3°C | 323 | 27.9 | 12.212 h |
| February | 29.8°C23.4°C | 23.4°C | 288 | 24.5 | 12.112 h |
| March | 29.9°C23.5°C | 23.5°C | 349 | 28.5 | 12.112 h |
| April | 29.8°C23.7°C | 23.7°C | 356 | 27.9 | 12.112 h |
| May, selected | 29.5°C23.8°C | 23.8°C | 270 | 28.2 | 12.112 h |
| June | 29.0°C23.5°C | 23.5°C | 221 | 25.4 | 12.112 h |
| July | 28.7°C23.2°C | 23.2°C | 181 | 23.5 | 12.112 h |
| August | 29.2°C23.2°C | 23.2°C | 142 | 20.3 | 12.112 h |
| September | 29.9°C23.4°C | 23.4°C | 155 | 18.9 | 12.112 h |
| October | 30.1°C23.5°C | 23.5°C | 222 | 24.0 | 12.112 h |
| November | 29.7°C23.5°C | 23.5°C | 308 | 28.4 | 12.212 h |
| December | 29.5°C23.5°C | 23.5°C | 349 | 29.4 | 12.212 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
May in nearby cities
- Balikpapan in MayIndonesia · 35 kmHigh 28.3°C · Low 24.6°C · 198 mm rain
- Loa Janan in MayIndonesia · 61 kmHigh 30.1°C · Low 23.9°C · 256 mm rain
- Samarinda in MayIndonesia · 72 kmHigh 30.0°C · Low 23.7°C · 260 mm rain
- Bontang in MayIndonesia · 150 kmHigh 29.3°C · Low 24.6°C · 197 mm rain
- Palangkaraya in MayIndonesia · 339 kmHigh 30.2°C · Low 23.7°C · 189 mm rain
- Martapura in MayIndonesia · 340 kmHigh 30.3°C · Low 23.8°C · 185 mm rain
- Banjarbaru in MayIndonesia · 344 kmHigh 30.2°C · Low 23.6°C · 185 mm rain
- Banjarmasin in MayIndonesia · 351 kmHigh 30.1°C · Low 24.2°C · 149 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 Nusantara) is explained once on the Nusantara year overview and on the Sources, method and limits page.