Climate averages 1991–2020
Batam weather
in August.
A hot, wet month: the joint 7th warmest and the 4th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a hot month in Batam: daytime highs average 28.0°C and nights cool to about 26.1°C. By daytime temperature it is the joint 7th warmest of the 12 months.
Expect about 164 mm of rain on roughly 22 days, which makes August a wet month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 09 min on an average August day.
The nearest other city in this atlas is Ulu Bedok (23 km away). In August its highs average 28.5°C, about as warm as Batam, with 164 mm of rain.
Among the 200 cities listed in Indonesia, Batam ranks joint 162nd of 200 for the warmest August highs and 172nd of 200 for the driest August (rainfall, lowest first). The mean August high of those 200 cities is 29.5°C; Batam is 1.5°C cooler than that mean.
From August to September, average highs stay level at 28.1°C, and monthly rainfall falls from 164 mm to 148 mm.
The annual picture
August 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
Batam climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 27.2°C25.1°C | 25.1°C | 199 | 19.1 | 12.112 h |
| February | 27.7°C25.4°C | 25.4°C | 98 | 13.0 | 12.112 h |
| March | 28.2°C25.6°C | 25.6°C | 145 | 19.8 | 12.112 h |
| April | 28.5°C25.9°C | 25.9°C | 182 | 25.2 | 12.112 h |
| May | 28.5°C26.2°C | 26.2°C | 210 | 26.4 | 12.212 h |
| June | 28.5°C26.4°C | 26.4°C | 193 | 22.8 | 12.212 h |
| July | 28.1°C26.2°C | 26.2°C | 187 | 22.9 | 12.212 h |
| August, selected | 28.0°C26.1°C | 26.1°C | 164 | 22.3 | 12.212 h |
| September | 28.1°C26.0°C | 26.0°C | 148 | 19.9 | 12.112 h |
| October | 28.0°C25.6°C | 25.6°C | 190 | 23.8 | 12.112 h |
| November | 27.6°C25.3°C | 25.3°C | 290 | 27.8 | 12.112 h |
| December | 27.3°C25.2°C | 25.2°C | 298 | 24.8 | 12.112 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
August in nearby cities
- Ulu Bedok in AugustSingapore · 23 kmHigh 28.5°C · Low 25.5°C · 164 mm rain
- Singapore in AugustSingapore · 25 kmHigh 28.2°C · Low 25.9°C · 178 mm rain
- Pasir Gudang in AugustMalaysia · 37 kmHigh 28.7°C · Low 24.9°C · 170 mm rain
- Jurong Town in AugustSingapore · 39 kmHigh 28.4°C · Low 25.4°C · 178 mm rain
- Woodlands in AugustSingapore · 41 kmHigh 28.4°C · Low 25.4°C · 167 mm rain
- Johor Bahru in AugustMalaysia · 46 kmHigh 28.7°C · Low 24.7°C · 167 mm rain
- Iskandar Puteri in AugustMalaysia · 52 kmHigh 28.5°C · Low 25.4°C · 146 mm rain
- Tanjung Pinang in AugustIndonesia · 55 kmHigh 28.3°C · Low 26.0°C · 138 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 Batam) is explained once on the Batam year overview and on the Sources, method and limits page.