Climate averages 1991–2020
Batam weather
in July.
A hot, very wet month: the joint 5th warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a hot month in Batam: daytime highs average 28.1°C and nights cool to about 26.2°C. By daytime temperature it is the joint 5th warmest of the 12 months.
Expect about 187 mm of rain on roughly 23 days, which makes July a very wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 11 min on an average July day.
The nearest other city in this atlas is Ulu Bedok (23 km away). In July its highs average 28.5°C, about as warm as Batam, with 187 mm of rain.
Among the 200 cities listed in Indonesia, Batam ranks joint 150th of 200 for the warmest July highs and 182nd of 200 for the driest July (rainfall, lowest first). The mean July high of those 200 cities is 29.0°C; Batam is 0.9°C cooler than that mean.
From July to August, average highs fall by 0.1°C to 28.0°C, and monthly rainfall falls from 187 mm to 164 mm.
The annual picture
July 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, selected | 28.1°C26.2°C | 26.2°C | 187 | 22.9 | 12.212 h |
| August | 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
July in nearby cities
- Ulu Bedok in JulySingapore · 23 kmHigh 28.5°C · Low 25.5°C · 187 mm rain
- Singapore in JulySingapore · 25 kmHigh 28.3°C · Low 26.0°C · 195 mm rain
- Pasir Gudang in JulyMalaysia · 37 kmHigh 28.7°C · Low 25.0°C · 168 mm rain
- Jurong Town in JulySingapore · 39 kmHigh 28.5°C · Low 25.5°C · 195 mm rain
- Woodlands in JulySingapore · 41 kmHigh 28.5°C · Low 25.4°C · 162 mm rain
- Johor Bahru in JulyMalaysia · 46 kmHigh 28.7°C · Low 24.8°C · 162 mm rain
- Iskandar Puteri in JulyMalaysia · 52 kmHigh 28.5°C · Low 25.5°C · 147 mm rain
- Tanjung Pinang in JulyIndonesia · 55 kmHigh 28.3°C · Low 26.0°C · 153 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.