Banda Aceh, Indonesia Climate
The warmest month is May, with an average high of 30°C; the coldest is January, with an average low of 25°C. A normal year brings 1832 mm of precipitation.
Temperature through the year
The normal daily high and low. The line marks today.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
Normals for Sep 25
- Normal high
- 29°C
- Normal low
- 25°C
- Reanalysis high
- 31°Cin 2008
- Reanalysis low
- 24°Cin 2006
- Chance of a wet day
- 71%
- Daylight
- 12 h 06 min
Month by month
Averages for 1991-2020. Wet days have at least 1 mm of precipitation in the reanalysis. Each month links to its own page.
| Month | Avg high | Avg low | Warmest | Coldest | Precipitation | Wet days |
|---|---|---|---|---|---|---|
| January | 28°C | 25°C | 30°C (2001) | 22°C (2011) | 174 mm | 21.7 |
| February | 29°C | 25°C | 31°C (2010) | 23°C (2000) | 119 mm | 17.0 |
| March | 29°C | 26°C | 33°C (2015) | 23°C (1996) | 136 mm | 18.6 |
| April | 30°C | 26°C | 33°C (1998) | 24°C (2011) | 132 mm | 21.0 |
| May | 30°C | 26°C | 33°C (1992) | 24°C (2008) | 146 mm | 18.6 |
| June | 30°C | 26°C | 32°C (2009) | 24°C (2012) | 93 mm | 15.0 |
| July | 29°C | 25°C | 32°C (2009) | 24°C (2016) | 93 mm | 15.5 |
| August | 29°C | 25°C | 32°C (2001) | 24°C (1994) | 112 mm | 18.6 |
| September | 29°C | 25°C | 32°C (2019) | 24°C (2004) | 129 mm | 18.0 |
| October | 28°C | 25°C | 32°C (2017) | 24°C (2013) | 195 mm | 24.8 |
| November | 28°C | 25°C | 31°C (2008) | 23°C (2013) | 258 mm | 27.0 |
| December | 28°C | 25°C | 30°C (2013) | 22°C (1994) | 245 mm | 24.8 |
| Year | 29°C | 25°C | 1832 mm | 241 |
Precipitation
Rain and melted snow together. The chance of a wet day is the share of days with at least 1 mm of precipitation in the reanalysis.
1832 mm in a normal year, most in November.
Chance of a wet day
- Chance of a wet day
Humidity and comfort
NASA POWER reanalysis, 1991-2020, for the grid cell around Banda Aceh.
The muggiest month is July, when 101 percent of days are muggy or worse, with a mean dew point of 18°C or more.
| Month | Dew point | Humidity | Dry | Comfortable | Humid | Muggy | Oppressive | Miserable |
|---|---|---|---|---|---|---|---|---|
| January | 23°C | 83% | 0% | 0% | 0% | 3% | 93% | 4% |
| February | 23°C | 80% | 0% | 0% | 0% | 4% | 92% | 4% |
| March | 23°C | 78% | 0% | 0% | 0% | 1% | 93% | 5% |
| April | 23°C | 78% | 0% | 0% | 0% | 0% | 85% | 15% |
| May | 23°C | 79% | 0% | 0% | 0% | 0% | 80% | 20% |
| June | 23°C | 78% | 0% | 0% | 0% | 1% | 94% | 5% |
| July | 23°C | 77% | 0% | 0% | 0% | 4% | 95% | 2% |
| August | 22°C | 77% | 0% | 0% | 0% | 3% | 97% | 0% |
| September | 22°C | 78% | 0% | 0% | 0% | 3% | 97% | 1% |
| October | 23°C | 81% | 0% | 0% | 0% | 1% | 96% | 3% |
| November | 23°C | 83% | 0% | 0% | 0% | 1% | 93% | 6% |
| December | 23°C | 84% | 0% | 0% | 0% | 2% | 91% | 7% |
Comfort is judged by the day's mean dew point: dry below 13°C, comfortable to 16°C, humid to 18°C, muggy to 21°C, oppressive to 24°C, miserable above.
Clouds
Average share of the sky covered, from satellite (CERES and GEWEX SRB) by way of NASA POWER, 1991-2020.
The clearest month is March, with the sky 72 percent covered on average; the cloudiest is October, at 89 percent.
Wind
The mean wind speed over the whole day, from the MERRA-2 reanalysis by way of NASA POWER. Gusts run well above it.
The windiest month is July, averaging 18.4 km/h at 10 meters (33 feet) above the ground.
Daylight and sunshine
The longest day is Jun 11, with 12 h 27 min of daylight; the shortest is Jan 1, with 11 h 48 min.
- Day length
Solar energy
Average daily sunshine reaching the ground on a flat surface, in kilowatt-hours per square meter, clouds included.
Month pages
The weather in Banda Aceh in each month, day by day.
What this means
A normal is the average of the thirty years 1991 to 2020, the period the World Meteorological Organization and NOAA use for comparison. It is an average, not a forecast: most days depart from it, and some by a long way.
Where no station record is within reach, the extremes shown are the highest and lowest the reanalysis produced for the date in 1991-2020, not measured records.
Cloud, humidity, wind and sunshine come from a reanalysis: a weather model run over the past with every observation fed in, averaged over a grid cell about 50 km across. It is consistent everywhere on Earth; it smooths local detail such as a lake shore or a valley.
More for this place
Nearby
Sources
Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.