Subulussalam, Indonesia Climate
The warmest month is March, with an average high of 27°C; the coldest is January, with an average low of 21°C. A normal year brings 3062 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
- 26°C
- Normal low
- 21°C
- Reanalysis high
- 29°Cin 2019
- Reanalysis low
- 20°Cin 2010
- Chance of a wet day
- 88%
- 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 | 27°C | 21°C | 30°C (2016) | 19°C (2009) | 198 mm | 21.7 |
| February | 27°C | 22°C | 31°C (1998) | 19°C (2014) | 172 mm | 19.8 |
| March | 27°C | 22°C | 31°C (1998) | 18°C (1996) | 236 mm | 24.8 |
| April | 27°C | 22°C | 31°C (1998) | 20°C (1997) | 243 mm | 27.0 |
| May | 27°C | 22°C | 30°C (2010) | 20°C (2016) | 229 mm | 24.8 |
| June | 27°C | 22°C | 29°C (2016) | 19°C (2012) | 177 mm | 21.0 |
| July | 26°C | 21°C | 29°C (2016) | 19°C (2016) | 220 mm | 21.7 |
| August | 26°C | 21°C | 29°C (2020) | 18°C (2018) | 260 mm | 24.8 |
| September | 26°C | 21°C | 30°C (2019) | 18°C (2011) | 297 mm | 24.0 |
| October | 26°C | 22°C | 30°C (2017) | 19°C (2009) | 357 mm | 27.9 |
| November | 26°C | 22°C | 29°C (2011) | 18°C (2018) | 366 mm | 27.0 |
| December | 26°C | 21°C | 29°C (2015) | 19°C (1993) | 307 mm | 27.9 |
| Year | 27°C | 22°C | 3062 mm | 292 |
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.
3062 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 Subulussalam.
The muggiest month is February, when 100 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 | 21°C | 88% | 0% | 0% | 0% | 31% | 68% | 0% |
| February | 22°C | 87% | 0% | 0% | 0% | 27% | 73% | 0% |
| March | 22°C | 88% | 0% | 0% | 0% | 14% | 86% | 0% |
| April | 22°C | 89% | 0% | 0% | 0% | 8% | 92% | 0% |
| May | 22°C | 89% | 0% | 0% | 0% | 7% | 92% | 1% |
| June | 22°C | 88% | 0% | 0% | 0% | 21% | 79% | 0% |
| July | 21°C | 88% | 0% | 0% | 0% | 37% | 63% | 0% |
| August | 21°C | 88% | 0% | 0% | 0% | 36% | 64% | 0% |
| September | 21°C | 89% | 0% | 0% | 0% | 30% | 70% | 0% |
| October | 22°C | 90% | 0% | 0% | 0% | 25% | 75% | 0% |
| November | 22°C | 91% | 0% | 0% | 0% | 18% | 82% | 0% |
| December | 22°C | 90% | 0% | 0% | 0% | 24% | 76% | 0% |
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 February, with the sky 81 percent covered on average; the cloudiest is November, at 93 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 October, averaging 6.1 km/h at 10 meters (33 feet) above the ground.
Daylight and sunshine
The longest day is Jun 7, with 12 h 17 min of daylight; the shortest is Jan 2, with 11 h 58 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 Subulussalam 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.