Sibolga, Indonesia Climate
The warmest month is February, with an average high of 28°C; the coldest is October, with an average low of 24°C. A normal year brings 4228 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
- 27°C
- Normal low
- 24°C
- Reanalysis high
- 30°Cin 2002
- Reanalysis low
- 23°Cin 1994
- Chance of a wet day
- 80%
- 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 | 31°C (2016) | 22°C (2015) | 295 mm | 18.6 |
| February | 28°C | 25°C | 31°C (2020) | 22°C (2009) | 268 mm | 17.0 |
| March | 28°C | 25°C | 31°C (2020) | 23°C (2000) | 366 mm | 21.7 |
| April | 28°C | 25°C | 32°C (1998) | 23°C (1999) | 342 mm | 24.0 |
| May | 28°C | 25°C | 31°C (1998) | 23°C (2016) | 288 mm | 18.6 |
| June | 28°C | 25°C | 30°C (2003) | 22°C (2018) | 216 mm | 18.0 |
| July | 27°C | 25°C | 29°C (2015) | 22°C (2010) | 304 mm | 18.6 |
| August | 27°C | 25°C | 30°C (2020) | 22°C (1996) | 369 mm | 21.7 |
| September | 27°C | 24°C | 30°C (2015) | 23°C (1994) | 372 mm | 21.0 |
| October | 27°C | 24°C | 30°C (2004) | 23°C (1999) | 459 mm | 24.8 |
| November | 27°C | 24°C | 30°C (2011) | 23°C (2009) | 534 mm | 27.0 |
| December | 27°C | 24°C | 30°C (2002) | 23°C (1997) | 415 mm | 24.8 |
| Year | 28°C | 25°C | 4228 mm | 256 |
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.
4228 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 Sibolga.
The muggiest month is February, 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 | 85% | 0% | 0% | 0% | 2% | 82% | 16% |
| February | 23°C | 84% | 0% | 0% | 0% | 2% | 78% | 21% |
| March | 23°C | 85% | 0% | 0% | 0% | 0% | 70% | 29% |
| April | 24°C | 87% | 0% | 0% | 0% | 0% | 59% | 40% |
| May | 24°C | 86% | 0% | 0% | 0% | 0% | 55% | 45% |
| June | 23°C | 85% | 0% | 0% | 0% | 0% | 79% | 21% |
| July | 23°C | 85% | 0% | 0% | 0% | 1% | 90% | 9% |
| August | 23°C | 86% | 0% | 0% | 0% | 1% | 90% | 9% |
| September | 23°C | 86% | 0% | 0% | 0% | 1% | 89% | 10% |
| October | 23°C | 87% | 0% | 0% | 0% | 0% | 89% | 11% |
| November | 23°C | 89% | 0% | 0% | 0% | 0% | 83% | 17% |
| December | 23°C | 87% | 0% | 0% | 0% | 1% | 83% | 16% |
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 June, with the sky 78 percent covered on average; the cloudiest is November, at 92 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 6.8 km/h at 10 meters (33 feet) above the ground.
Daylight and sunshine
The longest day is Jun 8, with 12 h 14 min of daylight; the shortest is Jan 2, with 12 h 01 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 Sibolga 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 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.