Donghol-Sigon, Guinea Climate
The warmest month is April, with an average high of 39°C; the coldest is December, with an average low of 17°C. A normal year brings 1320 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
- 21°C
- Reanalysis high
- 35°Cin 2002
- Reanalysis low
- 20°Cin 1992
- Chance of a wet day
- 92%
- Daylight
- 12 h 05 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 | 34°C | 17°C | 39°C (2007) | 10°C (2009) | 0 mm | 0.0 |
| February | 37°C | 19°C | 42°C (1998) | 12°C (2016) | 0 mm | 0.0 |
| March | 39°C | 22°C | 42°C (2017) | 13°C (2019) | 3 mm | 0.0 |
| April | 39°C | 24°C | 43°C (2016) | 17°C (2015) | 12 mm | 3.0 |
| May | 38°C | 25°C | 44°C (2019) | 19°C (1994) | 71 mm | 12.4 |
| June | 33°C | 23°C | 40°C (2002) | 20°C (1997) | 156 mm | 24.0 |
| July | 30°C | 22°C | 37°C (2000) | 19°C (1991) | 282 mm | 27.9 |
| August | 28°C | 21°C | 36°C (2003) | 18°C (2018) | 412 mm | 31.0 |
| September | 28°C | 21°C | 37°C (2002) | 18°C (1999) | 264 mm | 27.0 |
| October | 29°C | 21°C | 37°C (2002) | 17°C (2020) | 105 mm | 18.6 |
| November | 31°C | 20°C | 39°C (2002) | 14°C (1993) | 15 mm | 3.0 |
| December | 33°C | 17°C | 39°C (2005) | 8°C (2012) | 0 mm | 0.0 |
| Year | 33°C | 21°C | 1320 mm | 147 |
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.
1320 mm in a normal year, most in August.
Chance of a wet day
- Chance of a wet day
Humidity and comfort
NASA POWER reanalysis, 1991-2020, for the grid cell around Donghol-Sigon.
The muggiest month is July, 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 | 2°C | 26% | 97% | 2% | 0% | 0% | 0% | 0% |
| February | -1°C | 19% | 98% | 1% | 0% | 0% | 0% | 0% |
| March | 2°C | 20% | 95% | 4% | 0% | 0% | 0% | 0% |
| April | 8°C | 28% | 75% | 13% | 8% | 3% | 0% | 0% |
| May | 16°C | 46% | 20% | 17% | 25% | 31% | 6% | 0% |
| June | 21°C | 69% | 0% | 1% | 5% | 49% | 44% | 0% |
| July | 22°C | 82% | 0% | 0% | 0% | 30% | 70% | 0% |
| August | 22°C | 88% | 0% | 0% | 0% | 12% | 88% | 0% |
| September | 22°C | 87% | 0% | 0% | 0% | 11% | 89% | 0% |
| October | 21°C | 81% | 0% | 1% | 5% | 30% | 64% | 0% |
| November | 15°C | 61% | 25% | 23% | 22% | 25% | 5% | 0% |
| December | 8°C | 41% | 83% | 12% | 4% | 1% | 0% | 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 30 percent covered on average; the cloudiest is August, at 77 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 April, averaging 12.2 km/h at 10 meters (33 feet) above the ground.
Daylight and sunshine
The longest day is Jun 22, with 12 h 50 min of daylight; the shortest is Dec 14, with 11 h 26 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 Donghol-Sigon 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.