Port-Gentil, Gabon Climate
The warmest month is March, with an average high of 28°C; the coldest is July, with an average low of 23°C. A normal year brings 1850 mm of precipitation.
Temperature through the year
The normal daily high and low and the record for every date at Port-Gentil, since 1950. The line marks today.
- Normal low
- Normal high
- Record high
- Record low
Normals for Sep 27
- Normal high
- 26°C
- Normal low
- 25°C
- Record high
- 31°Cin 1951
- Record low
- 22°Cin 1960
- Chance of a wet day
- 62%
- 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 | Record high | Record low | Precipitation | Wet days |
|---|---|---|---|---|---|---|
| January | 27°C | 27°C | 33°C (2020) | 17°C (2017) | 176 mm | 25.2 |
| February | 28°C | 27°C | 34°C (2016) | 19°C (1993) | 184 mm | 25.1 |
| March | 28°C | 27°C | 35°C (1952) | 20°C (1987) | 256 mm | 28.4 |
| April | 28°C | 27°C | 34°C (1952) | 18°C (2005) | 247 mm | 26.4 |
| May | 27°C | 26°C | 33°C (2024) | 19°C (1994) | 166 mm | 21.9 |
| June | 25°C | 24°C | 33°C (2012) | 16°C (1972) | 24 mm | 4.6 |
| July | 24°C | 23°C | 31°C (1952) | 12°C (2018) | 5 mm | 1.0 |
| August | 25°C | 24°C | 30°C (2023) | 13°C (1953) | 9 mm | 1.9 |
| September | 25°C | 25°C | 33°C (2014) | 18°C (1973) | 51 mm | 10.9 |
| October | 26°C | 26°C | 33°C (1995) | 20°C (1964) | 235 mm | 26.6 |
| November | 27°C | 26°C | 34°C (1981) | 16°C (2003) | 309 mm | 28.5 |
| December | 27°C | 26°C | 35°C (1981) | 18°C (2012) | 188 mm | 25.7 |
| Year | 26°C | 26°C | 1850 mm | 226 |
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.
1850 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 Port-Gentil.
The muggiest month is January, 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 | 24°C | 85% | 0% | 0% | 0% | 0% | 34% | 66% |
| February | 25°C | 84% | 0% | 0% | 0% | 0% | 17% | 83% |
| March | 25°C | 84% | 0% | 0% | 0% | 0% | 8% | 92% |
| April | 25°C | 85% | 0% | 0% | 0% | 0% | 9% | 91% |
| May | 24°C | 87% | 0% | 0% | 0% | 0% | 31% | 69% |
| June | 22°C | 86% | 0% | 0% | 0% | 12% | 83% | 5% |
| July | 21°C | 85% | 0% | 0% | 0% | 48% | 51% | 0% |
| August | 21°C | 84% | 0% | 0% | 0% | 37% | 63% | 0% |
| September | 22°C | 85% | 0% | 0% | 0% | 4% | 96% | 0% |
| October | 23°C | 86% | 0% | 0% | 0% | 0% | 89% | 11% |
| November | 24°C | 87% | 0% | 0% | 0% | 0% | 46% | 54% |
| December | 24°C | 86% | 0% | 0% | 0% | 0% | 37% | 63% |
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 67 percent covered on average; the cloudiest is October, at 80 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 June, averaging 18.0 km/h at 10 meters (33 feet) above the ground.
Daylight and sunshine
The longest day is Jan 1, with 12 h 10 min of daylight; the shortest is May 26, with 12 h 04 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 Port-Gentil 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.
A record is the highest or lowest value on the date in every year the station has reported, back to 1950. It rests on one station, so a neighbor a few miles away can hold different ones.
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
Sources
Records: NOAA GHCN-Daily, station GB000004501, every year on file, quality-flagged values removed. 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 2026-09-27. Sun and moon: computed with the NOAA solar equations and Meeus.