Climate averages 1991–2020
Owendo weather
in September.
A hot, wet month: the joint 8th warmest and the 4th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Owendo: daytime highs average 28.3°C and nights cool to about 23.1°C. By daytime temperature it is the joint 8th warmest of the 12 months.
Expect about 123 mm of rain on roughly 20 days, which makes September a wet month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 07 min on an average September day.
The nearest other city in this atlas is Libreville (13 km away). In September its highs average 27.6°C, 0.7°C cooler than Owendo, with 151 mm of rain.
Among the 6 cities listed in Gabon, Owendo ranks 3rd of 6 for the warmest September highs and 4th of 6 for the driest September (rainfall, lowest first). The mean September high of those 6 cities is 28.3°C; Owendo is 0.1°C warmer than that mean.
From September to October, average highs stay level at 28.3°C, and monthly rainfall rises from 123 mm to 335 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Owendo climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.2°C23.4°C | 23.4°C | 247 | 29.1 | 12.112 h |
| February | 29.6°C23.8°C | 23.8°C | 218 | 26.0 | 12.112 h |
| March | 30.0°C24.0°C | 24.0°C | 267 | 28.8 | 12.112 h |
| April | 29.9°C24.1°C | 24.1°C | 255 | 27.3 | 12.112 h |
| May | 29.4°C24.0°C | 24.0°C | 224 | 26.2 | 12.112 h |
| June | 28.2°C22.9°C | 22.9°C | 66 | 11.0 | 12.112 h |
| July | 27.8°C22.2°C | 22.2°C | 26 | 5.6 | 12.112 h |
| August | 28.2°C22.5°C | 22.5°C | 27 | 6.7 | 12.112 h |
| September, selected | 28.3°C23.1°C | 23.1°C | 123 | 20.2 | 12.112 h |
| October | 28.3°C23.2°C | 23.2°C | 335 | 30.2 | 12.112 h |
| November | 28.8°C23.2°C | 23.2°C | 382 | 29.7 | 12.112 h |
| December | 28.9°C23.2°C | 23.2°C | 310 | 30.2 | 12.112 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Libreville in SeptemberGabon · 13 kmHigh 27.6°C · Low 23.4°C · 151 mm rain
- Port-Gentil in SeptemberGabon · 138 kmHigh 27.3°C · Low 23.6°C · 34 mm rain
- Bata in SeptemberEquatorial Guinea · 177 kmHigh 27.1°C · Low 22.9°C · 245 mm rain
- Ciudad de la Paz in SeptemberEquatorial Guinea · 206 kmHigh 26.9°C · Low 20.1°C · 266 mm rain
- Oyem in SeptemberGabon · 273 kmHigh 27.5°C · Low 20.1°C · 223 mm rain
- Kribi in SeptemberCameroon · 298 kmHigh 26.2°C · Low 23.3°C · 335 mm rain
- São Tomé in SeptemberSao Tome and Principe · 309 kmHigh 25.5°C · Low 23.8°C · 46 mm rain
- Ébolowa in SeptemberCameroon · 343 kmHigh 27.0°C · Low 20.5°C · 241 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Owendo) is explained once on the Owendo year overview and on the Sources, method and limits page.