Climate averages 1991–2020
Oyem weather
in December.
A hot, wet month: the joint 5th warmest and the 3rd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a hot month in Oyem: daytime highs average 28.3°C and nights cool to about 20.1°C. By daytime temperature it is the joint 5th warmest of the 12 months.
Expect about 116 mm of rain on roughly 20 days, which makes December a wet month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 02 min on an average December day.
The nearest other city in this atlas is Ciudad de la Paz (84 km away). In December its highs average 27.8°C, about as warm as Oyem, with 172 mm of rain.
Among the 6 cities listed in Gabon, Oyem ranks 5th of 6 for the warmest December highs and 1st of 6 for the driest December (rainfall, lowest first). The mean December high of those 6 cities is 28.7°C; Oyem is 0.4°C cooler than that mean.
From December to January, average highs rise by 0.7°C to 29.0°C, and monthly rainfall falls from 116 mm to 84 mm.
The annual picture
December 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
Oyem climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.0°C20.3°C | 20.3°C | 84 | 16.4 | 12.012 h |
| February | 29.0°C20.5°C | 20.5°C | 113 | 17.2 | 12.112 h |
| March | 28.8°C20.6°C | 20.6°C | 200 | 25.4 | 12.112 h |
| April | 28.8°C20.7°C | 20.7°C | 226 | 26.4 | 12.112 h |
| May | 28.3°C20.6°C | 20.6°C | 185 | 26.9 | 12.212 h |
| June | 27.6°C20.2°C | 20.2°C | 143 | 22.7 | 12.212 h |
| July | 27.2°C19.8°C | 19.8°C | 119 | 20.4 | 12.212 h |
| August | 27.4°C20.0°C | 20.0°C | 117 | 20.6 | 12.212 h |
| September | 27.5°C20.1°C | 20.1°C | 223 | 27.2 | 12.112 h |
| October | 27.2°C20.1°C | 20.1°C | 261 | 29.1 | 12.112 h |
| November | 27.4°C19.9°C | 19.9°C | 232 | 27.3 | 12.012 h |
| December, selected | 28.3°C20.1°C | 20.1°C | 116 | 20.4 | 12.012 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
December in nearby cities
- Ciudad de la Paz in DecemberEquatorial Guinea · 84 kmHigh 27.8°C · Low 20.0°C · 172 mm rain
- Ébolowa in DecemberCameroon · 152 kmHigh 28.4°C · Low 21.0°C · 85 mm rain
- Sangmélima in DecemberCameroon · 155 kmHigh 28.7°C · Low 20.4°C · 46 mm rain
- Bata in DecemberEquatorial Guinea · 204 kmHigh 28.3°C · Low 23.4°C · 213 mm rain
- Mbalmayo in DecemberCameroon · 213 kmHigh 28.4°C · Low 20.9°C · 48 mm rain
- Kribi in DecemberCameroon · 238 kmHigh 27.7°C · Low 24.4°C · 136 mm rain
- Yaoundé in DecemberCameroon · 252 kmHigh 27.9°C · Low 21.0°C · 53 mm rain
- Libreville in DecemberGabon · 272 kmHigh 28.4°C · Low 23.7°C · 316 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 Oyem) is explained once on the Oyem year overview and on the Sources, method and limits page.