Oyem, Gabon climate
Af Tropical rainforest
Oyem has a remarkably steady warm-temperate climate (Tropical rainforest, Köppen Af). The hottest month is February with an average daily high near 84°F, while the coldest is October averaging around 68°F at night. Around 81 inches of precipitation falls each year, peaking in October (10.3 inches) and easing off in January (3.3 inches).
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Oyem climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 84 | 84 | 83 | 81 | 81 | 81 | 80 | 81 | 80 | 79 | 80 | 82 |
| Avg temp (°F) | 76 | 77 | 76 | 76 | 75 | 74 | 74 | 74 | 74 | 73 | 74 | 75 |
| Avg low (°F) | 68 | 69 | 70 | 70 | 69 | 68 | 68 | 68 | 68 | 68 | 68 | 68 |
| Precipitation (in) | 3.3 | 4.4 | 7.9 | 9.0 | 7.5 | 6.2 | 5.3 | 5.1 | 8.9 | 10.3 | 8.9 | 4.5 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 84 | 84 | 83 | 81 | 81 | 81 |
| Avg temp (°F) | 76 | 77 | 76 | 76 | 75 | 74 |
| Avg low (°F) | 68 | 69 | 70 | 70 | 69 | 68 |
| Precipitation (in) | 3.3 | 4.4 | 7.9 | 9.0 | 7.5 | 6.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 80 | 81 | 80 | 79 | 80 | 82 |
| Avg temp (°F) | 74 | 74 | 74 | 73 | 74 | 75 |
| Avg low (°F) | 68 | 68 | 68 | 68 | 68 | 68 |
| Precipitation (in) | 5.3 | 5.1 | 8.9 | 10.3 | 8.9 | 4.5 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with high ≥ 90°F (days) | 2 | 2 | 0.7 | 0.3 | 0.5 | 0.5 | 0.2 | 0.3 | 0.1 | — | — | 0.4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with high ≥ 90°F (days) | 2 | 2 | 0.7 | 0.3 | 0.5 | 0.5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with high ≥ 90°F (days) | 0.2 | 0.3 | 0.1 | — | — | 0.4 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 71 | 75 | 80 | 80 | 78 | 78 | 79 | 81 | 83 | 85 | 82 | 72 |
| Relative humidity (%) | 82 | 84 | 88 | 90 | 90 | 87 | 86 | 85 | 88 | 91 | 90 | 85 |
| Wind speed (mph) | 0.2 | 0.1 | 0.2 | 0.2 | 0.2 | 0.2 | 0.1 | 0.1 | 0.2 | 0.2 | 0.3 | 0.2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 71 | 75 | 80 | 80 | 78 | 78 |
| Relative humidity (%) | 82 | 84 | 88 | 90 | 90 | 87 |
| Wind speed (mph) | 0.2 | 0.1 | 0.2 | 0.2 | 0.2 | 0.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 79 | 81 | 83 | 85 | 82 | 72 |
| Relative humidity (%) | 86 | 85 | 88 | 91 | 90 | 85 |
| Wind speed (mph) | 0.1 | 0.1 | 0.2 | 0.2 | 0.3 | 0.2 |
Methodology & sources
Temperature & precipitation — modelled for this location from ERA5-Land reanalysis, a ~9 km global grid, because no long-record weather station is close enough to use.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.