Sao Tome
Sao Tome and Principe
| Season | Autumn | Winter | Spring | Summer | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Sep | Oct | Nov | Dec | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Year |
| Record high, °C | 33 | 33 | 33 | 33 | 32 | 33 | 32 | 32 | 32 | 31 | 32 | 32 | 33 |
| Average high, °C | 25 | 25 | 26 | 27 | 27 | 28 | 28 | 28 | 27 | 25 | 24 | 24 | 26 |
| Average temperature, °C | 24 | 24 | 25 | 25 | 25 | 26 | 26 | 26 | 25 | 24 | 23 | 23 | 25 |
| Average low, °C | 19 | 20 | 20 | 20 | 20 | 21 | 20 | 20 | 20 | 19 | 18 | 18 | 20 |
| Record low, °C | 17 | 18 | 20 | 20 | 20 | 20 | 20 | 20 | 16 | 16 | 16 | 17 | 16 |
| Rain, days | 6 | 8 | 9 | 6 | 4 | 4 | 6 | 7 | 5 | 1 | 1 | 2 | 59 |
| Fog, days | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 2 |
| Thunderstorms, days | 0 | 1 | 9 | 12 | 10 | 11 | 15 | 16 | 9 | 0 | 0 | 0 | 83 |
| Average precipitation, mm. | 115 | 256 | 233 | 194 | 155 | 119 | 177 | 197 | 193 | 29 | 29 | 64 | 1761 |
| Relative humidity, % | 85 | 87 | 86 | 86 | 85 | 83 | 82 | 83 | 85 | 83 | 83 | 84 | 84 |
| Relative humidity morning, % | 92 | 92 | 94 | 95 | 95 | 94 | 94 | 94 | 92 | 90 | 88 | 88 | 92 |
| Relative humidity evening, % | 75 | 77 | 78 | 79 | 77 | 75 | 76 | 77 | 76 | 73 | 72 | 73 | 76 |
| Wind speed, km/h | 18 | 13 | 12 | 12 | 10 | 11 | 11 | 10 | 10 | 12 | 12 | 13 | 12 |
| Day Length, часов | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 |
| Dew point, °C | 21 | 22 | 22 | 22 | 22 | 23 | 23 | 23 | 23 | 21 | 20 | 20 | 260 |
| Growing degree-day, °C | 408 | 437 | 438 | 459 | 471 | 444 | 490 | 474 | 471 | 408 | 394 | 400 | 5293 |
| Solar radiation, global, Mj/m2 | 19 | 18 | 17 | 18 | 19 | 20 | 19 | 17 | 17 | 18 | 18 | 18 | 18 |