Georgetown
Guyana
| Season | Autumn | Winter | Spring | Summer | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Sep | Oct | Nov | Dec | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Year |
| Record high, °C | 33 | 33 | 32 | 32 | 32 | 32 | 32 | 31 | 32 | 33 | 33 | 32 | 33 |
| Average high, °C | 30 | 30 | 29 | 28 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 29 | 28 |
| Average temperature, °C | 28 | 28 | 27 | 27 | 26 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 |
| Average low, °C | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 25 | 25 |
| Record low, °C | 21 | 21 | 21 | 20 | 20 | 21 | 20 | 18 | 21 | 22 | 20 | 20 | 18 |
| Rain, days | 11 | 10 | 12 | 17 | 16 | 10 | 14 | 15 | 20 | 20 | 22 | 16 | 183 |
| Fog, days | 2 | 2 | 2 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 13 |
| Thunderstorms, days | 9 | 8 | 4 | 1 | 0 | 0 | 0 | 1 | 6 | 9 | 11 | 11 | 60 |
| Average precipitation, mm. | 71 | 64 | 90 | 183 | 178 | 112 | 120 | 165 | 252 | 280 | 239 | 156 | 1910 |
| Relative humidity, % | 68 | 68 | 70 | 72 | 71 | 68 | 68 | 70 | 74 | 75 | 73 | 70 | 70 |
| Relative humidity morning, % | 94 | 93 | 93 | 91 | 89 | 87 | 88 | 89 | 92 | 94 | 95 | 94 | 92 |
| Relative humidity evening, % | 73 | 74 | 75 | 77 | 76 | 75 | 74 | 75 | 78 | 79 | 76 | 74 | 76 |
| Wind speed, km/h | 9 | 9 | 9 | 9 | 10 | 11 | 11 | 10 | 9 | 8 | 8 | 8 | 9 |
| Day Length, часов | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 13 | 13 | 13 | 13 | 12 |
| Dew point, °C | 21 | 21 | 21 | 21 | 21 | 20 | 20 | 21 | 22 | 22 | 22 | 22 | 254 |
| Growing degree-day, °C | 534 | 549 | 522 | 518 | 505 | 466 | 518 | 507 | 527 | 507 | 521 | 539 | 6213 |
| Solar radiation, global, Mj/m2 | 25 | 23 | 21 | 19 | 20 | 22 | 23 | 23 | 21 | 20 | 22 | 24 | 22 |