Pago Pago
American Samoa
| Season | Autumn | Winter | Spring | Summer | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Sep | Oct | Nov | Dec | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Year |
| Record high, °C | 33 | 34 | 35 | 34 | 35 | 36 | 35 | 35 | 34 | 33 | 33 | 33 | 36 |
| Average high, °C | 30 | 30 | 30 | 31 | 31 | 31 | 31 | 31 | 30 | 29 | 29 | 29 | 30 |
| Average temperature, °C | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 28 |
| Average low, °C | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
| Record low, °C | 17 | 19 | 19 | 19 | 19 | 19 | 19 | 20 | 19 | 18 | 17 | 18 | 17 |
| Rain, days | 17 | 22 | 21 | 23 | 25 | 22 | 23 | 22 | 21 | 19 | 19 | 18 | 252 |
| Thunderstorms, days | 1 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 0 | 1 | 27 |
| Snowfall, cm. | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 2 |
| Average precipitation, mm. | 193 | 257 | 287 | 368 | 368 | 323 | 297 | 279 | 269 | 150 | 165 | 160 | 3116 |
| Relative humidity morning, % | 85 | 87 | 87 | 88 | 89 | 89 | 89 | 90 | 87 | 85 | 83 | 84 | 87 |
| Relative humidity evening, % | 75 | 77 | 77 | 76 | 76 | 77 | 76 | 78 | 78 | 77 | 75 | 76 | 77 |
| Wind speed, km/h | 22 | 20 | 18 | 16 | 16 | 16 | 15 | 15 | 18 | 21 | 22 | 22 | 18 |
| Day Length, часов | 12 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 |
| Dew point, °C | 24 | 24 | 24 | 25 | 25 | 25 | 25 | 25 | 24 | 24 | 23 | 23 | 290 |
| Growing degree-day, °C | 930 | 972 | 958 | 1003 | 1006 | 917 | 1017 | 972 | 984 | 929 | 938 | 939 | 11565 |
| Solar radiation, global, Mj/m2 | 21 | 22 | 21 | 21 | 20 | 21 | 20 | 19 | 17 | 16 | 17 | 19 | 19 |