List of largest cities in Guinea-Bissau
Bissau
Bissau
Bafata
Bafatá
Gabu
Gabú
Bissora
Oio
Bolama
Bolama and Bijagos
Cacheu
Cacheu
Weather, climate, temperature by months in Guinea-Bissau
| Season | Autumn | Winter | Spring | Summer | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Sep | Oct | Nov | Dec | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Year | ||
| Record high | °C | 37 | 38 | 37 | 38 | 40 | 39 | 42 | 43 | 41 | 37 | 40 | 39 | 43 | |
| Average high | °C | 30 | 31 | 32 | 31 | 31 | 33 | 34 | 34 | 34 | 31 | 29 | 29 | 31 | |
| Average temperature | °C | 27 | 28 | 27 | 25 | 25 | 27 | 28 | 29 | 29 | 28 | 27 | 27 | 27 | |
| Average low | °C | 24 | 24 | 23 | 20 | 19 | 20 | 22 | 23 | 24 | 24 | 24 | 24 | 22 | |
| Record low | °C | 21 | 19 | 15 | 12 | 11 | 13 | 14 | 14 | 18 | 18 | 21 | 21 | 11 | |
| Rain | Days | 9 | 3 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 5 | 11 | 13 | 48 | |
| Fog | Days | 2 | 4 | 8 | 7 | 5 | 6 | 8 | 7 | 8 | 3 | 1 | 1 | 59 | |
| Thunderstorms | Days | 7 | 5 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 6 | 6 | 28 | |
| Average precipitation | Mm. | 388 | 180 | 26 | 2 | 0 | 1 | 0 | 1 | 31 | 170 | 426 | 549 | 1774 | |
| Relative humidity | % | 86 | 78 | 67 | 54 | 48 | 49 | 48 | 50 | 60 | 71 | 78 | 83 | 64 | |
| Relative humidity morning | % | 94 | 93 | 88 | 75 | 64 | 71 | 75 | 77 | 82 | 88 | 92 | 94 | 83 | |
| Relative humidity evening | % | 74 | 65 | 49 | 35 | 29 | 28 | 32 | 37 | 47 | 63 | 73 | 76 | 51 | |
| Wind speed | Km/h | 6 | 5 | 5 | 6 | 7 | 7 | 8 | 8 | 9 | 8 | 7 | 7 | 7 | |
| Day Length | Hours | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 13 | 13 | 13 | 13 | 12 | |
| Dew point | °C | 24 | 23 | 20 | 15 | 13 | 15 | 16 | 17 | 20 | 22 | 23 | 23 | 232 | |
| Growing degree-day | °C | 505 | 544 | 511 | 468 | 476 | 473 | 560 | 560 | 592 | 542 | 523 | 515 | 6269 | |
| Solar radiation, global | Mj/m2 | 18 | 18 | 19 | 19 | 20 | 21 | 24 | 25 | 23 | 20 | 18 | 17 | 20 | |
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