Bissau weather in October
In October, Bissau sees average daytime highs of 31°C and overnight lows near 25°C, with 142 mm of rain across 22 wet days and about 11.7 hours of daylight. It is the 9th-warmest and 4th-wettest month of the year here.
Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 17% of the time in October, and the air most often feels miserable.
Daylight stretches from about 11 h 54 min at the start of October to 11 h 36 min by month's end. Set against the rest of the year, October is Bissau's 8th-clearest and 12th-windiest month. For the whole year in context, see Bissau's year-round climate.
- Daytime high
- 31°
- 9th warmest
- Overnight low
- 25°
- 11th coldest
- Rainfall
- 142 mm
- 22 wet days
- Daylight
- 11 h 42 min
- 6:55 AM – 6:39 PM
- Cloud cover
- 66%
- 8th clearest
- Wind
- 7 km/h
- 12th windiest
- Solar energy
- 4.93 kWh/m²
- Travel score
- 3.2
- out of 10
Bissau is capital city of Guinea-Bissau.
- Density
- 5,674/km²
- people per km²
- Founded
- 1687
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in October
Day-to-day highs hold fairly steady near 31°C through the month.
A typical October day in Bissau reaches about 31°C in the afternoon and slips back to 25°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 33°C. Set against its neighbours, October runs about 1°C warmer than September and about 1°C cooler than November.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 |
| Avg low (°C) | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 31 | 25 |
| 2 | 31 | 25 |
| 3 | 31 | 25 |
| 4 | 31 | 25 |
| 5 | 31 | 25 |
| 6 | 31 | 25 |
| 7 | 31 | 25 |
| 8 | 31 | 25 |
| 9 | 31 | 25 |
| 10 | 31 | 25 |
| 11 | 31 | 25 |
| 12 | 31 | 25 |
| 13 | 31 | 25 |
| 14 | 31 | 25 |
| 15 | 31 | 25 |
| 16 | 31 | 25 |
| 17 | 31 | 25 |
| 18 | 31 | 25 |
| 19 | 31 | 25 |
| 20 | 31 | 25 |
| 21 | 31 | 25 |
| 22 | 31 | 25 |
| 23 | 32 | 25 |
| 24 | 32 | 25 |
| 25 | 32 | 25 |
| 26 | 32 | 25 |
| 27 | 32 | 25 |
| 28 | 32 | 25 |
| 29 | 32 | 25 |
| 30 | 32 | 25 |
| 31 | 32 | 25 |
How October really feels in Bissau
Once humidity and wind are folded in, October averages 31 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
The story in October is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Bissau weather by month
How October compares with the rest of the year at a glance. October is the 9th-warmest and 4th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 33° / 21° | 0 | 0.1 | 11.4 | 4.4 |
| Feb | 34° / 22° | 1 | 0.1 | 11.6 | 3.6 |
| Mar | 35° / 23° | 0 | 0 | 11.9 | 3.3 |
| Apr | 35° / 24° | 0 | 0 | 12.3 | 3.6 |
| May | 33° / 25° | 6 | 1.3 | 12.5 | 4.1 |
| Jun | 32° / 26° | 87 | 12 | 12.7 | 3.8 |
| Jul | 30° / 25° | 352 | 27.8 | 12.6 | 3.0 |
| Aug | 29° / 25° | 452 | 29.3 | 12.4 | 2.9 |
| Sep | 30° / 25° | 307 | 27.7 | 12.1 | 2.8 |
| Oct | 31° / 25° | 142 | 22 | 11.7 | 3.2 |
| Nov | 33° / 24° | 23 | 4.6 | 11.5 | 4.2 |
| Dec | 33° / 22° | 2 | 0.3 | 11.3 | 4.4 |
Cloud cover in October
The sky is clear or mostly clear about 17% of the time in October.
Beyond those clear spells, partly cloudy skies cover about 24% of October, with mostly cloudy or overcast conditions the remaining 58%. Skies tend to open up as the month goes on.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 29 | 31 | 32 | 33 | 34 | 34 | 36 | 36 | 36 | 37 | 37 | 37 | 38 | 39 | 40 | 42 | 43 | 44 | 44 | 46 | 46 | 47 | 48 | 48 | 49 | 49 | 50 | 50 | 51 | 51 | 52 |
| Cloudier (%) | 71 | 69 | 68 | 67 | 66 | 66 | 64 | 64 | 64 | 63 | 63 | 63 | 62 | 61 | 60 | 58 | 57 | 56 | 56 | 54 | 54 | 53 | 52 | 52 | 51 | 51 | 50 | 50 | 49 | 49 | 48 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 29 | 71 |
| 2 | 31 | 69 |
| 3 | 32 | 68 |
| 4 | 33 | 67 |
| 5 | 34 | 66 |
| 6 | 34 | 66 |
| 7 | 36 | 64 |
| 8 | 36 | 64 |
| 9 | 36 | 64 |
| 10 | 37 | 63 |
| 11 | 37 | 63 |
| 12 | 37 | 63 |
| 13 | 38 | 62 |
| 14 | 39 | 61 |
| 15 | 40 | 60 |
| 16 | 42 | 58 |
| 17 | 43 | 57 |
| 18 | 44 | 56 |
| 19 | 44 | 56 |
| 20 | 46 | 54 |
| 21 | 46 | 54 |
| 22 | 47 | 53 |
| 23 | 48 | 52 |
| 24 | 48 | 52 |
| 25 | 49 | 51 |
| 26 | 49 | 51 |
| 27 | 50 | 50 |
| 28 | 50 | 50 |
| 29 | 51 | 49 |
| 30 | 51 | 49 |
| 31 | 52 | 48 |
Chance of precipitation in October
Bissau gets around 142 mm of rain over 22 wet days in October. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 70% and peaks near 85% on the wettest days. The odds ease toward the end of the month.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 85 | 84 | 84 | 83 | 82 | 82 | 81 | 81 | 81 | 80 | 79 | 79 | 78 | 77 | 76 | 75 | 74 | 72 | 71 | 69 | 67 | 65 | 63 | 61 | 58 | 56 | 53 | 51 | 48 | 46 | 43 |
| Rain chance (%) | |
|---|---|
| 1 | 85 |
| 2 | 84 |
| 3 | 84 |
| 4 | 83 |
| 5 | 82 |
| 6 | 82 |
| 7 | 81 |
| 8 | 81 |
| 9 | 81 |
| 10 | 80 |
| 11 | 79 |
| 12 | 79 |
| 13 | 78 |
| 14 | 77 |
| 15 | 76 |
| 16 | 75 |
| 17 | 74 |
| 18 | 72 |
| 19 | 71 |
| 20 | 69 |
| 21 | 67 |
| 22 | 65 |
| 23 | 63 |
| 24 | 61 |
| 25 | 58 |
| 26 | 56 |
| 27 | 53 |
| 28 | 51 |
| 29 | 48 |
| 30 | 46 |
| 31 | 43 |
Humidity in October
Most of October feels miserable — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, October lands in the miserable band about 89% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Muggy (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
| Oppressive (%) | 14 | 14 | 13 | 13 | 13 | 12 | 12 | 12 | 11 | 11 | 11 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | 10 | 11 | 11 | 12 | 13 |
| Miserable (%) | 86 | 86 | 87 | 87 | 87 | 88 | 88 | 88 | 89 | 89 | 89 | 90 | 90 | 90 | 91 | 91 | 91 | 91 | 91 | 91 | 91 | 91 | 91 | 91 | 91 | 90 | 90 | 89 | 89 | 87 | 86 |
| Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|
| 1 | 0 | 14 | 86 |
| 2 | 0 | 14 | 86 |
| 3 | 0 | 13 | 87 |
| 4 | 0 | 13 | 87 |
| 5 | 0 | 13 | 87 |
| 6 | 0 | 12 | 88 |
| 7 | 0 | 12 | 88 |
| 8 | 0 | 12 | 88 |
| 9 | 0 | 11 | 89 |
| 10 | 0 | 11 | 89 |
| 11 | 0 | 11 | 89 |
| 12 | 0 | 10 | 90 |
| 13 | 0 | 10 | 90 |
| 14 | 0 | 10 | 90 |
| 15 | 0 | 9 | 91 |
| 16 | 0 | 9 | 91 |
| 17 | 0 | 9 | 91 |
| 18 | 0 | 9 | 91 |
| 19 | 0 | 9 | 91 |
| 20 | 0 | 9 | 91 |
| 21 | 0 | 9 | 91 |
| 22 | 0 | 9 | 91 |
| 23 | 0 | 9 | 91 |
| 24 | 0 | 9 | 91 |
| 25 | 0 | 9 | 91 |
| 26 | 0 | 10 | 90 |
| 27 | 0 | 10 | 90 |
| 28 | 0 | 11 | 89 |
| 29 | 0 | 11 | 89 |
| 30 | 1 | 12 | 87 |
| 31 | 1 | 13 | 86 |
Wind in October
Winds average 7 km/h in October, the calmest month.
Across October, daily wind ranges from about 7 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 7 | calm |
| 2 | 7 | calm |
| 3 | 7 | calm |
| 4 | 7 | calm |
| 5 | 7 | calm |
| 6 | 7 | calm |
| 7 | 7 | calm |
| 8 | 7 | calm |
| 9 | 7 | calm |
| 10 | 7 | calm |
| 11 | 7 | calm |
| 12 | 7 | calm |
| 13 | 7 | calm |
| 14 | 7 | calm |
| 15 | 7 | calm |
| 16 | 7 | calm |
| 17 | 7 | calm |
| 18 | 7 | calm |
| 19 | 7 | calm |
| 20 | 7 | calm |
| 21 | 7 | calm |
| 22 | 7 | calm |
| 23 | 7 | calm |
| 24 | 7 | calm |
| 25 | 7 | calm |
| 26 | 7 | calm |
| 27 | 7 | calm |
| 28 | 7 | calm |
| 29 | 7 | calm |
| 30 | 7 | calm |
| 31 | 7 | calm |
Sunrise & sunset in October
Daylight runs from about 11 h 54 min at the start of October to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 18 minutes over October. Sunrise moves from 6:55 AM to 6:59 AM, and sunset from 6:48 PM to 6:33 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 11.9 | 11.9 | 11.9 | 11.9 | 11.9 | 11.8 | 11.8 | 11.8 | 11.8 | 11.8 | 11.8 | 11.8 | 11.8 | 11.8 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 |
| Sunrise (AM) | 6:55 | 6:55 | 6:55 | 6:55 | 6:55 | 6:55 | 6:55 | 6:55 | 6:55 | 6:55 | 6:55 | 6:55 | 6:55 | 6:55 | 6:55 | 6:55 | 6:56 | 6:56 | 6:56 | 6:56 | 6:56 | 6:56 | 6:57 | 6:57 | 6:57 | 6:57 | 6:57 | 6:58 | 6:58 | 6:58 | 6:59 |
| Sunset (PM) | 6:48 | 6:48 | 6:47 | 6:46 | 6:46 | 6:45 | 6:44 | 6:44 | 6:43 | 6:43 | 6:42 | 6:42 | 6:41 | 6:40 | 6:40 | 6:39 | 6:39 | 6:38 | 6:38 | 6:37 | 6:37 | 6:37 | 6:36 | 6:36 | 6:35 | 6:35 | 6:35 | 6:34 | 6:34 | 6:34 | 6:33 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.9 | 6:55 | 6:48 |
| 2 | 11.9 | 6:55 | 6:48 |
| 3 | 11.9 | 6:55 | 6:47 |
| 4 | 11.9 | 6:55 | 6:46 |
| 5 | 11.9 | 6:55 | 6:46 |
| 6 | 11.8 | 6:55 | 6:45 |
| 7 | 11.8 | 6:55 | 6:44 |
| 8 | 11.8 | 6:55 | 6:44 |
| 9 | 11.8 | 6:55 | 6:43 |
| 10 | 11.8 | 6:55 | 6:43 |
| 11 | 11.8 | 6:55 | 6:42 |
| 12 | 11.8 | 6:55 | 6:42 |
| 13 | 11.8 | 6:55 | 6:41 |
| 14 | 11.8 | 6:55 | 6:40 |
| 15 | 11.7 | 6:55 | 6:40 |
| 16 | 11.7 | 6:55 | 6:39 |
| 17 | 11.7 | 6:56 | 6:39 |
| 18 | 11.7 | 6:56 | 6:38 |
| 19 | 11.7 | 6:56 | 6:38 |
| 20 | 11.7 | 6:56 | 6:37 |
| 21 | 11.7 | 6:56 | 6:37 |
| 22 | 11.7 | 6:56 | 6:37 |
| 23 | 11.7 | 6:57 | 6:36 |
| 24 | 11.6 | 6:57 | 6:36 |
| 25 | 11.6 | 6:57 | 6:35 |
| 26 | 11.6 | 6:57 | 6:35 |
| 27 | 11.6 | 6:57 | 6:35 |
| 28 | 11.6 | 6:58 | 6:34 |
| 29 | 11.6 | 6:58 | 6:34 |
| 30 | 11.6 | 6:58 | 6:34 |
| 31 | 11.6 | 6:59 | 6:33 |
Solar energy in October
Average shortwave solar energy reaching the ground each day in October, about 4.93 kWh/m².
For context, solar energy here swings from a low near 4.14 kWh/m² to a high of 7.03 kWh/m² in April across the year — October's 4.93 kWh/m² falls in the middle.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 4.7 | 4.7 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.9 | 4.9 | 4.9 | 4.9 | 4.9 | 4.9 | 4.9 | 5.0 | 5.0 | 5.0 | 5.0 | 5.0 | 5.0 | 5.0 | 5.1 | 5.1 | 5.1 | 5.1 | 5.2 | 5.2 |
| Level | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 4.7 | Bright |
| 2 | 4.7 | Bright |
| 3 | 4.8 | Bright |
| 4 | 4.8 | Bright |
| 5 | 4.8 | Bright |
| 6 | 4.8 | Bright |
| 7 | 4.8 | Bright |
| 8 | 4.8 | Bright |
| 9 | 4.8 | Bright |
| 10 | 4.8 | Bright |
| 11 | 4.8 | Bright |
| 12 | 4.9 | Bright |
| 13 | 4.9 | Bright |
| 14 | 4.9 | Bright |
| 15 | 4.9 | Bright |
| 16 | 4.9 | Bright |
| 17 | 4.9 | Bright |
| 18 | 4.9 | Bright |
| 19 | 5.0 | Bright |
| 20 | 5.0 | Bright |
| 21 | 5.0 | Bright |
| 22 | 5.0 | Bright |
| 23 | 5.0 | Bright |
| 24 | 5.0 | Bright |
| 25 | 5.0 | Bright |
| 26 | 5.1 | Bright |
| 27 | 5.1 | Bright |
| 28 | 5.1 | Bright |
| 29 | 5.1 | Bright |
| 30 | 5.2 | Bright |
| 31 | 5.2 | Bright |
Hazard calendar for Bissau
In October, Bissau sits inside its atlantic hurricane and dust season. The full year is below, with each hazard's peak months called out.
Bissau sits in the Atlantic hurricane belt; the season peaks August–October.
Bissau's monsoon runs July–September, when most of the year's rain falls.
Bissau sees seasonal dust haze (February–June), heaviest in June.
Is October a good time to visit Bissau?
Our two travel scores rate October for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
October is a weaker month for outdoor sightseeing in Bissau.
What to pack for Bissau in October
From October's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In October, Bissau sees daytime highs around 31°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 22 days see rain.
Sea temperature near Bissau in October
The nearest coast averages about 29°C in October — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 27 km away) is warmest in November at about 29°C and coldest in February near 25°C.
The water stays above 20°C all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 25 | 25 | 26 | 27 | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 27 |
| Comfort | Warm | Warm | Warm | Warm | Warm | Tropical | Tropical | Warm | Tropical | Tropical | Tropical | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 25 | Warm |
| Feb | 25 | Warm |
| Mar | 26 | Warm |
| Apr | 27 | Warm |
| May | 28 | Warm |
| Jun | 28 | Tropical |
| Jul | 28 | Tropical |
| Aug | 28 | Warm |
| Sep | 28 | Tropical |
| Oct | 29 | Tropical |
| Nov | 29 | Tropical |
| Dec | 27 | Warm |
UV index in Bissau in October
Clear-sky midday UV in October peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Bissau peaks around August 18 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 7 (very high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 8 | 11 | 13 | 11 | 11 | 12 | 12 | 13 | 12 | 11 | 9 | 7 |
| Level | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 8 | Very high |
| Feb | 11 | Extreme |
| Mar | 13 | Extreme |
| Apr | 11 | Extreme |
| May | 11 | Extreme |
| Jun | 12 | Extreme |
| Jul | 12 | Extreme |
| Aug | 13 | Extreme |
| Sep | 12 | Extreme |
| Oct | 11 | Extreme |
| Nov | 9 | Very high |
| Dec | 7 | Very high |
Air quality in Bissau in October
Average fine-particle pollution (PM2.5) through the year — so you can see where October falls, not just the annual average.
Air quality in Bissau is worst in February — around 86 µg/m³ PM2.5 (unhealthy), about 5.5× the cleanest month (August, 16 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 63 | 86 | 76 | 51 | 53 | 50 | 24 | 16 | 18 | 35 | 45 | 58 |
| Level | Unhealthy | Unhealthy | Unhealthy | Poor | Poor | Poor | Moderate | Moderate | Moderate | Moderate | Poor | Unhealthy |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 63 | Unhealthy |
| Feb | 86 | Unhealthy |
| Mar | 76 | Unhealthy |
| Apr | 51 | Poor |
| May | 53 | Poor |
| Jun | 50 | Poor |
| Jul | 24 | Moderate |
| Aug | 16 | Moderate |
| Sep | 18 | Moderate |
| Oct | 35 | Moderate |
| Nov | 45 | Poor |
| Dec | 58 | Unhealthy |
Where is Bissau?
Bissau sits at 11.9°N, 15.6°W, 13 m above sea level, in Guinea-Bissau. The nearest listed city is Sintra-Nema, 0.0 km away.
Topography around Bissau
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Bissau.
Within 3 km, the terrain around Bissau has only modest variations in elevation — a maximum elevation change of 43 m around an average of 14 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 48 m; within 80 km, only modest variations in elevation — a maximum elevation change of 61 m.
The land around Bissau is covered by artificial surfaces (63%) within 3 km, water (43%) within 16 km, and trees (41%) and water (32%) within 80 km.
Guinea-Bissau travel facts
- Travel advisory
- Level 3
- Reconsider Travel
- Power plugs
- Type C / E / F
- 220 V · 50 Hz
- Prices
- ≈ 34% of US
- price level, 2025
- GDP per capita
- $1,124
- 2025
- Safe drinking water
- 24%
- of population, 2024
- Homicide rate
- 1.1
- per 100k, 2017
- Road deaths
- 32.2
- per 100k/yr, 2019
- Income group
- Low
- World Bank
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Bissau (11.8636°, -15.5977°, elevation 13 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).