Bissau weather in October

October in Bissau: sweltering, rainy, with muggy air — a gamble, with 20 rainy days.

Updated September 2026 · climate normals from ERA5 reanalysis

Bissau🇬🇼 Guinea-Bissau · Sahel & Cabo Verde · City57
  1. 80Jan
  2. 70Feb
  3. 62Mar
  4. 59Apr
  5. 64May
  6. 67Jun
  7. 43Jul
  8. 45Aug
  9. 42Sep
  10. 57Oct
  11. 73Nov
  12. 82Dec

#9 of 12 months in Bissau · #1198 of 1413 destinations to visit in October · comfort 57/100 (tier D)

Days
33°C
Nights
24°C
Wet days
20
Sun
9.6 h
Humidity
84%
Daylight
12 h
Bissau, Guinea-Bissau
Photo: Original: Colleen Taugher from Lewiston Idaho, U · CC BY 2.0

Traveller notes on Bissau in October

Other months in Bissau

Forum posters are direct that July through October covers Guinea-Bissau's rainy season, generally recommending travelers avoid this stretch if possible, with August and October singled out as the worst months specifically. Posters describe Bissau's roads, already full of potholes, becoming genuinely hazardous during the rains, with real flooding a possibility for anyone staying in the city, and rain boots recommended as practical footwear given how unpredictable the ground conditions get. Posters consistently point to November instead as a better-regarded month, offering both less rainfall and less oppressive heat than the peak rainy months. Posters generally rate July as one of the more challenging months to visit Bissau, heavy rain and difficult road conditions the main obstacles, with November a clearly preferred alternative just a few months later.
Tripadvisor community · July · 1 month ago · Read more on Tripadvisor ↗
Forum posters describe the tail end of the year, heading toward November, as a good window for Guinea-Bissau specifically because rainfall drops off and the worst of the summer heat eases - a useful marker that January, further into that same dry stretch, should carry the pattern forward with even less rain risk. Posters also note that by the end of the rainy season the mosquito population drops off drastically, a practical upside of visiting during this drier part of the year. Given how few detailed trip reports exist for Bissau specifically, posters' discussion tends to center more on safety and general travel logistics than granular weather detail, though the broader dry-season framing for this stretch of the calendar is consistent.
Tripadvisor community · January · 1 month ago · Read more on Tripadvisor ↗

Add your own note from Bissau's card on the map.

Bissau climate normals — October

Daytime high33°C / 91°F🔥 sweltering
Nighttime low24°C / 76°F
Feels like (high)39°C / 102°F
Sea temperature31°C / 87°F♨️ bath-warm
Rainfall146 mm / 5.7 in🌧 rainy
Rainy days20 days
Humidity84%💦 very humid
Dew point24°C / 76°F
Sunshine9.6 h/day
Daylight11.9 h
Wind11 km/h / 7 mph
Air quality (US AQI)61🙂 moderate

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

Crowds in Bissau in October

How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.

Shoulder seasonschool holidays in 4 of the markets that fill it, an ordinary month(estimated)

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Peak crowdsBusyShoulder seasonQuiet

Best months for Bissau's weather

Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).

Fair weatherBissau's weather peaks November–January, best around December.

JFMAMJJASOND

Best weatherFair weatherToughest weather

Where is Bissau?

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Bissau in October — FAQ

Is October a good time to visit Bissau?
October in Bissau: sweltering, rainy, with muggy air — a gamble, with 20 rainy days. It ranks #9 of 12 months for Bissau on SeasonMap's comfort score (57/100).
What is the weather like in Bissau in October?
In October, Bissau averages a daily high of 32.9°C and a low of 24.3°C, with about 145.8 mm of rain over roughly 19.6 rainy days.
What is the air quality in Bissau in October?
Bissau has a mean US Air Quality Index of about 61 in October.