August · Guinea-Bissau
Best time to visit Bissau in August Weather, crowds & prices
Weather in Bissau in August
Average temperature 26°C, 498 mm of rain, about 20 days with 6+ hours of sunshine and 87% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
August score
3.4/10
Ranked #11 of 12 months
- Avg temp
- 26°C
- Rainfall
- 498 mm
- Humidity
- 87%
- Days with 6h+ sun
- 20
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
August in Bissau scores 3.4/10 for sightseeing and cultural travel - ranked #11 of 12. Expect around 26°C, 498 mm of rain, and roughly 20 days with 6+ hours of sunshine this month.
Bissau is Guinea-Bissau's low-rise capital, with Portuguese-era streets, markets, a working port, cashew culture, and access to the Bijagós archipelago.
August in Bissau — off-season conditions
At 26°C (79°F) this is comfortable city weather in August, with sightseeing easiest before lunch and after the afternoon peak.
This is the year's wettest stretch at 498 mm, but with about 20 days with 6+ hours of sunshine it is not a total loss; an indoor fallback covers the risk.
That is 3.4/10 on the same scale — 11th of 12 months, versus 8.6/10 for the best month here.
Pack light clothing, a hat and real sun protection, a proper rain shell rather than an umbrella.
Expect low-season pricing, and crowds are light for this destination.
If your dates are flexible, December is materially better in Bissau — 5.2 points higher on the same scale.
Frequently asked
- What is the weather like in Bissau in August?
- In August, Bissau averages 26°C, 498 mm of rain, and about 20 days with 6+ hours of sunshine. Its climate-comfort score is 3.4/10.
- Is August a good time to visit Bissau?
- August earns a 3.4/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Bissau in August?
- Expect about 498 mm of rain in August. Average humidity is 87% and there are about 20 days with 6+ hours of sunshine.
Curated in Bissau
Tickets & experiences
Things to do in Bissau
Bissau, Guinea-Bissau. Live activities and tours from GetYourGuide, matched to this destination.