The month in detail
What to expect in May
May is peak dry season in Bissau. The air is warm and humidity more bearable than in the rainy season. Rain is virtually absent (5% of days) — ideal for planning without a backup. Not the best window, but acceptable if dates are constrained. December (8.7/10) is significantly better if possible.
May ranks 3 out of 12 months in Bissau. Compared to April: 5 pts more rainy days, −1.0h of sun per day.
This month's conditions
What it's like in May
Feels like
muggy at times
20°
Daylight
12.5h of daylight
Compare
Is May the right month?
The best month in Bissau is December (8.7/10), 2.9 pts higher than May.
Book
Plan your trip
Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.
Stay
Hotels & rentals · Bissau
Expedia →
Activities
Tours, tickets, experiences
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Flights
Multi-airline comparator
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🎟️ Activities & tours · Bissau
GetYourGuide selection · free cancellation
Practical info
What you need to know before you go
Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a tropical stay.
Country · Guinea-Bissau
🗣️LanguagePortuguese
💶CurrencyWest African CFA Franc (FCFA)
🚗DrivingRight-hand
🛡️SafetyVery safe · 1/5
💰Cost of living ⓘCheap · 2/5
🌡️ Climate
🌍Climate typeTropical
📈Climate trend ⓘStable
🔥Hottest monthFebruary · 34°C
❄️Coolest monthAugust · 28°C
🌧️Rainiest month ⓘAugust · 78%
🏝️ Tropical stay
🌞Dry season ⓘMay → Sep
🌧️Wet season ⓘDec → Mar
🌀Cyclones ⓘSeason Nov-Apr
Explore
Other destinations in May
If May doesn't convince you for this destination, compare with others.
Location
Where is Bissau ?
Global position + regional geographic context.
🌍 World
🔍 Geographic context
Guinea-BissauTropical climate with a 8.7 → 4.6 gap between best and worst month. 10 years of ERA5 data to choose by project.
11.86°N · 15.60°W
Questions
Frequently asked questions
What is the best time to visit Bissau?
December is the best month with 32.0°C highs, 22.0°C lows, 8.0h of sunshine and 0.0% rainy days. The months of December & January offer comparable conditions.
How many hours of sunshine does Bissau get in December?
Bissau averages 8.0 sunshine hours per day in December. It is the sunniest month with a climate score of 8.2/10.
What is the rainiest month in Bissau?
August is the most unfavourable month with August has the lowest climate score of the year and the lowest climate score of the year.
What are the temperatures at night in Bissau in December?
In December, overnight lows reach 22.0°C, while afternoon highs average 32.0°C.
Is Bissau good in winter?
In winter (December-February), Bissau scores 7.1/10 on average — Decent period conditions for cultural visits.. The best month overall remains December with a score of 8.2/10.
When should you avoid Bissau?
August is the most difficult month to visit Bissau, with August has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.