worldweather

Weather in Bissau - 14-day forecast

Detailed weather forecast for Bissau, Guinea-Bissau: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.
Forecast for the next days in Bissau
today🌧️ 29°💧 1.1 mm
Sun☁️ 29°💧 0.5 mm
Mon🌧️ 29°💧 33.4 mm
Tue🌧️ 28°💧 14.3 mm
Wed🌧️ 29°💧 1.7 mm
Thu🌧️ 29°💧 2.2 mm
Fri🌧️ 30°💧 1.8 mm
Sat🌧️ 30°💧 2.2 mm
Forecast vs 1991-2020 climate normal

How does the current forecast compare with normal?

We compare the coming days with weather usually observed at this time of year.

NASA POWER

Saturday 5 Sept in Bissau, the forecast high is 29°C. Typical daytime temperatures at this time of year range from 28°C to 29°C, so it will be warmer than usual. It is warmer than 82% of similar days.

29°Cwarmer than usual
usually 28°C–29°C
warmer than 82% of similar days
night: exceptionally warm rain: exceptionally dry wind: stronger than usual
29°Cnear normal
usually 28°C–29°C
night: exceptionally warm rain: exceptionally dry wind: stronger than usual
29°Cwarmer than usual
usually 28°C–30°C
warmer than 80% of similar days
night: exceptionally warm rain: exceptionally wet wind: typical
28°Cnear normal
usually 28°C–30°C
night: exceptionally warm rain: more rain than usual wind: stronger than usual
29°Cnear normal
usually 28°C–30°C
night: exceptionally warm rain: exceptionally dry wind: lighter than usual
29°Cnear normal
usually 28°C–30°C
night: exceptionally warm rain: exceptionally dry wind: typical
30°Cwarmer than usual
usually 28°C–30°C
warmer than 80% of similar days
night: exceptionally warm rain: exceptionally dry wind: stronger than usual

How warm was this week in previous years?

Each bar shows the average daily high during the same 7-day period in each year.

swipe to see more years →
25°30°35° 1981: 28°C1982: 29°C1983: 29°C1984: 29°C1985: 28°C1986: 29°C1987: 30°C1988: 29°C1989: 29°C1990: 29°C1991: 29°C1992: 29°C1993: 29°C1994: 29°C1995: 29°C1996: 29°C1997: 29°C1998: 29°C1999: 28°C2000: 29°C2001: 29°C2002: 28°C2003: 29°C2004: 29°C2005: 29°C2006: 28°C2007: 28°C2008: 29°C2009: 28°C2010: 28°C2011: 30°C2012: 28°C2013: 28°C2014: 29°C2015: 29°C2016: 29°C2017: 30°C2018: 28°C2019: 29°C2020: 28°C2021: 29°C2022: 29°C2023: 29°C2024: 29°C2025: 29°C 2026 forecast: 29°C current forecast 29°C 198119902000201020202026
cooler yearstypical rangewarmer years2026 forecastcurrent forecast

From 1981 to 2025, the 5-11 Sept period averaged 29°C by day. The coolest year was 2010 (28°C) and the warmest was 1987 (30°C). The current forecast averages 29°C - higher than in 87% of historical years.

Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window. The typical range is the 20th-80th percentile. This is not a city weather-station reading and does not change the current forecast. NASA POWER Daily API.

14-day forecast - Bissau

Bissau - 14-day weather forecast infographic

Bissau 30 & 45-day weather - long-range outlook

Next 16 days · forecast
29°
around 26° at night · days with rain: 15
Weeks 3-4 · avg for September
31°
around 24° at night · rain chance 54%
Weeks 5-7 · avg for October
32°
around 25° at night · rain chance 29%
The 30 & 45-day outlook for Bissau: the next 16 days are a numerical forecast updated daily - on average 29° by day and 26° at night. Further out we rely on multi-year climate averages: around 31° in September, and about 32° in October. Forecasts beyond two weeks are indicative only.

Day-by-day forecast for Bissau

Saturday5 September 2026
🌧️29°light rain
sunrise 06:52 · sunset 19:10 · night 27° · evening 28° · rain 1.13 mm · humidity 72% · wind 6 m/s · clouds 93%
Sunday6 September 2026
☁️29°overcast clouds
sunrise 06:52 · sunset 19:10 · night 27° · evening 27° · rain 0.48 mm · humidity 75% · wind 6 m/s · clouds 96%
Monday7 September 2026
🌧️29°heavy rain
sunrise 06:52 · sunset 19:09 · night 25° · evening 25° · rain 33.37 mm · humidity 72% · wind 4 m/s · clouds 68%
Tuesday8 September 2026
🌧️28°moderate rain
sunrise 06:52 · sunset 19:08 · night 25° · evening 26° · rain 14.29 mm · humidity 72% · wind 6 m/s · clouds 96%
Wednesday9 September 2026
🌧️29°light rain
sunrise 06:52 · sunset 19:08 · night 27° · evening 29° · rain 1.68 mm · humidity 69% · wind 3 m/s · clouds 95%
Thursday10 September 2026
🌧️29°light rain
sunrise 06:52 · sunset 19:07 · night 27° · evening 28° · rain 2.24 mm · humidity 76% · wind 4 m/s · clouds 28%
Friday11 September 2026
🌧️30°light rain
sunrise 06:52 · sunset 19:06 · night 27° · evening 29° · rain 1.78 mm · humidity 72% · wind 5 m/s · clouds 80%
Saturday12 September 2026
🌧️30°light rain
sunrise 06:52 · sunset 19:05 · night 27° · evening 29° · rain 2.2 mm · humidity 72% · wind 5 m/s · clouds 77%
Sunday13 September 2026
🌧️30°light rain
sunrise 06:52 · sunset 19:05 · night 27° · evening 28° · rain 1.48 mm · humidity 70% · wind 5 m/s · clouds 90%
Monday14 September 2026
🌧️29°moderate rain
sunrise 06:52 · sunset 19:04 · night 25° · evening 25° · rain 18.85 mm · humidity 75% · wind 5 m/s · clouds 99%
Tuesday15 September 2026
🌧️25°light rain
sunrise 06:52 · sunset 19:03 · night 25° · evening 26° · rain 13.46 mm · humidity 90% · wind 6 m/s · clouds 100%
Wednesday16 September 2026
🌧️28°light rain
sunrise 06:52 · sunset 19:03 · night 26° · evening 27° · rain 5.08 mm · humidity 75% · wind 5 m/s · clouds 85%
Thursday17 September 2026
🌧️29°moderate rain
sunrise 06:52 · sunset 19:02 · night 27° · evening 28° · rain 18.65 mm · humidity 73% · wind 4 m/s · clouds 93%
Friday18 September 2026
🌧️29°light rain
sunrise 06:52 · sunset 19:01 · night 26° · evening 28° · rain 2.44 mm · humidity 72% · wind 5 m/s · clouds 83%
Saturday19 September 2026
🌧️30°moderate rain
sunrise 06:52 · sunset 19:01 · night 27° · evening 27° · rain 9.63 mm · humidity 72% · wind 3 m/s · clouds 78%
Sunday20 September 2026
🌧️29°light rain
sunrise 06:52 · sunset 19:00 · night 28° · evening 28° · rain 3.13 mm · humidity 72% · wind 4 m/s · clouds 93%

UV index in Bissau - is it safe to sunbathe?

UV INDEX · 16-DAY FORECASTBissau03681111+8.3UV VERY HIGHtoday, daily maxSPF 50, long sleeves and shade between 10:00 and16:00.Unprotected fair skin may burn in about 25 min8Sat5.099Sun6.098Mon7.095Tue8.099Wed9.099Thu10.096Fri11.097Sat12.098Sun13.098Mon14.098Tue15.095Wed16.099Thu17.099Fri18.094Sat19.092Sun20.090-2 low3-5 moderate6-7 high8-10 very high11+ extremeworld-prices.com · 2026-09-05
Today the UV index in Bissau is 8 (very high) - unprotected fair skin can burn in about 25 minutes. SPF 50, long sleeves and shade between 10:00 and 16:00.

Sea temperature - Bissau

Water today
31°C
Week avg
31°C
Waves today
0.1 m
How's the water?
very warm
16-day sea temperature forecast:
5.09 31°C6.09 31°C7.09 31°C8.09 31°C9.09 31°C10.09 31°C11.09 31°C12.09 31°C13.09 31°C
Average sea temperature through the year:
Jan 26°CFeb 27°CMar 28°CApr 29°CMay 30°CJun 30°CJul 30°CAug 29°CSep 30°COct 31°CNov 31°CDec 27°C
Sea-surface temperature from marine models, updated daily. See also: where the sea is warmest right now.

Bissau weather through the year

Bissau - annual climate

Warmest, driest months on average: January, November, December.

Nearby and related places

ZiguinchorLaminFarafenniBanjulBakauBridgetownBasseterreDakhlaApiaGrand CaymanTorshavn

FAQ - Bissau weather

What is the weather like in Bissau today?
Today it is about 29° during the day and 27° at night, light rain.
How far ahead can I check the forecast for Bissau?
This page shows a detailed 14-day forecast plus the long-term monthly climate, so you can plan both a short trip and a holiday months ahead.