Climate and monthly weather forecastSão João, Guinea-Bissau
Climate and monthly weather forecast
Weather in January
January, like December, is another hot winter month in São João, Guinea-Bissau, with an average temperature ranging between max 34.2°C (93.6°F) and min 21.8°C (71.2°F). January begins with an average high-temperature of a still tropical 34.2°C (93.6°F), reflecting close similarity to the preceding month. Weather in January »Weather in February
February, the last month of the winter in São João, is also a hot month, with an average temperature fluctuating between 22.1°C (71.8°F) and 34.9°C (94.8°F). São João marks the onset of February with an average high-temperature of a still hot 34.9°C (94.8°F), a subtle shift from January's 34.2°C (93.6°F). Weather in February »Weather in March
The first month of the spring, March, is a torrid month in São João, Guinea-Bissau, with an average temperature ranging between max 35.5°C (95.9°F) and min 22.8°C (73°F). In São João, temperatures reach their average annual highs in March, measuring 35.5°C (95.9°F) and a minimum average of 22.8°C (73°F). The average heat index in March is evaluated at a blistering 40°C (104°F). Weather in March »Weather in April
April, like March, in São João, Guinea-Bissau, is another torrid spring month, with an average temperature fluctuating between 35°C (95°F) and 23.5°C (74.3°F). The shift into April reveals an average high-temperature of a still fiery hot 35°C (95°F), closely mirroring March's climate. Weather in April »Weather in May
The last month of the spring, May, is another hot month in São João, Guinea-Bissau, with an average temperature varying between 24.4°C (75.9°F) and 33.7°C (92.7°F). May's arrival brings an average high-temperature of a hot 33.7°C (92.7°F), slightly deviating from April's 35°C (95°F). Weather in May »Weather in June
The first month of the summer, June, is still a tropical month in São João, Guinea-Bissau, with an average temperature varying between 26°C (78.8°F) and 32.8°C (91°F). São João, Guinea-Bissau, signifies an average high-temperature of a still tropical 32.8°C (91°F) in June, closely mirroring the 33.7°C (92.7°F) of May. Weather in June »Weather in July
July, like June, is another hot summer month in São João, Guinea-Bissau, with an average temperature ranging between max 30.7°C (87.3°F) and min 25.4°C (77.7°F). São João experiences an average high-temperature of a still tropical 30.7°C (87.3°F) with the onset of July, subtly varied from June's 32.8°C (91°F). Weather in July »Weather in August
August, the last month of the summer in São João, is also a moderately hot month, with temperature in the range of an average low of 25°C (77°F) and an average high of 29.6°C (85.3°F). The coldest temperatures occur during August, when averages reach a peak of 29.6°C (85.3°F) and a low of 25°C (77°F). The heat index in August is evaluated at a torrid 37°C (98.6°F). Weather in August »Weather in September
The first month of the autumn, September, is a hot month in São João, Guinea-Bissau, with an average temperature ranging between min 25°C (77°F) and max 30.5°C (86.9°F). With the advent of September, São João's high-temperatures adjust to a hot 30.5°C (86.9°F), closely aligning with the preceding month. Weather in September »Weather in October
October, the same as September, in São João, Guinea-Bissau, is another tropical autumn month, with an average temperature varying between 25.7°C (78.3°F) and 32.9°C (91.2°F). The shift into October records an average high-temperature of a still hot 32.9°C (91.2°F), subtly varied from September's 30.5°C (86.9°F). Weather in October »Weather in November
The last month of the autumn, November, is another hot month in São João, Guinea-Bissau, with temperature in the range of an average low of 24.7°C (76.5°F) and an average high of 34.3°C (93.7°F). In November, São João notes an average high-temperature of a still tropical 34.3°C (93.7°F), hardly different from the preceding month. Weather in November »Weather in December
December, the first month of the winter in São João, is still a hot month, with an average temperature ranging between min 22.5°C (72.5°F) and max 34°C (93.2°F). São João experiences a transition to a still hot 34°C (93.2°F) in average high-temperatures with the arrival of December, not greatly differing from November's 34.3°C (93.7°F). Weather in December »Updated: Feb 5, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
With an average relative humidity of 32%, January is the least humid month in São João, Guinea-Bissau.
In São João, rain does not fall in January and February.
Throughout the year, in São João, there are 107.5 rainfall days, and 726mm (28.58") of precipitation is accumulated.
January through December, with an average maximum UV index of 7, are months with the highest UV index in São João.
The months with the lowest UV index in São João are January through December, with an average maximum UV index of 7.
The highest temperatures are recorded in March, with averages reaching a high of 35.5°C (95.9°F) and a low of 22.8°C (73°F).
Months with rainfall are March through December.
The months with the most sunshine are March through May, with an average of 9.9h of sunshine.
With an average of 12h and 48min of daylight, June has the longest days of the year in São João.
São João experiences its average lowest temperatures in August, reaching a peak of 29.6°C (85.3°F) and a minimum of 25°C (77°F).
The most humid month in São João, Guinea-Bissau, is August, with an average relative humidity of 82%.
The month with the most rainfall in São João is August, when the rain falls for 26.9 days and typically aggregates up to 270mm (10.63") of precipitation.
The month with the least sunshine in São João is August, with an average of 6.1h of sunshine.
December has the shortest days of the year, with an average of 11h and 30min of daylight.
São João, Guinea-Bissau, does not utilize Daylight Saving Time (DST). GMT timezone is used over the entire year.
Average temperature
São João, Guinea-Bissau
The warmest month (with the highest average high temperature) is March (35.5°C).
The month with the lowest average high temperature is August (29.6°C).
The month with the highest average low temperature is June (26°C).
The coldest month (with the lowest average low temperature) is January (21.8°C).
Average pressure
São João, Guinea-Bissau
- Average pressure in January:
1011.5mbar - Average pressure in February:
1010.5mbar - Average pressure in March:
1010.1mbar - Average pressure in April:
1010.1mbar - Average pressure in May:
1011.1mbar - Average pressure in June:
1012.6mbar
- Average pressure in July:
1012.9mbar - Average pressure in August:
1012.4mbar - Average pressure in September:
1012.2mbar - Average pressure in October:
1011.2mbar - Average pressure in November:
1010.6mbar - Average pressure in December:
1011.2mbar
The month with the highest atmospheric pressure is July (1012.9mbar).
The months with the lowest atmospheric pressure are March and April (1010.1mbar).
Average wind speed
São João, Guinea-Bissau
- Average wind speed in January:
11.2km/h - Average wind speed in February:
11.5km/h - Average wind speed in March:
11.6km/h - Average wind speed in April:
12.1km/h - Average wind speed in May:
13.1km/h - Average wind speed in June:
13.2km/h
- Average wind speed in July:
12.1km/h - Average wind speed in August:
12.1km/h - Average wind speed in September:
9.7km/h - Average wind speed in October:
9km/h - Average wind speed in November:
9km/h - Average wind speed in December:
10.6km/h
The windiest month (with the highest average wind speed) is June (13.2km/h).
The calmest months (with the lowest average wind speed) are October and November (9km/h).
Average humidity
São João, Guinea-Bissau
The month with the highest relative humidity is August (82%).
The month with the lowest relative humidity is January (32%).
Average rainfall
São João, Guinea-Bissau
The wettest month (with the highest rainfall) is August (270mm).
The driest months (with the least rainfall) are January and February (0mm).
Average rainfall days
São João, Guinea-Bissau
- Average rainfall days in January:
0.3 days - Average rainfall days in February:
0.4 days - Average rainfall days in March:
0.7 days - Average rainfall days in April:
2.2 days - Average rainfall days in May:
3.8 days - Average rainfall days in June:
9.2 days
- Average rainfall days in July:
23.4 days - Average rainfall days in August:
26.9 days - Average rainfall days in September:
20.7 days - Average rainfall days in October:
15.6 days - Average rainfall days in November:
3.6 days - Average rainfall days in December:
0.7 days
The month with the highest number of rainy days is August (26.9 days).
The month with the least rainy days is January (0.3 days).
Average daylight / Average sunshine
São João, Guinea-Bissau
- Average daylight in January:
11h and 30min - Average daylight in February:
11h and 48min - Average daylight in March:
12h and 6min - Average daylight in April:
12h and 24min - Average daylight in May:
12h and 42min - Average daylight in June:
12h and 48min
- Average daylight in July:
12h and 42min - Average daylight in August:
12h and 30min - Average daylight in September:
12h and 12min - Average daylight in October:
11h and 54min - Average daylight in November:
11h and 36min - Average daylight in December:
11h and 30min
The month with the longest days is June (Average daylight: 12h and 48min).
The month with the shortest days is December (Average daylight: 11h and 30min).
- Average sunshine in January:
9h and 42min - Average sunshine in February:
9h and 48min - Average sunshine in March:
9h and 54min - Average sunshine in April:
9h and 54min - Average sunshine in May:
9h and 54min - Average sunshine in June:
9h and 0min
- Average sunshine in July:
6h and 54min - Average sunshine in August:
6h and 6min - Average sunshine in September:
7h and 30min - Average sunshine in October:
9h and 12min - Average sunshine in November:
9h and 42min - Average sunshine in December:
9h and 42min
The months with the most sunshine are March, April and May (Average sunshine: 9h and 54min).
The month with the least sunshine is August (Average sunshine: 6h and 6min).
Average sunshine days
São João, Guinea-Bissau
- Average sunshine days in January:
30.7 days - Average sunshine days in February:
27.6 days - Average sunshine days in March:
30.2 days - Average sunshine days in April:
27.8 days - Average sunshine days in May:
25.8 days - Average sunshine days in June:
20.2 days
- Average sunshine days in July:
5.6 days - Average sunshine days in August:
2.9 days - Average sunshine days in September:
8 days - Average sunshine days in October:
13.2 days - Average sunshine days in November:
24.3 days - Average sunshine days in December:
29.8 days
The month with the most sunshine days is January (30.7 days).
The month with the least sunshine days is August (2.9 days).
Average UV index
São João, Guinea-Bissau
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
Average cloud cover
São João, Guinea-Bissau
The month with the most cloud cover is August (Cloud cover 57).
The months with the least cloud cover are March and April (Cloud cover 7).
Average visibility
São João, Guinea-Bissau
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (10km).
The months with the lowest visibility are July and August (9km).
