December weather forecastMandem, Guinea-Bissau
December
Weather in December
The first month of the winter, December, is also a sweltering month in Mandem, Guinea-Bissau, with an average temperature varying between 35.7°C (96.3°F) and 19.5°C (67.1°F).Temperature
Stepping into December, Mandem records an average high-temperature of a still fiery hot 35.7°C (96.3°F), almost consistent with November. The December nights bear witness to a significant drop from the daytime highs, settling at an average temperature of 19.5°C (67.1°F).Humidity
The average relative humidity in December in Mandem is 25%.Rainfall
January through March and December are months without rainfall.Daylight
With an average of 11h and 24min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 07:04 and sunset at 18:32. On the last day of the month, sunrise is at 07:19 and sunset at 18:44 GMT.
Sunshine
In December, the average sunshine is 9.7h.UV index
In December, the average daily maximum UV index is 7. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A typical high UV index of 7 in December suggests the following recommendations:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Mandem, Guinea-Bissau
- Average high temperature in December: 35.7°C
The warmest month (with the highest average high temperature) is April (42.1°C).
The month with the lowest average high temperature is August (31°C).
- Average low temperature in December: 19.5°C
The month with the highest average low temperature is June (25.1°C).
The coldest month (with the lowest average low temperature) is January (19.3°C).
Average pressure in December
Mandem, Guinea-Bissau
- Average pressure in December: 1011.3mbar
The month with the highest atmospheric pressure is July (1012.6mbar).
The month with the lowest atmospheric pressure is April (1009.5mbar).
Average wind speed in December
Mandem, Guinea-Bissau
- Average wind speed in December: 8.4km/h
The windiest month (with the highest average wind speed) is February (9.4km/h).
The calmest month (with the lowest average wind speed) is October (6km/h).
Average humidity in December
Mandem, Guinea-Bissau
- Average humidity in December: 25%
The month with the highest relative humidity is August (86%).
The month with the lowest relative humidity is January (19%).
Average rainfall in December
Mandem, Guinea-Bissau
- Average rainfall in December: 0mm
The wettest month (with the highest rainfall) is August (206mm).
The driest months (with the least rainfall) are January, February, March and December (0mm).
Average rainfall days in December
Mandem, Guinea-Bissau
- Average rainfall days in December: 0.3 days
The month with the highest number of rainy days is August (27.7 days).
The month with the least rainy days is January (0.1 days).
Average daylight in December /
Average sunshine in December
Mandem, Guinea-Bissau
- Average daylight in December: 11h and 24min
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 24min).
- Average sunshine in December: 9h and 42min
The month with the most sunshine is April (Average sunshine: 10h and 0min).
The month with the least sunshine is August (Average sunshine: 5h and 54min).
Average sunshine days in December
Mandem, Guinea-Bissau
- Average sunshine days in December: 30.7 days
The month with the most sunshine days is January (30.9 days).
The month with the least sunshine days is August (2.5 days).
Average UV index in December
Mandem, Guinea-Bissau
- Average UV index in December: 7
The months with the highest UV index are March, April and May (UV index 8).
The month with the lowest UV index is August (UV index 6).
Average cloud cover in December
Mandem, Guinea-Bissau
- Average cloud cover in December: 12
The month with the most cloud cover is August (Cloud cover 63).
The month with the least cloud cover is March (Cloud cover 6).
Average visibility in December
Mandem, Guinea-Bissau
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, May, June, November and December (10km).
The months with the lowest visibility are August and September (7km).
