Contents
- Weather in October
- Frequently asked questions
- Average temperature in October
- Average pressure in October
- Average wind speed in October
- Average humidity in October
- Average rainfall in October
- Average rainfall days in October
- Average daylight in October
- Average sunshine in October
- Average sunshine days in October
- Average UV index in October
- Average cloud cover in October
- Average visibility in October
October
Weather in October
Temperature
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). October's nights observe an average temperature of 25.7°C (78.3°F).Heat index
The heat index value during October is evaluated at a burning hot 45°C (113°F). Remain alert: Heat exhaustion and heat cramps are predicted. Extended effort can lead to heatstroke.When assessing, remember that heat index measurements are for light winds and shaded spots. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is a value derived by merging air temperature with the humidity to convey how the climate feels. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. When relative humidity increases, the body's capacity to evaporate heat decreases, leading to a heightened sense of warmth. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.
Humidity
The average relative humidity in October is 74%.Rainfall
In October, the rain falls for 15.6 days. Throughout October, 50mm (1.97") of precipitation is accumulated. In São João, during the entire year, the rain falls for 107.5 days and collects up to 726mm (28.58") of precipitation.Daylight
In São João, Guinea-Bissau, the average length of the day in October is 11h and 52min.On the first day of October in São João, sunrise is at 06:50 and sunset at 18:51. On the last day of the month, sunrise is at 06:53 and sunset at 18:36 GMT.
Sunshine
The average sunshine in October is 9.2h.UV index
January through December, with an average maximum UV index of 7, are months with the highest UV index. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the average person.Note: An average UV index of 7 in October transforms into this advice:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in São João in October?
What is the average humidity in October in São João?
How many days does it rain in October in São João?
How many hours of daylight does São João have in October?
What time are sunrise and sunset in October in São João?
How many hours of sunshine does São João have in October?
What are the months with the highest UV index in São João?
What are the months with the lowest UV index in São João?
What is the UV index reading in October in São João?
Average temperature in October
São João, Guinea-Bissau
- Average high temperature in October: 32.9°C
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).
- Average low temperature in October: 25.7°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 in October
São João, Guinea-Bissau
- Average pressure in October: 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 in October
São João, Guinea-Bissau
- Average wind speed in October: 9km/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 in October
São João, Guinea-Bissau
- Average humidity in October: 74%
The month with the highest relative humidity is August (82%).
The month with the lowest relative humidity is January (32%).
Average rainfall in October
São João, Guinea-Bissau
- Average rainfall in October: 50mm
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 in October
São João, Guinea-Bissau
- Average rainfall days in October: 15.6 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 in October /
Average sunshine in October
São João, Guinea-Bissau
- Average daylight in October: 11h and 5min
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 October: 9h and 1min
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 in October
São João, Guinea-Bissau
- Average sunshine days in October: 13.2 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 in October
São João, Guinea-Bissau
- Average UV index in October: 7
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 in October
São João, Guinea-Bissau
- Average cloud cover in October: 25
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 in October
São João, Guinea-Bissau
- Average visibility in October: 10km
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).
