September weather forecast
Alabato, Guinea-Bissau

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Weather in September

September marks the softening blow of the monsoon with rainfall descending to 145mm (5.71") in Alabato. This gradual tapering off signals the retreat of heavier downpours, but the moisture-laden atmosphere remains. Concurrently, the diminishing rain is succeeded by a rise in the amount of daily sunshine, presaging brighter days ahead. Hence, despite the reduced showers, the high humidity sustains the overall wetness, well-bound into the sand and soil. With the arrival of October, a much sharper decline in precipitation forecasts drier conditions.

Temperature

The transition from August to September in Alabato, Guinea-Bissau, sees average high-temperatures adjusting to a still tropical 31.7°C (89.1°F), from a not significantly different 31°C (87.8°F). Alabato experiences a mean temperature of 23°C (73.4°F) during September nights.

Heat index

September's heat index is estimated at a burning hot 45°C (113°F). Stay vigilant: Heat cramps along with heat exhaustion are expected. Heatstroke may follow prolonged exertion.
It is important to note that the heat index values are for shaded areas and light wind scenarios. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is an estimation of the warmth sensation when considering humidity levels. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly relevant to children. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. When the level of relative humidity is elevated, evaporation diminishes, causing more warmth to be retained in the body than in dry air. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

In September, the average relative humidity is 85%.

Rainfall

In September, the rain falls for 23.9 days. Throughout September, 145mm (5.71") of precipitation is accumulated. In Alabato, during the entire year, the rain falls for 107.6 days and collects up to 593mm (23.35") of precipitation.

Daylight

In September, the average length of the day is 12h and 12min.
On the first day of September, sunrise is at 06:50 and sunset at 19:11. On the last day of the month, sunrise is at 06:50 and sunset at 18:51 GMT.

Sunshine

In Alabato, the average sunshine in September is 7.2h.

UV index

In Alabato, the average daily maximum UV index in September is 7. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum UV index, 7 during September, leads to the following recommendations:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. Stay sun-safe with clothing that is both closely woven and worn loosely.

Frequently asked questions

How hot is it in Alabato in September?

September temperatures in Alabato, Guinea-Bissau, vary between a high-temperature of 31.7°C (89.1°F) and a low-temperature of 23°C (73.4°F). In September, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is estimated at 45°C (113°F).

What is the average humidity in September in Alabato?

The average relative humidity in September in Alabato is 85%.

How much does it rain in Alabato in September?

In Alabato, in September, during 23.9 rainfall days, 145mm (5.71") of precipitation is typically accumulated.

What is the average length of the day in September in Alabato?

The average day length in September in Alabato is 12h and 12min.

What time are sunrise and sunset in September in Alabato?

In September, on the first day of the month, sunrise is at 06:50 and sunset at 19:11. On the last day of the month, in Alabato, sunrise is at 06:50 and sunset at 18:51 GMT.

How many hours of sunshine does Alabato have in September?

In September, the average sunshine duration is 7.2h.

How high is the UV index in September in Alabato?

The average daily maximum UV index in September in Alabato is 7. A UV Index of 6 to 7 symbolizes a high health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Alabato, Guinea-Bissau

Average temperature in September - Alabato, Guinea-Bissau
  • Average high temperature in September: 31.7°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 September: 23°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 September
Alabato, Guinea-Bissau

Average pressure in September - Alabato, Guinea-Bissau
  • Average pressure in September: 1012.1mbar

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 September
Alabato, Guinea-Bissau

Average wind speed in September - Alabato, Guinea-Bissau
  • Average wind speed in September: 6.2km/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 September
Alabato, Guinea-Bissau

Average humidity in September - Alabato, Guinea-Bissau
  • Average humidity in September: 85%

The month with the highest relative humidity is August (86%).
The month with the lowest relative humidity is January (19%).

Average rainfall in September
Alabato, Guinea-Bissau

Average rainfall in September - Alabato, Guinea-Bissau
  • Average rainfall in September: 145mm

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 September
Alabato, Guinea-Bissau

Average rainfall days in September - Alabato, Guinea-Bissau
  • Average rainfall days in September: 23.9 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 September /
Average sunshine in September
Alabato, Guinea-Bissau

Average daylight in September / Average sunshine in September - Alabato, Guinea-Bissau
  • Average daylight in September: 12h and 1min

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 September: 7h and 1min

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 September
Alabato, Guinea-Bissau

Average sunshine days in September - Alabato, Guinea-Bissau
  • Average sunshine days in September: 3.8 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 September
Alabato, Guinea-Bissau

Average UV index in September - Alabato, Guinea-Bissau
  • Average UV index in September: 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 September
Alabato, Guinea-Bissau

Average cloud cover in September - Alabato, Guinea-Bissau
  • Average cloud cover in September: 54

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 September
Alabato, Guinea-Bissau

Average visibility in September - Alabato, Guinea-Bissau
  • Average visibility in September: 7km

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).

Alabato, Guinea-Bissau

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