September weather forecast
Gao, Mali

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Weather in September

In September, Gao, Mali transitions from the high rainfall of August to drier conditions. Estimated temperature highs measure 39.3°C (102.7°F), presenting a marginal increase from the prior month. As the month progresses, daylight hours decrease subtly beneath clear skies. Decreased rainfall and increasing temperatures indicate a shift towards a drier climate. Overall, September offers a blend of post-monsoon calm and pre-summer conditions.

Temperature

The commencement of September records an average high-temperature of a still fiery hot 39.3°C (102.7°F), barely varying from August's 38.2°C (100.8°F). Gao's nighttime temperature during September is consistently averaged at a tropical 30.6°C (87.1°F).

Humidity

In Gao, the average relative humidity in September is 29%.

Rainfall

In Gao, during September, the rain falls for 6.2 days and regularly aggregates up to 11mm (0.43") of precipitation. In Gao, Mali, during the entire year, the rain falls for 38.3 days and collects up to 103mm (4.06") of precipitation.

Daylight

The average length of the day in September is 12h and 13min.
On the first day of the month, sunrise is at 05:47 and sunset at 18:12. On the last day of September, in Gao, sunrise is at 05:50 and sunset at 17:49 GMT.

Sunshine

In September, the average sunshine is 11h.

UV index

The months with the highest UV index in Gao are April through July and September, with an average maximum UV index of 9. A UV Index estimate of 8 to 10 represents a very high health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A maximum UV index of 9 in September translates into the following recommendations:
Swift harm can befall unprotected skin and eyes. Prioritize safety. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Despite the clouds, sunscreen with an SPF of at least 30 should be used liberally and reapplied frequently, especially after a swim or outdoor workout.
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Frequently asked questions

How hot is it in Gao in September?

September temperatures in Gao vary between a high-temperature of 39.3°C (102.7°F) and a low-temperature of 30.6°C (87.1°F).

What is the average humidity in September in Gao?

In Gao, Mali, the average relative humidity in September is 29%.

How many days does it rain in September in Gao?

In Gao, Mali, during September, the rain falls for 6.2 days and regularly aggregates up to 11mm (0.43") of precipitation.

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

In Gao, the average day length in September is 12h and 13min.

What time are sunrise and sunset in September in Gao?

In September, on the first day of the month, sunrise is at 05:47 and sunset at 18:12. On the last day of the month, sunrise is at 05:50 and sunset at 17:49 GMT.

How long on average sun shines in September in Gao?

In September, the average sunshine duration is 11h.

What is the month with the highest UV index in Gao?

The months with the highest UV index are April through July and September, with an average maximum UV index of 9.

What is the UV index reading in September in Gao?

In Gao, Mali, the average daily maximum UV index in September is 9. A UV Index of 8 to 10 symbolizes a very high hazard to health from exposure to the Sun's UV radiation.

Average temperature in September
Gao, Mali

Average temperature in September - Gao, Mali
  • Average high temperature in September: 39.3°C

The warmest month (with the highest average high temperature) is May (42.9°C).
The month with the lowest average high temperature is January (30.8°C).

  • Average low temperature in September: 30.6°C

The month with the highest average low temperature is June (32.3°C).
The coldest month (with the lowest average low temperature) is January (15.6°C).

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Average pressure in September
Gao, Mali

Average pressure in September - Gao, Mali
  • Average pressure in September: 1009.3mbar

The month with the highest atmospheric pressure is January (1014.5mbar).
The month with the lowest atmospheric pressure is May (1007mbar).

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Average wind speed in September
Gao, Mali

Average wind speed in September - Gao, Mali
  • Average wind speed in September: 12.8km/h

The windiest month (with the highest average wind speed) is July (16.5km/h).
The calmest month (with the lowest average wind speed) is October (11.6km/h).

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Average humidity in September
Gao, Mali

Average humidity in September - Gao, Mali
  • Average humidity in September: 29%

The month with the highest relative humidity is August (38%).
The month with the lowest relative humidity is March (11%).

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Average rainfall in September
Gao, Mali

Average rainfall in September - Gao, Mali
  • Average rainfall in September: 11mm

The wettest month (with the highest rainfall) is August (56mm).
The driest months (with the least rainfall) are January, February, March, April, November and December (0mm).

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Average rainfall days in September
Gao, Mali

Average rainfall days in September - Gao, Mali
  • Average rainfall days in September: 6.2 days

The month with the highest number of rainy days is August (11.3 days).
The month with the least rainy days is December (0 days).

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Average daylight in September /
Average sunshine in September
Gao, Mali

Average daylight in September / Average sunshine in September - Gao, Mali
  • Average daylight in September: 12h and 1min

The month with the longest days is June (Average daylight: 13h and 6min).
The month with the shortest days is December (Average daylight: 11h and 12min).

  • Average sunshine in September: 11h and 0min

The month with the most sunshine is May (Average sunshine: 12h and 12min).
The months with the least sunshine are January and December (Average sunshine: 7h and 30min).

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Average sunshine days in September
Gao, Mali

Average sunshine days in September - Gao, Mali
  • Average sunshine days in September: 21.2 days

The month with the most sunshine days is December (31 days).
The month with the least sunshine days is July (16.4 days).

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Average UV index in September
Gao, Mali

Average UV index in September - Gao, Mali
  • Average UV index in September: 9

The months with the highest UV index are April, May, June, July and September (UV index 9).
The months with the lowest UV index are January and December (UV index 6).

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Average cloud cover in September
Gao, Mali

Average cloud cover in September - Gao, Mali
  • Average cloud cover in September: 13

The month with the most cloud cover is August (Cloud cover 20).
The month with the least cloud cover is November (Cloud cover 6).

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Average visibility in September
Gao, Mali

Average visibility in September - Gao, Mali
  • Average visibility in September: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

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Gao, Mali

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