September weather forecastAltamira, Panama

September

Weather in September

September, the first month of the autumn in Altamira, is still a warm month, with an average temperature ranging between max 29.1°C (84.4°F) and min 24.1°C (75.4°F).

Temperature

The arrival of September brings an average high-temperature of a still warm 29.1°C (84.4°F), subtly diverging from August's 29.2°C (84.6°F). September nights in Altamira document an average temperature reading of 24.1°C (75.4°F).

Heat index

For most parts of September, the heat index is estimated at a sweltering 36°C (96.8°F). Adopt enhanced safety measures, heat exhaustion and heat cramps could occur. Continuous activity may induce heatstroke.
Bear in mind that the heat index values are determined for shaded areas and light breezes. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
Through perspiration, the body has a natural mechanism to eliminate excessive heat via sweat evaporation. Under high air temperature coupled with high humidity (high heat index), the body's perspiration is reduced, intensifying the sensation of heat. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.

Humidity

In Altamira, the average relative humidity in September is 86%.

Rainfall

In Altamira, in September, during 24.4 rainfall days, 161mm (6.34") of precipitation is typically accumulated. In Altamira, during the entire year, the rain falls for 282 days and collects up to 1912mm (75.28") of precipitation.

Daylight

In Altamira, Panama, the average length of the day in September is 12h and 10min.
On the first day of the month, sunrise is at 06:09 and sunset at 18:26. On the last day of September, sunrise is at 06:06 and sunset at 18:09 EST.

Sunshine

In September, the average sunshine is 7.9h.

UV index

The months with the highest UV index in Altamira, Panama, are January through December, with an average maximum UV index of 7. 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 health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: The daily high UV index of 7 during September translates into the following recommendations:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. To cut down UV radiation exposure by about half, sport a wide-brim hat.

Updated: Feb 2, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Altamira in September has an average high-temperature of 29.1°C (84.4°F) and an average low-temperature of 24.1°C (75.4°F). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which represents the influence of relative humidity on air temperature, in September is estimated at 36°C (96.8°F).

The average relative humidity in September in Altamira is 86%.

In Altamira, during September, the rain falls for 24.4 days and regularly aggregates up to 161mm (6.34") of precipitation.

In Altamira, Panama, the average day length in September is 12h and 10min.

In September, on the first day of the month, sunrise is at 06:09 and sunset at 18:26. On the last day of the month, in Altamira, Panama, sunrise is at 06:06 and sunset at 18:09 EST.

The average sunshine duration in September in Altamira, Panama, is 7.9h.

The months with the highest UV index are January through December, with an average maximum UV index of 7.

January through December, with an average maximum UV index of 7, are months with the lowest UV index in Altamira, Panama.

In Altamira, Panama, the average daily maximum UV index in September is 7. A UV Index estimate of 6 to 7 represents a high hazard to health from exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A September O N D

Aug

September

Oct

Average high temperature

29.2°C

29.1°C

28.7°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

7.1km/h

6.6km/h

7.6km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

3.2

5.1

3.7

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Altamira, Panama

Average high temperature in September: 29.1°C

The warmest months (with the highest average high temperature) are March and April (30.8°C).
The months with the lowest average high temperature are October and November (28.7°C).

Average low temperature in September: 24.1°C

The month with the highest average low temperature is June (24.9°C).
The coldest months (with the lowest average low temperature) are January and February (23.6°C).

Average pressure in September
Altamira, Panama

Average pressure in September: 1010mbar

The month with the highest atmospheric pressure is March (1011mbar).
The month with the lowest atmospheric pressure is November (1009.6mbar).

Average wind speed in September
Altamira, Panama

Average wind speed in September: 6.3km/h

The windiest month (with the highest average wind speed) is February (11.2km/h).
The calmest months (with the lowest average wind speed) are June and September (6.3km/h).

Average humidity in September
Altamira, Panama

Average humidity in September: 86%

The months with the highest relative humidity are July, August and November (87%).
The month with the lowest relative humidity is March (77%).

Average rainfall in September
Altamira, Panama

Average rainfall in September: 161mm

The wettest month (with the highest rainfall) is July (273mm).
The driest month (with the least rainfall) is February (14mm).

Average rainfall days in September
Altamira, Panama

Average rainfall days in September: 24.4 days

The month with the highest number of rainy days is May (29.3 days).
The month with the least rainy days is February (11.6 days).

Average daylight in September /
Average sunshine in September
Altamira, Panama

Average daylight in September: 12h and 12min

The month with the longest days is June (Average daylight: 12h and 36min).
The month with the shortest days is December (Average daylight: 11h and 36min).

Average sunshine in September: 7h and 54min

The month with the most sunshine is May (Average sunshine: 8h and 48min).
The month with the least sunshine is November (Average sunshine: 5h and 42min).

Average sunshine days in September
Altamira, Panama

Average sunshine days in September: 5.1 days

The month with the most sunshine days is January (10.8 days).
The month with the least sunshine days is November (0.8 days).

Average UV index in September
Altamira, Panama

Average UV index in September: 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).