September weather forecastCerro Alegre, Peru

September

Weather in September

September, the first month of the spring in Cerro Alegre, is also an enjoyable month, with an average temperature varying between 14.8°C (58.6°F) and 17.9°C (64.2°F).

Temperature

September records an average high-temperature of a still refreshing 17.9°C (64.2°F), indicating a minor variation from the preceding month. September nights experience a minor temperature downturn to a moderate 14.8°C (58.6°F).

Humidity

The average relative humidity in September is 81%.

Rainfall

January through June, September through December are months with rainfall in Cerro Alegre, Peru. September is the first month it rains. Throughout September, in the average 1.7 rainfall days, it receives 1mm (0.04") of precipitation. In Cerro Alegre, during the entire year, the rain falls for 73.4 days and collects up to 68mm (2.68") of precipitation.

Daylight

The average length of the day in September in Cerro Alegre is 12h and 2min.
On the first day of September, sunrise is at 06:09 and sunset at 18:01. On the last day of the month, sunrise is at 05:48 and sunset at 18:01 -05.

Sunshine

The average sunshine in September in Cerro Alegre is 11h.

UV index

The months with the lowest UV index in Cerro Alegre are April through December, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for average individuals.
Note: An average UV index of 5 in September transforms into this advice:
Be vigilant - Preventing sunburn is recommended. To guard against the harmful effects of the Sun, minimize exposure during midday. During bright days, sunglasses that offer UVA and UVB defense are recommended.

Frequently asked questions

The average high-temperature and low-temperature during September are 17.9°C (64.2°F) and 14.8°C (58.6°F) respectively.

In September, the average relative humidity is 81%.

September is the first month it rains in Cerro Alegre, Peru. Throughout September, in the average 1.7 rainfall days, it receives 1mm (0.04") of precipitation.

In Cerro Alegre, the average day length in September is 12h and 2min.

In September, on the first day of the month, sunrise is at 06:09 and sunset at 18:01. On the last day of the month, in Cerro Alegre, sunrise is at 05:48 and sunset at 18:01 -05.

In Cerro Alegre, the average sunshine duration in September is 11h.

April through December, with an average maximum UV index of 5, are months with the lowest UV index.

In September, the average daily maximum UV index in Cerro Alegre, Peru, is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Cerro Alegre, Peru

  • Average high temperature in September: 17.9°C

The warmest month (with the highest average high temperature) is February (22.8°C).
The month with the lowest average high temperature is August (17.8°C).

  • Average low temperature in September: 14.8°C

The month with the highest average low temperature is February (20.7°C).
The coldest month (with the lowest average low temperature) is August (14.5°C).

Average pressure in September
Cerro Alegre, Peru

  • Average pressure in September: 1015.9mbar

The month with the highest atmospheric pressure is August (1016.2mbar).
The month with the lowest atmospheric pressure is February (1013.5mbar).

Average wind speed in September
Cerro Alegre, Peru

  • Average wind speed in September: 12.6km/h

The windiest month (with the highest average wind speed) is September (12.6km/h).
The calmest month (with the lowest average wind speed) is February (9.9km/h).

Average humidity in September
Cerro Alegre, Peru

  • Average humidity in September: 81%

The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are July and August (80%).

Average rainfall in September
Cerro Alegre, Peru

  • Average rainfall in September: 1mm

The wettest month (with the highest rainfall) is January (18mm).
The driest months (with the least rainfall) are July and August (0mm).

Average rainfall days in September
Cerro Alegre, Peru

  • Average rainfall days in September: 1.7 days

The month with the highest number of rainy days is March (16.7 days).
The month with the least rainy days is August (0.4 days).

Average daylight in September /
Average sunshine in September
Cerro Alegre, Peru

  • Average daylight in September: 12h and 0min

The month with the longest days is December (Average daylight: 12h and 54min).
The month with the shortest days is June (Average daylight: 11h and 24min).

  • Average sunshine in September: 11h and 0min

The months with the most sunshine are October and November (Average sunshine: 12h and 12min).
The months with the least sunshine are May and July (Average sunshine: 7h and 36min).

Average sunshine days in September
Cerro Alegre, Peru

  • Average sunshine days in September: 26.2 days

The month with the most sunshine days is July (29.7 days).
The month with the least sunshine days is February (7.3 days).

Average UV index in September
Cerro Alegre, Peru

  • Average UV index in September: 5

The months with the highest UV index are January, February and March (UV index 6).
The months with the lowest UV index are April, May, June, July, August, September, October, November and December (UV index 5).

Average cloud cover in September
Cerro Alegre, Peru

  • Average cloud cover in September: 9

The month with the most cloud cover is January (Cloud cover 31).
The month with the least cloud cover is August (Cloud cover 5).

Average visibility in September
Cerro Alegre, Peru

  • 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).