September weather forecast
San Juan Sacatepéquez, Guatemala

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Weather in September

September in San Juan Sacatepéquez records the year's highest rainfall of 269mm (10.59"), with the city almost fully immersed in the monsoon climate. Despite the rainfall, temperatures remain steady, marking a consistency in the weather conditions. A decrease in wind speed is observed, reflecting placidity amid the persistent showers. Visibility also tends to decrease due to the increased precipitation. Yet amid the rain, the city reveals a distinct charm, cradled in the melody of the monsoon downpour.

Temperature

San Juan Sacatepéquez indicates an average high-temperature of a still warm 23.4°C (74.1°F) in September, showing minor variation from August's 24.2°C (75.6°F). San Juan Sacatepéquez's nighttime temperature during September is consistently averaged at a refreshing 15°C (59°F).

Humidity

With an average relative humidity of 90%, September is the most humid month.

Rainfall

In San Juan Sacatepéquez, in September, it is raining for 28.7 days, with typically 269mm (10.59") of accumulated precipitation. Throughout the year, in San Juan Sacatepéquez, there are 231.3 rainfall days, and 1656mm (65.2") of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 13min.
On the first day of September in San Juan Sacatepéquez, sunrise is at 05:50 and sunset at 18:14. On the last day of the month, sunrise is at 05:52 and sunset at 17:52 CST.

Sunshine

The average sunshine in September is 7.7h.

UV index

In San Juan Sacatepéquez, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: In September, a daily UV index of 5 turns into the following recommendations:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. Minimize direct exposure to the Sun during midday when its radiation is at its peak. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.

Frequently asked questions

What is the average September temperature in San Juan Sacatepéquez?

The average high-temperature, in September, in San Juan Sacatepéquez, is 23.4°C (74.1°F), while the average low-temperature is 15°C (59°F). In April, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is appraised at 29°C (84.2°F).

What is the most humid month in San Juan Sacatepéquez?

The most humid month in San Juan Sacatepéquez, Guatemala, is September, with an average relative humidity of 90%.

What is the average humidity in September in San Juan Sacatepéquez?

The average relative humidity in September in San Juan Sacatepéquez is 90%.

How much does it rain in San Juan Sacatepéquez in September?

In San Juan Sacatepéquez, in September, during 28.7 rainfall days, 269mm (10.59") of precipitation is typically accumulated.

How many hours of daylight does San Juan Sacatepéquez have in September?

The average day length in September in San Juan Sacatepéquez, Guatemala, is 12h and 13min.

When is the sunrise / sunset in September in San Juan Sacatepéquez?

In September, on the first day of the month, sunrise is at 05:50 and sunset at 18:14. On the last day of the month, in San Juan Sacatepéquez, Guatemala, sunrise is at 05:52 and sunset at 17:52 CST.

How long on average sun shines in September in San Juan Sacatepéquez?

In San Juan Sacatepéquez, the average sunshine duration in September is 7.7h.

What is the UV index reading in September in San Juan Sacatepéquez?

In San Juan Sacatepéquez, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium health risk from unsafe 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
San Juan Sacatepéquez, Guatemala

Average temperature in September - San Juan Sacatepéquez, Guatemala
  • Average high temperature in September: 23.4°C

The warmest month (with the highest average high temperature) is April (27.3°C).
The month with the lowest average high temperature is October (22.5°C).

  • Average low temperature in September: 15°C

The month with the highest average low temperature is May (16.5°C).
The coldest month (with the lowest average low temperature) is January (11.8°C).

Average pressure in September
San Juan Sacatepéquez, Guatemala

Average pressure in September - San Juan Sacatepéquez, Guatemala
  • Average pressure in September: 1012.6mbar

The month with the highest atmospheric pressure is January (1015.5mbar).
The month with the lowest atmospheric pressure is May (1012.5mbar).

Average wind speed in September
San Juan Sacatepéquez, Guatemala

Average wind speed in September - San Juan Sacatepéquez, Guatemala
  • Average wind speed in September: 5.9km/h

The windiest month (with the highest average wind speed) is January (12.8km/h).
The calmest month (with the lowest average wind speed) is September (5.9km/h).

Average humidity in September
San Juan Sacatepéquez, Guatemala

Average humidity in September - San Juan Sacatepéquez, Guatemala
  • Average humidity in September: 90%

The month with the highest relative humidity is September (90%).
The month with the lowest relative humidity is March (69%).

Average rainfall in September
San Juan Sacatepéquez, Guatemala

Average rainfall in September - San Juan Sacatepéquez, Guatemala
  • Average rainfall in September: 269mm

The wettest month (with the highest rainfall) is May (285mm).
The driest month (with the least rainfall) is January (7mm).

Average rainfall days in September
San Juan Sacatepéquez, Guatemala

Average rainfall days in September - San Juan Sacatepéquez, Guatemala
  • Average rainfall days in September: 28.7 days

The month with the highest number of rainy days is September (28.7 days).
The month with the least rainy days is January (6.7 days).

Average daylight in September /
Average sunshine in September
San Juan Sacatepéquez, Guatemala

Average daylight in September / Average sunshine in September - San Juan Sacatepéquez, Guatemala
  • Average daylight in September: 12h and 1min

The month with the longest days is June (Average daylight: 13h and 0min).
The month with the shortest days is December (Average daylight: 11h and 18min).

  • Average sunshine in September: 7h and 4min

The month with the most sunshine is April (Average sunshine: 11h and 18min).
The month with the least sunshine is October (Average sunshine: 7h and 24min).

Average sunshine days in September
San Juan Sacatepéquez, Guatemala

Average sunshine days in September - San Juan Sacatepéquez, Guatemala
  • Average sunshine days in September: 0.9 days

The month with the most sunshine days is January (20.8 days).
The month with the least sunshine days is September (0.9 days).

Average UV index in September
San Juan Sacatepéquez, Guatemala

Average UV index in September - San Juan Sacatepéquez, Guatemala
  • Average UV index in September: 5

The months with the highest UV index are March and April (UV index 6).
The months with the lowest UV index are August and October (UV index 4).

Average cloud cover in September
San Juan Sacatepéquez, Guatemala

Average cloud cover in September - San Juan Sacatepéquez, Guatemala
  • Average cloud cover in September: 59

The months with the most cloud cover are June and September (Cloud cover 59).
The months with the least cloud cover are January, February and March (Cloud cover 26).

Average visibility in September
San Juan Sacatepéquez, Guatemala

Average visibility in September - San Juan Sacatepéquez, Guatemala
  • Average visibility in September: 6km

The month with the highest visibility is March (10km).
The month with the lowest visibility is September (6km).

San Juan Sacatepéquez, Guatemala

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