September weather forecast
Jalapa, Guatemala

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Weather in September

September maintains the tropical climate patterns, with high humidity and rainfall. The increase in rainfall to 269 millimeters compared to August indicates the apex of the second wave of the wet season. Even though comparisons with August indicate September's weather to be similar, rainfall spikes during this month. The weather heralds the peak of the second wet cycle, with constant showers and high humidity. Thus, September can be considered the encore of the tropical period in Jalapa, characterized by substantial rainfall.

Temperature

The transition into September is marked with an average high-temperature of a still moderately hot 23.4°C (74.1°F), showing an insignificant shift from August's 24.2°C (75.6°F). Jalapa, in the month of September, anticipates a consistent average low-temperature of 15°C (59°F).

Humidity

September is the most humid month in Jalapa, with an average relative humidity of 90%.

Rainfall

In Jalapa, during September, the rain falls for 28.7 days and regularly aggregates up to 269mm (10.59") of precipitation. Throughout the year, in Jalapa, Guatemala, there are 231.3 rainfall days, and 1656mm (65.2") of precipitation is accumulated.

Daylight

The average length of the day in September in Jalapa is 12h and 13min.
On the first day of the month, sunrise is at 05:47 and sunset at 18:11. On the last day of September, in Jalapa, sunrise is at 05:49 and sunset at 17:49 CST.

Sunshine

The average sunshine in September is 7.7h.

UV index

In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: A daily maximum UV index of 5 in September translates into the following instructions:
Take necessary precautions - Protection from skin and eye injury is mandatory. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.

Frequently asked questions

What are September temperatures in Jalapa?

The average high-temperature and low-temperature in Jalapa, Guatemala, during September are 23.4°C (74.1°F) and 15°C (59°F) respectively. The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines relative humidity and air temperature, in April is computed to be 29°C (84.2°F).

What is the most humid month in Jalapa?

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

What is the average humidity in September in Jalapa?

The average relative humidity in September in Jalapa, Guatemala, is 90%.

How many days does it rain in September in Jalapa?

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

How many hours of daylight does Jalapa have in September?

The average day length in September in Jalapa, Guatemala, is 12h and 13min.

When are sunrise and sunset in September in Jalapa?

On the first day of September, sunrise is at 05:47 and sunset at 18:11. On the last day of the month, sunrise is at 05:49 and sunset at 17:49 CST.

How many hours of sunshine does Jalapa have in September?

In September, the average sunshine duration in Jalapa, Guatemala, is 7.7h.

What is the UV index reading in September in Jalapa?

The average daily maximum UV index in September in Jalapa is 5. A UV Index of 3 to 5 symbolizes a moderate 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
Jalapa, Guatemala

Average temperature in September - Jalapa, 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
Jalapa, Guatemala

Average pressure in September - Jalapa, 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
Jalapa, Guatemala

Average wind speed in September - Jalapa, 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
Jalapa, Guatemala

Average humidity in September - Jalapa, 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
Jalapa, Guatemala

Average rainfall in September - Jalapa, 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
Jalapa, Guatemala

Average rainfall days in September - Jalapa, 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
Jalapa, Guatemala

Average daylight in September / Average sunshine in September - Jalapa, 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
Jalapa, Guatemala

Average sunshine days in September - Jalapa, 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
Jalapa, Guatemala

Average UV index in September - Jalapa, 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
Jalapa, Guatemala

Average cloud cover in September - Jalapa, 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
Jalapa, Guatemala

Average visibility in September - Jalapa, Guatemala
  • Average visibility in September: 6km

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

Jalapa, Guatemala

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