September weather forecast
El Viejo, Nicaragua

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Weather in September

The trend of generous rainfall continues in September with a precipitation total of 151mm (5.94"). The number of daylight hours slowly starts to recede. A higher humidity level marks the time, making the atmospheric condition slightly more dense. Still, temperatures hold steady retaining warmth that has persisted throughout the year. Despite the wet weather, El Viejo continues to captivate with its unique charm and quaint appeal.

Temperature

Transitioning into September, El Viejo experiences an average high-temperature of a still tropical 31.4°C (88.5°F), marking a minor shift from the preceding month. During the September nights, an average temperature of 24.3°C (75.7°F) is observed in El Viejo, Nicaragua.

Heat index

The heat index value during September is computed to be a blistering 42°C (107.6°F). Undertake extra safety actions, heat cramps and heat exhaustion are expected. Heatstroke may result from lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', provides an understanding of perceived warmth by combining temperature and relative humidity. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. With excessive moisture in the atmosphere, the effectiveness of the evaporation process is decreased, causing the body to cool down less efficiently, leading to a sensation of overheating. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.

Humidity

In September, the average relative humidity is 80%.

Rainfall

In El Viejo, during September, the rain falls for 27.5 days and regularly aggregates up to 151mm (5.94") of precipitation. In El Viejo, during the entire year, the rain falls for 185.2 days and collects up to 1036mm (40.79") of precipitation.

Daylight

In El Viejo, the average length of the day in September is 12h and 11min.
On the first day of the month, sunrise is at 05:37 and sunset at 17:59. On the last day of September, sunrise is at 05:37 and sunset at 17:39 CST.

Sunshine

The average sunshine in September in El Viejo, Nicaragua, is 8.5h.

UV index

The months with the lowest UV index in El Viejo are January, February, April through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: In September, the UV index of 7 transforms into the following advice:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.

Frequently asked questions

How hot is it in El Viejo in September?

The high-temperature, in September, in El Viejo, is 31.4°C (88.5°F), while the low-temperature averages to 24.3°C (75.7°F). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which factors the actual air temperature with the relative humidity, in September is computed to be 42°C (107.6°F).

What is the average humidity in September in El Viejo?

The average relative humidity in September in El Viejo is 80%.

How much does it rain in El Viejo in September?

In El Viejo, in September, it is raining for 27.5 days, with typically 151mm (5.94") of accumulated precipitation.

What is the average length of the day in September in El Viejo?

The average day length in September in El Viejo, Nicaragua, is 12h and 11min.

When is the sunrise / sunset in September in El Viejo?

On the first day of September in El Viejo, Nicaragua, sunrise is at 05:37 and sunset at 17:59. On the last day of the month, sunrise is at 05:37 and sunset at 17:39 CST.

How long on average sun shines in September in El Viejo?

In El Viejo, Nicaragua, the average sunshine duration in September is 8.5h.

What are the months with the lowest UV index in El Viejo?

January, February, April through December, with an average maximum UV index of 7, are months with the lowest UV index in El Viejo.

What is the UV index intensity in September in El Viejo?

In El Viejo, Nicaragua, the average daily maximum UV index in September is 7. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to Sun's UV rays.

Average temperature in September
El Viejo, Nicaragua

Average temperature in September - El Viejo, Nicaragua
  • Average high temperature in September: 31.4°C

The warmest month (with the highest average high temperature) is April (35.3°C).
The month with the lowest average high temperature is October (30.2°C).

  • Average low temperature in September: 24.3°C

The month with the highest average low temperature is May (26.4°C).
The coldest month (with the lowest average low temperature) is December (22.2°C).

Average pressure in September
El Viejo, Nicaragua

Average pressure in September - El Viejo, Nicaragua
  • Average pressure in September: 1011.1mbar

The month with the highest atmospheric pressure is January (1012.6mbar).
The month with the lowest atmospheric pressure is October (1010.7mbar).

Average wind speed in September
El Viejo, Nicaragua

Average wind speed in September - El Viejo, Nicaragua
  • Average wind speed in September: 6.7km/h

The windiest month (with the highest average wind speed) is February (11km/h).
The calmest month (with the lowest average wind speed) is October (6.6km/h).

Average humidity in September
El Viejo, Nicaragua

Average humidity in September - El Viejo, Nicaragua
  • Average humidity in September: 80%

The month with the highest relative humidity is October (83%).
The month with the lowest relative humidity is March (56%).

Average rainfall in September
El Viejo, Nicaragua

Average rainfall in September - El Viejo, Nicaragua
  • Average rainfall in September: 151mm

The wettest month (with the highest rainfall) is October (214mm).
The driest months (with the least rainfall) are January, February and March (2mm).

Average rainfall days in September
El Viejo, Nicaragua

Average rainfall days in September - El Viejo, Nicaragua
  • Average rainfall days in September: 27.5 days

The month with the highest number of rainy days is September (27.5 days).
The month with the least rainy days is February (1.8 days).

Average daylight in September /
Average sunshine in September
El Viejo, Nicaragua

Average daylight in September / Average sunshine in September - El Viejo, Nicaragua
  • Average daylight in September: 12h and 1min

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

  • Average sunshine in September: 8h and 3min

The month with the most sunshine is April (Average sunshine: 11h and 12min).
The months with the least sunshine are January and February (Average sunshine: 7h and 36min).

Average sunshine days in September
El Viejo, Nicaragua

Average sunshine days in September - El Viejo, Nicaragua
  • Average sunshine days in September: 1.7 days

The month with the most sunshine days is January (29 days).
The month with the least sunshine days is September (1.7 days).

Average UV index in September
El Viejo, Nicaragua

Average UV index in September - El Viejo, Nicaragua
  • Average UV index in September: 7

The month with the highest UV index is March (UV index 8).
The months with the lowest UV index are January, February, April, May, June, July, August, September, October, November and December (UV index 7).

Average cloud cover in September
El Viejo, Nicaragua

Average cloud cover in September - El Viejo, Nicaragua
  • Average cloud cover in September: 39

The month with the most cloud cover is October (Cloud cover 42).
The months with the least cloud cover are January, February and March (Cloud cover 15).

Average visibility in September
El Viejo, Nicaragua

Average visibility in September - El Viejo, Nicaragua
  • Average visibility in September: 9km

The months with the highest visibility are January, February, March, April, May, June, July, August, November and December (10km).
The months with the lowest visibility are September and October (9km).

El Viejo, Nicaragua

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