September weather forecast
Corn Island, Nicaragua

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The magnificent Corn Island in Nicaragua, with the magnificent view of the surrounding turquoise blue waters
The magnificent Corn Island in Nicaragua, with the magnificent view of the surrounding turquoise blue waters

Weather in September

September brings about a continued easing of rainfall in Corn Island, with lowering precipitations compared to August. The sea temperatures start to rise again, invigorating the beach activities. The wind speed slows down drastically from the previous month, adding to the tranquility of the island. The longer sunshine hours and daylight make this month particularly bright. It's a shift towards drier weather, yet the island still stays within the bounds of the rainy season.

Temperature

In Corn Island, September's average high-temperature stands at a hot 30°C (86°F), closely related to the preceding month. Nights in September showcase an average temperature of 25°C (77°F), slightly cooler than the daytime.

Heat index

September's heat index is computed to be a torrid 38°C (100.4°F). Implement more preventive measures, heat cramps and heat exhaustion are probable. Heatstroke might result from extended activity.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', gauges the sensation of temperature factoring in the air's moisture content. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

The average relative humidity in September in Corn Island is 82%.

Rainfall

In September, in Corn Island, the rain falls for 27.6 days. Throughout September, 178mm (7.01") of precipitation is accumulated. Throughout the year, in Corn Island, there are 303.8 rainfall days, and 2159mm (85") of precipitation is accumulated.

Sea temperature

The month with the warmest seawater is September, with an average sea temperature of 29.4°C (84.9°F).
Note: Water activities in surface temperatures between 25°C (77°F) and 29°C (84.2°F) are seen as exceptional and extremely agreeable for lengthened time spans.

Daylight

In Corn Island, the average length of the day in September is 12h and 11min.
On the first day of September, sunrise is at 05:21 and sunset at 17:42. On the last day of the month, sunrise is at 05:21 and sunset at 17:22 CST.

Sunshine

The average sunshine in September in Corn Island is 8.3h.

UV index

March through October, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum UV index, 7 during September, leads to the following recommendations:
Stay clear of intense sun exposure. Solar protection is of utmost significance. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Stay alert! Reflective properties of sand and water amplify the Sun's UV radiation.
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Frequently asked questions

How hot is it in Corn Island in September?

Corn Island in September has an average high-temperature of 30°C (86°F) and an average low-temperature of 25°C (77°F). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which represents the influence of relative humidity on air temperature, in September is computed to be 38°C (100.4°F).

What is the average humidity in September in Corn Island?

In Corn Island, the average relative humidity in September is 82%.

How many days does it rain in September in Corn Island?

In Corn Island, Nicaragua, in September, it is raining for 27.6 days, with typically 178mm (7.01") of accumulated precipitation.

When is the sea warmest in Corn Island?

With an average sea temperature of 29.4°C (84.9°F), September is the month with the warmest seawater.

How warm is the water in September in Corn Island?

In September, the average sea temperature is 29.4°C (84.9°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

What is the average length of the day in September in Corn Island?

In September, the average day length in Corn Island, Nicaragua, is 12h and 11min.

When is the sunrise / sunset in September in Corn Island?

On the first day of September, sunrise is at 05:21 and sunset at 17:42. On the last day of the month, sunrise is at 05:21 and sunset at 17:22 CST.

How many hours of sunshine does Corn Island have in September?

The average sunshine duration in September is 8.3h.

What is the month with the highest UV index in Corn Island?

March through October, with an average maximum UV index of 7, are months with the highest UV index in Corn Island.

How high is the UV index in September in Corn Island?

The average daily maximum UV index in September in Corn Island, Nicaragua, is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation.

Average temperature in September
Corn Island, Nicaragua

Average temperature in September - Corn Island, Nicaragua
  • Average high temperature in September: 30°C

The warmest month (with the highest average high temperature) is April (30.2°C).
The month with the lowest average high temperature is January (27.8°C).

  • Average low temperature in September: 25°C

The month with the highest average low temperature is August (25.2°C).
The coldest month (with the lowest average low temperature) is January (23.3°C).

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Average pressure in September
Corn Island, Nicaragua

Average pressure in September - Corn Island, Nicaragua
  • Average pressure in September: 1010.6mbar

The month with the highest atmospheric pressure is January (1013.4mbar).
The month with the lowest atmospheric pressure is October (1010.2mbar).

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Average wind speed in September
Corn Island, Nicaragua

Average wind speed in September - Corn Island, Nicaragua
  • Average wind speed in September: 8.9km/h

The windiest month (with the highest average wind speed) is January (15.2km/h).
The calmest month (with the lowest average wind speed) is September (8.9km/h).

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Average humidity in September
Corn Island, Nicaragua

Average humidity in September - Corn Island, Nicaragua
  • Average humidity in September: 82%

The month with the highest relative humidity is July (86%).
The month with the lowest relative humidity is April (77%).

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Average rainfall in September
Corn Island, Nicaragua

Average rainfall in September - Corn Island, Nicaragua
  • Average rainfall in September: 178mm

The wettest month (with the highest rainfall) is July (350mm).
The driest month (with the least rainfall) is April (38mm).

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Average rainfall days in September
Corn Island, Nicaragua

Average rainfall days in September - Corn Island, Nicaragua
  • Average rainfall days in September: 27.6 days

The month with the highest number of rainy days is July (29.6 days).
The months with the least rainy days are March and April (18.7 days).

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Average sea temperature in September
Corn Island, Nicaragua

Average sea temperature in September - Corn Island, Nicaragua
  • Average sea temperature in September: 29.4°C

The best month for swimming (with the highest average sea temperature) is September (29.4°C).
The coldest month (with the lowest average sea temperature) is January (26.8°C).

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Average daylight in September /
Average sunshine in September
Corn Island, Nicaragua

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

The month with the longest days is June (Average daylight: 12h and 48min).
The month with the shortest days is December (Average daylight: 11h and 24min).

  • Average sunshine in September: 8h and 2min

The months with the most sunshine are April and July (Average sunshine: 8h and 24min).
The month with the least sunshine is January (Average sunshine: 6h and 12min).

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Average sunshine days in September
Corn Island, Nicaragua

Average sunshine days in September - Corn Island, Nicaragua
  • Average sunshine days in September: 1.8 days

The month with the most sunshine days is March (9.8 days).
The month with the least sunshine days is July (0.9 days).

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Average UV index in September
Corn Island, Nicaragua

Average UV index in September - Corn Island, Nicaragua
  • Average UV index in September: 7

The months with the highest UV index are March, April, May, June, July, August, September and October (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 6).

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Average cloud cover in September
Corn Island, Nicaragua

Average cloud cover in September - Corn Island, Nicaragua
  • Average cloud cover in September: 40

The month with the most cloud cover is July (Cloud cover 53).
The month with the least cloud cover is April (Cloud cover 37).

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Average visibility in September
Corn Island, Nicaragua

Average visibility in September - Corn Island, Nicaragua
  • Average visibility in September: 9km

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

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Corn Island, Nicaragua

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