September weather forecast
Managua, Nicaragua

September is the wettest month in Managua with the highest recorded rainfall of 317mm (12.48"). There is a slight dip in the high temperature to 30.4°C (86.7°F). This month welcomes autumn with the city still under the influence of constant monsoon showers. Owing to the overcast conditions and high precipitation, the humidity levels reach a soaring 83%. The majority of the city’s outdoor life and activities continue to be governed by the rainfall and cloud cover.

Temperature

The transition into September marks the average high-temperature at a still hot 30.4°C (86.7°F), differing minimally from August's 31.2°C (88.2°F). Managua experiences an average nighttime temperature of 23.1°C (73.6°F) in the month of September.

Heat index

The heat index for September is appraised at a blisteringly hot 40°C (104°F). Ensure heightened precautions, risk of heat cramps and heat exhaustion is significant. Sustained activity could provoke heatstroke.
Records show heat index calculations are tailored for shaded regions and mild winds. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', arises from combining readings of air temperature and relative moisture content. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. In circumstances of high air temperature and humidity (high heat index), the body's perspiration is restricted, heightening the feeling of warmth. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.

Humidity

In Managua, the average relative humidity in September is 83%.

Rainfall

In September, in Managua, Nicaragua, the rain falls for 26.5 days. Throughout September, 173mm (6.81") of precipitation is accumulated. Throughout the year, in Managua, there are 203.8 rainfall days, and 1319mm (51.93") of precipitation is accumulated.

Daylight

The average length of the day in September in Managua is 12h and 11min.
On the first day of the month, sunrise is at 05:34 and sunset at 17:55. On the last day of September, sunrise is at 05:33 and sunset at 17:35 CST.

Sunshine

In Managua, Nicaragua, the average sunshine in September is 8.6h.

UV index

January through September, November and December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index of 7 during September translates into the following directions:
Guard against overexposure. Protection from sun-induced harm is essential. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.