September weather forecast
Maunabo, PR

As September sets in, they start to see the initial signs of the transition of seasons in Maunabo. Observing a steady pattern of weather conditions, Maunabo remains a captivating city for visitors. Conditions in Maunabo slightly improve with the average wind speed reducing to 7.1mph (11.4km/h) from August’s 9.1mph (14.6km/h). September also witnesses a slight decrease in rainfall, improving overall climate stability. Despite these minor alterations in the climate, the city continues to be a welcome destination owing to its tropical weather.

Temperature

September registers an average high-temperature of a still warm 84.6°F (29.2°C), slightly varied from August's 84.7°F (29.3°C). Maunabo welcomes an average low temperature of 78.1°F (25.6°C) in September, a gentle shift from the day's high.

Heat index

For most parts of September, the heat index is computed to be a very hot 95°F (35°C). Incorporate special precautions, risk of heat exhaustion and heat cramps is substantial. Sustained activity could cause heatstroke.
It is emphasized that the heat index's values are meant for shaded zones with mild winds. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', provides an understanding of perceived warmth by combining temperature and relative humidity. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.

Humidity

In September, the average relative humidity in Maunabo is 80%.

Rainfall

In Maunabo, in September, it is raining for 20.4 days, with typically 3.62" (92mm) of accumulated precipitation. In Maunabo, during the entire year, the rain falls for 223.2 days and collects up to 27.87" (708mm) of precipitation.

Daylight

In Maunabo, the average length of the day in September is 12h and 14min.
On the first day of September, sunrise is at 6:09 am and sunset at 6:37 pm. On the last day of the month, sunrise is at 6:13 am and sunset at 6:12 pm AST.

Sunshine

In Maunabo, the average sunshine in September is 9h.

UV index

May through November, 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 threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: A daily maximum UV index of 7 in September translates into the following instructions:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.