September weather forecast
Naguabo, PR

Share

Weather in September

In September, Naguabo welcomes the fall with slightly lower peak temperatures of 84°F (28.9°C). As August's scorching heat gives way, the lowered temperature and a slight drop in rainfall days creates a balance, making it ideal for outdoor pursuits. The average of 19.6 rainfall days this month signifies the start of the drying-off phase. Despite the reduction in daylight hours, the length of sunshine remains relatively consistent, presenting perfect conditions for beach excursions. Wind speeds, though on the decline, still manage to whip up a comforting breeze.

Temperature

With September's advent, Naguabo sees an average high-temperature of a still warm 84°F (28.9°C), subtly shifted from August's 84.2°F (29°C). September nighttime temperatures hover close to the daytime peak with an average of 80.8°F (27.1°C).

Heat index

Throughout September, the heat index is computed to be a hot 93.2°F (34°C). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.
It is emphasized that the heat index's values are meant for shaded zones with mild winds. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', provides an understanding of perceived warmth by combining temperature and relative humidity. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.

Humidity

In September, the average relative humidity in Naguabo is 78%.

Rainfall

In Naguabo, during September, the rain falls for 19.6 days and regularly aggregates up to 1.77" (45mm) of precipitation. In Naguabo, during the entire year, the rain falls for 216 days and collects up to 21.5" (546mm) of precipitation.

Daylight

In Naguabo, Puerto Rico, the average length of the day in September is 12h and 14min.
On the first day of September, sunrise is at 6:08 am and sunset at 6:36 pm. On the last day of the month, sunrise is at 6:13 am and sunset at 6:12 pm AST.

Sunshine

In Naguabo, the average sunshine in September is 9.1h.

UV index

January, March through December, with an average maximum UV index of 7, are months with the highest UV index in Naguabo. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: A maximum high daily UV index of 7 during September translates into the following directions:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
[Resources]

Frequently asked questions

Is it hot in Naguabo during September?

September temperatures in Naguabo vary between a high-temperature of 84°F (28.9°C) and a low-temperature of 80.8°F (27.1°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines air temperature and relative humidity, in September is computed to be 93.2°F (34°C).

What is the average humidity in September in Naguabo?

In Naguabo, Puerto Rico, the average relative humidity in September is 78%.

How much does it rain in Naguabo in September?

In Naguabo, during September, the rain falls for 19.6 days and regularly aggregates up to 1.77" (45mm) of precipitation.

What is the average length of the day in September in Naguabo?

In Naguabo, the average day length in September is 12h and 14min.

When are sunrise and sunset in September in Naguabo?

On the first day of September in Naguabo, sunrise is at 6:08 am and sunset at 6:36 pm. On the last day of the month, sunrise is at 6:13 am and sunset at 6:12 pm AST.

How many hours of sunshine does Naguabo have in September?

The average sunshine duration in September in Naguabo, Puerto Rico, is 9.1h.

What are the months with the highest UV index in Naguabo?

The months with the highest UV index in Naguabo, Puerto Rico, are January, March through December, with an average maximum UV index of 7.

What is the UV index reading in September in Naguabo?

In Naguabo, Puerto Rico, the average daily maximum UV index in September is 7. A UV Index estimate of 6 to 7 represents a high hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Naguabo, PR

Average temperature in September - Naguabo, PR
  • Average high temperature in September: 84°F

The warmest month (with the highest average high temperature) is August (84.2°F).
The month with the lowest average high temperature is March (79°F).

  • Average low temperature in September: 80.8°F

The months with the highest average low temperature are September and October (80.8°F).
The coldest months (with the lowest average low temperature) are February and March (75.7°F).

[Resources]

Average pressure in September
Naguabo, PR

Average pressure in September - Naguabo, PR
  • Average pressure in September: 29.92"Hg

The months with the highest atmospheric pressure are January and February (30.02"Hg).
The month with the lowest atmospheric pressure is October (29.9"Hg).

[Resources]

Average wind speed in September
Naguabo, PR

Average wind speed in September - Naguabo, PR
  • Average wind speed in September: 9.3mph

The windiest month (with the highest average wind speed) is July (12mph).
The calmest month (with the lowest average wind speed) is October (8.6mph).

[Resources]

Average humidity in September
Naguabo, PR

Average humidity in September - Naguabo, PR
  • Average humidity in September: 78%

The months with the highest relative humidity are May, June, July and August (79%).
The months with the lowest relative humidity are February and March (76%).

[Resources]

Average rainfall in September
Naguabo, PR

Average rainfall in September - Naguabo, PR
  • Average rainfall in September: 1.77"

The wettest month (with the highest rainfall) is August (2.83").
The driest month (with the least rainfall) is February (1.06").

[Resources]

Average rainfall days in September
Naguabo, PR

Average rainfall days in September - Naguabo, PR
  • Average rainfall days in September: 19.6 days

The month with the highest number of rainy days is August (21.3 days).
The month with the least rainy days is February (13.8 days).

[Resources]

Average daylight in September /
Average sunshine in September
Naguabo, PR

Average daylight in September / Average sunshine in September - Naguabo, PR
  • Average daylight in September: 12h and 1min

The month with the longest days is June (Average daylight: 13h and 12min).
The month with the shortest days is December (Average daylight: 11h and 6min).

  • Average sunshine in September: 9h and 1min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 6h and 24min).

[Resources]

Average sunshine days in September
Naguabo, PR

Average sunshine days in September - Naguabo, PR
  • Average sunshine days in September: 6.7 days

The month with the most sunshine days is March (10 days).
The month with the least sunshine days is November (4.9 days).

[Resources]

Average UV index in September
Naguabo, PR

Average UV index in September - Naguabo, PR
  • Average UV index in September: 7

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

[Resources]

Average cloud cover in September
Naguabo, PR

Average cloud cover in September - Naguabo, PR
  • Average cloud cover in September: 33

The months with the most cloud cover are May and July (Cloud cover 40).
The months with the least cloud cover are February, September and October (Cloud cover 33).

[Resources]

Average visibility in September
Naguabo, PR

Average visibility in September - Naguabo, PR
  • Average visibility in September: 6mi

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

[Resources]

Naguabo, Puerto Rico, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location