Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
September notes an average high-temperature of a still warm 84°F (28.9°C), subtly differing from August's 84.2°F (29°C). The low temperature average during September reflects a slight decrease to a still warm 80.8°F (27.1°C) from the day's peak.Heat index
September's heat index is estimated at a hot 93.2°F (34°C). Extra safeguards are necessary to prevent heat exhaustion and heat cramps. Prolonged activity might cause heatstroke.Be aware that heat index ratings are designed for shaded locations and minor breezes. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', shows a temperature sensation when both heat and moisture conditions are combined. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.
Humidity
In Luquillo, the average relative humidity in September is 78%.Rainfall
In Luquillo, during September, the rain falls for 19.6 days and regularly aggregates up to 1.77" (45mm) of precipitation. In Luquillo, during the entire year, the rain falls for 216 days and collects up to 21.5" (546mm) of precipitation.Daylight
In Luquillo, the average length of the day in September is 12h and 14min.On the first day of the month, sunrise is at 6:08 am and sunset at 6:36 pm. On the last day of September, in Luquillo, sunrise is at 6:13 am and sunset at 6:11 pm AST.
Sunshine
In September, the average sunshine in Luquillo, Puerto Rico, is 9.1h.UV index
The months with the highest UV index are January, March through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for average individuals.Note: In September, the UV index of 7 transforms into the following advice:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Frequently asked questions
How hot is September in Luquillo?
What is the average humidity in September in Luquillo?
How many days does it rain in September in Luquillo?
What is the average length of the day in September in Luquillo?
When is the sunrise / sunset in September in Luquillo?
How long on average sun shines in September in Luquillo?
What are the months with the highest UV index in Luquillo?
What is the UV index reading in September in Luquillo?
Average temperature in September
Luquillo, 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).
Average pressure in September
Luquillo, 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).
Average wind speed in September
Luquillo, 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).
Average humidity in September
Luquillo, 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%).
Average rainfall in September
Luquillo, 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").
Average rainfall days in September
Luquillo, 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).
Average daylight in September /
Average sunshine in September
Luquillo, 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 0min).
- 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).
Average sunshine days in September
Luquillo, 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).
Average UV index in September
Luquillo, 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).
Average cloud cover in September
Luquillo, 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).
Average visibility in September
Luquillo, 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).
Luquillo, Puerto Rico, USA
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