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 sea temperature 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, characterized by an average high temperature of 84°F (28.9°C) and a low temperature of 81.3°F (27.4°C), is generally the warmest month.Heat index
September's heat index is estimated at a hot 93.2°F (34°C). Undertake additional precautions, heat cramps and heat exhaustion could happen. Heatstroke could occur from sustained activity.In terms of the heat index, values are set with light wind and shade conditions in mind. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a numerical representation of warmth when taking temperature and moisture levels into account. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
Humidity
The average relative humidity in September is 77%.Rainfall
The month with the most rainfall is September, when the rain falls for 22.2 days and typically aggregates up to 4.45" (113mm) of precipitation.Ocean temperature
The month with the warmest seawater is September, with an average ocean temperature of 84.9°F (29.4°C).Note: For any water activity, having surface water temperatures from 77°F (25°C) to 84.2°F (29°C) is considered outstanding and highly delightful for lengthened periods.
Daylight
In Culebra, the average length of the day in September is 12h and 14min.On the first day of September, sunrise is at 6:06 am and sunset at 6:35 pm. On the last day of the month, sunrise is at 6:11 am and sunset at 6:10 pm AST.
Sunshine
In September, the average sunshine in Culebra is 8.7h.UV index
The months with the highest UV index in Culebra are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index in Culebra. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the average person.Note: The UV index of 7 during September leads to these advisories:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Stay cautious! Sand and water reflections increase UV radiation potency.
Frequently asked questions
What month is the hottest in Culebra?
How hot is September in Culebra?
What is the average humidity in September in Culebra?
What is the wettest month in Culebra?
How much does it rain in Culebra in September?
What month is the ocean warmest in Culebra?
What is the water temperature in September in Culebra?
How many hours of daylight does Culebra have in September?
What time are sunrise and sunset in September in Culebra?
How long on average sun shines in September in Culebra?
What are the months with the highest UV index in Culebra?
What are the months with the lowest UV index in Culebra?
How high is the UV index in September in Culebra?
Average temperature in September
Culebra, PR
- Average high temperature in September: 84°F
The warmest month (with the highest average high temperature) is September (84°F).
The month with the lowest average high temperature is March (78.4°F).
- Average low temperature in September: 81.3°F
The month with the highest average low temperature is October (81.5°F).
The coldest month (with the lowest average low temperature) is March (75.7°F).
Average pressure in September
Culebra, PR
- Average pressure in September: 29.93"Hg
The months with the highest atmospheric pressure are January and February (30.02"Hg).
The months with the lowest atmospheric pressure are October and November (29.91"Hg).
Average wind speed in September
Culebra, PR
- Average wind speed in September: 11.7mph
The windiest month (with the highest average wind speed) is July (15mph).
The calmest month (with the lowest average wind speed) is October (11.1mph).
Average humidity in September
Culebra, PR
- Average humidity in September: 77%
The months with the highest relative humidity are May, June, July and August (78%).
The months with the lowest relative humidity are January, February, March, October, November and December (75%).
Average rainfall in September
Culebra, PR
- Average rainfall in September: 4.45"
The wettest month (with the highest rainfall) is September (4.45").
The driest month (with the least rainfall) is February (1.22").
Average rainfall days in September
Culebra, PR
- Average rainfall days in September: 22.2 days
The month with the highest number of rainy days is November (25.5 days).
The months with the least rainy days are February, March and June (18.2 days).
Average sea temperature in September
Culebra, PR
- Average sea temperature in September: 84.9°F
The best month for swimming (with the highest average sea temperature) is September (84.9°F).
The coldest month (with the lowest average sea temperature) is February (78.7°F).
Average daylight in September /
Average sunshine in September
Culebra, 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: 8h and 4min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The months with the least sunshine are November and December (Average sunshine: 6h and 30min).
Average sunshine days in September
Culebra, PR
- Average sunshine days in September: 5.2 days
The months with the most sunshine days are March and April (7.3 days).
The month with the least sunshine days is November (2.4 days).
Average UV index in September
Culebra, PR
- Average UV index in September: 7
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
Average cloud cover in September
Culebra, PR
- Average cloud cover in September: 36
The months with the most cloud cover are May and July (Cloud cover 40).
The month with the least cloud cover is February (Cloud cover 33).
Average visibility in September
Culebra, 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).
Culebra, Puerto Rico, USA
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