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
Port Blair measures an average high-temperature of a still warm 28.4°C (83.1°F) in September, nearly consistent with the preceding month. Port Blair's nighttime temperatures in September see a subtle dip to an average of 27.5°C (81.5°F).Heat index
September's heat index is calculated to be a hot 33°C (91.4°F). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.Heat index readings emphasize conditions of light breezes and shaded spots. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'real feel' or 'apparent temperature', marries air temperature and humidity to produce a value illustrating perceived warmth. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values hold particular significance for children. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
Humidity
In September, the average relative humidity is 80%.Rainfall
The month with the most rainfall in Port Blair is September, when the rain falls for 29 days and typically aggregates up to 266mm (10.47") of precipitation.Sea temperature
In Port Blair, the average seawater temperature in September is 28.3°C (82.9°F).Note: For swimming, diving, or other water activities, the temperature range of 25°C (77°F) to 29°C (84.2°F) is perceived as exceptionally enjoyable and comfortable even for prolonged periods.
Daylight
In September, the average length of the day in Port Blair is 12h and 11min.On the first day of the month, sunrise is at 5:08 am and sunset at 5:29 pm. On the last day of September, sunrise is at 5:07 am and sunset at 5:09 pm IST.
Sunshine
The months with the least sunshine in Port Blair are June and September, with an average of 6.9h of sunshine.UV index
June through September, with an average maximum UV index of 6, are months with the lowest UV index in Port Blair. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the ordinary person.Note: A maximum high UV index of 6 in September translates into the following recommendations:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Warning! Reflective surfaces like sand and water amplify the Sun's UV radiation.
Frequently asked questions
How hot does it get in Port Blair in September?
What is the average humidity in September in Port Blair?
What is the rainiest month in Port Blair?
How much does it rain in Port Blair in September?
What is the water temperature in September in Port Blair?
What is the average length of the day in September in Port Blair?
When is the sunrise / sunset in September in Port Blair?
What are the months with the least sunshine in Port Blair?
How many hours of sunshine does Port Blair have in September?
What is the month with the lowest UV index in Port Blair?
What is the UV index reading in September in Port Blair?
Average temperature in September
Port Blair, India
- Average high temperature in September: 28.4°C
The warmest months (with the highest average high temperature) are April and May (30.1°C).
The month with the lowest average high temperature is January (27.9°C).
- Average low temperature in September: 27.5°C
The month with the highest average low temperature is May (28.8°C).
The coldest months (with the lowest average low temperature) are January and February (26.3°C).
Average pressure in September
Port Blair, India
- Average pressure in September: 1008.6mbar
The month with the highest atmospheric pressure is January (1011.8mbar).
The month with the lowest atmospheric pressure is June (1006.9mbar).
Average wind speed in September
Port Blair, India
- Average wind speed in September: 23.2km/h
The windiest month (with the highest average wind speed) is June (28.5km/h).
The calmest month (with the lowest average wind speed) is April (9.6km/h).
Average humidity in September
Port Blair, India
- Average humidity in September: 80%
The month with the highest relative humidity is July (81%).
The month with the lowest relative humidity is March (70%).
Average rainfall in September
Port Blair, India
- Average rainfall in September: 266mm
The wettest month (with the highest rainfall) is September (266mm).
The driest month (with the least rainfall) is February (15mm).
Average rainfall days in September
Port Blair, India
- Average rainfall days in September: 29 days
The month with the highest number of rainy days is July (29.6 days).
The month with the least rainy days is February (3.8 days).
Average sea temperature in September
Port Blair, India
- Average sea temperature in September: 28.3°C
The best months for swimming (with the highest average sea temperature) are April and May (30.3°C).
The coldest month (with the lowest average sea temperature) is January (27.8°C).
Average daylight in September /
Average sunshine in September
Port Blair, India
- Average daylight in September: 12h and 1min
The month with the longest days is June (Average daylight: 12h and 48min).
The month with the shortest days is December (Average daylight: 11h and 30min).
- Average sunshine in September: 6h and 5min
The month with the most sunshine is February (Average sunshine: 9h and 54min).
The months with the least sunshine are June and September (Average sunshine: 6h and 54min).
Average sunshine days in September
Port Blair, India
- Average sunshine days in September: 0.6 days
The month with the most sunshine days is February (23.2 days).
The month with the least sunshine days is September (0.6 days).
Average UV index in September
Port Blair, India
- Average UV index in September: 6
The months with the highest UV index are January, February, March, April, May, October, November and December (UV index 7).
The months with the lowest UV index are June, July, August and September (UV index 6).
Average cloud cover in September
Port Blair, India
- Average cloud cover in September: 53
The months with the most cloud cover are June and September (Cloud cover 53).
The month with the least cloud cover is February (Cloud cover 12).
Average visibility in September
Port Blair, India
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, October, November and December (10km).
The months with the lowest visibility are May, June, July, August and September (9km).
Port Blair, India
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