September weather forecastDiu, India
September
Weather in September
September, the last month of the rainy (monsoon) season in Diu, is another warm month, with an average temperature fluctuating between 29.9°C (85.8°F) and 25°C (77°F).Temperature
The transition into September shows a subtle variation to a still moderately hot 29.9°C (85.8°F) from August's 29.3°C (84.7°F) in the average high-temperature. Diu maintains a near steady average temperature of 25°C (77°F) during the nights of September, demonstrating little drop from daytime highs.Heat index
During September, the heat index is computed to be a sweltering 37°C (98.6°F). Implement more preventive measures, heat cramps and heat exhaustion are probable. Heatstroke might result from extended activity.Research indicates the heat index considers values in shaded locales and with light winds. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a numerical representation of warmth when taking temperature and moisture levels into account. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. Under conditions of increased relative humidity, the evaporation rate lessens, causing the body to retain more heat than under less humid conditions. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.
Humidity
In September, the average relative humidity in Diu is 79%.Rainfall
September is the month with the most rainfall. Rain falls for 15.2 days and accumulates 152mm (5.98") of precipitation.Sea temperature
In September, the average sea temperature is 28.1°C (82.6°F).Note: Engaging in water activities, such as swimming or diving, in temperatures from 25°C (77°F) to 29°C (84.2°F) is very pleasurable for extended periods, without any discomfort.
Daylight
In Diu, the average length of the day in September is 12h and 16min.On the first day of September in Diu, sunrise is at 6:30 am and sunset at 7:01 pm. On the last day of the month, sunrise is at 6:36 am and sunset at 6:34 pm IST.
Sunshine
The average sunshine in September is 7.9h.UV index
In Diu, the average daily maximum UV index in September is 7. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum high UV index of 7 in September translates into the following recommendations:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Caution! The reflection of sand and water significantly amplifies the Sun's UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Diu, India
- Average high temperature in September: 29.9°C
The warmest month (with the highest average high temperature) is May (36°C).
The month with the lowest average high temperature is January (28.2°C).
- Average low temperature in September: 25°C
The month with the highest average low temperature is June (28.2°C).
The coldest month (with the lowest average low temperature) is January (19.3°C).
Average pressure in September
Diu, India
- Average pressure in September: 1006.6mbar
The month with the highest atmospheric pressure is January (1014.5mbar).
The month with the lowest atmospheric pressure is July (1002mbar).
Average wind speed in September
Diu, India
- Average wind speed in September: 16.6km/h
The windiest month (with the highest average wind speed) is July (25.2km/h).
The calmest month (with the lowest average wind speed) is October (12.3km/h).
Average humidity in September
Diu, India
- Average humidity in September: 79%
The month with the highest relative humidity is August (82%).
The month with the lowest relative humidity is March (41%).
Average rainfall in September
Diu, India
- Average rainfall in September: 152mm
The wettest month (with the highest rainfall) is September (152mm).
The driest months (with the least rainfall) are January, February and May (0mm).
Average rainfall days in September
Diu, India
- Average rainfall days in September: 15.2 days
The month with the highest number of rainy days is July (24.1 days).
The month with the least rainy days is February (0.2 days).
Average sea temperature in September
Diu, India
- Average sea temperature in September: 28.1°C
The best month for swimming (with the highest average sea temperature) is June (29.4°C).
The coldest month (with the lowest average sea temperature) is February (24.1°C).
Average daylight in September /
Average sunshine in September
Diu, India
- Average daylight in September: 12h and 18min
The month with the longest days is June (Average daylight: 13h and 24min).
The month with the shortest days is December (Average daylight: 10h and 54min).
- Average sunshine in September: 7h and 54min
The months with the most sunshine are January, April and May (Average sunshine: 10h and 0min).
The month with the least sunshine is July (Average sunshine: 5h and 0min).
Average sunshine days in September
Diu, India
- Average sunshine days in September: 12.5 days
The month with the most sunshine days is January (30.5 days).
The month with the least sunshine days is July (4.5 days).
Average UV index in September
Diu, India
- Average UV index in September: 7
The months with the highest UV index are April and May (UV index 8).
The months with the lowest UV index are January, July and December (UV index 6).
Average cloud cover in September
Diu, India
- Average cloud cover in September: 38
The month with the most cloud cover is July (Cloud cover 67).
The month with the least cloud cover is January (Cloud cover 3).
Average visibility in September
Diu, India
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
