September weather forecastMangaluru, India

Weather in September

September, the last month of the rainy (monsoon) season in Mangaluru, is also a moderately hot month, with an average temperature ranging between min 23.1°C (73.6°F) and max 29.5°C (85.1°F).

Temperature

Mangaluru marks the start of September with an average high-temperature of a still warm 29.5°C (85.1°F), hinting at a slight fluctuation from August's 28.4°C (83.1°F). Mangaluru encounters an average low-temperature of 23.1°C (73.6°F) during September nights.

Heat index

The average heat index in September is appraised at a torrid 37°C (98.6°F). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.
The standards for the heat index are set for locations in shade and under light breezes. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'real feel' or 'feels like', is achieved by amalgamating air temperature with the relative humidity readings. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

The average relative humidity in September is 85%.

Rainfall

In Mangaluru, during September, the rain falls for 13.7 days and regularly aggregates up to 292mm (11.5") of precipitation. In Mangaluru, during the entire year, the rain falls for 111.9 days and collects up to 3797mm (149.49") of precipitation.

Sea temperature

In Mangaluru, the average seawater temperature in September is 27.3°C (81.1°F).
Note: For swimming, diving, or other water activities, temperatures from 25°C (77°F) to 29°C (84.2°F) provide the most enjoyable experience for extended periods without discomfort.

Daylight

In Mangaluru, India, the average length of the day in September is 12h and 12min.
On the first day of the month, sunrise is at 6:19 am and sunset at 6:41 pm. On the last day of September, sunrise is at 6:19 am and sunset at 6:21 pm IST.

Sunshine

In September, the average sunshine is 5.9h.

UV index

February through September, with an average maximum UV index of 12, are months with the highest UV index. A UV Index reading of 11, and higher, represents an extreme threat to health from unsafe exposure to UV radiation for average individuals.
Note: An average maximum UV index of 12 in September leads to these recommendations:
Execute all vital precautions. Preventing sun damage is of utmost importance. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Even if the day is cloudy, sunscreen with SPF of at least 30 should be applied generously and reapplied often, particularly after swimming or outdoor exercise. Stay aware! UV radiation is magnified when reflecting off sand and water.