September weather forecast
Bitung, Indonesia

The first month of the autumn, September, is still a warm month in Bitung, Indonesia, with an average temperature fluctuating between 24.6°C (76.3°F) and 29.7°C (85.5°F).

Temperature

The onset of September manifests an average high-temperature of a still warm 29.7°C (85.5°F), demonstrating a minor variation from the preceding month. During September, Bitung's temperature falls to a steady low-temperature average of 24.6°C (76.3°F).

Heat index

The heat index value for September is evaluated at a sweltering 36°C (96.8°F). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.
Keep in mind the heat index values are meant for areas in shade and with light wind. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', marries air temperature and humidity to produce a value illustrating perceived warmth. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
One way the human body deals with excessive warmth is by perspiring and allowing sweat to evaporate. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. Rising body temperatures due to excess heat retention could signify impending heat disorders.

Humidity

The months with the lowest humidity are September and October, with an average relative humidity of 78%.

Rainfall

In Bitung, Indonesia, during September, the rain falls for 15.6 days and regularly aggregates up to 46mm (1.81") of precipitation. In Bitung, during the entire year, the rain falls for 263.2 days and collects up to 1159mm (45.63") of precipitation.

Sea temperature

The months with the coldest seawater are August and September, with an average sea temperature of 28.3°C (82.9°F).
Note: Swimming, diving, and other water activities in the temperature range of 25°C (77°F) to 29°C (84.2°F) are perceived as very enjoyable and comfortable for prolonged durations.

Daylight

In September, the average length of the day in Bitung is 12h and 7min.
On the first day of the month, sunrise is at 05:35 and sunset at 17:43. On the last day of September, sunrise is at 05:26 and sunset at 17:32 WITA.

Sunshine

The months with the most sunshine are September and October, with an average of 9.2h of sunshine.

UV index

The months with the highest UV index 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. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for average individuals.
Note: A typical high UV index of 7 in September suggests the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. 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. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Take warning! Reflective sand and water surfaces intensify the Sun's UV rays.